<PAGE>

                                                                     Exhibit 4.1

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.,
                                    Depositor

                             WELLS FARGO BANK, N.A.
                  Master Servicer and Securities Administrator

                                       and

                      HSBC Bank USA, National Association,
                                     Trustee

                         POOLING AND SERVICING AGREEMENT

                            Dated as of July 1, 2006

                        ---------------------------------

             Mortgage Pass-Through Certificates, MLMI Series 2006-A4

<PAGE>

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                     Page
<S>                                                                                                  <C>
ARTICLE I DEFINITIONS...............................................................................    7

         Section 1.02 Accounting....................................................................   51

ARTICLE II CONVEYANCE OF MORTGAGE LOANS; ORIGINAL ISSUANCE OF CERTIFICATES..........................   52

         Section 2.01 Conveyance of Mortgage Loans to Trustee.......................................   52
         Section 2.02 Acceptance of Mortgage Loans by Trustee.......................................   55
         Section 2.03 Assignment of Interest in the Mortgage Loan Purchase Agreement................   58
         Section 2.04 Substitution of Mortgage Loans................................................   59
         Section 2.05 Issuance of Certificates......................................................   61
         Section 2.06 Representations and Warranties Concerning the Depositor.......................   61
         Section 2.07 Representations and Warranties Concerning the Master Servicer and
                      Securities Administrator......................................................   62

ARTICLE III ADMINISTRATION AND SERVICING OF MORTGAGE LOANS..........................................   64

         Section 3.01 Master Servicer...............................................................   64
         Section 3.02 REMIC-Related Covenants.......................................................   65
         Section 3.03 Monitoring of Servicers.......................................................   65
         Section 3.04 Fidelity Bond.................................................................   66
         Section 3.05 Power to Act; Procedures......................................................   66
         Section 3.06 Due-on-Sale Clauses; Assumption Agreements....................................   67
         Section 3.07 Release of Mortgage Files.....................................................   67
         Section 3.08 Documents, Records and Funds in Possession of Master Servicer To Be Held
                      for Trustee...................................................................   68
         Section 3.09 Standard Hazard Insurance and Flood Insurance Policies........................   69
         Section 3.10 Presentment of Claims and Collection of Proceeds..............................   69
         Section 3.11 Maintenance of the Primary Mortgage Insurance Policies........................   70
         Section 3.12 Trustee to Retain Possession of Certain Insurance Policies and Documents......   70
         Section 3.13 Realization Upon Defaulted Mortgage Loans.....................................   71
         Section 3.14 Compensation for the Master Servicer..........................................   71
         Section 3.15 REO Property..................................................................   71
         Section 3.16 Annual Statement as to Compliance.............................................   72
         Section 3.17 Reports on Assessment of Compliance and Attestation...........................   73
         Section 3.18 Periodic Filings..............................................................   75
         Section 3.19 Compliance with Regulation AB.................................................   82

ARTICLE IV ACCOUNTS.................................................................................   83

         Section 4.01 Protected Accounts............................................................   83
         Section 4.02 Master Servicer Collection Account............................................   84
</TABLE>

<PAGE>

<TABLE>
<S>                                                                                                    <C>
         Section 4.03 Permitted Withdrawals and Transfers from the Master Servicer Collection
                      Account.......................................................................   85
         Section 4.04 Distribution Account..........................................................   86
         Section 4.05 Permitted Withdrawals and Transfers from the Distribution Account.............   86
         Section 4.06 Reserve Account...............................................................   88

ARTICLE V CERTIFICATES..............................................................................   90

         Section 5.01 The Certificates..............................................................   90
         Section 5.02 Certificate Register; Registration of Transfer and Exchange of
                      Certificates..................................................................   90
         Section 5.03 Mutilated, Destroyed, Lost or Stolen Certificates.............................   94
         Section 5.04 Persons Deemed Owners.........................................................   95
         Section 5.05 Access to List of Certificateholders' Names and Addresses.....................   95
         Section 5.06 Book-Entry Certificates.......................................................   95
         Section 5.07 Notices to Depository.........................................................   96
         Section 5.08 Definitive Certificates.......................................................   96
         Section 5.09 Maintenance of Office or Agency...............................................   97

ARTICLE VI PAYMENTS TO CERTIFICATEHOLDERS...........................................................   98

         Section 6.01 Distributions on the Certificates.............................................   98
         Section 6.02 Allocation of Losses..........................................................  103
         Section 6.03 Payments......................................................................  104
         Section 6.04 Statements to Certificateholders..............................................  104
         Section 6.05 Monthly Advances..............................................................  107
         Section 6.06 Compensating Interest Payments................................................  107

ARTICLE VII THE MASTER SERVICER AND THE DEPOSITOR...................................................  108

         Section 7.01 Liabilities of the Master Servicer............................................  108
         Section 7.02 Merger or Consolidation of the Master Servicer................................  108
         Section 7.03 Indemnification from the Master Servicer and the Depositor....................  108
         Section 7.04 Limitations on Liability of the Master Servicer and Others....................  109
         Section 7.05 Master Servicer Not to Resign.................................................  110
         Section 7.06 Successor Master Servicer.....................................................  110
         Section 7.07 Sale and Assignment of Master Servicing.......................................  110

ARTICLE VIII DEFAULT................................................................................  112

         Section 8.01 Events of Default.............................................................  112
         Section 8.02 Trustee to Act; Appointment of Successor......................................  113
         Section 8.03 Notification to Certificateholders............................................  114
         Section 8.04 Waiver of Defaults............................................................  114
         Section 8.05 List of Certificateholders....................................................  115

ARTICLE IX  CONCERNING THE TRUSTEE AND THE SECURITIES ADMINISTRATOR.................................  116
</TABLE>

                                       iii
<PAGE>

<TABLE>
<S>                                                                                                   <C>
         Section 9.01  Duties of Trustee............................................................  116
         Section 9.02  Certain Matters Affecting the Trustee and the Securities Administrator.......  118
         Section 9.03  Trustee and Securities Administrator Not Liable for Certificates or
                       Mortgage Loans...............................................................  120
         Section 9.04  Trustee and Securities Administrator May Own Certificates....................  120
         Section 9.05  Trustee's and Securities Administrator's Fees and Expenses...................  120
         Section 9.06  Eligibility Requirements for Trustee and Securities Administrator............  121
         Section 9.07  Insurance....................................................................  122
         Section 9.08  Resignation and Removal of the Trustee and Securities Administrator..........  122
         Section 9.09  Successor Trustee and Successor Securities Administrator.....................  123
         Section 9.10  Merger or Consolidation of Trustee or Securities Administrator...............  123
         Section 9.11  Appointment of Co-Trustee or Separate Trustee................................  124
         Section 9.12  Federal Information Returns and Reports to Certificateholders; REMIC
                       Administration...............................................................  125

ARTICLE X  TERMINATION..............................................................................  130

         Section 10.01 Termination upon Liquidation or Repurchase of all Mortgage Loans.............  130
         Section 10.02 Final Distribution on the Certificates.......................................  131
         Section 10.03 Additional Termination Requirements..........................................  132

ARTICLE XI MISCELLANEOUS PROVISIONS.................................................................  134

         Section 11.01 Intent of Parties............................................................  134
         Section 11.02 Amendment....................................................................  134
         Section 11.03 Recordation of Agreement.....................................................  136
         Section 11.04 Limitation on Rights of Certificateholders...................................  136
         Section 11.05 Acts of Certificateholders...................................................  136
         Section 11.06 Governing Law................................................................  138
         Section 11.07 Notices......................................................................  138
         Section 11.08 Severability of Provisions...................................................  139
         Section 11.09 Successors and Assigns.......................................................  139
         Section 11.10 Article and Section Headings.................................................  139
         Section 11.11 Counterparts.................................................................  139
         Section 11.12 Notice to Rating Agencies....................................................  139

ARTICLE XII REMIC ADMINISTRATION....................................................................  140

         Section 12.01 REMIC Administration.........................................................  140
         Section 12.02 Prohibited Transactions and Activities.......................................  140
         Section 12.03 Indemnification with Respect to Prohibited Transactions or Loss of REMIC
                       Status.......................................................................  140
         Section 12.04 REO Property.................................................................  141
</TABLE>

                                       iv
<PAGE>

EXHIBITS
Exhibit A-1         -  Form of Class A and Class M Certificates
Exhibit A-2         -  Form of Class B Certificates
Exhibit A-3         -  Form of Class A-R Certificate
Exhibit A-4            Form of Class P Certificate
Exhibit B           -  Mortgage Loan Schedule
Exhibit C           -  [Reserved]
Exhibit D           -  Request for Release of Documents
Exhibit E-1         -  Form of Transferee's Letter and Affidavit
Exhibit E-2         -  Form of Transferor Certificate
Exhibit F-1         -  Form of Transferor Representation Letter
Exhibit F-2         -  Form of Investor Representation Letter
Exhibit F-3         -  Form of Rule 144A Letter
Exhibit G           -  Form of Custodial Agreement
Exhibit H           -  [Reserved]
Exhibit I-1 to I-6  -  Assignment Agreements
Exhibit J           -  Mortgage Loan Purchase Agreement
Exhibit K           -  Servicing Criteria To Be Addressed in Assessment of
                       Compliance
Exhibit L           -  Form of Sarbanes-Oxley Certification
Exhibit M           -  Form of Back-up Sarbanes-Oxley Certification
Exhibit N           -  [Reserved]
Exhibit O           -  Additional Disclosure Notification
Exhibit P           -  Form of Item 1123 Certification of Servicer
Exhibit Q-1         -  Additional Form 10-D Disclosure
Exhibit Q-2         -  Additional Form 10-K Disclosure
Exhibit Q-3         -  Form 8-K Disclosure Information

                                        v

<PAGE>

                         POOLING AND SERVICING AGREEMENT

      This Pooling and Servicing Agreement is dated as of July 1, 2006 (the
"Agreement"), among MERRILL LYNCH MORTGAGE INVESTORS, INC., as depositor (the
"Depositor"), WELLS FARGO BANK, N.A., as master servicer (in such capacity, the
"Master Servicer") and as securities administrator (in such capacity, the
"Securities Administrator") and HSBC BANK USA, NATIONAL ASSOCIATION, as trustee
(the "Trustee").

                              PRELIMINARY STATEMENT

      The Depositor has acquired the Mortgage Loans from the Seller and at the
Closing Date is the owner of the Mortgage Loans and the other property being
conveyed by the Depositor to the Trustee hereunder on behalf of the Issuing
Entity for inclusion in the Trust Fund. On the Closing Date, the Depositor will
acquire the Certificates from the Securities Administrator as consideration for
the Depositor's transfer to the Issuing Entity of the Mortgage Loans and the
other property constituting the Trust Fund. The Depositor has duly authorized
the execution and delivery of this Agreement to provide for the conveyance to
the Issuing Entity of the Mortgage Loans and the other property constituting the
Trust Fund. All covenants and agreements made by the Seller in the Mortgage Loan
Purchase Agreement and in this Agreement and all covenants and agreements made
by the Depositor, the Trustee, the Securities Administrator and the Master
Servicer herein with respect to the Mortgage Loans and the other property
constituting the Trust Fund are for the benefit of the Holders from time to time
of the Certificates. The Depositor, the Trustee, the Securities Administrator
and the Master Servicer are entering into this Agreement, and the Trustee on
behalf of the Issuing Entity is accepting the Trust Fund created hereby, for
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged.

      As provided herein, the Securities Administrator shall elect that the
Trust Fund be treated for federal income tax purposes as comprising three real
estate mortgage investment conduits (each a "REMIC" or, in the alternative,
"REMIC 1," "REMIC 2" and the "Upper Tier REMIC," respectively) in a tiered
structure. The Certificates, other than the Class A-R Certificate and the Class
P Certificate, shall represent ownership of regular interests in the Upper Tier
REMIC. For federal income tax purposes, in addition to representing ownership of
a REMIC regular interest, each of the Class I-A Certificates represents the
right to receive payments in respect of Basis Risk Shortfall Amounts. For
federal income tax purposes, in addition to representing ownership of a REMIC
regular interest, each of the Class X-A Certificates will represent the
obligation to make certain non-REMIC payments to the holders of the Class I-A
Certificates in respect of Basis Risk Shortfall Amounts. The Class A-R
Certificate represents the sole class of residual interest in each of REMIC 1,
REMIC 2 and the Upper Tier REMIC.

      The Upper Tier REMIC shall hold as its assets the several classes of
uncertificated REMIC 2 Regular Interests. REMIC 2 shall hold as its assets the
several classes of uncertificated REMIC 1 Regular Interests. REMIC 1 shall hold
as its assets the property of the Trust Fund other than (i) the REMIC 1
Interests, (ii) the REMIC 2 Interests and (iii) the amounts payable to the Class
P Certificates.

      Each Upper Tier REMIC Regular Interest is hereby designated as a regular
interest in the Upper Tier REMIC for purposes of the REMIC Provisions. Each
REMIC 2 Regular Interest is hereby designated as a regular interest in REMIC 2
for purposes of the REMIC Provisions. Each REMIC 1 Regular Interest is

                                       -1-
<PAGE>

hereby designated as a regular interest in REMIC 1 for purposes of the REMIC
Provisions.

      The Class LT1-R Interest is hereby designated as the sole class of
residual interest in REMIC 1 for purposes of the REMIC Provisions. The Class
LT2-R Interest is hereby designated as the sole class of residual interest in
REMIC 2 for purposes of the REMIC Provisions. The Class A-R Certificate, other
than the portion thereof representing the right to receive payments in respect
of the Class LT1-R Interest or the Class LT2-R Interest, is hereby designated as
the sole class of residual interest in the Upper Tier REMIC for purposes of the
REMIC provisions. The Class A-R Certificate will also represent the Class LT1-R
Interest and the Class LT2-R Interest.

THE REMIC 1 INTERESTS

      The following table sets forth (or describes) the class designation,
interest rate, initial principal balance, and related group of Mortgage Loans
for each class of REMIC 1 Interests:

<TABLE>
<CAPTION>
                      Principal       Interest      Related Loan Groups
Class Designation     Balance           Rate           or Loan Group
-----------------  -----------------  --------  ---------------------------------
<S>                <C>                <C>       <C>
LT11A              $     17,224.9679     (2)    Loan Group I
LT11B              $    229,544.9679     (3)    Loan Group I
LT12A              $     82,964.1700     (2)    Loan Group II
LT12B              $  1,106,074.1700     (4)    Loan Group II
                                         (2)

LT13A              $    117,885.6856            Loan Group III
LT13B              $  1,571,735.6856     (5)    Loan Group III
LT14A              $     63,971.5792     (2)    Loan Group IV
LT14B              $    852,901.5792     (6)    Loan Group IV
LT15A              $      8,826.5963     (2)    Loan Group V
LT15B              $    117,646.5963     (7)    Loan Group V
LT1Z                                     (2)    Loan Group I, Loan Group II, Loan
                                                Group III, Loan Group IV and Loan
                   $383,621,523.9020            Group V
LT1-R                             (1)    (1)    N/A
</TABLE>

-------

(1)   The Class LT1-R Interest represents the sole class of residual interest in
      REMIC 1 and has neither a principal amount nor an interest rate. The Class
      LT1-R Interest shall be represented by the Class A-R Certificate.

(2)   The Class LT11A Interest, the Class LT12A Interest, the Class LT13A
      Interest, the Class LT14A Interest, the Class LT15A Interest and the Class
      LT1Z Interest shall have an interest rate for each Distribution Date (and
      the related Interest Accrual Period) equal to the Net WAC.

(3)   The Class LT11B Interest shall have an interest rate for any Distribution
      Date (and the related Interest Accrual Period) equal to the Loan Group I
      Net WAC.

(4)   The Class LT12B Interest shall have an interest rate for any Distribution
      Date (and the related Interest Accrual Period) equal to the Loan Group II
      Net WAC.

(5)   The Class LT13B Interest shall have an interest rate for any Distribution
      Date (and the related Interest Accrual Period) equal to the Loan Group III
      Net WAC.

(6)   The Class LT14B Interest shall have an interest rate for any Distribution
      Date (and the related Interest Accrual Period) equal to the Loan Group IV
      Net WAC.

                                       -2-
<PAGE>

(7)   The Class LT15B Interest shall have an interest rate for any Distribution
      Date (and the related Interest Accrual Period) equal to the Loan Group V
      Net WAC.

      On each Distribution Date, the Securities Administrator shall first pay or
charge as an expense of REMIC 1 all expenses of the Issuing Entity for such
Distribution Date.

      Principal distributions shall be deemed to be made on the REMIC 1
Interests first, so as to keep the uncertificated principal balance of each
REMIC 1 Interest ending with the designation "A" equal to 1% of the excess of
(x) the aggregate Stated Principal Balance of the Mortgage Loans in the related
Loan Group over (y) the aggregate class principal amounts of the Certificates in
the Certificate Group related to such Loan Group (except that if 1% of any such
excess is greater than the principal amount of the corresponding REMIC 1
Interest ending with the designation "A", the least amount of principal shall be
distributed to such REMIC 1 Interests such that the REMIC 1 Subordinate Balance
Ratio is maintained); second, to each REMIC 1 Interest ending with the
designation "B" so as to keep the uncertificated principal balance of each such
REMIC 1 Interest equal to 1% of the aggregate Stated Principal Balance of the
Mortgage Loans in the related Loan Group and finally, all remaining principal
amounts shall be distributed in respect of the Class LT1Z Interest. Realized
Losses with respect to principal shall be allocated among the REMIC 1 Interests
first, so as to keep the uncertificated principal balance of each REMIC 1
Interest ending with the designation "A" equal to 1% of the excess of (x) the
aggregate Stated Principal Balance of the Mortgage Loans in the related Loan
Group over (y) the aggregate class principal amounts of the Certificates in the
Certificate Group related to such Loan Group (except that if 1% of any such
excess is greater than the principal amount of the corresponding REMIC 1
Interest ending with the designation "A", the least amount of losses shall be
allocated to such REMIC 1 Interests such that the REMIC 1 Subordinate Balance
Ratio is maintained); second, to each REMIC 1 Interest ending with the
designation "B" so as to keep the uncertificated principal balance of each such
REMIC 1 Interest equal to 1% of the aggregate Principal Balance of the Mortgage
Loans in the related Loan Group and finally, all remaining Realized Losses with
respect to principal shall be distributed in respect of the Class LT1Z Interest.

      If on any Distribution Date the Class Certificate Balance of any Class of
Certificates is increased due to Subsequent Recoveries pursuant to the
definition of "Class Certificate Balance", then there shall be an equivalent
aggregate increase in the principal amounts of the REMIC 1 Regular Interests,
with such increase allocated (before the making of distributions and the
allocation of losses on the REMIC 1 Regular Interests on such Distribution Date)
among the REMIC 1 Regular Interests as follows: (i) first, to each REMIC 1
Interest ending with the designation "B" so as to keep the uncertificated
principal balance of each such REMIC 1 Interest equal to 1% of the aggregate
Stated Principal Balance of the Mortgage Loans in the related Loan Group, (ii)
second, to each REMIC 1 Regular Interest ending with the designation "A", so
that the uncertificated principal balance of each REMIC 1 Regular Interest
ending with the designation "A" is as close as possible to (but does not exceed)
1% of the excess of (x) the aggregate Stated Principal Balance of the Mortgage
Loans in the related Loan Group over (y) the

                                       -3-
<PAGE>

aggregate class principal balance of the Certificates in the Certificate Group
related to such Loan Group; provided, however, that (a) the REMIC 1 Subordinate
Balance Ratio is maintained and (b) amounts allocated to any REMIC 1 Regular
Interest pursuant to this clause (ii) shall not exceed the amount of any
previous realized losses allocated to such REMIC 1 Regular Interest not
previously offset by distributions or increases in the principal amount of such
REMIC 1 Regular Interest and (iii) finally, all remaining amounts to the Class
LT1Z Interest.

      All computations with respect to the REMIC 1 Interests shall be computed
to eight decimal places.

THE REMIC 2 INTERESTS

      The following table sets forth (or describes) the class designation,
interest rate, initial principal amount, and corresponding class of certificates
or components for each class of REMIC 2 Interests:

<TABLE>
<CAPTION>
                                     Interest  Corresponding Class of
Class Designation  Principal Amount    Rate    Certificates or Components
-----------------  ----------------    ----    --------------------------
<S>                <C>               <C>       <C>
LT2IA              $  21,231,900.00     (2)    Class I-A, Class X-A
LT2IIA             $ 102,311,000.00     (3)    Class II-A
LT2IIIA1           $ 130,847,000.00     (4)    Class III-A-1
LT2IIIA2           $  14,538,000.00     (4)    Class III-A-2
LT2IVA1            $  71,004,000.00     (5)    Class IV-A-1
LT2IVA2            $   7,889,000.00     (5)    Class IV-A-2
LT2VA              $  10,882,000.00     (6)    Class V-A
LT2M1              $  10,470,000.00     (7)    Class M-1
LT2M2              $   6,010,000.00     (7)    Class M-2
LT2M3              $   3,684,000.00     (7)    Class M-3
LT2B1              $   3,684,000.00     (7)    Class B-1
LT2B2              $   2,908,000.00     (7)    Class B-2
LT2B3              $   2,331,299.90     (7)    Class B-3
LT2AR              $         100.00     (2)    Class A-R
LT2-R                            (1)    (1)    N/A
</TABLE>

------
(1)   The Class LT2-R Interest represents the sole class of residual interest in
      REMIC 2 and has neither a principal amount nor an interest rate. The Class
      LT2-R Interest shall be represented by the Class A-R Certificate.

(2)   The Class LT2IA and Class LT2AR Interests shall have an interest rate for
      each Distribution Date (and the related Interest Accrual Period) equal to
      the Loan Group I Net WAC.

(3)   The Class LT2IIA Interest shall have an interest rate for each
      Distribution Date (and the related Interest Accrual Period) equal to the
      Loan Group II Net WAC.

(4)   The Class LT2IIIA1 Interest and Class LT2IIIA2 Interest shall have an
      interest rate for each Distribution Date (and the related Interest Accrual
      Period) equal to the Loan Group III Net WAC.

(5)   The Class LT2IVA1 Interest and Class LT2IVA2 Interest shall have an
      interest rate for each Distribution Date (and the related Interest Accrual
      Period) equal to the Loan Group IV Net WAC.

(6)   The Class LT2VA Interest shall have an interest rate for each Distribution
      Date (and the related Interest Accrual Period) equal to the Loan Group V
      Net WAC.

(7)   Each of the Class LT2M1 Interest, the Class LT2M2 Interest, the Class
      LT2M3 Interest, the Class LT2B1 Interest, the Class LT2B2 Interest and the
      Class LT2B3 Interest shall have an interest rate for each Distribution
      Date (and the related Interest Accrual Period) equal to the Subordinate
      Net WAC which is the numerical equivalent of the weighted average of the
      interest rates on the Class LT11A Interest, Class LT12A Interest, Class
      LT13A Interest, Class LT14A Interest and the

                                       -4-

<PAGE>

      Class LT15A Interest (treating, for purposes of computing this weighted
      average, the Class LT11A Interest as subject to a cap and a floor equal to
      the interest rate on the Class LT11B Interest, the Class LT12A Interest as
      subject to a cap and a floor equal to the interest rate on the Class LT12B
      Interest, the Class LT13A Interest as subject to a cap and a floor equal
      to the interest rate on the Class LT13B Interest, the Class LT14A Interest
      as subject to a cap and a floor equal to the interest rate on the Class
      LT14B Interest and the Class LT15A Interest as subject to a cap and a
      floor equal to the interest rate on the Class LT15B Interest).

      Principal payments shall be deemed made and Realized Losses with respect
to principal shall be allocated among the REMIC 2 Interests in the same manner
as such payments are made or such Realized Losses are allocated among the
Corresponding Classes of Certificates (treating the initial Class Principal
Amount of the Class B-3 Certificates, for purposes of this sentence, as being
$2,331,299.90, treating the first $0.90 of residual distributions (i.e.,
distributions not in respect of principal amount or accrued interest) to the
Class A-R Certificate under Section 6.01 from principal payments on the Mortgage
Loans as distributed to the Class B-3 Certificates and disregarding Section
6.02(c)).

      The principal amount of each REMIC 2 Regular Interest shall be increased
on any Distribution Date on which, and in the amount by which, the Class
Certificate Balance of any Corresponding Class of Certificates is increased due
to Subsequent Recoveries pursuant to the definition of "Class Certificate
Balance."

THE CERTIFICATES

      The following table sets forth (or describes) the Class designation,
Pass-Through Rate, initial Class Certificate Balance or initial notional amount,
and minimum denomination for each Class of Certificates comprising interests in
the Trust Fund created hereunder.

<TABLE>
<CAPTION>
                                Initial Class
                             Certificate Balance         Minimum
     Class     Pass-Through  or Initial Notional     Denominations
  Designation      Rate            Amount         or Percentage Interest
-------------  ------------  -------------------  ----------------------
<S>            <C>           <C>                  <C>
Class I-A          (1)       $        21,231,900  $            25,000.00
Class II-A         (2)       $       102,311,000  $            25,000.00
Class III-A-1      (3)       $       130,847,000  $            25,000.00
Class III-A-2      (3)       $        14,538,000  $            25,000.00
Class IV-A-1       (4)       $        71,004,000  $            25,000.00
Class IV-A-2       (4)       $         7,889,000  $            25,000.00
Class V-A          (5)       $        10,882,000  $            25,000.00
Class X-A          (6)       $        21,231,900  $            25,000.00
Class A-R          (7)       $               100                     100%
Class M-1          (8)       $        10,470,000  $            25,000.00
Class M-2          (8)       $         6,010,000  $            25,000.00
Class M-3          (8)       $         3,684,000  $            25,000.00
Class B-1          (8)       $         3,684,000  $            25,000.00
Class B-2          (8)       $         2,908,000  $            25,000.00
Class B-3          (8)       $         2,331,299  $            25,000.00
Class P            N/A                    N/A (9)                    100%
</TABLE>

                                       -5-
<PAGE>

----
(1)   Subject to the Group I Net WAC Cap and the Group I Maximum Rate Cap, the
      Pass-Through Rate with respect to any Distribution Date (and the related
      Interest Accrual Period) for the Class I-A Certificates is One-Month LIBOR
      plus 0.20%. If the Optional Termination of the Issuing Entity does not
      occur on the first Distribution Date on which it may occur, the
      Pass-Through Rate on the Class I-A Certificates will increase, subject to
      the Group I Net WAC Cap and the Group I Maximum Rate Cap, on the following
      Distribution Date to One-Month LIBOR plus 0.40%.

(2)   The Pass-Through Rate with respect to any Distribution Date (and the
      related Interest Accrual Period) for the Class II-A Certificates will be
      the Loan Group II Net WAC.

(3)   The Pass-Through Rate with respect to any Distribution Date (and the
      related Interest Accrual Period) for the Class III-A-1 and Class III-A-2
      Certificates will be the Loan Group III Net WAC.

(4)   The Pass-Through Rate with respect to any Distribution Date (and the
      related Interest Accrual Period) for the Class IV-A-1 and Class IV-A-2
      Certificates will be the Loan Group IV Net WAC.

(5)   The Pass-Through Rate with respect to any Distribution Date (and the
      related Interest Accrual Period) for the Class V-A Certificates will be
      the Loan Group V Net WAC.

(6)   The Pass-Through Rate with respect to any Distribution Date (and the
      related Interest Accrual Period) for the Class X-A Certificates will be
      the product of (i) the Group I Net WAC Cap minus the Pass-Through Rate on
      the Class I-A Certificates and (ii) a fraction, the numerator of which is
      the actual number of days in the Interest Accrual Period for the Class I-A
      Certificates and the denominator of which is 30.

(7)   The Pass-Through Rate with respect to any Distribution Date (and the
      related Interest Accrual Period) for the Class A-R Certificates will be
      the Loan Group I Net WAC.

(8)   The Pass-Through Rates with respect to any Distribution Date (and the
      related Interest Accrual Period) for the Class M-1, Class M-2, Class M-3,
      Class B-1, Class B-2 and Class B-3 Certificates will be equal to the
      Subordinate Net WAC.

(9)   The Class P Certificates will be entitled to receive Prepayment Penalties
      on the Prepayment Penalty Mortgage Loans.

      As of the Cut-off Date, the Mortgage Loans had an aggregate Stated
Principal Balance of $387,790,299.90.

      In consideration of the mutual agreements herein contained, the Depositor,
the Trustee, Securities Administrator and the Master Servicer hereby agree as
follows:

                                       -6-
<PAGE>

                                   ARTICLE I
                                   DEFINITIONS

      Whenever used in this Agreement, the following words and phrases, unless
otherwise expressly provided or unless the context otherwise requires, shall
have the meanings specified in this Article.

      Accepted Master Servicing Practices: With respect to any Mortgage Loan, as
applicable, either (x) those customary mortgage master servicing practices of
prudent mortgage servicing institutions that master service mortgage loans of
the same type and quality as such Mortgage Loan in the jurisdiction where the
related Mortgaged Property is located, to the extent applicable to the Trustee
or the Master Servicer (except in its capacity as successor to a Servicer), or
(y) as provided in the applicable Servicing Agreement, to the extent applicable
to any Servicer, but in no event below the standard set forth in clause (x).

      Account: The Master Servicer Collection Account, Distribution Account and
any Protected Account as the context may require.

      Accountant's Attestation: As defined in Section 3.17.

      Accrued Certificate Interest: With respect to each Class of Certificates,
an amount equal to the interest accrued during the related Interest Accrual
Period on the Class Certificate Balance thereof at the then-applicable
Pass-Through Rate. Accrued Certificate Interest on any Class of Certificates
will be reduced by the amount of (i) Prepayment Interest Shortfalls (to the
extent not offset by the related Servicer or Master Servicer with a payment of
Compensating Interest as provided in Section 6.06), (ii) the interest portion of
Realized Losses allocated to such Class of Certificates pursuant to Section 6.02
and (iii) any other interest shortfalls not covered by the subordination
provided by the Class M Certificates and Class B Certificates, including
shortfalls as a result of the Relief Act or similar legislation or regulations,
with all such reductions allocated among all of the Certificates in proportion
to their respective amounts of Accrued Certificate Interest payable on such
Distribution Date which would have resulted absent such reductions.

      Additional Disclosure Notification: As defined in Section 3.18(b).

      Additional Form 10-D Disclosure: As defined in Section 3.18(e).

      Additional Form 10-K Disclosure: As defined in Section 3.18(h).

      Adverse REMIC Event: As defined in Section 9.12(g).

      Affiliate: As to any Person, any other Person controlling, controlled by
or under common control with such Person. "Control" means the power to direct
the management and policies of a Person, directly or indirectly, whether through
ownership of voting securities, by contract or otherwise. "Controlled" and
"Controlling" have meanings correlative to the foregoing. The Master Servicer
may conclusively presume that a Person is not an Affiliate of another Person
unless a Responsible Officer of the Master Servicer has actual knowledge to the
contrary.

                                       -7-
<PAGE>

      Agreement: This Pooling and Servicing Agreement, including the exhibits
hereto, and all amendments hereof and supplements hereto.

      Applicable Credit Rating: For any long-term deposit or security, a credit
rating of AAA in the case of S&P or Aaa in the case of Moody's. For any
short-term deposit or security, a rating of A-l+ in the case of S&P or P-1 in
the case of Moody's.

      Applicable Credit Support Percentage: With respect to any Class of
Subordinate Certificates, the sum of the related Class Subordination Percentages
of such Class and all Classes of Subordinate Certificates which have a lower
relative priority of payment than such Class.

      Appraised Value: For any Mortgaged Property related to a Mortgage Loan,
the amount set forth as the appraised value of such Mortgaged Property in an
appraisal made for the mortgage originator in connection with its origination of
the related Mortgage Loan.

      Assessment of Compliance: As defined in Section 3.17.

      Assignment: An assignment of the Mortgage, notice of transfer or
equivalent instrument, in recordable form, sufficient under the laws of the
jurisdiction wherein the related Mortgaged Property is located to reflect of
record the sale of the Mortgage Loan to the Trustee for the benefit of
Certificateholders, which assignment, notice of transfer or equivalent
instrument may be in the form of one or more blanket assignments covering
Mortgages secured by Mortgaged Properties located in the same county, if
permitted by law and accompanied by an Opinion of Counsel to that effect.

      Assignment Agreements: The National City Assignment Agreement, the
Countrywide Assignment Agreement, the Wells Fargo Assignment Agreement, the
CitiMortgage Assignment Agreement, the Greenpoint Assignment Agreement and the
PHH Assignment Agreement, which are attached hereto as Exhibits I-1, I-2, I-3,
I-4, I-5 and I-6, respectively.

      Assumed Final Distribution Date: For all Classes of Certificates, July 25,
2036, or if such day is not a Business Day, the next succeeding Business Day.

      Auction: The one-time auction conducted by the Securities Administrator,
as described in Section 10.01(b) hereof.

      Auction Date: The date on which the Auction occurs.

      Available Funds: For any Distribution Date, the sum of the Group I
Available Funds, the Group II Available Funds, the Group III Available Funds,
the Group IV Available Funds and the Group V Available Funds.

      Average Loss Severity: With respect to any period and each Loan Group, the
fraction obtained by dividing (x) the aggregate amount of Realized Losses for
the related Mortgage Loans for such period by (y) the number of related Mortgage
Loans which had Realized Losses for such period.

      Back-Up Certification: As defined in Section 3.18(k).

                                       -8-
<PAGE>

      Bankruptcy Code: The United States Bankruptcy Code, as amended as codified
in 11 U.S.C. Sections 101-1330.

      Basis Risk Shortfall Amount: With respect to any Distribution Date and the
Class I-A Certificates, in the event that the Pass-Through Rate for such class
is based upon the Group I Net WAC Cap, the excess of (1) the amount of interest
that such class would have been entitled to receive on such Distribution Date
had the Pass-Through Rate for such class not been calculated based on the Group
I Net WAC Cap, up to but not exceeding the amount of interest that such class
would have been entitled to receive on such Distribution Date at an interest
rate equal to the Group I Maximum Rate Cap over (2) the amount of interest such
class was entitled to receive on such Distribution Date based on the Group I Net
WAC Cap together with (A) the unpaid portion of any such excess from prior
Distribution Dates (and interest accrued thereon at the Pass-Through Rate for
such class, without giving effect to the Group I Net WAC Cap) and (B) any amount
previously distributed with respect to Basis Risk Shortfall Amounts for such
class that is recovered as a voidable preference by a trustee in bankruptcy.

      Book-Entry Certificates: Any of the Certificates that shall be registered
in the name of the Depository or its nominee, the ownership of which is
reflected on the books of the Depository or on the books of a Person maintaining
an account with the Depository (directly, as a "Depository Participant", or
indirectly, as an indirect participant in accordance with the rules of the
Depository and as described in Section 5.02 hereof). On the Closing Date, the
Certificates (other than the Class A-R Certificate and the Private Certificates)
shall be Book-Entry Certificates.

      Business Day: Any day other than (i) a Saturday or a Sunday, or (ii) a day
on which the New York Stock Exchange or Federal Reserve is closed or on which
banking institutions in the jurisdiction in which the Trustee, the Master
Servicer, any Servicer or the Securities Administrator are authorized or
obligated by law or executive order to be closed.

      Certificate: Any mortgage pass-through certificate evidencing a beneficial
ownership interest in the Trust Fund signed and countersigned by the Securities
Administrator.

      Certificate Group: Each of the Group I Certificates, the Group II
Certificates, the Group III Certificates, the Group IV Certificates and the
Group V Certificates.

      Certificateholder or Holder: The Person in whose name a Regular
Certificate is registered in the Certificate Register, except that a
Disqualified Organization or non-U.S. Person shall not be a Holder of the Class
A-R Certificate for any purpose hereof.

      Certificate Owner: With respect to each Book-Entry Certificate, any
beneficial owner thereof.

      Certificate Register: The register maintained pursuant to Section 5.02
hereof.

      Certification Parties: As defined in Section 3.18(k).

      Certifying Person: As defined in Section 3.18(k).

                                      -9-
<PAGE>

      CitiMortage: CitiMortgage, Inc., or any successor thereto.

      CitiMortgage Assignment Agreement: The Assignment, Assumption and
Recognition Agreement, dated as of July 1, 2006, among CitiMortgage, the
Depositor and the Seller pursuant to which the CitiMortgage Servicing Agreement
and the rights of the Seller thereunder (other than the rights to enforce the
representations and warranties with respect to the CitiMortgage Loans) were
assigned to the Depositor for the benefit of the Certificateholders.

      CitiMortgage Loans: The Mortgage Loans serviced by CitiMortgage pursuant
to the CitiMortgage Servicing Agreement.

      CitiMortgage Servicing Agreement: The Mortgage Servicing Purchase and Sale
Agreement dated as of May 31, 2006, among between Merrill Lynch Mortgage
Lending, Inc. and CitiMortgage (as amended and in effect at any time).

      Class: Collectively, Certificates which have the same priority of payment
and bear the same class designation and the form of which is identical except
for variation in the Percentage Interest evidenced thereby.

      Class A Certificate: Any of the Class I-A, Class II-A, Class III-A-1,
Class III-A-2, Class IV-A-1, Class IV-A-2, Class V-A, Class X-A or Class A-R
Certificates as designated on the face thereof substantially in the form annexed
(other than the Class A-R Certificate) hereto as Exhibit A-1, executed by the
Securities Administrator and authenticated and delivered by the Securities
Administrator, representing the right to distributions as set forth herein and
therein.

      Class A-R Certificate: The Class A-R Certificate executed, authenticated
and delivered by the Securities Administrator substantially in the form annexed
hereto as Exhibit A-3 and evidencing the ownership of the Class LT1-R Interest,
the Class LT2-R Interest and the residual interest in the Upper Tier REMIC.

      Class A Certificateholder: Any Holder of a Class A Certificate.

      Class B Certificate: Any one of the Class B-1, Class B-2 or Class B-3
Certificates as designated on the face thereof substantially in the form annexed
hereto as Exhibit A-2, executed by the Securities Administrator and
authenticated and delivered by the Securities Administrator, representing the
right to distributions as set forth herein and therein.

      Class B Certificateholder: Any Holder of a Class B Certificate.

      Class B Percentage: The Class B-1 Percentage, Class B-2 Percentage or
Class B-3 Percentage.

      Class B-1 Percentage: With respect to any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Class B-1 Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties) immediately prior to such Distribution Date.

                                      -10-
<PAGE>

      Class B-2 Percentage: With respect to any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Class B-2 Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties) immediately prior to such Distribution Date.

      Class B-3 Percentage: With respect to any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Class B-3 Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Mortgage Loans (or related REO
Properties) immediately prior to such Distribution Date.

      Class Certificate Balance: With respect to any Certificate (other than the
Class X-A Certificates) as of any date of determination, the Class Certificate
Balance of such Certificate on the Distribution Date immediately prior to such
date of determination, plus any Subsequent Recoveries added to the Class
Certificate Balance of such Certificate pursuant to Section 6.01, and reduced by
the aggregate of (a) all distributions of principal made thereon on such
immediately prior Distribution Date and (b) without duplication of amounts
described in clause (a) above, reductions in the Class Certificate Balance
thereof in connection with allocations thereto of Realized Losses on the
Mortgage Loans and Extraordinary Trust Fund Expenses on such immediately prior
Distribution Date (or, in the case of any date of determination up to and
including the initial Distribution Date, the initial Class Certificate Balance
of such Certificate, as stated on the face thereof); provided, however, that the
Class Certificate Balance of each Subordinate Certificate of the Class of
Subordinate Certificates outstanding with the highest numerical designation at
any given time shall be calculated to equal the Percentage Interest evidenced by
such Certificate multiplied by the excess, if any, of (A) the then aggregate
Stated Principal Balance of the Mortgage Loans over (B) the then aggregate Class
Certificate Balance of all other Classes of Certificates then outstanding.

      Class I-A Pass-Through Margin: For each Distribution Date (i) on or prior
to the Optional Termination Date, 0.20% per annum, and (ii) following the
Optional Termination Date, 0.40% per annum.

      Class M Certificate: Any one of the Class M-1, Class M-2 or Class M-3
Certificates as designated on the face thereof substantially in the form annexed
hereto as Exhibit A-1, executed by the Securities Administrator and
authenticated and delivered by the Securities Administrator, representing the
right to distributions as set forth herein and therein.

      Class M Certificateholder: Any Holder of a Class M Certificate.

      Class M Percentage: The Class M-1 Percentage, Class M-2 Percentage or
Class M-3 Percentage.

      Class M-1 Percentage: With respect to any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Class M-1 Certificates immediately
prior to such date and the denominator of

                                      -11-
<PAGE>

which is the aggregate Stated Principal Balance of all of the Mortgage Loans (or
related REO Properties) immediately prior to such Distribution Date.

      Class M-2 Percentage: With respect to any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Class M-2 Certificates immediately
prior to such date and the denominator of which is the aggregate Stated
Principal Balance of all of the Mortgage Loans (or related REO Properties)
immediately prior to such Distribution Date.

      Class M-3 Percentage: With respect to any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Class M-3 Certificates immediately
prior to such date and the denominator of which is the aggregate Stated
Principal Balance of all of the Mortgage Loans (or related REO Properties)
immediately prior to such Distribution Date.

      Class P Certificate: Any one of the Class P Certificates as designated on
the face thereof substantially in the forum of annexed hereto as Exhibit A-4,
executed by the Securities Administrator and authenticated and delivered by the
Securities Administrator representing the right to distributions of Prepayment
Penalties received on the Prepayment Penalty Mortgage Loans as set forth herein.

      Class Subordination Percentage: With respect to any Distribution Date and
each Class of Subordinate Certificates, the fraction (expressed as a percentage)
the numerator of which is the Class Certificate Balance of such Class of
Subordinate Certificates immediately prior to such Distribution Date and the
denominator of which is the aggregate of the Class Certificate Balances of all
Classes of Certificates immediately prior to such Distribution Date.

      Class X-A Notional Amount: As of any date, an amount equal to the Original
Class X-A Notional Amount reduced (or increased) by an amount equal to the
reduction (or increase) of the Class Certificate Balance of the Class I-A
Certificates.

      Closing Date: July 28, 2006.

      Code: The Internal Revenue Code of 1986, as amended.

      Commission: The Securities and Exchange Commission.

      Compensating Interest Payment: As defined in Section 6.06.

      Cooperative: A corporation that has been formed for the purpose of
cooperative apartment ownership.

      Cooperative Assets: Shares issued by Cooperatives, the related Cooperative
Lease and any other collateral securing the Cooperative Loans.

      Cooperative Lease: With respect to a Cooperative Loan, the proprietary
lease or occupancy agreement with respect to the cooperative apartment occupied
by the Mortgagor and

                                      -12-
<PAGE>

relating to the related Cooperative Assets, which lease or agreement confers an
exclusive right to the holder of such Cooperative Assets to occupy such
apartment.

      Cooperative Loan: The indebtedness of a Mortgagor evidenced by a Mortgage
Note which is secured by Cooperative Assets and which is being sold to the
Depositor pursuant to this Agreement, the Mortgage Loans so sold being
identified in the Mortgage Loan Schedule.

      Cooperative Stock: With respect to a Cooperative Loan, the single
outstanding class of stock, partnership interest or other ownership instrument
in the related Cooperative.

      Corporate Trust Office: With respect to the Trustee, the principal
corporate trust office of the Trustee at which at any particular time its
corporate trust business in connection with this Agreement shall be
administered, which office at the date of the execution of this instrument is
located at HSBC Bank USA, National Association, 452 Fifth Avenue, New York, New
York 10018, Attention: Issuer Services - Merrill Lynch Mortgage Investors, Inc.,
MLMI Series 2006-A4, or at such other address as the Trustee may designate from
time to time by notice to the Certificateholders, the Depositor and the Master
Servicer and with respect to the Securities Administrator, for Certificate
transfer purposes, Wells Fargo Center, Sixth Street and Marquette Avenue,
Minneapolis, Minnesota 55479, Attn: Corporate Trust Services - MLMI 2006-A4, and
for all other purposes, 9062 Old Annapolis Road, Columbia, Maryland, 21045,
Attn: Corporate Trust Services - MLMI 2006-A4.

      Corresponding Class or Classes of Certificates: With respect to each REMIC
2 Regular Interest, the Class or Classes of Certificates appearing opposite such
REMIC 2 Regular Interest as described in the Preliminary Statement hereto.

      Countrywide: Countrywide Home Loans Servicing LP or any successor thereto.

      Countrywide Assignment Agreement: The Assignment, Assumption and
Recognition Agreement, dated as of July 1, 2006, among Countrywide, the
Depositor and the Seller pursuant to which the Countrywide Servicing Agreement
and the rights of the Seller thereunder (other than the rights to enforce the
representations and warranties with respect to the Countrywide Loans) were
assigned to the Depositor for the benefit of the Certificateholders.

      Countrywide Loans: The Mortgage Loans serviced by Countrywide pursuant to
the Countrywide Servicing Agreement.

      Countrywide Servicing Agreement: The Master Mortgage Loan Purchase and
Servicing Agreement dated as of November 1, 2004, between Countrywide Home Loans
Inc. as seller and MLBUSA as purchaser, as amended by the Regulation AB
Amendment thereto, as at any time in effect.

      Credit Support Depletion Date: The first Distribution Date on which the
aggregate Class Certificate Balance of the Subordinate Certificates is reduced
to zero.

      Curtailment: Any Principal Prepayment made by a Mortgagor which is not a
Principal Prepayment in Full.

                                      -13-
<PAGE>

      Custodial Agreement: An agreement, dated as of the Closing Date among the
Depositor, the Master Servicer, the Securities Administrator, the Trustee and
the Custodian in substantially the form of Exhibit G hereto.

      Custodian: Wells Fargo Bank, N.A., including any successors in interest,
or any successor custodian appointed pursuant to the provisions hereof and of
the Custodial Agreement.

      Cut-off Date: July 1, 2006.

      Debt Service Reduction: Any reduction of the Monthly Payments which a
Mortgagor is obligated to pay with respect to a Mortgage Loan as a result of any
proceeding under the Bankruptcy Code or any other similar state law or other
proceeding.

      Defective Mortgage Loan: A Mortgage Loan replaced or to be replaced by one
or more Substitute Mortgage Loans.

      Deficient Valuation: With respect to any Mortgage Loan, a valuation of the
related Mortgaged Property by a court of competent jurisdiction in an amount
less than the then outstanding principal balance of the Mortgage Loan, which
valuation results from a proceeding initiated under the Bankruptcy Code.

      Definitive Certificates: As defined in Section 5.06.

      Depositor: Merrill Lynch Mortgage Investors, Inc., a Delaware corporation,
or any successor in interest.

      Depository: The Depository Trust Company, the nominee of which is Cede &
Co., or any successor thereto.

      Depository Participant: A broker, dealer, bank or other financial
institution or other Person for whom from time to time the Depository effects
book-entry transfers and pledges of securities deposited with the Depository.

      Designated Depository Institution: A depository institution (commercial
bank, federal savings bank, mutual savings bank or savings and loan association)
or trust company (which may include the Trustee), the deposits of which are
fully insured by the FDIC to the extent provided by law.

      Determination Date: With respect to each Mortgage Loan, the Determination
Date as defined in the related Servicing Agreement.

      Disqualified Organization: A "disqualified organization" as defined in
Section 860 E(e)(5) of the Code.

      Distribution Account: The trust account or accounts created and maintained
pursuant to Section 4.04, which shall be denominated "Wells Fargo Bank, National
Association, as Securities Administrator for HSBC Bank USA, National
Association, as Trustee f/b/o holders of

                                      -14-
<PAGE>

Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through Certificates, MLMI
Series 2006-A4 - Distribution Account." The Distribution Account shall be an
Eligible Account.

      Distribution Account Deposit Date: The Business Day prior to each
Distribution Date.

      Distribution Date: The 25th day of any month, beginning in August 2006,
or, if such 25th day is not a Business Day, the Business Day immediately
following.

      Due Date: With respect to each Mortgage Loan, the date in each month on
which its Monthly Payment is due if such due date is the first day of a month
and otherwise is deemed to be the first day of the following month or such other
date specified in the related Servicing Agreement.

      Due Period: With respect to any Distribution Date and each Mortgage Loan,
the period commencing on the second day of the month preceding the month in
which the Distribution Date occurs and ending at the close of business on the
first day of the month in which the Distribution Date occurs.

      Eligible Account: Any of (i) a segregated account maintained with a
federal or state chartered depository institution (A) the short-term obligations
of which are rated A-1 or better by S&P and P-1 by Moody's at the time of any
deposit therein or (B) insured by the FDIC (to the limits established by such
Corporation), the uninsured deposits (as evidenced in writing by the Rating
Agencies that use of any such account as the Distribution Account will not have
an adverse effect on the then-current ratings assigned to the Classes of
Certificates then rated by the Rating Agencies) in which account are otherwise
secured such that, as evidenced by an Opinion of Counsel (obtained by the Person
requesting that the account be held pursuant to this clause (i)) delivered to
the Securities Administrator prior to the establishment of such account, the
Certificateholders will have a claim with respect to the funds in such account
and a perfected first priority security interest against any collateral (which
shall be limited to Permitted Investments, each of which shall mature not later
than the Business Day immediately preceding the Distribution Date next following
the date of investment in such collateral or the Distribution Date if such
Permitted Investment is an obligation of the institution that maintains the
Distribution Account) securing such funds that is superior to claims of any
other depositors or general creditors of the depository institution with which
such account is maintained, (ii) a segregated trust account or accounts
maintained with a federal or state chartered depository institution or trust
company with trust powers acting in its fiduciary capacity or (iii) a segregated
account or accounts of a depository institution acceptable to the Rating
Agencies (as evidenced in writing by the Rating Agencies that use of any such
account as the Distribution Account will not have an adverse effect on the
then-current ratings assigned to the Classes of the Certificates then rated by
the Rating Agencies). Eligible Accounts may bear interest.

      ERISA: The Employee Retirement Income Security Act of 1974, as amended.

      ERISA-Qualifying Underwriting: A best efforts or firm commitment
underwriting or private placement that would satisfy the requirements of
Prohibited Transaction Exemption 90-29, Exemption Application No. D-8012, 55
Fed. Reg. 21459 (1990), as amended, granted to the Underwriter by the United
States Department of Labor (or any other applicable underwriter's

                                      -15-
<PAGE>

exemption granted by the United States Department of Labor), except, in relevant
part, for the requirement that the certificates have received a rating at the
time of acquisition that is in one of the three (or four, in the case of a
"designated transaction") highest generic rating categories by at least one of
the Rating Agencies.

      ERISA Restricted Certificates: Any of the Class B-1, Class B-2, Class B-3
or Class P Certificates, and any other Certificate, as long as the acquisition
and holding of such Certificate is not covered by and exempt under an
underwriter's exemption.

      Event of Default: An event of default described in Section 8.01.

      Excess Liquidation Proceeds: To the extent that such amount is not
required by law to be paid to the related Mortgagor, the amount, if any, by
which Liquidation Proceeds with respect to a Liquidated Mortgage Loan exceed the
sum of (i) the Outstanding Principal Balance of such Mortgage Loan and accrued
but unpaid interest at the related Mortgage Interest Rate through the last day
of the month in which the related Liquidation Date occurs, plus (ii) related
Liquidation Expenses.

      Exchange Act: The Securities Exchange Act of 1934, as amended.

      Extraordinary Loss: Any Realized Loss or portion thereof caused by or
resulting from:

            (i) nuclear or chemical reaction or nuclear radiation or radioactive
      or chemical contamination, all whether controlled or uncontrolled and
      whether such loss be direct or indirect, proximate or remote;

            (ii) hostile or warlike action in time of peace or war, including
      action in hindering, combating or defending against an actual, impending
      or expected attack by any government or sovereign power, de jure or de
      facto, or by any authority maintaining or using military, naval or air
      forces, or by military, naval or air forces, or by an agent of any such
      government, power, authority or forces;

            (iii) any weapon of war employing atomic fission or radioactive
      forces whether in time of peace or war, and

            (iv) insurrection, rebellion, revolution, civil war, usurped power
      or action taken by governmental authority in hindering, combating or
      defending against such an occurrence, seizure or destruction under
      quarantine or customs regulations, confiscation by order of any government
      or public authority, or risks of contraband or illegal transactions or
      trade.

      Extraordinary Trust Fund Expenses: Any amounts reimbursable to the Master
Servicer or the Depositor pursuant to this Agreement, including but not limited
to Sections 4.03, 4.05 and 7.04, any amounts reimbursable to the Trustee and the
Securities Administrator from the Trust Fund pursuant to this Agreement,
including but not limited to Section 9.05, and any other costs, expenses,
liabilities and losses borne by the Trust Fund (exclusive of any cost, expense,
liability or loss that is specific to a particular Mortgage Loan or REO Property
and is taken into account in calculating a Realized Loss in respect thereof) for
which the Trust Fund has not and, in the

                                      -16-
<PAGE>

reasonable good faith judgment of the Securities Administrator, shall not,
obtain reimbursement or indemnification from any other Person.

      Fannie Mae: Federal National Mortgage Association or any successor
thereto.

      FDIC: Federal Deposit Insurance Corporation or any successor thereto.

      Final Certification: The certification substantially in the form of
Exhibit Two to the Custodial Agreement.

      Fitch: Fitch Ratings or its successor in interest.

      Form 8-K Disclosure Information: As defined in Section 3.18(a).

      Freddie Mac: Freddie Mac, formerly the Federal Home Loan Mortgage
Corporation, or any successor thereto.

      Global Certificate: Any Private Certificate registered in the name of the
Depository or its nominee, beneficial interests in which are reflected on the
books of the Depository or on the books of a Person maintaining an account with
such Depository (directly or as an indirect participant in accordance with the
rules of such depository).

      GreenPoint: GreenPoint Mortgage Funding, Inc., or any successor thereto.

      GreenPoint Assignment Agreement: The Assignment, Assumption and
Recognition Agreement, dated as of July 1, 2006, among GreenPoint, the Depositor
and the Seller pursuant to which the GreenPoint Servicing Agreement and the
rights of the Seller thereunder (other than the rights to enforce the
representations and warranties with respect to the GreenPoint Loans) were
assigned to the Depositor for the benefit of the Certificateholders.

      GreenPoint Loans: The Mortgage Loans serviced by GreenPoint pursuant to
the GreenPoint Servicing Agreement.

      GreenPoint Servicing Agreement: The Master Mortgage Loan Purchase and
Servicing Agreement, dated as of April 1, 2003, among Merrill Lynch Mortgage
Holdings Inc., Terwin Advisors LLC and GreenPoint (as amended and in effect at
any time).

      Gross Margin: As to each Mortgage Loan, the fixed percentage set forth in
the related Mortgage Note and indicated on the Mortgage Loan Schedule which
percentage is added to the related Index on each Interest Adjustment Date to
determine (subject to rounding, the minimum and maximum Mortgage Interest Rate
and the Periodic Rate Cap) the Mortgage Interest Rate until the next Interest
Adjustment Date.

      Group I Available Funds: With respect to any Distribution Date and the
Group I Mortgage Loans, an amount equal to the excess of (i) the sum of (a) the
aggregate of the related Monthly Payments received on or prior to the related
Determination Date, (b) Liquidation Proceeds, Insurance Proceeds, Principal
Prepayments, Subsequent Recoveries and other unscheduled recoveries of principal
and interest in respect of the Group I Mortgage Loans during

                                      -17-
<PAGE>

the related Prepayment Period, (c) the aggregate of any amounts received in
respect of a related REO Property withdrawn from any Protected Account and
deposited in the Master Servicer Collection Account for such Distribution Date,
(d) the aggregate of any amounts deposited in the Master Servicer Collection
Account by the related Servicer or the Master Servicer in respect of related
Prepayment Interest Shortfalls for such Distribution Date and (e) the aggregate
of any related Monthly Advances made by the related Servicer or the Master
Servicer for such Distribution Date, over (ii) the sum of (a) related amounts
reimbursable or payable to the related Servicer or the Master Servicer pursuant
to Sections 4.03 and 4.05, (b) related amounts deposited in the Master Servicer
Collection Account or the Distribution Account, as the case may be, in error and
(c) any Extraordinary Trust Fund Expenses.

      Group I Certificates: The Class I-A, Class X-A and Class A-R Certificates.

      Group I Maximum Rate Cap: With respect to any Distribution Date, the
weighted average of the maximum lifetime Net Mortgage Rates for the Group I
Mortgage Loans multiplied by 30 and divided by the actual number of days in the
related Interest Accrual Period.

      Group I Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule.

      Group I Net WAC Cap: With respect to any Distribution Date, the weighted
average of the Net Mortgage Rates for the Group I Mortgage Loans multiplied by
30 and divided by the actual number of days in the related Interest Accrual
Period.

      Group I Senior Accelerated Distribution Percentage: With respect to any
Distribution Date, the percentage indicated below:

<TABLE>
<CAPTION>
                                        Group I Senior Accelerated
       Distribution Date                   Distribution Percentage
-----------------------------  --------------------------------------------------
<S>                            <C>
August 2006 through July 2013  100%

August 2013 through July 2014  Group I Senior Percentage, plus 70% of the Group I
                               Subordinate Percentage

August 2014 through July 2015  Group I Senior Percentage, plus 60% of the Group I
                               Subordinate Percentage

August 2015 through July 2016  Group I Senior Percentage, plus 40% of the Group I
                               Subordinate Percentage

August 2016 through July 2017  Group I Senior Percentage, plus 20% of the Group I
                               Subordinate Percentage

August 2017 and thereafter     Group I Senior Percentage
</TABLE>

provided, however, (i) that any scheduled reduction to the Group I Senior
Accelerated Distribution Percentage described above shall not occur as of any
Distribution Date unless either (a)(1)(x) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months as a percentage of

                                      -18-
<PAGE>

the aggregate outstanding Class Certificate Balance of the Class M Certificates
and the Class B Certificates, is less than 50%, or (y) the outstanding principal
balance of Mortgage Loans delinquent 60 days or more (including foreclosure and
REO Property) averaged over the last six months, as a percentage of the
aggregate outstanding principal balance of all Mortgage Loans averaged over the
last six months, does not exceed 2% and (2) Realized Losses on the Mortgage
Loans to date for such Distribution Date if occurring during the eighth, ninth,
tenth, eleventh or twelfth year (or any year thereafter) after the Closing Date
are less than 30%, 35%, 40%, 45% or 50%, respectively, of the sum of the Initial
Class Certificate Balances of the Class M Certificates and Class B Certificates
or (b) (1) the aggregate outstanding principal balance of the Mortgage Loans
delinquent 60 days or more (including foreclosure and REO Property) averaged
over the last six months, as a percentage of the aggregate outstanding principal
balance of all Mortgage Loans averaged over the last six months, does not exceed
4% and (2) Realized Losses on the Mortgage Loans on or prior to such
Distribution Date if occurring during the eighth, ninth, tenth, eleventh or
twelfth year (or any year thereafter) after the Closing Date are less than 10%,
15%, 20%, 25% or 30%, respectively, of the sum of the Initial Class Certificate
Balances of the Class M Certificates and Class B Certificates and (ii) that for
any Distribution Date on which the Group I Senior Percentage is greater than the
Original Group I Senior Percentage, the Group I Senior Accelerated Distribution
Percentage, Group II Senior Accelerated Distribution Percentage, Group III
Senior Accelerated Distribution Percentage, Group IV Senior Accelerated
Distribution Percentage and Group V Senior Accelerated Distribution Percentage
for such Distribution Date shall be 100%. Notwithstanding the foregoing, upon
the reduction of the aggregate Class Certificate Balance of the Group I
Certificates to zero, the Group I Senior Accelerated Distribution Percentage
will equal 0%.

      In addition, on any Distribution Date on or after the Distribution Date
occurring in August 2009, if the current weighted average of the Subordinate
Percentages for the Certificates is equal to or greater than two times the
initial weighted average of the Subordinate Percentages for the Certificates,
and (a) the outstanding principal balance of the Mortgage Loans delinquent 60
days or more (including for this purpose any such Mortgage Loans in foreclosure
or bankruptcy and such Mortgage Loans with respect to which the related
Mortgaged Property has been acquired by the Issuing Entity), averaged over the
last six months, as a percentage of the Subordinate Percentage for that
Distribution Date times the aggregate Stated Principal Balance of the Mortgage
Loans, does not exceed 50% and (b) cumulative Realized Losses on the Mortgage
Loans do not exceed 20% of the initial Subordinate Percentage times the
aggregate Stated Principal Balance of the Mortgage Loans as of the Cut-off Date,
then, in each case, the Group I Senior Accelerated Distribution Percentage for
such Distribution Date will be equal to, prior to the Distribution Date
occurring in August 2009, the Group I Senior Percentage plus 50% of the
Subordinate Percentage and, on or after the Distribution Date occurring in
August 2009, the Group I Senior Percentage.

      Group I Senior Percentage: As of any Distribution Date, the lesser of 100%
and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Group I Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Group I Mortgage Loans or related REO
Properties immediately prior to such Distribution Date.

                                      -19-
<PAGE>

      Group I Senior Principal Distribution Amount: As to any Distribution Date,
the lesser of (a) the balance of the Group I Available Funds remaining after the
distribution of all amounts required to be distributed pursuant to subclause
first and second of Section 6.01(A) and (b) the sum of the following:

                  (A) the Group I Senior Percentage for such Distribution Date
      times the sum of the following:

                        (1) the principal portion of each Monthly Payment due
            during the related Due Period on each Outstanding Mortgage Loan in
            Loan Group I, whether or not received on or prior to the related
            Determination Date, minus the principal portion of any Debt Service
            Reduction;

                        (2) the Stated Principal Balance of any Group I Mortgage
            Loan repurchased during the related Prepayment Period pursuant to
            Section 2.02 or 2.03 hereof or pursuant to the related Servicing
            Agreement; and

                        (3) the principal portion of all other unscheduled
            collections, including Subsequent Recoveries (other than Principal
            Prepayments in Full and Curtailments and amounts received in
            connection with the liquidation or disposition of a Group I Mortgage
            Loan, including without limitation Insurance Proceeds, Liquidation
            Proceeds and REO Proceeds) received during the related Prepayment
            Period to the extent applied by the related Servicer as recoveries
            of principal of the related Mortgage Loan pursuant to related
            Servicing Agreement;

                  (B) with respect to the liquidation or other disposition of a
      Group I Mortgage Loan which occurred during the related Prepayment Period
      and did not result in any Extraordinary Losses, an amount equal to the
      lesser of (a) the Group I Senior Percentage for such Distribution Date
      times the Stated Principal Balance of such Group I Mortgage Loan and (b)
      the Group I Senior Accelerated Distribution Percentage for such
      Distribution Date times the related unscheduled collections (including
      without limitation Insurance Proceeds, Liquidation Proceeds and REO
      Proceeds) to the extent applied by the related Servicer or the Master
      Servicer as recoveries of principal of the related Mortgage Loan pursuant
      to the related Servicing Agreement or this Agreement;

                  (C) the Group I Senior Accelerated Distribution Percentage for
      such Distribution Date times the aggregate of all Principal Prepayments in
      Full and Curtailments received in the related Prepayment Period with
      respect to the Group I Mortgage Loans; and

                  (D) any amounts described in clauses (A), (B) or (C) of this
      definition, as determined for any previous Distribution Date, which remain
      unpaid after application of amounts previously distributed pursuant to
      this clause (D) to the extent that such amounts are not attributable to
      Realized Losses which have been allocated to the Class M Certificates or
      Class B Certificates.

                                      -20-
<PAGE>

      Group I Subordinate Amount: On any date of determination, the excess of
the aggregate Stated Principal Balance of the Group I Mortgage Loans as of such
date over the aggregate Class Certificate Balances of the Group I Certificates
then outstanding.

      Group II Available Funds: With respect to any Distribution Date and the
Group II Mortgage Loans, an amount equal to the excess of (i) the sum of (a) the
aggregate of the related Monthly Payments received on or prior to the related
Determination Date, (b) Liquidation Proceeds, Insurance Proceeds, Principal
Prepayments, Subsequent Recoveries and other unscheduled recoveries of principal
and interest in respect of the Group II Mortgage Loans during the related
Prepayment Period, (c) the aggregate of any amounts received in respect of a
related REO Property withdrawn from any Protected Account and deposited in the
Master Servicer Collection Account for such Distribution Date, (d) the aggregate
of any amounts deposited in the Master Servicer Collection Account by the
related Servicer or the Master Servicer in respect of related Prepayment
Interest Shortfalls for such Distribution Date and (e) the aggregate of any
related Monthly Advances made by the related Servicer or the Master Servicer for
such Distribution Date, over (ii) the sum of (a) related amounts reimbursable or
payable to the related Servicer or the Master Servicer pursuant to Sections 4.03
and 4.05, (b) related amounts deposited in the Master Servicer Collection
Account or the Distribution Account, as the case may be, in error and (c) any
Extraordinary Trust Fund Expenses.

      Group II Certificates: The Class II-A Certificates.

      Group II Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule.

      Group II Senior Accelerated Distribution Percentage: With respect to any
Distribution Date, the percentage indicated below:

<TABLE>
<CAPTION>
                                            Group II Senior Accelerated
       Distribution Date                      Distribution Percentage
-----------------------------  ----------------------------------------------------
<S>                            <C>
August 2006 through July 2013  100%

August 2013 through July 2014  Group II Senior Percentage, plus 70% of the Group II
                               Subordinate Percentage

August 2014 through July 2015  Group II Senior Percentage, plus 60% of the Group II
                               Subordinate Percentage

August 2015 through July 2016  Group II Senior Percentage, plus 40% of the Group II
                               Subordinate Percentage

August 2016 through July 2017  Group II Senior Percentage, plus 20% of the Group II
                               Subordinate Percentage

August 2017 and thereafter     Group II Senior Percentage
</TABLE>

provided, however, (i) that any scheduled reduction to the Group II Senior
Accelerated Distribution Percentage described above shall not occur as of any
Distribution Date unless either (a)(1)(x) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months as a percentage of the aggregate
outstanding Class Certificate Balance of the Class M Certificates and the Class
B Certificates, is less than 50%, or (y) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more

                                      -21-
<PAGE>

(including foreclosure and REO Property) averaged over the last six months, as a
percentage of the aggregate outstanding principal balance of all Mortgage Loans
averaged over the last six months, does not exceed 2% and (2) Realized Losses on
the Mortgage Loans to date for such Distribution Date if occurring during the
eighth, ninth, tenth, eleventh or twelfth year (or any year thereafter) after
the Closing Date are less than 30%, 35%, 40%, 45% or 50%, respectively, of the
sum of the Initial Class Certificate Balances of the Class M Certificates and
Class B Certificates or (b) (1) the aggregate outstanding principal balance of
the Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months, as a percentage of the aggregate
outstanding principal balance of all Mortgage Loans averaged over the last six
months, does not exceed 4% and (2) Realized Losses on the Mortgage Loans on or
prior to such Distribution Date if occurring during the eighth, ninth, tenth,
eleventh or twelfth year (or any year thereafter) after the Closing Date are
less than 10%, 15%, 20%, 25% or 30%, respectively, of the sum of the Initial
Class Certificate Balances of the Class M Certificates and Class B Certificates
and (ii) that for any Distribution Date on which the Group II Senior Percentage
is greater than the Original Group II Senior Percentage, the Group I Senior
Accelerated Distribution Percentage, Group II Senior Accelerated Distribution
Percentage, Group III Senior Accelerated Distribution Percentage, Group IV
Senior Accelerated Distribution Percentage and Group V Senior Accelerated
Distribution Percentage for such Distribution Date shall be 100%.
Notwithstanding the foregoing, upon the reduction of the aggregate Class
Certificate Balance of the Group II Certificates to zero, the Group II Senior
Accelerated Distribution Percentage will equal 0%.

      In addition, on any Distribution Date on or after the Distribution Date
occurring in August 2009, if the current weighted average of the Subordinate
Percentages for the Certificates is equal to or greater than two times the
initial weighted average of the Subordinate Percentages for the Certificates,
and (a) the outstanding principal balance of the Mortgage Loans delinquent 60
days or more (including for this purpose any such Mortgage Loans in foreclosure
or bankruptcy and such Mortgage Loans with respect to which the related
Mortgaged Property has been acquired by the Trust), averaged over the last six
months, as a percentage of the Subordinate Percentage for that Distribution Date
times the aggregate Stated Principal Balance of the Mortgage Loans, does not
exceed 50% and (b) cumulative Realized Losses on the Mortgage Loans do not
exceed 20% of the initial Subordinate Percentage times the aggregate Stated
Principal Balance of the Mortgage Loans as of the Cut-off Date, then, in each
case, the Group II Senior Accelerated Distribution Percentage for such
Distribution Date will be equal to, prior to the Distribution Date occurring in
August 2009, the Group II Senior Percentage plus 50% of the Subordinate
Percentage and, on or after the Distribution Date occurring in August 2009, the
Group II Senior Percentage.

      Group II Senior Percentage: As of any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Group II Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Group II Mortgage Loans or related REO
Properties immediately prior to such Distribution Date.

                                      -22-
<PAGE>

      Group II Senior Principal Distribution Amount: As to any Distribution
Date, the lesser of (a) the balance of the Group II Available Funds remaining
after the distribution of all amounts required to be distributed pursuant to
Section 6.01(B) and (b) the sum of the following:

                  (A) the Group II Senior Percentage for such Distribution Date
      times the sum of the following:

                        (1) the principal portion of each Monthly Payment due
            during the related Due Period on each Outstanding Mortgage Loan in
            Loan Group II, whether or not received on or prior to the related
            Determination Date, minus the principal portion of any Debt Service
            Reduction;

                        (2) the Stated Principal Balance of any Group II
            Mortgage Loan repurchased during the related Prepayment Period
            pursuant to Section 2.02 or 2.03 hereof or the related Servicing
            Agreement; and

                        (3) the principal portion of all other unscheduled
            collections, including Subsequent Recoveries (other than Principal
            Prepayments in Full and Curtailments and amounts received in
            connection with the liquidation or disposition of a Group II
            Mortgage Loan, including without limitation Insurance Proceeds,
            Liquidation Proceeds and REO Proceeds) received during the related
            Prepayment Period to the extent applied by the related Servicer as
            recoveries of principal of the related Mortgage Loan pursuant to
            related Servicing Agreement;

                  (B) with respect to the liquidation or other disposition of a
      Group II Mortgage Loan which occurred during the related Prepayment Period
      and did not result in any Extraordinary Losses, an amount equal to the
      lesser of (a) the Group II Senior Percentage for such Distribution Date
      times the Stated Principal Balance of such Group II Mortgage Loan and (b)
      the Group II Senior Accelerated Distribution Percentage for such
      Distribution Date times the related unscheduled collections (including
      without limitation Insurance Proceeds, Liquidation Proceeds and REO
      Proceeds) to the extent applied by the related Servicer or the Master
      Servicer as recoveries of principal of the related Mortgage Loan pursuant
      to the related Servicing Agreement or this Agreement;

                  (C) the Group II Senior Accelerated Distribution Percentage
      for such Distribution Date times the aggregate of all Principal
      Prepayments in Full and Curtailments received in the related Prepayment
      Period with respect to the Group II Mortgage Loans; and

                  (D) any amounts described in clauses (A), (B) or (C) of this
      definition, as determined for any previous Distribution Date, which remain
      unpaid after application of amounts previously distributed pursuant to
      this clause (D) to the extent that such amounts are not attributable to
      Realized Losses which have been allocated to the Class M Certificates or
      Class B Certificates.

      Group II Subordinate Amount: On any date of determination, the excess of
the aggregate Stated Principal Balance of the Group II Mortgage Loans as of such
date over the aggregate Class Certificate Balances of the Group II Certificates
then outstanding.

                                      -23-
<PAGE>

      Group III Available Funds: With respect to any Distribution Date and the
Group III Mortgage Loans, an amount equal to the excess of (i) the sum of (a)
the aggregate of the related Monthly Payments received on or prior to the
related Determination Date, (b) Liquidation Proceeds, Insurance Proceeds,
Principal Prepayments, Subsequent Recoveries and other unscheduled recoveries of
principal and interest in respect of the Group III Mortgage Loans during the
related Prepayment Period, (c) the aggregate of any amounts received in respect
of a related REO Property withdrawn from any Protected Account and deposited in
the Master Servicer Collection Account for such Distribution Date, (d) the
aggregate of any amounts deposited in the Master Servicer Collection Account by
the related Servicer or the Master Servicer in respect of related Prepayment
Interest Shortfalls for such Distribution Date and (e) the aggregate of any
related Monthly Advances made by the related Servicer or the Master Servicer for
such Distribution Date, over (ii) the sum of (a) related amounts reimbursable or
payable to the related Servicer or the Master Servicer pursuant to Sections 4.03
and 4.05, (b) related amounts deposited in the Master Servicer Collection
Account or the Distribution Account, as the case may be, in error and (c) any
Extraordinary Trust Fund Expenses.

      Group III Certificates: The Class III-A-1 and Class III-A-2 Certificates.

      Group III Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule.

      Group III Senior Accelerated Distribution Percentage: With respect to any
Distribution Date, the percentage indicated below:

<TABLE>
<CAPTION>
                                            Group III Senior Accelerated
       Distribution Date                      Distribution Percentage
-----------------------------  -------------------------------------------------
<S>                            <C>
August 2006 through July 2013  100%

August 2013 through July 2014  Group III Senior Percentage, plus 70% of the Group
                               III Subordinate Percentage

August 2014 through July 2015  Group III Senior Percentage, plus 60% of the Group
                               III Subordinate Percentage

August 2015 through July 2016  Group III Senior Percentage, plus 40% of the Group
                               III Subordinate Percentage

August 2016 through July 2017  Group III Senior Percentage, plus 20% of the Group
                               III Subordinate Percentage

August 2017 and thereafter     Group III Senior Percentage
</TABLE>

provided, however, (i) that any scheduled reduction to the Group III Senior
Accelerated Distribution Percentage described above shall not occur as of any
Distribution Date unless either (a)(1)(x) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months as a percentage of the aggregate
outstanding Class Certificate Balance of the Class M Certificates and the Class
B Certificates, is less than 50%, or (y) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six

                                      -24-
<PAGE>

months, as a percentage of the aggregate outstanding principal balance of all
Mortgage Loans averaged over the last six months, does not exceed 2% and (2)
Realized Losses on the Mortgage Loans to date for such Distribution Date if
occurring during the eighth, ninth, tenth, eleventh or twelfth year (or any year
thereafter) after the Closing Date are less than 30%, 35%, 40%, 45% or 50%,
respectively, of the sum of the Initial Class Certificate Balances of the Class
M Certificates and Class B Certificates or (b) (1) the aggregate outstanding
principal balance of the Mortgage Loans delinquent 60 days or more (including
foreclosure and REO Property) averaged over the last six months, as a percentage
of the aggregate outstanding principal balance of all Mortgage Loans averaged
over the last six months, does not exceed 4% and (2) Realized Losses on the
Mortgage Loans on or prior to such Distribution Date if occurring during the
eighth, ninth, tenth, eleventh or twelfth year (or any year thereafter) after
the Closing Date are less than 10%, 15%, 20%, 25% or 30%, respectively, of the
sum of the Initial Class Certificate Balances of the Class M Certificates and
Class B Certificates and (ii) that for any Distribution Date on which the Group
III Senior Percentage is greater than the Original Group III Senior Percentage,
the Group I Senior Accelerated Distribution Percentage, Group II Senior
Accelerated Distribution Percentage, Group III Senior Accelerated Distribution
Percentage, Group IV Senior Accelerated Distribution Percentage and Group V
Senior Accelerated Distribution Percentage for such Distribution Date shall be
100%. Notwithstanding the foregoing, upon the reduction of the aggregate Class
Certificate Balance of the Group III Certificates to zero, the Group III Senior
Accelerated Distribution Percentage will equal 0%.

      In addition, on any Distribution Date on or after the Distribution Date
occurring in August 2009, if the current weighted average of the Subordinate
Percentages for the Certificates is equal to or greater than two times the
initial weighted average of the Subordinate Percentages for the Certificates,
and (a) the outstanding principal balance of the Mortgage Loans delinquent 60
days or more (including for this purpose any such Mortgage Loans in foreclosure
or bankruptcy and such Mortgage Loans with respect to which the related
Mortgaged Property has been acquired by the Trust), averaged over the last six
months, as a percentage of the Subordinate Percentage for that Distribution Date
times the aggregate Stated Principal Balance of the Mortgage Loans, does not
exceed 50% and (b) cumulative Realized Losses on the Mortgage Loans do not
exceed 20% of the initial Subordinate Percentage times the aggregate Stated
Principal Balance of the Mortgage Loans as of the Cut-off Date, then, in each
case, the Group III Senior Accelerated Distribution Percentage for such
Distribution Date will be equal to, prior to the Distribution Date occurring in
August 2009, the Group III Senior Percentage plus 50% of the Subordinate
Percentage and, on or after the Distribution Date occurring in June August, the
Group III Senior Percentage.

      Group III Senior Percentage: As of any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Group III Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Group III Mortgage Loans or related REO
Properties immediately prior to such Distribution Date.

      Group III Senior Principal Distribution Amount: As to any Distribution
Date, the lesser of (a) the balance of the Group III Available Funds remaining
after the distribution of all amounts required to be distributed pursuant to
Section 6.01(C) and (b) the sum of the following:

                                      -25-
<PAGE>

                  (A) the Group III Senior Percentage for such Distribution Date
      times the sum of the following:

                        (1) the principal portion of each Monthly Payment due
            during the related Due Period on each Outstanding Mortgage Loan in
            Loan Group II, whether or not received on or prior to the related
            Determination Date, minus the principal portion of any Debt Service
            Reduction;

                        (2) the Stated Principal Balance of any Group III
            Mortgage Loan repurchased during the related Prepayment Period
            pursuant to Section 2.02 or 2.03 hereof or the related Servicing
            Agreement; and

                        (3) the principal portion of all other unscheduled
            collections, including Subsequent Recoveries (other than Principal
            Prepayments in Full and Curtailments and amounts received in
            connection with the liquidation or disposition of a Group III
            Mortgage Loan, including without limitation Insurance Proceeds,
            Liquidation Proceeds and REO Proceeds) received during the related
            Prepayment Period to the extent applied by the related Servicer as
            recoveries of principal of the related Mortgage Loan pursuant to
            related Servicing Agreement;

                  (B) with respect to the liquidation or other disposition of a
      Group III Mortgage Loan which occurred during the related Prepayment
      Period and did not result in any Extraordinary Losses, an amount equal to
      the lesser of (a) the Group III Senior Percentage for such Distribution
      Date times the Stated Principal Balance of such Group III Mortgage Loan
      and (b) the Group III Senior Accelerated Distribution Percentage for such
      Distribution Date times the related unscheduled collections (including
      without limitation Insurance Proceeds, Liquidation Proceeds and REO
      Proceeds) to the extent applied by the related Servicer or the Master
      Servicer as recoveries of principal of the related Mortgage Loan pursuant
      to the related Servicing Agreement or this Agreement;

                  (C) the Group III Senior Accelerated Distribution Percentage
      for such Distribution Date times the aggregate of all Principal
      Prepayments in Full and Curtailments received in the related Prepayment
      Period with respect to the Group III Mortgage Loans; and

                  (D) any amounts described in clauses (A), (B) or (C) of this
      definition, as determined for any previous Distribution Date, which remain
      unpaid after application of amounts previously distributed pursuant to
      this clause (D) to the extent that such amounts are not attributable to
      Realized Losses which have been allocated to the Class M Certificates or
      Class B Certificates.

      Group III Subordinate Amount: On any date of determination, the excess of
the aggregate Stated Principal Balance of the Group III Mortgage Loans as of
such date over the aggregate Class Certificate Balances of the Group III
Certificates then outstanding.

      Group IV Available Funds: With respect to any Distribution Date and the
Group IV Mortgage Loans, an amount equal to the excess of (i) the sum of (a) the
aggregate of the related Monthly Payments received on or prior to the related
Determination Date, (b) Liquidation

                                      -26-
<PAGE>

Proceeds, Insurance Proceeds, Principal Prepayments, Subsequent Recoveries and
other unscheduled recoveries of principal and interest in respect of the Group
IV Mortgage Loans during the related Prepayment Period, (c) the aggregate of any
amounts received in respect of a related REO Property withdrawn from any
Protected Account and deposited in the Master Servicer Collection Account for
such Distribution Date, (d) the aggregate of any amounts deposited in the Master
Servicer Collection Account by the related Servicer or the Master Servicer in
respect of related Prepayment Interest Shortfalls for such Distribution Date and
(e) the aggregate of any related Monthly Advances made by the related Servicer
or the Master Servicer for such Distribution Date, over (ii) the sum of (a)
related amounts reimbursable or payable to the related Servicer or the Master
Servicer pursuant to Sections 4.03 and 4.05, (b) related amounts deposited in
the Master Servicer Collection Account or the Distribution Account, as the case
may be, in error and (c) any Extraordinary Trust Fund Expenses.

      Group IV Certificates: The Class IV-A-1 and Class IV-A-2 Certificates.

      Group IV Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule.

      Group IV Senior Accelerated Distribution Percentage: With respect to any
Distribution Date, the percentage indicated below:

<TABLE>
<CAPTION>
                                            Group IV Senior Accelerated
      Distribution Date                      Distribution Percentage
-----------------------------  ----------------------------------------------------
<S>                            <C>
August 2006 through July 2013  100%

August 2013 through July 2014  Group IV Senior Percentage, plus 70% of the Group IV
                               Subordinate Percentage

August 2014 through July 2015  Group IV Senior Percentage, plus 60% of the Group IV
                               Subordinate Percentage

August 2015 through July 2016  Group IV Senior Percentage, plus 40% of the Group IV
                               Subordinate Percentage

August 2016 through July 2017  Group IV Senior Percentage, plus 20% of the Group IV
                               Subordinate Percentage

August 2017 and thereafter     Group IV Senior Percentage
</TABLE>

provided, however, (i) that any scheduled reduction to the Group IV Senior
Accelerated Distribution Percentage described above shall not occur as of any
Distribution Date unless either (a)(1)(x) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months as a percentage of the aggregate
outstanding Class Certificate Balance of the Class M Certificates and the Class
B Certificates, is less than 50%, or (y) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months, as a percentage of the aggregate
outstanding principal balance of all Mortgage Loans averaged over the last six
months, does not exceed 2% and (2) Realized Losses on the Mortgage Loans to date
for such Distribution Date if occurring during the eighth, ninth, tenth,
eleventh or

                                      -27-
<PAGE>

twelfth year (or any year thereafter) after the Closing Date are less than 30%,
35%, 40%, 45% or 50%, respectively, of the sum of the Initial Class Certificate
Balances of the Class M Certificates and Class B Certificates or (b) (1) the
aggregate outstanding principal balance of the Mortgage Loans delinquent 60 days
or more (including foreclosure and REO Property) averaged over the last six
months, as a percentage of the aggregate outstanding principal balance of all
Mortgage Loans averaged over the last six months, does not exceed 4% and (2)
Realized Losses on the Mortgage Loans on or prior to such Distribution Date if
occurring during the eighth, ninth, tenth, eleventh or twelfth year (or any year
thereafter) after the Closing Date are less than 10%, 15%, 20%, 25% or 30%,
respectively, of the sum of the Initial Class Certificate Balances of the Class
M Certificates and Class B Certificates and (ii) that for any Distribution Date
on which the Group IV Senior Percentage is greater than the Original Group IV
Senior Percentage, the Group I Senior Accelerated Distribution Percentage, Group
II Senior Accelerated Distribution Percentage, Group III Senior Accelerated
Distribution Percentage, Group IV Senior Accelerated Distribution Percentage and
Group V Senior Accelerated Distribution Percentage for such Distribution Date
shall be 100%. Notwithstanding the foregoing, upon the reduction of the
aggregate Class Certificate Balance of the Group IV Certificates to zero, the
Group IV Senior Accelerated Distribution Percentage will equal 0%.

      In addition, on any Distribution Date on or after the Distribution Date
occurring in August 2009, if the current weighted average of the Subordinate
Percentages for the Certificates is equal to or greater than two times the
initial weighted average of the Subordinate Percentages for the Certificates,
and (a) the outstanding principal balance of the Mortgage Loans delinquent 60
days or more (including for this purpose any such Mortgage Loans in foreclosure
or bankruptcy and such Mortgage Loans with respect to which the related
Mortgaged Property has been acquired by the Trust), averaged over the last six
months, as a percentage of the Subordinate Percentage for that Distribution Date
times the aggregate Stated Principal Balance of the Mortgage Loans, does not
exceed 50% and (b) cumulative Realized Losses on the Mortgage Loans do not
exceed 20% of the initial Subordinate Percentage times the aggregate Stated
Principal Balance of the Mortgage Loans as of the Cut-off Date, then, in each
case, the Group IV Senior Accelerated Distribution Percentage for such
Distribution Date will be equal to, prior to the Distribution Date occurring in
August 2009, the Group IV Senior Percentage plus 50% of the Subordinate
Percentage and, on or after the Distribution Date occurring in August 2009, the
Group IV Senior Percentage.

      Group IV Senior Percentage: As of any Distribution Date, the lesser of
100% and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Group IV Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Group IV Mortgage Loans or related REO
Properties immediately prior to such Distribution Date.

      Group IV Senior Principal Distribution Amount: As to any Distribution
Date, the lesser of (a) the balance of the Group IV Available Funds remaining
after the distribution of all amounts required to be distributed pursuant to
Section 6.01(D) and (b) the sum of the following:

                  (A) the Group IV Senior Percentage for such Distribution Date
      times the sum of the following:

                                      -28-
<PAGE>

                        (1) the principal portion of each Monthly Payment due
            during the related Due Period on each Outstanding Mortgage Loan in
            Loan Group IV, whether or not received on or prior to the related
            Determination Date, minus the principal portion of any Debt Service
            Reduction;

                        (2) the Stated Principal Balance of any Group IV
            Mortgage Loan repurchased during the related Prepayment Period
            pursuant to Section 2.02 or 2.03 hereof or the related Servicing
            Agreement; and

                        (3) the principal portion of all other unscheduled
            collections, including Subsequent Recoveries (other than Principal
            Prepayments in Full and Curtailments and amounts received in
            connection with the liquidation or disposition of a Group IV
            Mortgage Loan, including without limitation Insurance Proceeds,
            Liquidation Proceeds and REO Proceeds) received during the related
            Prepayment Period to the extent applied by the related Servicer as
            recoveries of principal of the related Mortgage Loan pursuant to
            related Servicing Agreement;

                  (B) with respect to the liquidation or other disposition of a
      Group IV Mortgage Loan which occurred during the related Prepayment Period
      and did not result in any Extraordinary Losses, an amount equal to the
      lesser of (a) the Group IV Senior Percentage for such Distribution Date
      times the Stated Principal Balance of such Group IV Mortgage Loan and (b)
      the Group IV Senior Accelerated Distribution Percentage for such
      Distribution Date times the related unscheduled collections (including
      without limitation Insurance Proceeds, Liquidation Proceeds and REO
      Proceeds) to the extent applied by the related Servicer or the Master
      Servicer as recoveries of principal of the related Mortgage Loan pursuant
      to the related Servicing Agreement or this Agreement;

                  (C) the Group IV Senior Accelerated Distribution Percentage
      for such Distribution Date times the aggregate of all Principal
      Prepayments in Full and Curtailments received in the related Prepayment
      Period with respect to the Group IV Mortgage Loans; and

                  (D) any amounts described in clauses (A), (B) or (C) of this
      definition, as determined for any previous Distribution Date, which remain
      unpaid after application of amounts previously distributed pursuant to
      this clause (D) to the extent that such amounts are not attributable to
      Realized Losses which have been allocated to the Class M Certificates or
      Class B Certificates.

      Group IV Subordinate Amount: On any date of determination, the excess of
the aggregate Stated Principal Balance of the Group IV Mortgage Loans as of such
date over the aggregate Class Certificate Balances of the Group IV Certificates
then outstanding.

      Group V Available Funds: With respect to any Distribution Date and the
Group V Mortgage Loans, an amount equal to the excess of (i) the sum of (a) the
aggregate of the related Monthly Payments received on or prior to the related
Determination Date, (b) Liquidation Proceeds, Insurance Proceeds, Principal
Prepayments, Subsequent Recoveries and other unscheduled recoveries of principal
and interest in respect of the Group V Mortgage Loans

                                      -29-
<PAGE>

during the related Prepayment Period, (c) the aggregate of any amounts received
in respect of a related REO Property withdrawn from any Protected Account and
deposited in the Master Servicer Collection Account for such Distribution Date,
(d) the aggregate of any amounts deposited in the Master Servicer Collection
Account by the related Servicer or the Master Servicer in respect of related
Prepayment Interest Shortfalls for such Distribution Date and (e) the aggregate
of any related Monthly Advances made by the related Servicer or the Master
Servicer for such Distribution Date, over (ii) the sum of (a) related amounts
reimbursable or payable to the related Servicer or the Master Servicer pursuant
to Sections 4.03 and 4.05, (b) related amounts deposited in the Master Servicer
Collection Account or the Distribution Account, as the case may be, in error and
(c) any Extraordinary Trust Fund Expenses.

      Group V Certificates: The Class V-A Certificates.

      Group V Mortgage Loans: The Mortgage Loans identified as such on the
Mortgage Loan Schedule.

      Group V Senior Accelerated Distribution Percentage: With respect to any
Distribution Date, the percentage indicated below:

<TABLE>
<CAPTION>
                                             Group V Senior Accelerated
       Distribution Date                      Distribution Percentage
-----------------------------  --------------------------------------------------
<S>                            <C>
August 2006 through July 2013  100%

August 2013 through July 2014  Group V Senior Percentage, plus 70% of the Group V
                               Subordinate Percentage

August 2014 through July 2015  Group V Senior Percentage, plus 60% of the Group V
                               Subordinate Percentage

August 2015 through July 2016  Group V Senior Percentage, plus 40% of the Group V
                               Subordinate Percentage

August 2016 through July 2017  Group V Senior Percentage, plus 20% of the Group V
                               Subordinate Percentage

August 2017 and thereafter     Group V Senior Percentage
</TABLE>

provided, however, (i) that any scheduled reduction to the Group V Senior
Accelerated Distribution Percentage described above shall not occur as of any
Distribution Date unless either (a)(1)(x) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months as a percentage of the aggregate
outstanding Class Certificate Balance of the Class M Certificates and the Class
B Certificates, is less than 50%, or (y) the outstanding principal balance of
Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months, as a percentage of the aggregate
outstanding principal balance of all Mortgage Loans averaged over the last six
months, does not exceed 2% and (2) Realized Losses on the Mortgage Loans to date
for such Distribution Date if occurring during the eighth, ninth, tenth,
eleventh or twelfth year (or any year thereafter) after the Closing Date are
less than 30%, 35%, 40%, 45% or 50%, respectively, of the sum of the Initial
Class Certificate Balances of the Class M Certificates

                                      -30-
<PAGE>

and Class B Certificates or (b) (1) the aggregate outstanding principal balance
of the Mortgage Loans delinquent 60 days or more (including foreclosure and REO
Property) averaged over the last six months, as a percentage of the aggregate
outstanding principal balance of all Mortgage Loans averaged over the last six
months, does not exceed 4% and (2) Realized Losses on the Mortgage Loans on or
prior to such Distribution Date if occurring during the eighth, ninth, tenth,
eleventh or twelfth year (or any year thereafter) after the Closing Date are
less than 10%, 15%, 20%, 25% or 30%, respectively, of the sum of the Initial
Class Certificate Balances of the Class M Certificates and Class B Certificates
and (ii) that for any Distribution Date on which the Group V Senior Percentage
is greater than the Original Group V Senior Percentage, the Group I Senior
Accelerated Distribution Percentage, Group II Senior Accelerated Distribution
Percentage, Group III Senior Accelerated Distribution Percentage, Group IV
Senior Accelerated Distribution Percentage and Group V Senior Accelerated
Distribution Percentage for such Distribution Date shall be 100%.
Notwithstanding the foregoing, upon the reduction of the Class Certificate
Balance of the Group V Certificates to zero, the Group V Senior Accelerated
Distribution Percentage will equal 0%.

      In addition, on any Distribution Date on or after the Distribution Date
occurring in August 2009, if the current weighted average of the Subordinate
Percentages for the Certificates is equal to or greater than two times the
initial weighted average of the Subordinate Percentages for the Certificates,
and (a) the outstanding principal balance of the Mortgage Loans delinquent 60
days or more (including for this purpose any such Mortgage Loans in foreclosure
or bankruptcy and such Mortgage Loans with respect to which the related
Mortgaged Property has been acquired by the Trust), averaged over the last six
months, as a percentage of the Subordinate Percentage for that Distribution Date
times the aggregate Stated Principal Balance of the Mortgage Loans, does not
exceed 50% and (b) cumulative Realized Losses on the Mortgage Loans do not
exceed 20% of the initial Subordinate Percentage times the aggregate Stated
Principal Balance of the Mortgage Loans as of the Cut-off Date, then, in each
case, the Group V Senior Accelerated Distribution Percentage for such
Distribution Date will be equal to, prior to the Distribution Date occurring in
August 2009, the Group V Senior Percentage plus 50% of the Subordinate
Percentage and, on or after the Distribution Date occurring in August 2009, the
Group V Senior Percentage.

      Group V Senior Percentage: As of any Distribution Date, the lesser of 100%
and a fraction, expressed as a percentage, the numerator of which is the
aggregate Class Certificate Balance of the Group V Certificates immediately
prior to such Distribution Date and the denominator of which is the aggregate
Stated Principal Balance of all of the Group V Mortgage Loans or related REO
Properties immediately prior to such Distribution Date.

      Group V Senior Principal Distribution Amount: As to any Distribution Date,
the lesser of (a) the balance of the Group V Available Funds remaining after the
distribution of all amounts required to be distributed pursuant to Section
6.01(E) and (b) the sum of the following:

                  (A) the Group V Senior Percentage for such Distribution Date
      times the sum of the following:

                        (1) the principal portion of each Monthly Payment due
            during the related Due Period on each Outstanding Mortgage Loan in
            Loan Group V,

                                      -31-
<PAGE>

            whether or not received on or prior to the related Determination
            Date, minus the principal portion of any Debt Service Reduction;

                        (2) the Stated Principal Balance of any Group V Mortgage
            Loan repurchased during the related Prepayment Period pursuant to
            Section 2.02 or 2.03 hereof or the related Servicing Agreement; and

                        (3) the principal portion of all other unscheduled
            collections, including Subsequent Recoveries (other than Principal
            Prepayments in Full and Curtailments and amounts received in
            connection with the liquidation or disposition of a Group V Mortgage
            Loan, including without limitation Insurance Proceeds, Liquidation
            Proceeds and REO Proceeds) received during the related Prepayment
            Period to the extent applied by the related Servicer as recoveries
            of principal of the related Mortgage Loan pursuant to related
            Servicing Agreement;

                  (B) with respect to the liquidation or other disposition of a
      Group V Mortgage Loan which occurred during the related Prepayment Period
      and did not result in any Extraordinary Losses, an amount equal to the
      lesser of (a) the Group V Senior Percentage for such Distribution Date
      times the Stated Principal Balance of such Group V Mortgage Loan and (b)
      the Group V Senior Accelerated Distribution Percentage for such
      Distribution Date times the related unscheduled collections (including
      without limitation Insurance Proceeds, Liquidation Proceeds and REO
      Proceeds) to the extent applied by the related Servicer or the Master
      Servicer as recoveries of principal of the related Mortgage Loan pursuant
      to the related Servicing Agreement or this Agreement;

                  (C) the Group V Senior Accelerated Distribution Percentage for
      such Distribution Date times the aggregate of all Principal Prepayments in
      Full and Curtailments received in the related Prepayment Period with
      respect to the Group V Mortgage Loans; and

                  (D) any amounts described in clauses (A), (B) or (C) of this
      definition, as determined for any previous Distribution Date, which remain
      unpaid after application of amounts previously distributed pursuant to
      this clause (D) to the extent that such amounts are not attributable to
      Realized Losses which have been allocated to the Class M Certificates or
      Class B Certificates.

      Group V Subordinate Amount: On any date of determination, the excess of
the aggregate Stated Principal Balance of the Group V Mortgage Loans as of such
date over the aggregate Class Certificate Balances of the Group V Certificates
then outstanding.

      Highest Priority: As of any date of determination, the Class of
Subordinate Certificates then outstanding with the earliest priority for
payments pursuant to Section 6.01, in the following order: Class M-1, Class M-2,
Class M-3, Class B-1, Class B-2 and Class B-3 Certificates.

      Indemnified Persons: The Trustee, the Master Servicer, the Depositor and
the Securities Administrator and their officers, directors, agents and employees
and, with respect to the Trustee, any separate co-trustee and its officers,
directors, agents and employees.

                                      -32-
<PAGE>

      Independent: When used with respect to any specified Person, any such
Person who (a) is in fact independent of the Depositor, the Master Servicer and
their respective Affiliates, (b) does not have any direct financial interest in
or any material indirect financial interest in the Depositor or the Master
Servicer or any Affiliate thereof, and (c) is not connected with the Depositor
or the Master Servicer or any Affiliate thereof as an officer, employee,
promoter, underwriter, trustee, partner, director or Person performing similar
functions; provided, however, that a Person shall not fail to be Independent of
the Depositor or the Master Servicer or any Affiliate thereof merely because
such Person is the beneficial owner of 1% or less of any class of securities
issued by the Depositor or the Master Servicer or any Affiliate thereof, as the
case may be.

      Index: The index, if any, specified in a Mortgage Note by reference to
which the related Mortgage Interest Rate will be adjusted from time to time.

      Individual Certificate: Any Private Certificate registered in the name of
the Holder other than the Depository or its nominee.

      Initial Certification: The certification substantially in the form of
Exhibit One to the Custodial Agreement.

      Initial Class Certificate Balance: With respect to any Regular
Certificate, the amount designated "Initial Class Certificate Balance" on the
face thereof.

      Initial Optional Termination Date: The first Distribution Date following
the date on which the aggregate Stated Principal Balance of the Mortgage Loans
is less than 5% of the aggregate Stated Principal Balance of the Mortgage Loans
as of the Cut-off Date.

      Initial Subordinate Class Percentage: With respect to each Class of
Subordinate Certificates, an amount which is equal to the initial aggregate
Class Certificate Balance of such Class of Subordinate Certificates divided by
the aggregate Stated Principal Balance of all the Mortgage Loans as of the
Cut-off Date as follows:

<TABLE>
<S>               <C>
Class M-1: 2.70%  Class B-1: 0.95%

Class M-2: 1.55%  Class B-2: 0.75%

Class M-3: 0.95%  Class B-3: 0.60%
</TABLE>

      Insurance Policy: With respect to any Mortgage Loan, any standard hazard
insurance policy, flood insurance policy or title insurance policy.

      Insurance Proceeds: Amounts paid by the insurer under any Insurance Policy
covering any Mortgage Loan or Mortgaged Property other than amounts required to
be paid over to the Mortgagor pursuant to law or the related Mortgage Note or
Security Instrument and other than amounts used to repair or restore the
Mortgaged Property or to reimburse insured expenses.

      Interest Accrual Period: With respect to each Distribution Date, (a) for
each Class of Certificates (other than the Class I-A Certificates), the calendar
month preceding the month in

                                      -33-
<PAGE>

which such Distribution Date occurs and (b) for the Class I-A Certificates, the
period from and including the preceding Distribution Date, or in the case of the
first Distribution Date, from the Closing Date, through and including the day
prior to the current Distribution Date.

      Interest Adjustment Date: With respect to a Mortgage Loan, the date, if
any, specified in the related Mortgage Note on which the Mortgage Interest Rate
is subject to adjustment.

      Investor Representation Letter: As defined in Section 5.02(b).

      Issuing Entity: Merrill Lynch Mortgage Investors Trust, Series 2006-A4.

      Latest Possible Maturity Date: The Distribution Date in July 2036.

      LIBOR: With respect to each Interest Accrual Period, the rate determined
by the Securities Administrator on the related LIBOR Determination Date on the
basis of the offered rate for one-month United States dollar deposits, as such
rate appears on the Telerate Page 3750, as of 11:00 a.m. (London time) on such
LIBOR Determination Date. If no such quotations are available on an LIBOR
Determination Date, LIBOR for the related Interest Accrual Period will be
established by the Securities Administrator as follows:

            (i) If on such LIBOR Determination Date two or more Reference Banks
      provide quotations as to the rate at which deposits in U.S. Dollars are
      offered as of 11:00 a.m. (London time) to prime banks in the London
      interbank market for a period of one month in amounts approximately equal
      to the aggregate Class Certificate Balance of the Class I-A Certificates,
      LIBOR for the related Interest Accrual Period shall be the arithmetic mean
      of such offered quotations (rounded upwards if necessary to the nearest
      whole multiple of 0.001%);

            (ii) If on such LIBOR Determination Date fewer than two Reference
      Banks provide such offered quotations, LIBOR for the related Interest
      Accrual Period shall be the arithmetic mean of the rates quoted by one or
      more major banks in New York City, selected by the Securities
      Administrator as of 11:00 a.m., New York City time, on such date for loans
      in U.S. Dollars to leading European banks for a period of one month in
      amounts approximately equal to the aggregate Class Certificate Balance of
      the Class I-A Certificates; and

            (iii) If no such quotations can be obtained, LIBOR for the related
      Interest Accrual Period shall be LIBOR for the prior Distribution Date.

      LIBOR Business Day: Any day on which banks in London, England and The City
of New York are open and conducting transactions in foreign currency and
exchange.

      LIBOR Determination Date: With respect to the Class I-A Certificates, (i)
for the first Distribution Date, the second LIBOR Business Day preceding the
Closing Date and (ii) for each subsequent Distribution Date, the second LIBOR
Business Day prior to the immediately preceding Distribution Date.

                                      -34-
<PAGE>

      Liquidated Mortgage Loan: Any defaulted Mortgage Loan (including any REO
Property) as to which the related Servicer has determined that all amounts it
expects to recover from or on account of such Mortgage Loan have been recovered.

      Liquidation Date: With respect to any Liquidated Mortgage Loan, the date
on which the related Servicer has certified that such Mortgage Loan has become a
Liquidated Mortgage Loan.

      Liquidation Expenses: With respect to a Mortgage Loan in liquidation,
unreimbursed expenses paid or incurred by or for the account of the Master
Servicer or the related Servicer in connection with the liquidation of such
Mortgage Loan and the related Mortgaged Property, such expenses including (a)
property protection expenses, (b) property sales expenses, (c) foreclosure and
sale costs, including court costs and reasonable attorneys' fees, and (d)
similar expenses reasonably paid or incurred in connection with liquidation.

      Liquidation Proceeds: With respect to any Mortgage Loan, cash received in
connection with the liquidation of a defaulted Mortgage Loan, whether through
trustee's sale, foreclosure sale or otherwise, and amounts received through
Insurance Proceeds and condemnation proceeds.

      Loan-to-Value Ratio: With respect to any Mortgage Loan, the fraction,
expressed as a percentage, the numerator of which is the original principal
balance of the related Mortgage Loan and the denominator of which is the
Original Value of the related Mortgaged Property.

      Loan Group: Loan Group I, Loan Group II, Loan Group III, Loan Group IV or
Loan Group V, as applicable.

      Loan Group I: The group of Mortgage Loans designated as belonging to Loan
Group I on the Mortgage Loan Schedule.

      Loan Group I Net WAC: The weighted average of the Net Mortgage Rates on
the Group I Mortgage Loans weighted on the basis of the respective Stated
Principal Balance of each such Mortgage Loan as of the beginning of the Due
Period immediately preceding such Distribution Date.

      Loan Group II: The group of Mortgage Loans designated as belonging to Loan
Group II on the Mortgage Loan Schedule.

      Loan Group II Net WAC: The weighted average of the Net Mortgage Rates on
the Group II Mortgage Loans weighted on the basis of the respective Stated
Principal Balance of each such Mortgage Loan as of the beginning of the Due
Period immediately preceding such Distribution Date.

      Loan Group III: The group of Mortgage Loans designated as belonging to
Loan Group III on the Mortgage Loan Schedule.

      Loan Group III Net WAC: The weighted average of the Net Mortgage Rates on
the Group III Mortgage Loans weighted on the basis of the respective Stated
Principal Balance of

                                      -35-
<PAGE>

each such Mortgage Loan as of the beginning of the Due Period immediately
preceding such Distribution Date.

      Loan Group IV: The group of Mortgage Loans designated as belonging to Loan
Group IV on the Mortgage Loan Schedule.

      Loan Group IV Net WAC: The weighted average of the Net Mortgage Rates on
the Group IV Mortgage Loans weighted on the basis of the respective Stated
Principal Balance of each such Mortgage Loan as of the beginning of the Due
Period immediately preceding such Distribution Date.

      Loan Group V: The group of Mortgage Loans designated as belonging to Loan
Group V on the Mortgage Loan Schedule.

      Loan Group V Net WAC: The weighted average of the Net Mortgage Rates on
the Group V Mortgage Loans weighted on the basis of the respective Stated
Principal Balance of each such Mortgage Loan as of the beginning of the Due
Period immediately preceding such Distribution Date.

      Lower Priority: As of any date of determination and with respect to any
Class of Subordinate Certificates, any other Class of Subordinate Certificates
then outstanding with a later priority for payments pursuant to Section 6.01.

      Lower Tier Regular Interests: Any of the REMIC 1 Regular Interests or the
REMIC 2 Regular Interests.

      Lower Tier REMIC Interests: Any of the REMIC 1 Interests or the REMIC 2
Interests.

      Lowest Priority: As of any date of determination, the Class of Subordinate
Certificates then outstanding with the latest priority for payments pursuant to
Section 6.01, in the following order: Class B-3, Class B-2, Class B-1, Class
M-3, Class M-2 and Class M-1 Certificates.

      Lost Notes: The original Mortgage Notes that have been lost, as indicated
on the Mortgage Loan Schedule.

      LPMI Rate: Any mortgage insurance premium payable monthly at a per annum
rate on the Outstanding Principal Balance of the related Mortgage Loan.

      Majority Certificateholders: The Holders of Certificates evidencing at
least 51% of the Voting Rights.

      Master Servicer: Wells Fargo Bank, N.A. including any successors in
interest who meet the qualifications of the Servicing Agreements and this
Agreement, and any successor master servicer appointed hereunder.

      Master Servicer Collection Account: The trust account or accounts created
and maintained pursuant to Section 4.02, which shall be denominated "Wells Fargo
Bank, National Association as Master Servicer for HSBC Bank USA, National
Association, as Trustee f/b/o

                                      -36-
<PAGE>

holders of Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through
Certificates, MLMI Series 2006-A4 - Master Servicer Collection Account." The
Master Servicer Collection Account shall be an Eligible Account.

      Master Servicing Compensation: The meaning specified in Section 3.14.

      Maximum Lifetime Mortgage Rate: The maximum level to which a Mortgage
Interest Rate can adjust in accordance with its terms, regardless of changes in
the applicable Index.

      Minimum Lifetime Mortgage Rate: The minimum level to which a Mortgage
Interest Rate can adjust in accordance with its terms, regardless of changes in
the applicable Index.

      MLBUSA: Merrill Lynch Bank, USA.

      MLML: Merrill Lynch Mortgage Lending, Inc., a Delaware corporation, or any
successor in interest.

      Monthly Advance: An advance of principal or interest required to be made
by the applicable Servicer pursuant to the related Servicing Agreement or the
Master Servicer pursuant to Section 6.05.

      Monthly Payment: With respect to any Mortgage Loan, the scheduled monthly
payment of principal and interest on such Mortgage Loan which is payable by the
related Mortgagor from time to time under the related Mortgage Note, determined:
(a) after giving effect to (i) any Deficient Valuation and/or Debt Service
Reduction with respect to such Mortgage Loan and (ii) any reduction in the
amount of interest collectible from the related Mortgagor pursuant to the Relief
Act; (b) without giving effect to any extension granted or agreed to by the
related Servicer pursuant to related Servicing Agreement; and (c) on the
assumption that all other amounts, if any, due under such Mortgage Loan are paid
when due.

      Monthly Principal: The principal portion of any Monthly Payment.

      Monthly Statement: The statement distributed to Certificateholders
pursuant to Section 6.04.

      Moody's: Moody's Investors Service, Inc. or its successor in interest.

      Mortgage: The mortgage, deed of trust or other instrument creating a first
lien on, or first priority security interest in, a Mortgaged Property securing a
Mortgage Note.

      Mortgage File: The mortgage documents listed in Section 2.01(b) pertaining
to a particular Mortgage Loan and any additional documents required to be added
to the Mortgage File pursuant to this Agreement.

      Mortgage Interest Rate: The annual rate at which interest accrues from
time to time on any Mortgage Loan pursuant to the related Mortgage Note, which
rate is equal to the "Mortgage Interest Rate" set forth with respect thereto on
the Mortgage Loan Schedule.

                                      -37-
<PAGE>

      Mortgage Loan: A mortgage loan transferred and assigned to the Trustee
pursuant to Section 2.01 or Section 2.04 and held as a part of the Trust Fund,
as identified in the Mortgage Loan Schedule, including a mortgage loan the
property securing which has become an REO Property.

      Mortgage Loan Purchase Agreement: The Mortgage Loan Purchase Agreement
dated as of July 28, 2006, between the Seller and the Depositor, as purchaser,
and all amendments thereof and supplements thereto, attached hereto as Exhibit
J.

      Mortgage Loan Schedule: The schedule, attached hereto as Exhibit B with
respect to the Mortgage Loans and as amended from time to time to reflect the
repurchase or substitution of Mortgage Loans pursuant to this Agreement.

      Mortgage Note: The originally executed note or other evidence of the
indebtedness of a Mortgagor under the related Mortgage Loan.

      Mortgage Pool: The pool of Mortgage Loans, identified on Exhibit B from
time to time, and any REO Properties acquired in respect thereof.

      Mortgaged Property: Land and improvements securing the indebtedness of a
Mortgagor under the related Mortgage Loan or, in the case of REO Property, such
REO Property.

      Mortgagor: The obligor on a Mortgage Note.

      National City: National City Mortgage Co., or any successor thereto.

      National City Assignment Agreement: The Assignment, Assumption and
Recognition Agreement, dated as of July 1, 2006, among National City, the
Depositor and the Seller pursuant to which the National City Servicing Agreement
and the rights of the Seller thereunder (other than the rights to enforce the
representations and warranties with respect to the National City Loans) were
assigned to the Depositor for the benefit of the Certificateholders.

      National City Loans: The Mortgage Loans serviced by National City pursuant
to the National City Servicing Agreement.

      National City Servicing Agreement: The Mortgage Servicing Purchase and
Sale Agreement dated as of May 1, 2004, between Merrill Lynch Bank, USA and
National City, as amended by Amendment Number One, dated as of March 22, 2006
(as amended and in effect at any time).

      Net Liquidation Proceeds: As to any Liquidated Mortgage Loan, Liquidation
Proceeds net of (i) Liquidation Expenses which are payable therefrom by the
related Servicer or the Master Servicer in accordance with the related Servicing
Agreement or this Agreement and (ii) unreimbursed advances by the related
Servicer or the Master Servicer and Monthly Advances.

      Net Mortgage Rate: With respect to each Mortgage Loan, the Mortgage
Interest Rate in effect from time to time less the Servicing Fee Rate (expressed
as a per annum rate) and any related LPMI Rate.

                                      -38-
<PAGE>

      Net WAC: The weighted average of the Net Mortgage Rates on the Mortgage
Loans weighted on the basis of the respective Stated Principal Balance of each
such Mortgage Loan as of the beginning of the Due Period immediately preceding
such Distribution Date.

      Nonrecoverable Advance: With respect to any Mortgage Loan any advance or
Monthly Advance (i) which was previously made or is proposed to be made by the
applicable Servicer, or the Master Servicer as successor Servicer, or the
Trustee as successor Master Servicer and (ii) which, in the good faith judgment
of the Master Servicer, the Trustee or applicable Servicer, will not or, in the
case of a proposed advance or Monthly Advance, would not, be ultimately
recoverable by the Master Servicer, the Trustee (as successor Master Servicer)
or applicable Servicer from Liquidation Proceeds, Insurance Proceeds or future
payments on the Mortgage Loan for which such advance or Monthly Advance was
made.

      Notional Amount: With respect to the Class X-A Certificates, an amount
equal to the Original Class X-A Notional Amount reduced (or increased) by an
amount equal to the reduction (or increase) of the Class Certificate Balance of
the Class I-A Certificates.

      Offered Certificate: Any Senior Certificate or Offered Subordinate
Certificate.

      Offered Subordinate Certificates: The Class M-l, Class M-2 and Class M-3
Certificates.

      Officer's Certificate: A certificate signed by the Chairman of the Board,
the Vice Chairman of the Board, the President or a Vice President or Assistant
Vice President or other authorized officer of the Master Servicer or the
Depositor, as applicable, and delivered to the Trustee, as required by this
Agreement.

      Opinion of Counsel: A written opinion of counsel who is or are acceptable
to the Trustee and who, unless required to be Independent (an "Opinion of
Independent Counsel"), may be internal counsel for the Master Servicer or the
Depositor.

      Optional Termination: The termination of the Trust Fund hereunder pursuant
to Section 10.01(a) hereof.

      Optional Termination Amount: The amount received by the Securities
Administrator in connection with any purchase of all of the Mortgage Loans and
REO Properties pursuant to Section 10.01(b) hereof.

      Optional Termination Price: On any date after the Initial Optional
Termination Date, an amount equal to the sum of (A) the aggregate Stated
Principal Balance of each Mortgage Loan (other than any Mortgage Loan that has
become an REO Property) as of the Distribution Date on which the proceeds of the
Optional Termination are distributed to the Certificateholders, plus accrued
interest thereon at the applicable Mortgage Rate as of the Due Date preceding
the Distribution Date on which the proceeds of the Optional Termination are
distributed to Certificateholders and the fair market value of any REO Property,
plus accrued interest thereon as of the Distribution Date on which the proceeds
of the Optional Termination are distributed to Certificateholders, (B) any
unreimbursed out-of-pocket costs and expenses owed to the Master Servicer, the
Trustee or the Securities Administrator (including any amounts incurred by the
Securities Administrator in connection with conducting the Auction), a Servicer
or the Master

                                      -39-
<PAGE>

Servicer and any unpaid or unreimbursed Servicing Fees, Monthly Advances and
Servicing Advances, (C) any unreimbursed costs, penalties and/or damages
incurred by the Trust Fund in connection with any violation relating to any of
the Mortgage Loans of any predatory or abusive lending law and (D) in the event
an Auction has been conducted, all reasonable fees and expenses incurred by the
Securities Administrator to conduct the Auction.

      Original Class X-A Notional Amount: The Class Certificate Balance of the
Class I-A Certificates on the Closing Date, as set forth opposite such Class in
the Preliminary Statement.

      Original Subordinate Principal Balance: The sum of the aggregate Class
Certificate Balances of each Class of Subordinate Certificates as of the Closing
Date.

      Original Value: The lesser of (i) the Appraised Value or (ii) the sales
price of a Mortgaged Property at the time of origination of a Mortgage Loan,
except in instances where either clauses (i) or (ii) is unavailable, the other
may be used to determine the Original Value, or if both clauses (i) and (ii) are
unavailable, Original Value may be determined from other sources reasonably
acceptable to the Depositor.

      Outstanding Mortgage Loan: With respect to any Due Date, a Mortgage Loan
which, prior to such Due Date, was not the subject of a Principal Prepayment in
Full, did not become a Liquidated Mortgage Loan and was not purchased or
replaced.

      Outstanding Principal Balance: As of the time of any determination, the
principal balance of a Mortgage Loan remaining to be paid by the Mortgagor, or,
in the case of an REO Property, the principal balance of the related Mortgage
Loan remaining to be paid by the Mortgagor at the time such property was
acquired by the Trust Fund less any Net Liquidation Proceeds with respect
thereto to the extent applied to principal.

      Ownership Interest: As to any Certificate, any ownership or security
interest in such Certificate, including any interest in such Certificate as the
Holder thereof and any other interest therein, whether direct or indirect, legal
or beneficial, as owner or as pledgee.

      Pass-Through Rate: With respect to the Certificates and any Distribution
Date, the following:

                  (i) For the Class I-A Certificates on each Distribution Date,
            a per annum rate equal to the least of (i) LIBOR as of the related
            LIBOR Determination Date plus the Class I-A Pass-Through Margin,
            (ii) the Group I Net WAC Cap and (iii) the Group I Maximum Rate Cap.

                  (ii) For the Class II-A Certificates on each Distribution
            Date, a per annum rate equal to the Loan Group II Net WAC for such
            Distribution Date.

                  (iii) For the Class III-A-1 Certificates and the Class III-A-2
            Certificates on each Distribution Date, a per annum rate equal to
            the Loan Group III Net WAC for such Distribution Date.

                                      -40-
<PAGE>

                  (iv) For the Class IV-A-1 Certificates and the Class IV-A-2
            Certificates on each Distribution Date, a per annum rate equal to
            the Loan Group IV Net WAC for such Distribution Date.

                  (v) For the Class V-A Certificates on each Distribution Date,
            a per annum rate equal to the Loan Group V Net WAC for such
            Distribution Date.

                  (vi) For the Class X-A Certificates on each Distribution Date,
            a per annum rate equal to the product of (A) the Group I Net WAC Cap
            for such Distribution Date minus the Pass-Through Rate for the Class
            I-A Certificates for such Distribution Date and (B) a fraction, the
            numerator of which is the actual number of days in the related
            Interest Accrual Period for the Class I-A Certificates and the
            denominator of which is 30.

                  (vii) For the Class A-R Certificates on each Distribution
            Date, a per annum rate equal to the Loan Group I Net WAC for such
            Distribution Date.

                  (viii) For each class of Class M Certificates and Class B
            Certificates on each Distribution Date a per annum rate equal to the
            Subordinate Net WAC.

                  (ix) The Class P Certificates do not have a Pass-Through Rate.

      Paying Agent: The Securities Administrator or any successor Paying Agent
appointed by the Securities Administrator.

      Percentage Interest: With respect to any Certificate (other than the Class
A-R and Class P Certificates), a fraction, expressed as a percentage, the
numerator of which is the Initial Class Certificate Balance (or Notional Amount
in the case of the Class X-A Certificates) represented by such Certificate and
the denominator of which is the Initial Class Certificate Balance (or Notional
Amount in the case of the Class X-A Certificates) of the related Class. With
respect to the Class A-R and Class P Certificates, the Percentage Interest
evidenced thereby shall be as specified on the face thereof, or otherwise, be
equal to 100%.

      Periodic Rate Cap: With respect to each Mortgage Loan, the maximum
adjustment that can be made to the Mortgage Interest Rate on each Interest
Adjustment Date in accordance with its terms, regardless of changes in the
applicable Index.

      Permitted Investments: Any one or more of the following obligations or
securities held in the name of the Trustee for the benefit of the
Certificateholders (provided that such obligation or security must be a
"permitted investment" within the meaning of such term as provided for in
Section 860G(a)(5) of the Code):

            (v) direct obligations of, and obligations the timely payment of
      which are fully guaranteed by the United States of America or any agency
      or instrumentality of the United States of America the obligations of
      which are backed by the full faith and credit of the United States of
      America;

                                      -41-
<PAGE>

            (vi) (a) demand or time deposits, federal funds or bankers'
      acceptances issued by any depository institution or trust company
      incorporated under the laws of the United States of America or any state
      thereof (including the Trustee or the Master Servicer or its Affiliates
      acting in its commercial banking capacity) and subject to supervision and
      examination by federal and/or state banking authorities, provided that the
      commercial paper and/or the short-term debt rating and/or the long-term
      unsecured debt obligations of such depository institution or trust company
      at the time of such investment or contractual commitment providing for
      such investment have the Applicable Credit Rating or better from each
      Rating Agency and (b) any other demand or time deposit or certificate of
      deposit that is fully insured by the Federal Deposit Insurance
      Corporation;

            (vii) repurchase obligations with respect to (a) any security
      described in clause (i) above or (b) any other security issued or
      guaranteed by an agency or instrumentality of the United States of
      America, the obligations of which are backed by the full faith and credit
      of the United States of America, in either case entered into with a
      depository institution or trust company (acting as principal) described in
      clause (ii)(a) above where the Trustee holds the security therefor;

            (viii) securities bearing interest or sold at a discount issued by
      any corporation (including the Trustee or the Master Servicer or its
      Affiliates) incorporated under the laws of the United States of America or
      any state thereof that have the Applicable Credit Rating or better from
      each Rating Agency at the time of such investment or contractual
      commitment providing for such investment; provided, however, that
      securities issued by any particular corporation will not be Permitted
      Investments to the extent that investments therein will cause the then
      outstanding principal amount of securities issued by such corporation and
      held as part of the Issuing Entity to exceed 10% of the aggregate
      Outstanding Principal Balances of all the Mortgage Loans and Permitted
      Investments held as part of the Issuing Entity;

            (ix) commercial paper (including both non-interest-bearing discount
      obligations and interest-bearing obligations payable on demand or on a
      specified date not more than one year after the date of issuance thereof)
      having the Applicable Credit Rating or better from each Rating Agency at
      the time of such investment;

            (x) a Reinvestment Agreement issued by any bank, insurance company
      or other corporation or entity;

            (xi) any other demand, money market or time deposit, obligation,
      security or investment as may be acceptable to either Rating Agency as
      evidenced in writing by each Rating Agency to the Trustee or Master
      Servicer;

            (xii) any money market or common trust fund having the Applicable
      Credit Rating or better from each Rating Agency (if such fund is rated by
      each Rating Agency), including any such fund for which the Trustee or
      Master Servicer or any affiliate of the Trustee or Master Servicer acts as
      a manager or an advisor; provided, however, that no instrument or security
      shall be a Permitted Investment if such instrument or security evidences a
      right to receive only interest payments with respect to the obligations

                                      -42-
<PAGE>

      underlying such instrument or if such security provides for payment of
      both principal and interest with a yield to maturity in excess of 120% of
      the yield to maturity at par or if such instrument or security is
      purchased at a price greater than par; and

            (xiii) units of a taxable money-market portfolio having the highest
      rating assigned by each Rating Agency (except if S&P is a Rating Agency,
      "AAAm" or "AAAM-G" by S&P) and restricted to obligations issued or
      guaranteed by the United States of America or entities whose obligations
      are backed by the full faith and credit of the United States of America
      and repurchase agreements collateralized by such obligations.

      Permitted Transferee: Any Person other than a Disqualified Organization or
an "electing large partnership" (as defined by Section 775 of the Code).

      Person: Any individual, corporation, partnership, joint venture,
association, limited liability company, joint-stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

      PHH: PHH Mortgage Corporation, or any successor thereto.

      PHH Assignment Agreement: The Assignment, Assumption and Recognition
Agreement, dated as of July 1, 2006, among PHH Mortgage Corporation, the
Depositor and the Seller pursuant to which the PHH Servicing Agreement and the
rights of the Seller thereunder (other than the rights to enforce the
representations and warranties with respect to the PHH Mortgage Loans) were
assigned to the Depositor for the benefit of the Certificateholders.

      PHH Mortgage Loans: The Mortgage Loans serviced by PHH pursuant to the PHH
Servicing Agreement.

      PHH Servicing Agreement: The Mortgage Loan Flow Purchase, Sale and
Servicing Agreement dated as of March 27, 2001 between Merrill Lynch Mortgage
Capital Inc., Bishop's Gate Residential Mortgage Trust (formerly known as
Cendant Residential Mortgage Trust) and Cendant Mortgage Corporation (as amended
and in effect at any time).

      Physical Certificate: The Residual Certificate.

      Prepayment Assumption: A rate or rates of prepayment, as described in the
Prospectus Supplement related to the Offered Certificates.

      Prepayment Distribution Trigger: With respect to any Distribution Date and
any Class of Subordinate Certificates (other than the Class M-1 Certificates), a
test that shall be satisfied if the fraction (expressed as a percentage) equal
to the sum of the Class Certificate Balances of such Class and each Class of
Subordinate Certificates with a Lower Priority than such Class immediately prior
to such Distribution Date divided by the aggregate Stated Principal Balance of
all of the Mortgage Loans (or related REO Properties) immediately prior to such
Distribution Date is greater than or equal to the sum of the related Initial
Subordinate Class Percentages of such Classes of Subordinate Certificates.

                                      -43-
<PAGE>

      Prepayment Interest Shortfall: As to any Distribution Date and any
Mortgage Loan (other than a Mortgage Loan relating to an REO Property) that was
the subject of (a) a Principal Prepayment in Full during the related Prepayment
Period, an amount equal to the excess of one month's interest at the Net
Mortgage Rate on the Stated Principal Balance of such Mortgage Loan over the
amount of interest (adjusted to the Net Mortgage Rate) paid by the Mortgagor for
such Prepayment Period to the date of such Principal Prepayment in Full or (b) a
Curtailment during the prior calendar month, an amount equal to one month's
interest at the Net Mortgage Rate on the amount of such Curtailment. The
obligations of the Master Servicer in respect of any Prepayment Interest
Shortfall are set forth in Section 6.06.

      Prepayment Penalty: With respect to any Prepayment Period, any prepayment
premium, charge or penalty payable by a Mortgagor in connection with any
Principal Prepayment on the Prepayment Penalty Mortgage Loans.

      Prepayment Penalty Mortgage Loans: Any of the Mortgage Loans originated by
Greenpoint, MortgageIT, and American Mortgage Express that are subject to
existing prepayment premiums.

      Prepayment Period: With respect to any Mortgage Loan and any Distribution
Date, the calendar month preceding the month in which such Distribution Date
occurs.

      Primary Mortgage Insurance Policy: Any primary mortgage guaranty insurance
policy issued in connection with a Mortgage Loan which provides compensation to
a Mortgage Note holder in the event of default by the obligor under such
Mortgage Note or the related Security Instrument, if any or any replacement
policy therefor through the related Interest Accrual Period for such Class
relating to a Distribution Date.

      Principal Prepayment: Any Principal Prepayment in full or Curtailment or
other recovery of principal on a Mortgage Loan which is received in advance of
its scheduled Due Date to the extent that it is not accompanied by an amount as
to interest representing scheduled interest due on any date or dates in any
month or months subsequent to the month of prepayment, including Insurance
Proceeds and Repurchase Proceeds, but excluding the principal portion of Net
Liquidation Proceeds.

      Principal Prepayment in Full: Any Principal Prepayment made by a Mortgagor
of the entire unpaid principal balance of the Mortgage Loan.

      Private Certificates: Any of the Class B-1, Class B-2, Class B-3 and Class
P Certificates.

      Prospectus Supplement: The Prospectus Supplement dated July 26, 2006,
relating to the public offering of the Offered Certificates.

      Protected Account: An account established and maintained for the benefit
of Certificateholders by each Servicer with respect to the related Mortgage
Loans and with respect to REO Property pursuant to the respective Servicing
Agreement. The Protected Account shall be an Eligible Account.

                                      -44-
<PAGE>

      Purchase Price: With respect to any Mortgage Loan or REO Property to be
purchased pursuant to or as contemplated by Section 2.03 or 10.01, and as
confirmed by an Officers' Certificate from the Master Servicer to the Trustee,
an amount equal to the sum of (i) 100% of the Stated Principal Balance thereof
as of the date of purchase (or such other price as provided in Section 10.01),
(ii) accrued interest on such Stated Principal Balance at the applicable
Mortgage Interest Rate in effect from time to time from the Due Date as to which
interest was last covered by a payment by the Mortgagor or an advance by the
related Servicer or Master Servicer, which payment or advance had as of the date
of purchase been distributed to Certificateholders, through the end of the
calendar month in which the purchase is to be effected less any unreimbursed
Monthly Advances and any unpaid Servicing Fees payable to the purchaser of the
Mortgage Loan and (iii) any costs and damages incurred by the Issuing Entity in
connection with any violation by such Mortgage Loan or REO Property of any
predatory or abusive-lending law.

      Qualified Insurer: Any insurance company duly qualified as such under the
laws of the state or states in which the related Mortgaged Property or Mortgaged
Properties is or are located, duly authorized and licensed in such state or
states to transact the type of insurance business in which it is engaged and
approved as an insurer by the Master Servicer, so long as the claims paying
ability of which is acceptable to the Rating Agencies for pass-through
certificates having the same rating as the Certificates rated by the Rating
Agencies as of the Closing Date.

      Rating Agencies: Moody's and S&P.

      Realized Loss: With respect to a Liquidated Mortgage Loan, the amount by
which the remaining unpaid principal balance of the Mortgage Loan exceeds the
amount of Liquidation Proceeds applied to the principal balance of the related
Mortgage Loan. To the extent the Master Servicer receives Subsequent Recoveries
with respect to any Mortgage Loan, the amount of the Realized Loss with respect
to that Mortgage Loan will be reduced to the extent such recoveries are applied
to reduce the Class Certificate Balance of any Class of Certificates on any
Distribution Date.

      Record Date: With respect to each Distribution Date and each class of
Offered Certificates, the close of business on the last Business Day of the
month immediately preceding the month in which the related Distribution Date
occurs.

      Reference Banks: Those banks (i) with an established place of business in
London, England, (ii) not controlling, under the control of or under common
control with the Depositor or the Securities Administrator, (iii) that have been
designated as such by the Securities Administrator and (iv) that are engaged in
transactions in the London interbank market.

      Refinanced Mortgage Loan: Any Mortgage Loan the proceeds of which were not
used to purchase the related Mortgaged Property.

      Regular Certificates: Any of the Class I-A, Class II-A, Class III-A-1,
Class III-A-2, Class IV-A-1, Class IV-A-2, Class V, Class X-A, Class M-1, Class
M-2, Class M-3, Class B-1, Class B-2 or Class B-3 Certificates.

      Regulation AB: Subpart 22.1100 - Asset Backed Securities (Regulation AB),
17 C.F.R. Sections 229.1100-229.1123, as such may be amended from time to time,
and subject to such

                                      -45-
<PAGE>

clarification and interpretation as have been provided by the Commission in the
adopting release (Asset-Backed Securities, Securities Act Release No. 33-8518,
70 Fed Reg. 1,506, 1,531 (Jan. 7, 2005) or by the staff of the Commission, or as
may be provided by the Commission or its staff from time to time.

      Reinvestment Agreements: One or more reinvestment agreements, acceptable
to each of the Rating Agencies, from a bank, insurance company or other
corporation or entity (including the Trustee).

      Relevant Servicing Criteria: The Servicing Criteria applicable to the
various parties, as set forth on Exhibit K hereto. For clarification purposes,
multiple parties can have responsibility for the same Relevant Servicing
Criteria. With respect to a Servicing Function Participant engaged by the Master
Servicer, the Securities Administrator, the Trustee, the Custodian or a
Servicer, the term "Relevant Servicing Criteria" may refer to one or more
discrete functions specified in the Relevant Servicing Criteria applicable to
such parties.

      Relief Act: The Servicemembers Civil Relief Act, as amended.

      Relief Act Mortgage Loan: Any Mortgage Loan as to which the Monthly
Payment thereof has been reduced due to the application of the Relief Act.

      REMIC: Each pool of assets in the Trust Fund designated as a REMIC as
described in the Preliminary Statement.

      REMIC Interests: Any regular or residual interest in any of REMIC 1, REMIC
2 or the Upper Tier REMIC, as described in the Preliminary Statement.

      REMIC Opinion: An Opinion of Counsel to the effect that a contemplated
action will neither adversely affect the status as a REMIC of any REMIC created
hereunder nor subject any such REMIC to any tax under the REMIC Provisions.

      REMIC Provisions: The provisions of the federal income tax law relating to
real estate mortgage investment conduits, which appear at Sections 860A through
860G of Subchapter M of Chapter 1 of the Code, and related provisions, and
regulations, including proposed regulations and rulings, and administrative
pronouncements promulgated thereunder, as the foregoing may be in effect from
time to time.

      REMIC 1: As described in the Preliminary Statement.

      REMIC 1 Interest: Each class of interest in REMIC 1 as described in the
Preliminary Statement.

      REMIC 1 Regular Interest: Each of the REMIC 1 Interests other than the
Class LT1-R Interest.

      REMIC 1 Subordinate Balance Ratio: The ratio among the uncertificated
principal balances of each of the REMIC 1 Interests ending with the designation
"A" that is equal to the ratio among, with respect to each such REMIC 1
Interest, the excess of (x) the aggregate

                                      -46-
<PAGE>
Principal Balance of the Mortgage Loans in the related Loan Group over (y) the
aggregate Class Certificate Balance of the Certificates in the Certificate Group
related to such Loan Group.

      REMIC 2: As described in the Preliminary Statement.

      REMIC 2 Interest: Each class of interest in REMIC 2 as described in the
Preliminary Statement.

      REMIC 2 Regular Interest: Each of the REMIC 2 Interests other than the
Class LT2-R Interest.

      REO Property: A Mortgaged Property acquired by the Servicer or Master
Servicer on behalf of the Trust Fund through foreclosure or deed-in-lieu of
foreclosure, as described in Section 3.15 in connection with a defaulted
Mortgage Loan.

      Reportable Event: As defined in Section 3.18(a).

      Reporting Servicer: As defined in Section 3.18(h).

      Repurchase Proceeds: The Repurchase Price in connection with any
repurchase of a Mortgage Loan by the Seller and any cash deposit in connection
with the substitution of a Mortgage Loan.

      Request for Release: A request for release in the form attached hereto as
Exhibit D.

      Required Insurance Policy: With respect to any Mortgage Loan, any
insurance policy which is required to be maintained from time to time under this
Agreement with respect to such Mortgage Loan.

      Reserve Account: The separate Eligible Account created and maintained by
the Securities Administrator pursuant to Section 4.06 in the name of the Trustee
for the benefit of the Trust Fund and designated "Wells Fargo Bank, N.A., as
securities administrator, in trust for registered holders of the Merrill Lynch
Mortgage Investors, Inc., Mortgage Pass-Through Certificates, Series 2006-A4."
Funds in the Reserve Account shall be held in trust for the Trust Fund for the
uses and purposes set forth in this Agreement.

      Residual Certificate: The Class A-R Certificate.

      Residual Interest: The Residual Certificate, other than the portion
thereof representing the right to payments in respect of the Class LT1-R
Interest and Class LT2-R Interest..

      Responsible Officer: Any officer assigned to the Corporate Trust Office
(or any successor thereto), including any Vice President, Assistant Vice
President, Trust Officer, any Assistant Secretary, any trust officer or any
other officer of the Trustee or Securities Administrator customarily performing
functions similar to those performed by any of the above designated officers and
having direct responsibility for the administration of this Agreement, and any
other officer of the Trustee or Securities Administrator to whom a matter
arising hereunder may be referred because of such officers familiarity with the
subject matter thereof.

                                      -47-
<PAGE>

      Rule 144A Letter: The certificate to be furnished by each purchaser of a
Private Certificate (which is also a Physical Certificate) which is a Qualified
Institutional Buyer as defined under Rule 144A promulgated under the Securities
Act, substantially in the form set forth as Exhibit F-3 hereto.

      Sarbanes-Oxley Act: The Sarbanes-Oxley Act of 2002 and the rules and
regulations of the Commission promulgated thereunder (including any
interpretations thereof by the Commission's staff).

      Sarbanes-Oxley Certification: A written certification signed by an officer
of the Master Servicer that complies with (i) the Sarbanes-Oxley Act, and (ii)
Exchange Act Rules 13a-14(d) and 15d-14(d), as in effect from time to time;
provided that if, after the Closing Date (a) the Sarbanes-Oxley Act is amended,
(b) the Rules referred to in clause (ii) are modified or superseded by any
subsequent statement, rule or regulation of the Commission or any statement of a
division thereof, or (c) any future releases, rules and regulations are
published by the Commission from time to time pursuant to the Sarbanes-Oxley
Act, which in any such case affects the form or substance of the required
certification and results in the required certification being, in the reasonable
judgment of the Master Servicer, materially more onerous that then form of the
required certification as of the Closing Date, the Sarbanes-Oxley Certification
shall be as agreed to by the Master Servicer and the Depositor following a
negotiation in good faith to determine how to comply with any such new
requirements.

      S&P: Standard and Poor's, a division of The McGraw-Hill Companies, Inc. or
its successor in interest.

      Scheduled Payment: With respect to any Mortgage Loan and any month, the
scheduled payment or payments of principal and interest due during such month on
such Mortgage Loan which either is payable by a Mortgagor in such month under
the related Mortgage Note or, in the case of REO Property, would otherwise have
been payable under the related Mortgage Note.

      Scheduled Principal: The principal portion of any Scheduled Payment.

      Securities Act: The Securities Act of 1933, as amended.

      Securities Administrator: Wells Fargo Bank, N.A., or any successor in
interest, or any successor securities administrator appointed as herein
provided.

      Security Agreement: With respect to a Cooperative Loan, the agreement
creating a security interest in favor of the originator in the related
Cooperative Stock.

      Security Instrument: A written instrument creating a valid first lien on a
Mortgaged Property securing a Mortgage Note, which may be any applicable form of
mortgage, deed of trust, deed to secure debt or security deed, including any
riders or addenda thereto.

      Seller: Merrill Lynch Mortgage Lending, Inc., a Delaware corporation, or
any successor in interest.

                                      -48-
<PAGE>

      Senior Accelerated Distribution Percentage: The Group I, Group II, Group
III, Group IV or Group V Senior Accelerated Distribution Percentage, as
applicable.

      Senior Certificates: The Class I-A Certificates, Class II-A Certificates,
Class III-A-1 Certificates, Class III-A-2 Certificates, Class IV-A-1
Certificates, Class IV-A-2 Certificates, Class V-A Certificates, Class X-A
Certificates and Class A-R Certificates.

      Senior Percentage: The Group I Senior Percentage, Group II Senior
Percentage, Group III Senior Percentage, Group IV Senior Percentage or Group V
Senior Percentage, as applicable.

      Senior Principal Distribution Amount: The Group I Senior Principal
Distribution Amount, Group II Senior Principal Distribution Amount, Group III
Senior Principal Distribution Amount, Group IV Senior Principal Distribution
Amount or Group V Senior Principal Distribution Amount, as applicable.

      Servicer: With respect to each Mortgage Loan, GreenPoint, National City,
CitiMortgage, PHH, Wells Fargo or Countrywide, as applicable and as specified on
the Mortgage Loan Schedule.

      Servicer Remittance Date: With respect to each Mortgage Loan, the date set
forth in the related Servicing Agreement.

      Servicing Advances: With respect to any Mortgage Loan, all customary,
reasonable and necessary "out-of-pocket" costs and expenses incurred by the
Servicer in the performance of its servicing obligations, including, but not
limited to, the cost of (i) preservation, restoration, protection and repair of
a Mortgaged Property or Cooperative Unit, as applicable, (ii) any enforcement or
judicial proceedings with respect to a Mortgage Loan, including foreclosure
actions and (iii) the management and liquidation of REO Property.

      Servicing Agreements: The GreenPoint Servicing Agreement, National City
Servicing Agreement, CitiMortgage Servicing Agreement, PHH Servicing Agreement,
Wells Fargo Servicing Agreement and Countrywide Servicing Agreement.

      Servicing Criteria: The "servicing criteria" set forth in Item 1122(d) of
Regulation AB, as such may be amended from time to time.

      Servicing Fee: As to any Mortgage Loan and Distribution Date, an amount
equal to the product of (i) the Stated Principal Balance of such Mortgage Loan
as of the Due Date in the preceding calendar month and (ii) the applicable
Servicing Fee Rate. Such fee shall be payable monthly, computed on the basis of
the same principal amount and period respectively which any related interest
payment on a Mortgage Loan is computed. If the Index and/or Gross Margin are
adjusted as provided in the related Mortgage Note, the Servicing Fee shall be
the rate per annum in effect immediately prior to such adjustment.

      Servicing Fee Rate: As to any Mortgage Loan, a per annum rate as set forth
in the Mortgage Loan Schedule.

                                      -49-
<PAGE>

      Servicing Function Participant: Any Sub-Servicer, Subcontractor or any
other Person, other than a Servicer, the Custodian, the Master Servicer, the
Paying Agent, the Securities Administrator and the Trustee, that is
participating in the servicing function within the meaning of Regulation AB.

      Servicing Officer: Any officer of the Master Servicer involved in, or
responsible for, the administration and servicing of the Mortgage Loans whose
names and specimen signatures appear on a list of servicing officers furnished
to the Trustee by the Master Servicer, as such list may be amended from time to
time.

      Startup Day: The Closing Date.

      Stated Principal Balance: With respect to any Mortgage Loan and Due Date,
the unpaid principal balance of such Mortgage Loan as of such Due Date, as
specified in the amortization schedule at the time relating thereto (before any
adjustment to such amortization schedule by reason of any moratorium or similar
waiver or grace period), after giving effect to any previous partial prepayments
and Liquidation Proceeds received and to the payment of principal due on such
Due date and irrespective of any delinquency in payment by the related
Mortgagor.

      Subcontractor: Any vendor, subcontractor or other Person that is not
responsible for the overall servicing of Mortgage Loans but performs one or more
discrete functions identified in Item 1122(d) of Regulation AB with respect to
Mortgage Loans under the direction or authority of any Servicer (or a
Sub-Servicer of any Servicer), the Master Servicer, the Trustee, the Custodian
or the Securities Administrator.

      Subordinate Certificates: The Class M-1, Class M-2, Class M-3, Class B-1,
Class B-2 and Class B-3 Certificates.

      Subordinate Net WAC: For any Distribution Date, a per annum rate equal to
the weighted average of the Loan Group I Net WAC, the Loan Group II Net WAC, the
Loan Group III Net WAC, the Loan Group IV Net WAC and the Loan Group V Net WAC,
weighted in proportion to the results of subtracting from the aggregate Stated
Principal Balance of the Mortgage Loans of each Loan Group as of the beginning
of the Due Period immediately preceding such Distribution Date, the aggregate
Class Certificate Balance of the Senior Certificates related to each such Loan
Group.

      Subordinate Percentage: For any Distribution Date, the difference between
100% and the Senior Percentage for such date.

      Subordinate Prepayment Percentage: With respect to any Distribution Date
and each Class of Subordinate Certificates, under the applicable circumstances
set forth below, the respective percentages set forth below:

            (i) For any Distribution Date prior to the Distribution Date in
      August 2013 (unless the Class Certificate Balances of the Senior
      Certificates have been reduced to zero), 0%.

                                      -50-
<PAGE>

            (ii) For any Distribution Date for which clause (i) does not apply,
      and on which any Class of Subordinate Certificates are outstanding:

                  (a) in the case of the Class of Subordinate Certificates then
            outstanding with the Highest Priority and each other Class of
            Subordinate Certificates for which the related Prepayment
            Distribution Trigger has been satisfied, a fraction, expressed as a
            percentage, the numerator of which is the Class Certificate Balance
            of such Class immediately prior to such date and the denominator of
            which is the sum of the Class Certificate Balances immediately prior
            to such date of (1) the Class of Subordinate Certificates then
            outstanding with the Highest Priority and (2) all other Classes of
            Subordinate Certificates for which the respective Prepayment
            Distribution Triggers have been satisfied; and

                  (b) in the case of each other Class of Subordinate
            Certificates for which the Prepayment Distribution Triggers have not
            been satisfied, 0%; and

            (iii) Notwithstanding the foregoing, if the application of the
      foregoing percentages on any Distribution Date as provided in Section 6.01
      of this Agreement (determined without regard to the proviso in the
      definition of "Subordinate Principal Distribution Amount") would result in
      a distribution in respect of principal of any Class or Classes of
      Subordinate Certificates in an amount greater than the remaining Class
      Certificate Balance thereof (any such class, a "Maturing Class"), then:
      (a) the Subordinate Prepayment Percentage of each Maturing Class shall be
      reduced to a level that, when applied as described above, would exactly
      reduce the Class Certificate Balance of such Class to zero; (b) the
      Subordinate Prepayment Percentage of each other Class of Subordinate
      Certificates (any such Class, a "Non-Maturing Class") shall be
      recalculated in accordance with the provisions in paragraph (ii) above, as
      if the Class Certificate Balance of each Maturing Class had been reduced
      to zero (such percentage as recalculated, the "Recalculated Percentage");
      (c) the total amount of the reductions in the Subordinate Prepayment
      Percentages of the Maturing Class or Classes pursuant to clause (a) of
      this sentence, expressed as an aggregate percentage, shall be allocated
      among the Non-Maturing Classes in proportion to their respective
      Recalculated Percentages (the portion of such aggregate reduction so
      allocated to any Non-Maturing Class, the "Adjustment Percentage"); and (d)
      for purposes of such Distribution Date, the Subordinate Prepayment
      Percentage of each Non-Maturing Class shall be equal to the sum of (1) the
      Subordinate Prepayment Percentage thereof, calculated in accordance with
      the provisions in paragraph (ii) above as if the Class Certificate Balance
      of each Maturing Class had not been reduced to zero, plus (2) the related
      Adjustment Percentage.

      Subordinate Principal Distribution Amount: With respect to any
Distribution Date and each Class of Class M Certificates and Class B
Certificates, the sum of the following:

            (i) the product of (x) the related Class M Percentage or Class B
      Percentage for such Class and (y) the aggregate of the following amounts:

                  (1) the principal portion of each Monthly Payment due during
            the related Due Period on each Outstanding Mortgage Loan, whether or
            not

                                      -51-
<PAGE>

            received on or prior to the related Determination Date, minus the
            principal portion of any Debt Service Reduction;

                  (2) the Stated Principal Balance of any Mortgage Loan
            repurchased during the related Prepayment Period pursuant to Section
            2.02 or 2.03; and

                  (3) the principal portion of all other unscheduled collections
            (other than Principal Prepayments in Full and Curtailments and
            amounts received in connection with the liquidation or other
            disposition of a Mortgage Loan, including without limitation
            Insurance Proceeds, Liquidation Proceeds and REO Proceeds) received
            during the related Prepayment Period to the extent applied by the
            related Servicer as recoveries of principal of the related Mortgage
            Loan pursuant to the related Servicing Agreement;

            (ii) such Class's pro rata share, based on the Class Certificate
      Balance of each Class of Class M Certificates and Class B Certificates
      then outstanding, of, with respect to each Mortgage Loan for which a
      liquidation or other disposition occurred during the related Prepayment
      Period and did not result in any Extraordinary Losses, an amount equal to
      the related unscheduled collections (including without limitation
      Insurance Proceeds, Liquidation Proceeds and REO Proceeds) to the extent
      applied by the related Servicer as recoveries of principal of the related
      Mortgage Loan pursuant to the related Servicing Agreement, to the extent
      such collections are not otherwise distributed to the Senior Certificates;

            (iii) the product of (x) the related Subordinate Prepayment
      Percentage for such Distribution Date and (y) the aggregate of all
      Principal Prepayments in Full and Curtailments of the Mortgage Loans
      received in the related Prepayment Period, to the extent not payable to
      the Senior Certificates; and

            (iv) any amounts described in clauses (i), (ii) and (iii) as
      determined for any previous Distribution Date, that remain undistributed
      to the extent that such amounts are not attributable to Realized Losses
      which have been allocated to a Class of Subordinate Certificates;

provided, however, that such amount shall in no event exceed the outstanding
Class Certificate Balance of such Class of Certificates immediately prior to
such date.

      Subsequent Recoveries: Any amount recovered by a Servicer or the Master
Servicer (net of reimbursable expenses) with respect to a Liquidated Mortgage
Loan with respect to which a Realized Loss was incurred after the liquidation or
disposition of such Mortgage Loan.

      Sub-Servicer: Any Person that services Mortgage Loans on behalf of a
Servicer, and is responsible for the performance (whether directly or through
sub-servicers or Subcontractors) of servicing functions required to be performed
under this Agreement, any related Servicing Agreement or any sub-servicing
agreement that are identified in Item 1122(d) of Regulation AB.

                                      -52-
<PAGE>

      Substitute Mortgage Loan: With respect to any Mortgage Loan, which is
tendered to the Trustee pursuant to the related Servicing Agreement, the
Mortgage Loan Purchase Agreement or Section 2.04 of this Agreement, as
applicable, in each case, (i) which has an Outstanding Principal Balance not
greater nor materially less than the Mortgage Loan for which it is to be
substituted; (ii) which has a Mortgage Interest Rate and Net Rate not less than,
and not materially greater than, such Mortgage Loan; (iii) which has a maturity
date not materially earlier or later than such Mortgage Loan and not later than
the latest maturity date of any Mortgage Loan; (iv) which is of the same
property type and occupancy type as such Mortgage Loan; (v) which has a
Loan-to-Value Ratio not greater than the Loan-to-Value Ratio of such Mortgage
Loan; (vi) which is current in payment of principal and interest as of the date
of substitution; (vii) as to which the payment terms do not vary in any material
respect from the payment terms of the Mortgage Loan for which it is to be
substituted and (viii) which has a Gross Margin, Periodic Rate Cap and Maximum
Lifetime Mortgage Rate no less than those of such Mortgage Loan, has the same
Index and interval between Interest Adjustment Dates as such Mortgage Loan, and
a Minimum Lifetime Mortgage Rate no lower than that of such Mortgage Loan.

      Tax Matters Person: The Securities Administrator or any successor thereto
or assignee thereof shall serve as tax administrator hereunder and as agent for
the Tax Matters Person. The Holder of the Residual Certificates shall be the Tax
Matters Person for the related REMIC, as more particularly set forth in Section
9.12 hereof.

      Transfer: Any direct or indirect transfer or sale of any Ownership
Interest in a certificate.

      Transferor Representation Letter: As defined in Section 5.02(b).

      Trustee: HSBC Bank USA, National Association, or its successor in
interest, or any successor trustee appointed as herein provided.

      Trust Fund: The corpus of the Issuing Entity created pursuant to this
Agreement, consisting of (i) the Mortgage Loans, including the right to all
payments of principal and interest received on or with respect to the Mortgage
Loans on and after the Cut-off Date (other than Scheduled Payments due on or
before such date), and all such payments due after such date but received prior
to such date and intended by the related Mortgagors to be applied after such
date; (ii) all of the Depositor's right, title and interest in and to all
amounts from time to time credited to and the proceeds of the Protected
Accounts, the Master Servicer Collection Account and the Distribution Account
established with respect to the Mortgage Loans; (iii) all of the Depositor's
rights under the Mortgage Loan Purchase Agreement, the Assignment Agreements and
the Servicing Agreements; (iv) all of the Depositor's right, title or interest
in REO Property and the proceeds thereof; (v) all of the Depositor's rights
under any Insurance Policies relating to the Mortgage Loans; and (vi) all
proceeds of the conversion, voluntary or involuntary, of any of the foregoing
into cash or other liquid assets, including without limitation, all Insurance
Proceeds, Liquidation Proceeds and condemnation awards and any proceeds of the
foregoing.

      Undercollateralized Amount: On any Distribution Date, the excess of (x)
the aggregate Class Certificate Balance of any Class or Classes of Senior
Certificates related to a Loan Group

                                      -53-
<PAGE>

immediately prior to such Distribution Date over (y) the aggregate Stated
Principal Balance of the Mortgage Loans in its related Loan Group as of the
beginning of the related Due Period.

      Undercollateralized Senior Certificates: As defined in Section 6.01(I).

      Underlying Seller: With respect to each Mortgage Loan, GreenPoint,
National City, Quicken Loans Inc., Merrill Lynch Credit Corporation, Everbank,
MortgageIT, Inc., Wells Fargo, Comunity Lending, Incorporated, American Mortgage
Express Financial d/b/a Millenium Funding Group, Countrywide Home Loans LP,
Market Street Mortgage Corporation, as indicated on the Mortgage Loan Schedule.

      Uninsured Cause: Any cause of damage to a Mortgaged Property or related
REO Property such that the complete restoration of such Mortgaged Property or
related REO Property is not fully reimbursable by the hazard insurance policies
required to be maintained pursuant the related Servicing Agreement, without
regard to whether or not such policy is maintained.

      United States Person: A citizen or resident of the United States, a
corporation or partnership (including an entity treated as a corporation or
partnership for federal income tax purposes) created or organized in, or under
the laws of, the United States or any state thereof or the District of Columbia
(except, in the case of a partnership, to the extent provided in regulations),
provided that, for purposes solely of the Class A-R Certificate, no partnership
or other entity treated as a partnership for United States federal income tax
purposes shall be treated as a United States Person unless all persons that own
an interest in such partnership either directly or through any entity that is
not a corporation for United States federal income tax purposes are United
States Persons, or an estate whose income is subject to United States federal
income tax regardless of its source, or a trust if a court within the United
States is able to exercise primary supervision over the administration of the
trust and one or more such United States Persons have the authority to control
all substantial decisions of the trust. To the extent prescribed in regulations
by the Secretary of the Treasury, which have not yet been issued, a trust which
was in existence on August 20, 1996 (other than a trust treated as owned by the
grantor under subpart E of part I of subchapter J of chapter 1 of the Code), and
which was treated as a United States person on August 20, 1996 may elect to
continue to be treated as a United States person notwithstanding the previous
sentence.

      Upper Tier REMIC: As described in the Preliminary Statement.

      Upper Tier REMIC Regular Interest: Each of (i) the Class II-A
Certificates, Class III-A-1 Certificates, the Class III-A-2 Certificates, the
Class IV-A-1 Certificates, the Class IV-A-2 Certificates, the Class V-A
Certificates, the Class M-1 Certificates, the Class M-2 Certificates, the Class
M-3 Certificates, the Class B-1 Certificates, the Class B-2 Certificates and the
Class B-3 Certificates, (ii) the uncertificated REMIC regular interest
represented by the rights associated with the Class I-A Certificates other than
rights to receive payments in respect of Basis Risk Shortfall Amounts and (iii)
the uncertificated REMIC regular interest represented by the rights associated
with the Class X-A Certificates as determined without regard to the obligation
to make payments in respect of Basis Risk Shortfall Amounts.

                                      -54-
<PAGE>

      Voting Rights: The portion of the voting rights of all of the Certificates
which is allocated to any Certificate. The Voting Rights allocated among Holders
of such Certificates outstanding shall be the fraction, expressed as a
percentage, the numerator of which is the aggregate Class Certificate Balance of
all the Certificates of such Class then outstanding and the denominator of which
is the aggregate Class Certificate Balance of all the Certificates then
outstanding (other than the Class A-R Certificate). 99.00% of all Voting Rights
will be allocated among all holders of the Certificates (other than the Class
A-R Certificate) in proportion to their then outstanding Class Certificate
Balances, and 1.00% of the Voting Rights shall be allocated to the Class A-R
Certificate; provided, however, that any Certificate registered in the name of
the Master Servicer, the Depositor or the Securities Administrator or any of
their respective affiliates shall not be included in the calculation of Voting
Rights. The Class P Certificates shall have no voting rights.

      Wells Fargo: Wells Fargo Bank, N.A., or any successor thereto.

      Wells Fargo Assignment Agreement: The Assignment, Assumption and
Recognition Agreement, dated as of July 1, 2006, among Wells Fargo Bank, N.A.,
the Depositor and the Seller pursuant to which the Wells Fargo Servicing
Agreement and the rights of the Seller thereunder (other than the rights to
enforce the representations and warranties with respect to the Wells Fargo
Mortgage Loans) were assigned to the Depositor for the benefit of the
Certificateholders.

      Wells Fargo Mortgage Loans: The Mortgage Loans serviced by Wells Fargo
pursuant to the Wells Fargo Servicing Agreement.

      Wells Fargo Servicing Agreement: The Seller's Warranties and Servicing
Agreement, dated as of August 1, 2005, among Merrill Lynch Mortgage Lending Inc.
and Wells Fargo Bank, N.A. (as amended and in effect at any time)..

   Section 1.02 Accounting.

      Unless otherwise specified herein, for the purpose of any definition or
calculation, whenever amounts are required to be netted, subtracted or added or
any distributions are taken into account such definition or calculation and any
related definitions or calculations shall be determined without duplication of
such functions.

                                   ARTICLE II
                             CONVEYANCE OF MORTGAGE
                    LOANS; ORIGINAL ISSUANCE OF CERTIFICATES

   Section 2.01 Conveyance of Mortgage Loans to Trustee.

      (a) The Depositor concurrently with the execution and delivery of this
Agreement, sells, transfers and assigns to the Issuing Entity without recourse
all its right, title and interest in and to (i) the Mortgage Loans identified in
the Mortgage Loan Schedule, including all interest and principal due with
respect to the Mortgage Loans after the Cut-off Date, but excluding any

                                      -55-
<PAGE>

payments of principal and interest due on or prior to the Cut-off Date; (ii)
such assets as shall from time to time be credited or are required by the terms
of this Agreement to be credited to the Master Servicer Collection Account,
(iii) such assets relating to the Mortgage Loans as from time to time may be
held by the Servicers in Protected Accounts, the Master Servicer in the Master
Servicer Collection Account and the Securities Administrator in the Distribution
Account for the benefit of the Trustee on behalf of the Certificateholders, (iv)
any REO Property, (v) the Required Insurance Policies and any amounts paid or
payable by the insurer under any Insurance Policy (to the extent the mortgagee
has a claim thereto), (vi) the Mortgage Loan Purchase Agreement to the extent
provided in Subsection 2.03(a), (vii) the rights with respect to the Servicing
Agreements as assigned to the Depositor on behalf of the Certificateholders by
the Assignment Agreements and (viii) any proceeds of the foregoing. Although it
is the intent of the parties to this Agreement that the conveyance of the
Depositor's right, title and interest in and to the Mortgage Loans and other
assets in the Trust Fund pursuant to this Agreement shall constitute a purchase
and sale and not a loan, in the event that such conveyance is deemed to be a
loan, it is the intent of the parties to this Agreement that the Depositor shall
be deemed to have granted to the Trustee a first priority perfected security
interest in all of the Depositor's right, title and interest in, to and under
the Mortgage Loans and other assets in the Trust Fund, and that this Agreement
shall constitute a security agreement under applicable law.

      (a) In connection with the above transfer and assignment, the Depositor
hereby deposits with the Trustee or the Custodian, as its agent, the following
documents or instruments

(I) with respect to each Mortgage Loan, other than a Cooperative Loan:

            (i) the original Mortgage Note, endorsed in the following form: "Pay
      to the order of HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4, without recourse," with all
      prior and intervening endorsements showing a complete chain of endorsement
      from the originator to the Person so endorsing to the Trustee;

            (ii) the original recorded Mortgage or a copy of the Mortgage
      certified by the public recording office in which such Mortgage has been
      recorded;

            (iii) an original Assignment of the Mortgage executed in the
      following form: "HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4.

            (iv) the original recorded Assignment or Assignments of the Mortgage
      showing a complete chain of assignment from the originator to the Person
      assigning the Mortgage to the Trustee as contemplated by the immediately
      preceding clause (iii), if applicable and only to the extent available to
      the Depositor with evidence of recording thereon;

            (v) the originals of all assumption, modification, consolidation or
      extension agreements, with evidence of recording thereon, if any;

                                      -56-
<PAGE>

            (vi) the original of any guarantee executed in connection with the
      Mortgage Note;

            (vii) the original mortgagee title insurance policy;

            (viii) the original of any security agreement, chattel mortgage or
      equivalent document executed in connection with the Mortgage; and

            (ix) the original power of attorney, if applicable.

and (II) with respect to each Mortgage Loan that is a Cooperative Loan:

            (x) the original Mortgage Note, endorsed in the following form: "Pay
      to the order of HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4, without recourse," with all
      prior and intervening endorsements showing a complete chain of endorsement
      from the originator to the Person so endorsing to the Trustee;

            (xi) the original duly executed assignment of Security Agreement to
      the Trustee;

            (xii) the acknowledgment copy of the original executed Form UCC-1
      (or certified copy thereof) with respect to the Security Agreement, and
      any required continuation statements;

            (xiii) the acknowledgment copy of the original executed Form UCC-3
      with respect to the Security Agreement, indicating the Trustee as the
      assignee of the secured party;

            (xiv) the stock certificate representing the Cooperative Assets
      allocated to the cooperative unit, with a stock power in blank attached;

            (xv) the original collateral assignment of the proprietary lease by
      Mortgagor to the originator;

            (xvi) a copy of the recognition agreement;

            (xvii) if applicable and to the extent available, the original
      intervening assignments, including warehousing assignments, if any,
      showing, to the extent available, an unbroken chain of the related
      Mortgage Loan to the Trustee, together with a copy of the related Form
      UCC-3 with evidence of filing thereon; and

            (xviii) the originals of each assumption, modification or
      substitution agreement, if any, relating to the Mortgage Loan;

provided, however, that in lieu of the foregoing, the Depositor may deliver the
following documents, under the circumstances set forth below: (w) the Depositor
may deliver a Mortgage

                                      -57-
<PAGE>

Note pursuant to (a)(i) and (b)(i) endorsed in blank, provided that the
endorsement is completed within 60 days of the Closing Date; (x) in lieu of the
original Mortgage, assignments to the Trustee or its Custodian, as applicable,
or intervening assignments thereof which have been delivered, are being
delivered or will, upon receipt of recording information relating to the
Mortgage required to be included thereon, be delivered to recording offices for
recording and have not been returned to the Depositor in time to permit their
delivery as specified above, the Depositor may deliver a true copy thereof with
a certification by the Depositor on the face of such copy, substantially as
follows: "Certified to be a true and correct copy of the original, which has
been transmitted for recording"; and (y) in lieu of the Mortgage, assignment to
the Trustee or intervening assignments thereof, if the applicable jurisdiction
retains the originals of such documents (as evidenced by a certification from
the Depositor or the Master Servicer, to such effect) the Depositor may deliver
photocopies of such documents containing an original certification by the
judicial or other governmental authority of the jurisdiction where such
documents were recorded; and provided, further, however, that in the case of
Mortgage Loans which have been prepaid in full after the Cut-off Date and prior
to the Closing Date, the Depositor, in lieu of delivering the above documents,
may deliver to the Trustee or its Custodian, as applicable, a certification to
such effect and shall deposit all amounts paid in respect of such Mortgage Loans
in the Distribution Account on the Closing Date. The Depositor shall deliver
such original documents (including any original documents as to which certified
copies had previously been delivered) to the Trustee or its Custodian, as
applicable, promptly after they are received. As of the date hereof, recordation
of the assignment of the Mortgage Loans to the Trustee or the Custodian, as
applicable, is not required in any state by either Rating Agency to obtain the
initial rating on the Certificates (upon which statement the Master Servicer,
the Trustee and the Custodian may each conclusively rely).

      If any original Mortgage Note referred to in Section 2.01(b)(I)(i) or
2.01(b)(II)(i) above cannot be located, the obligations of the Depositor to
deliver such documents shall be deemed to be satisfied upon delivery to the
Trustee or its Custodian, as applicable, of a photocopy of such Mortgage Note,
if available, with a lost note affidavit. If any of the original Mortgage Notes
for which a lost note affidavit was delivered to the Trustee or its Custodian,
as applicable, is subsequently located, such original Mortgage Note shall be
delivered to the Trustee or its Custodian, as applicable, within three Business
Days.

      (c) The parties hereto agree that it is not intended that any mortgage
loan be included in the Trust Fund that is, without limitation, a "High Cost
Loan" as defined by the Home Ownership and Equity Protection Act of 1994 or any
other applicable anti-predatory lending laws, including but not limited to (i) a
"High-Cost Home Loan" as defined in the New Jersey Home Ownership Act effective
November 27, 2003, (ii) a "High-Cost Home Loan" as defined in the New Mexico
Home Loan Protection Act effective January 1, 2004, (iii) a "High Cost Home
Mortgage Loan" as defined in the Massachusetts Predatory Home Loan Practices Act
effective November 7, 2004 or (iv) a "High-Cost Home Loan" as defined by the
Indiana High Cost Home Loan Law effective January 1, 2005.

      (d) Notwithstanding anything to the contrary contained herein, the parties
hereto acknowledge that the functions of the Trustee with respect to the
custody, acceptance, inspection and release of Mortgage Files, including but not
limited to certain insurance policies and documents contemplated by Section 3.12
of this Agreement, and preparation and delivery of the

                                      -58-
<PAGE>

certifications shall be performed by the Custodian(s) pursuant to the terms and
conditions of the Custodial Agreement(s).

   Section 2.02 Acceptance of Mortgage Loans by Trustee.

      (a) The Trustee acknowledges the sale, transfer and assignment of the
Trust Fund to it by the Depositor and its receipt thereof, subject to further
review and the exceptions which may be noted pursuant to the procedures
described below, and declares that it, or the Custodian on its behalf, holds the
documents (or certified copies thereof) delivered to it pursuant to Section
2.01, and declares that it will continue to hold those documents and any
amendments, replacements or supplements thereto and all other assets of the
Trust Fund delivered to it as Trustee in trust for the use and benefit of all
present and future Holders of the Certificates. On or before the Closing Date
(or, with respect to any Substitute Mortgage Loan, within five Business Days
after the receipt by the Trustee or Custodian thereof), the Trustee agrees, for
the benefit of the Certificateholders, to review or cause to be reviewed by the
Custodian on its behalf (under the Custodial Agreement), each Mortgage File
delivered to it and to execute and deliver, or cause to be executed and
delivered, to the Depositor on the Closing Date an Initial Certification. In
conducting such review, the Trustee or Custodian will certify as to each
Mortgage Loan listed in the Mortgage Loan Schedule (other than any Mortgage Loan
paid in full or any Mortgage Loan specifically identified in the exception
report annexed thereto as not being covered by such certification), (i) all
documents constituting part of such Mortgage File (other than such documents
described in Section 2.01(b)(I)(iii)) required to be delivered to it pursuant to
this Agreement are in its possession, provided that with respect to the
documents described in Section 2.01(b)(I)(v), (vi), (viii) and (ix) and
2.01(b)(II)(viii) and (ix) to the extent the Trustee or the Custodian on its
behalf has actual knowledge that such documents exist, (ii) such documents have
been reviewed by it and are not torn, mutilated, defaced or otherwise altered
(except if initialed by the obligor) and appear to relate on their face to such
Mortgage Loan, (iii) based on its examination and only as to the foregoing, the
information set forth in the Mortgage Loan Schedule corresponding to the loan
number for the Mortgage Loan, the Mortgagor's name, including the street address
but excluding the zip code, the Mortgage Interest Rate and the original
principal balance of the Mortgage Loan accurately reflects information set forth
in the Mortgage File and (iv) with respect to Mortgage Loans with a Mortgage
Interest Rate subject to adjustment, the Gross Margin, the lifetime cap and the
periodic cap for such Mortgage Loan. In performing any such review, the Trustee,
or the Custodian, as its agent, may conclusively rely on the purported due
execution and genuineness of any such document and on the purported genuineness
of any signature thereon. Notwithstanding anything to the contrary in this
Agreement, it is herein acknowledged that, in conducting such review, the
Trustee or the Custodian on its behalf is under no duty or obligation to
inspect, review or examine any such documents, instruments, certificates or
other papers to determine whether they are genuine, enforceable, or appropriate
for the represented purpose or whether they have actually been recorded or that
they are other than what they purport to be on their face, or to determine
whether any Person executing any documents is authorized to do so or whether any
signature is genuine.

      If the Trustee or the Custodian, as its agent, finds any document
constituting part of the Mortgage File not to have been executed or received, or
to be unrelated to the Mortgage Loans identified in Exhibit B or to appear to be
defective on its face, the Trustee or the Custodian, as its agent, shall
promptly notify the Seller. In accordance with the Mortgage Loan Purchase

                                      -59-
<PAGE>

Agreement, the Seller shall correct or cure any such defect within ninety (90)
days from the date of notice from the Trustee or the Custodian, as its agent, of
the defect and if the Seller fails to correct or cure the defect within such
period, and such defect materially and adversely affects the interests of the
Certificateholders in the related Mortgage Loan, the Trustee, shall enforce the
Seller's obligation pursuant to the Mortgage Loan Purchase Agreement, within 90
days from the Trustee's or the Custodian's notification, to purchase such
Mortgage Loan at the Purchase Price; provided that, if such defect would cause
the Mortgage Loan to be other than a "qualified mortgage" as defined in Section
860G(a)(3) of the Code, any such cure or repurchase must occur within 90 days
from the date such breach was discovered; provided, however, that if such defect
relates solely to the inability of the Seller to deliver the original Security
Instrument or intervening assignments thereof, or a certified copy because the
originals of such documents, or a certified copy have not been returned by the
applicable jurisdiction, the Seller shall not be required to purchase such
Mortgage Loan if the Seller delivers such original documents or certified copy
promptly upon receipt, but in no event later than 360 days after the Closing
Date. The foregoing repurchase obligation shall not apply in the event that the
Seller cannot deliver such original or copy of any document submitted for
recording to the appropriate recording office in the applicable jurisdiction
because such document has not been returned by such office; provided that the
Seller shall instead deliver a recording receipt of such recording office or, if
such receipt is not available, a certificate confirming that such documents have
been accepted for recording, and delivery to the Trustee or the Custodian, as
its agent, shall be effected by the Seller within thirty days of its receipt of
the original recorded document.

      (b) No later than 180 days after the Closing Date, the Trustee or the
Custodian, as its agent, will review, for the benefit of the Certificateholders,
the Mortgage Files delivered to it and will execute and deliver or cause to be
executed and delivered to the Depositor a Final Certification. In conducting
such review, the Trustee or the Custodian, as its agent, will certify as to each
Mortgage Loan listed in the Mortgage Loan Schedule (other than any Mortgage Loan
paid in full or any Mortgage Loan specifically identified in the exception
report annexed thereto as not being covered by such certification), that (i) all
documents constituting part of such Mortgage File (other than such documents
described in Section 2.01(b)(I)(v) and (ix)) required to be delivered to it
pursuant to this Agreement are in its possession, provided that with respect to
the documents described in Section 2.01(b)(I)(v), (vi), (viii) and (ix) and
2.01(b)(II)(viii) and (ix) to the extent the Trustee or the Custodian on its
behalf has actual knowledge that such documents exist, (ii) such documents have
been reviewed by it and are not torn, mutilated, defaced or otherwise altered
(except if initialed by the obligor) and appear regular on their face and relate
to such Mortgage Loan, (iii) based on its examination and only as to the
foregoing, the information set forth in the Mortgage Loan Schedule corresponding
to the loan number for the Mortgage Loan, the Mortgagor's name, including the
street address but excluding the zip code, the Mortgage Interest Rate and the
original principal balance of the Mortgage Loan accurately reflects information
set forth in the Mortgage File. In performing any such review, the Trustee, or
the Custodian, as its agent, may conclusively rely on the purported due
execution and genuineness of any such document and on the purported genuineness
of any signature thereon. Notwithstanding anything to the contrary in this
Agreement, it is herein acknowledged that, in conducting such review, the
Trustee or the Custodian on its behalf is under no duty or obligation (i) to
inspect, review or examine any such documents, instruments, certificates or
other papers to determine whether they are genuine, enforceable, or appropriate
for the represented purpose or whether they have actually been recorded or that
they are other than what they purport to be

                                      -60-
<PAGE>

their face, or to determine whether any Person executing any documents is
authorized to do so or whether any signature is genuine. If the Trustee or the
Custodian, as its agent, finds any document constituting part of the Mortgage
File not to have been executed or received, or to be unrelated to the Mortgage
Loans identified in Exhibit B or to appear to be defective on its face, the
Trustee or the Custodian, as its agent, shall promptly notify the Seller. In
accordance with the Mortgage Loan Purchase Agreement, the Seller shall correct
or cure any such defect within 90 days from the date of notice from the Trustee
of the defect and if the Seller is unable to cure such defect within such
period, and if such defect materially and adversely affects the interests of the
Certificateholders in the related Mortgage Loan, the Trustee shall enforce the
Seller's obligation under the Mortgage Loan Purchase Agreement to purchase such
Mortgage Loan at the Purchase Price, provided, however, that if such defect
relates solely to the inability of the Seller to deliver the original Security
Instrument or intervening assignments thereof, or a certified copy, because the
originals of such documents, or a certified copy, have not been returned by the
applicable jurisdiction, the Seller shall not be required to purchase such
Mortgage Loan, if the Seller delivers such original documents or certified copy
promptly upon receipt, but in no event later than 360 days after the Closing
Date.

      (c) In the event that a Mortgage Loan is purchased by the Seller in
accordance with Subsections 2.02(a) or (b) above, the Seller shall remit to the
Master Servicer the Purchase Price for deposit in the Master Servicer Collection
Account and the Seller shall provide to the Trustee written notification
detailing the components of the Purchase Price. Upon deposit of the Purchase
Price in the Master Servicer Collection Account, the Depositor shall give
written notice thereof to the Trustee and the Custodian and the Trustee or the
Custodian, as its agent (upon receipt of a Request for Release in the form of
Exhibit D attached hereto with respect to such Mortgage Loan), shall release to
the Seller the related Mortgage File and the Trustee shall execute and deliver
all instruments of transfer or assignment, without recourse, furnished to it by
the Seller as are necessary to vest in the Seller title to and rights under the
Mortgage Loan. Such purchase shall be deemed to have occurred on the date on
which the Purchase Price in available funds is received by the Trustee. The
Depositor or Master Servicer shall amend the Mortgage Loan Schedule, to reflect
such repurchase and shall promptly notify the Rating Agencies and the Master
Servicer of such amendment. The obligation of the Seller to repurchase any
Mortgage Loan as to which such a defect in a constituent document exists shall
be the sole remedy respecting such defect available to the Certificateholders or
to the Trustee on their behalf.

   Section 2.03 Assignment of Interest in the Mortgage Loan Purchase Agreement.

      (a) The Depositor hereby assigns to the Trustee, on behalf of the
Certificateholders, all of its right, title and interest in the Mortgage Loan
Purchase Agreement, including but not limited to Depositor's rights pursuant to
the Servicing Agreements (noting that the Seller has retained the right in the
event of breach of the representations, warranties and covenants, if any, with
respect to the related Mortgage Loans of the related Servicer under the related
Servicing Agreement to enforce the provisions thereof and to seek all or any
available remedies). The obligations of the Seller to substitute or repurchase,
as applicable, a Mortgage Loan shall be the Trustee's and the
Certificateholders' sole remedy for any breach thereof. At the request of the
Trustee, the Depositor shall take such actions as may be necessary to enforce
the above right, title and interest on behalf of the Trustee and the
Certificateholders or shall execute such further documents as the Trustee may
reasonably require in order to enable the Trustee to carry out such on

                                      -61-
<PAGE>

enforcement. With respect to the representations and warranties described in the
Mortgage Loan Purchase Agreement that are made to the best of the Seller's
knowledge, if it is discovered by any of the Depositor, the Seller, the Master
Servicer, the Securities Administrator or the Trustee that the substance of such
representation and warranty is inaccurate and such inaccuracy materially and
adversely affects the value of the related Mortgage Loan, then notwithstanding
the Seller's lack of knowledge with respect to the substance of such
representation and warranty, such inaccuracy shall be deemed a breach of the
applicable representation or warranty.

      (b) If the Depositor, the Master Servicer, Securities Administrator or the
Trustee discovers a breach of any of the representations and warranties set
forth in the Mortgage Loan Purchase Agreement, which breach materially and
adversely affects the value of the interests of Certificateholders or the
Trustee in the related Mortgage Loan, the party discovering the breach shall
give prompt written notice of the breach to the other parties. The Seller,
within 90 days of its discovery or receipt of notice that such breach has
occurred (whichever occurs earlier), shall cure the breach in all material
respects or, subject to the Mortgage Loan Purchase Agreement or Section 2.04 of
this Agreement, as applicable, shall purchase the Mortgage Loan or any property
acquired with respect thereto from the Trustee; provided, however, that if there
is a breach of any representation set forth in the Mortgage Loan Purchase
Agreement or Section 2.04 of this Agreement, as applicable, and the Mortgage
Loan or the related property acquired with respect thereto has been sold, then
the Seller shall pay, in lieu of the Purchase Price, any excess of the Purchase
Price over the Net Liquidation Proceeds received upon such sale. (If the Net
Liquidation Proceeds exceed the Purchase Price, any excess shall be paid to the
Seller to the extent not required by law to be paid to the borrower.) Any such
purchase by the Seller shall be made by providing an amount equal to the
Purchase Price to the Master Servicer for deposit in the Master Servicer
Collection Account and written notification detailing the components of such
Purchase Price. The Depositor shall notify the Trustee in writing of the deposit
of the Purchase Price and submit to the Trustee or the Custodian, as its agent,
a Request for Release, and the Trustee shall release, or the Trustee shall cause
the Custodian to release, to the Seller the related Mortgage File and the
Trustee shall execute and deliver all instruments of transfer or assignment
furnished to it by the Seller, without recourse, as are necessary to vest in the
Seller title to and rights under the Mortgage Loan or any property acquired with
respect thereto. Such purchase shall be deemed to have occurred on the date on
which the Purchase Price in available funds is received by the Master Servicer.
The Depositor or the Master Servicer shall amend the Mortgage Loan Schedule to
reflect such repurchase and shall promptly notify the Master Servicer and the
Rating Agencies of such amendment. Enforcement of the obligation of the Seller
to purchase (or substitute a Substitute Mortgage Loan for) any Mortgage Loan or
any property acquired with respect thereto (or pay the Purchase Price as set
forth in the above proviso) as to which a breach has occurred and is continuing
shall constitute the sole remedy respecting such breach available to the
Certificateholders or the Trustee on their behalf.

   Section 2.04 Substitution of Mortgage Loans. Notwithstanding anything to the
contrary in this Agreement, in lieu of purchasing a Mortgage Loan pursuant to
the Mortgage Loan Purchase Agreement or Sections 2.02 or 2.03 of this Agreement,
the Seller may, no later than the date by which such purchase by the Seller
would otherwise be required, tender to the Trustee a Substitute Mortgage Loan
accompanied by a certificate of an authorized officer of the Seller that such
Substitute Mortgage Loan conforms to the requirements set forth in the
definition of "Substitute Mortgage Loan" in the Mortgage Loan Purchase Agreement
or this Agreement, as

                                      -62-
<PAGE>

applicable; provided, however, that substitution pursuant to the Mortgage Loan
Purchase Agreement or Section 2.04 of this Agreement, as applicable, in lieu of
purchase shall not be permitted after the termination of the two-year period
beginning on the Startup Day; provided, further, that if the breach would cause
the Mortgage Loan to be other than a "qualified mortgage" as defined in Section
860G(a)(3) of the Code, any such cure or substitution must occur within 90 days
from the date the breach was discovered. The Trustee or the Custodian, as its
agent, shall examine the Mortgage File for any Substitute Mortgage Loan in the
manner set forth in Section 2.02(a) and the Trustee or the Custodian, as its
agent, shall notify the Seller, in writing, within five Business Days after
receipt, whether or not the documents relating to the Substitute Mortgage Loan
satisfy the requirements of the fourth sentence of Subsection 2.02(a). Within
two Business Days after such notification, the Seller shall provide to the
Securities Administrator for deposit in the Distribution Account the amount, if
any, by which the Outstanding Principal Balance as of the next preceding Due
Date of the Mortgage Loan for which substitution is being made, after giving
effect to Scheduled Principal due on such date, exceeds the Outstanding
Principal Balance as of such date of the Substitute Mortgage Loan, after giving
effect to Scheduled Principal due on such date, which amount shall be treated
for the purposes of this Agreement as if it were the payment by the Seller of
the Purchase Price for the purchase of a Mortgage Loan by the Seller. After such
notification to the Seller and, if any such excess exists, upon written
notification of the receipt of such deposit, the Trustee shall accept such
Substitute Mortgage Loan which shall thereafter be deemed to be a Mortgage Loan
hereunder. In the event of such a substitution, accrued interest on the
Substitute Mortgage Loan for the month in which the substitution occurs and any
Principal Prepayments made thereon during such month shall be the property of
the Issuing Entity and accrued interest for such month on the Mortgage Loan for
which the substitution is made and any Principal Prepayments made thereon during
such month shall be the property of the Seller. The Scheduled Principal on a
Substitute Mortgage Loan due on the Due Date in the month of substitution shall
be the property of the Seller and the Scheduled Principal on the Mortgage Loan
for which the substitution is made due on such Due Date shall be the property of
the Issuing Entity. Upon acceptance of the Substitute Mortgage Loan (and
delivery to the Trustee or Custodian of a Request for Release for such Mortgage
Loan), the Trustee shall release to the Seller the related Mortgage File related
to any Mortgage Loan released pursuant to the Mortgage Loan Purchase Agreement
or Section 2.04 of this Agreement, as applicable, and shall execute and deliver
all instruments of transfer or assignment, without recourse, in form as provided
to it as are necessary to vest in the Seller title to and rights under any
Mortgage Loan released pursuant to the Mortgage Loan Purchase Agreement or
Section 2.04 of this Agreement, as applicable. The Seller shall deliver the
documents related to the Substitute Mortgage Loan in accordance with the
provisions of the Mortgage Loan Purchase Agreement or Subsections 2.01(b) and
2.02(b) of this Agreement, as applicable, with the date of acceptance of the
Substitute Mortgage Loan deemed to be the Closing Date for purposes of the time
periods set forth in those Subsections. The representations and warranties set
forth in the Mortgage Loan Purchase Agreement shall be deemed to have been made
by the Seller with respect to each Substitute Mortgage Loan as of the date of
acceptance of such Mortgage Loan by the Trustee. The Master Servicer shall amend
the Mortgage Loan Schedule to reflect such substitution and shall provide a copy
of such amended Mortgage Loan Schedule to the Trustee and the Rating Agencies.

      Notwithstanding any other provision of this Agreement, the right to
substitute Mortgage Loans pursuant to this Article II shall be subject to the
additional limitations that no substitution

                                      -63-
<PAGE>

of a Mortgage Loan shall be made unless the Securities Administrator and the
Trustee shall have received an Opinion of Counsel (at the expense of the party
seeking to make the substitution) that, under current law, such substitution
will not (A) affect adversely the status of any REMIC established hereunder as a
REMIC, or of the related "regular interests" as "regular interests" in any such
REMIC, or (B) cause any such REMIC to engage in a "prohibited transaction" or
prohibited contribution pursuant to the REMIC provisions.

   Section 2.05 Issuance of Certificates. The Trustee acknowledges the
assignment to it on behalf of the Issuing Entity of the Mortgage Loans and the
other assets comprising the Trust Fund and, concurrently therewith, the
Securities Administrator has signed, and countersigned and delivered to the
Depositor, in exchange therefor, Certificates in such authorized denominations
representing such Percentage Interests as the Depositor has requested. The
Trustee agrees that it will hold the Mortgage Loans and such other assets as may
from time to time be delivered to it segregated on the books of the Trustee in
trust for the benefit of the Certificateholders.

   Section 2.06 Representations and Warranties Concerning the Depositor. The
Depositor hereby represents and warrants to the Trustee, the Master Servicer and
the Securities Administrator as follows:

            (i) the Depositor (a) is a corporation duly organized, validly
      existing and in good standing under the laws of the State of Delaware and
      (b) is qualified and in good standing as a foreign corporation to do
      business in each jurisdiction where such qualification is necessary,
      except where the failure so to qualify would not reasonably be expected to
      have a material adverse effect on the Depositor's business as presently
      conducted or on the Depositor's ability to enter into this Agreement and
      to consummate the transactions contemplated hereby;

            (ii) the Depositor has full corporate power to own its property, to
      carry on its business as presently conducted and to enter into and perform
      its obligations under this Agreement;

            (iii) the execution and delivery by the Depositor of this Agreement
      have been duly authorized by all necessary corporate action on the part of
      the Depositor; and neither the execution and delivery of this Agreement,
      nor the consummation of the transactions herein contemplated, nor
      compliance with the provisions hereof, will conflict with or result in a
      breach of, or constitute a default under, any of the provisions of any
      law, governmental rule, regulation, judgment, decree or order binding on
      the Depositor or its properties or the articles of incorporation or
      by-laws of the Depositor, except those conflicts, breaches or defaults
      which would not reasonably be expected to have a material adverse effect
      on the Depositor's ability to enter into this Agreement and to consummate
      the transactions contemplated hereby;

            (iv) the execution, delivery and performance by the Depositor of
      this Agreement and the consummation of the transactions contemplated
      hereby do not require the consent or approval of, the giving of notice to,
      the registration with, or the taking of any other action in respect of,
      any state, federal or other governmental authority or

                                      -64-
<PAGE>

      agency, except those consents, approvals, notices, registrations or other
      actions as have already been obtained, given or made;

            (v) this Agreement has been duly executed and delivered by the
      Depositor and, assuming due authorization, execution and delivery by the
      other parties hereto, constitutes a valid and binding obligation of the
      Depositor enforceable against it in accordance with its terms (subject to
      applicable bankruptcy and insolvency laws and other similar laws affecting
      the enforcement of the rights of creditors generally);

            (vi) there are no actions, suits or proceedings pending or, to the
      knowledge of the Depositor, threatened against the Depositor, before or by
      any court, administrative agency, arbitrator or governmental body (i) with
      respect to any of the transactions contemplated by this Agreement or (ii)
      with respect to any other matter which in the judgment of the Depositor
      will be determined adversely to the Depositor and will if determined
      adversely to the Depositor materially and adversely affect the Depositor's
      ability to enter into this Agreement or perform its obligations under this
      Agreement; and the Depositor is not in default with respect to any order
      of any court, administrative agency, arbitrator or governmental body so as
      to materially and adversely affect the transactions contemplated by this
      Agreement; and

            (vii) immediately prior to the transfer and assignment to the
      Trustee, each Mortgage Note and each Mortgage were not subject to an
      assignment or pledge, and the Depositor had good and marketable title to
      and was the sole owner thereof and had full right to transfer and sell
      such Mortgage Loan to the Trustee free and clear of any encumbrance,
      equity, lien, pledge, charge, claim or security interest.

   Section 2.07 Representations and Warranties Concerning the Master Servicer
and Securities Administrator. Wells Fargo Bank, N.A., in its capacity as Master
Servicer and Securities Administrator hereby represents and warrants to the
Seller, the Depositor and the Trustee as follows, as of the Closing Date:

            (i) It is a national banking association duly formed, validly
      existing and in good standing under the laws of the United States of
      America and is duly authorized and qualified to transact any and all
      business contemplated by this Agreement to be conducted by the Master
      Servicer and the Securities Administrator, to the extent necessary to
      ensure its ability to master service the Mortgage Loans in accordance with
      the terms of this Agreement and to perform any of its other obligations
      under this Agreement in accordance with the terms hereof;

            (ii) It has the full corporate power and authority to execute,
      deliver and perform, and to enter into and consummate the transactions
      contemplated by this Agreement and has duly authorized by all necessary
      corporate action on its part the execution, delivery and performance of
      this Agreement; and this Agreement, assuming the due authorization,
      execution and delivery hereof by the other parties hereto, constitutes its
      legal, valid and binding obligation, enforceable against it in accordance
      with its terms, except that (a) the enforceability hereof may be limited
      by bankruptcy, insolvency, moratorium, receivership and other similar laws
      relating to creditors' rights

                                      -65-
<PAGE>

      generally and (b) the remedy of specific performance and injunctive and
      other forms of equitable relief may be subject to equitable defenses and
      to the discretion of the court before which any proceeding therefor may be
      brought.

            (iii) The execution and delivery of this Agreement by it, the
      consummation of any other of the transactions contemplated by this
      Agreement, and the fulfillment of or compliance with the terms hereof are
      in its ordinary course of business and will not (A) result in a material
      breach of any term or provision of its charter or by-laws or (B)
      materially conflict with, result in a material breach, violation or
      acceleration of, or result in a material default under, the terms of any
      other material agreement or instrument to which it is a party or by which
      it may be bound, or (C) constitute a material violation of any statute,
      order or regulation applicable to it of any court, regulatory body,
      administrative agency or governmental body having jurisdiction over it;
      and it is not in breach or violation of any material indenture or other
      material agreement or instrument, or in violation of any statute, order or
      regulation of any court, regulatory body, administrative agency or
      governmental body having jurisdiction over it which breach or violation
      may materially impair its ability to perform or meet any of its
      obligations under this Agreement.

            (iv) No litigation is pending or, to the best of its knowledge,
      threatened, against it that would materially and adversely affect the
      execution, delivery or enforceability of this Agreement or its ability to
      perform any of its other obligations under this Agreement in accordance
      with the terms hereof.

            (v) No consent, approval, authorization or order of any court or
      governmental agency or body is required for its execution, delivery and
      performance of, or compliance with, this Agreement or the consummation of
      the transactions contemplated hereby, or if any such consent, approval,
      authorization or order is required, it has obtained the same.

                                  ARTICLE III
                 ADMINISTRATION AND SERVICING OF MORTGAGE LOANS

   Section 3.01 Master Servicer. The Master Servicer shall supervise, monitor
and oversee the obligation of the Servicers to service and administer their
respective Mortgage Loans in accordance with the terms of the applicable
Servicing Agreement and shall have full power and authority to do any and all
things which it may deem necessary or desirable in connection with such master
servicing and administration. In performing its obligations hereunder, the
Master Servicer shall act in a manner consistent with Accepted Master Servicing
Practices. Furthermore, the Master Servicer shall oversee and consult with each
Servicer as necessary from time-to-time to carry out the Master Servicer's
obligations hereunder, shall receive, review and evaluate all reports,
information and other data provided to the Master Servicer by each Servicer and
shall cause each Servicer to perform and observe the covenants, obligations and
conditions to be performed or observed by such Servicer under the applicable
Servicing Agreement. The Master Servicer shall independently and separately
monitor each Servicer's servicing activities with respect to each related
Mortgage Loan, reconcile the results of such monitoring with such information
provided in the previous sentence on a monthly basis and coordinate corrective
adjustments to the Servicers' and Master Servicer's records, and based on such
reconciled and

                                      -66-
<PAGE>

corrected information, the Master Servicer shall provide such information to the
Securities Administrator as shall be necessary in order for it to prepare the
statements specified in Section 6.04, and prepare any other information and
statements required to be forwarded by the Master Servicer hereunder. The Master
Servicer shall reconcile the results of its monitoring with the actual
remittances of the Servicers to the Master Servicer Collection Account pursuant
to the applicable Servicing Agreements.

      If the Master Servicer and the Securities Administrator are the same
entity, then at any time the Master Servicer is terminated as Master Servicer,
the Securities Administrator shall likewise be removed as securities
administrator.

      The Trustee shall furnish the Servicers and the Master Servicer with any
limited powers of attorney and other documents in form acceptable to it
necessary or appropriate to enable the Servicers and the Master Servicer to
service and administer the related Mortgage Loans and REO Property. The Trustee
shall have no liability with respect to the use of any such limited power of
attorney.

      The Trustee or the Custodian shall provide access to the records and
documentation in possession of the Trustee or the Custodian regarding the
related Mortgage Loans and REO Property and the servicing thereof to the
Certificateholders, the FDIC, and the supervisory agents and examiners of the
FDIC, such access being afforded only upon reasonable prior written request and
during normal business hours at the office of the Trustee or the Custodian;
provided, however, that, unless otherwise required by law, the Trustee or the
Custodian shall not be required to provide access to such records and
documentation if the provision thereof would violate the legal right to privacy
of any Mortgagor. The Trustee or the Custodian shall allow representatives of
the above entities to photocopy any of the records and documentation and shall
provide equipment for that purpose at a charge that covers the Trustee's or the
Custodian's actual costs.

      The Trustee shall execute and deliver to the related Servicer and the
Master Servicer upon request any court pleadings, requests for trustee's sale or
other documents necessary or desirable to (i) the foreclosure or trustee's sale
with respect to a Mortgaged Property; (ii) any legal action brought to obtain
judgment against any Mortgagor on the Mortgage Note or Security Instrument;
(iii) obtain a deficiency judgment against the Mortgagor; or (iv) enforce any
other rights or remedies provided by the Mortgage Note or Security Instrument or
otherwise available at law or equity.

   Section 3.02 REMIC-Related Covenants. For as long as each REMIC shall exist,
the Trustee and the Securities Administrator shall act in accordance herewith to
assure continuing treatment of such REMIC as a REMIC, and the Trustee and the
Securities Administrator shall comply with any directions of the Depositor, the
related Servicer or the Master Servicer to assure such continuing treatment. In
particular, the Trustee shall not (a) sell or permit the sale of all or any
portion of the Mortgage Loans or of any investment of deposits in an Account
unless such sale is as a result of a repurchase of the Mortgage Loans pursuant
to this Agreement or the Trustee has received a REMIC Opinion prepared at the
expense of the Issuing Entity; and (b) other than with respect to a substitution
pursuant to the Mortgage Loan Purchase Agreement or Section 2.04 of

                                      -67-
<PAGE>

this Agreement, as applicable, accept any contribution to any REMIC after the
Startup Day without receipt of a REMIC Opinion.

   Section 3.03 Monitoring of Servicers.

      (a) The Master Servicer shall be responsible for reporting to the Trustee
and the Depositor the compliance by each Servicer with its duties under the
related Servicing Agreement. In the review of each Servicer's activities, the
Master Servicer may rely upon an officer's certificate of the Servicer with
regard to such Servicer's compliance with the terms of its Servicing Agreement.
In the event that the Master Servicer, in its judgment, determines that a
Servicer should be terminated in accordance with its Servicing Agreement, or
that a notice should be sent pursuant to such Servicing Agreement with respect
to the occurrence of an event that, unless cured, would constitute grounds for
such termination, the Master Servicer shall notify the Depositor and the Trustee
thereof and the Master Servicer shall issue such notice or take such other
action as it deems appropriate.

      (b) The Master Servicer, for the benefit of the Trustee and the
Certificateholders, shall enforce the obligations of each Servicer under the
related Servicing Agreement, and shall, in the event that a Servicer fails to
perform its obligations in accordance with the related Servicing Agreement,
subject to the preceding paragraph, terminate the rights and obligations of such
Servicer thereunder and act as servicer of the related Mortgage Loans or, if the
Master Servicer is unwilling or unable to act as a Servicer, the Master Servicer
shall cause the Trustee to enter in to a new Servicing Agreement with a
successor Servicer selected by the Master Servicer that is eligible in
accordance with the criteria specified in this Agreement; provided, however, it
is understood and acknowledged by the parties hereto that there will be a period
of transition (not to exceed 90 days) before the actual servicing functions can
be fully transferred to such successor servicer. In either event, such
enforcement, including, without limitation, the legal prosecution of claims,
termination of the Servicing Agreements and the pursuit of other appropriate
remedies, shall be in such form and carried out to such an extent and at such
time as the Master Servicer, in its good faith business judgment, would require
were it the owner of the related Mortgage Loans. The Master Servicer shall pay
the costs of such enforcement at its own expense subject to Section 3.03(c),
provided that the Master Servicer shall not be required to prosecute or defend
any legal action except to the extent that the Master Servicer shall have
received reasonable indemnity for its costs and expenses in pursuing such
action.

      (c) To the extent that the costs and expenses of the Master Servicer
related to any termination of a Servicer, appointment of a successor Servicer or
the transfer and assumption of servicing by the Master Servicer with respect to
any Servicing Agreement (including, without limitation, (i) all legal costs and
expenses and all due diligence costs and expenses associated with an evaluation
of the potential termination of a Servicer as a result of an event of default by
such Servicer and (ii) all costs and expenses associated with the complete
transfer of servicing, including all servicing files and all servicing data and
the completion, correction or manipulation of such servicing data as may be
required by the successor servicer to correct any errors or insufficiencies in
the servicing data or otherwise to enable the successor service to service the
Mortgage Loans in accordance with the related Servicing Agreement) are not fully
and timely reimbursed by the terminated Servicer, the Master Servicer shall be
entitled to reimbursement of

                                      -68-
<PAGE>

such costs and expenses from the Master Servicer Collection Account pursuant to
Section 4.03(b).

      (d) The Master Servicer shall require each Servicer to comply with the
remittance requirements and other obligations set forth in the related Servicing
Agreement.

      (e) If the Master Servicer acts as Servicer, it will not assume liability
for the representations and warranties of such Servicer, if any, that it
replaces.

   Section 3.04 Fidelity Bond. The Master Servicer, at its expense, shall
maintain in effect a blanket fidelity bond and an errors and omissions insurance
policy, affording coverage with respect to all directors, officers, employees
and other Persons acting on such Master Servicer's behalf, and covering errors
and omissions in the performance of the Master Servicer's obligations hereunder.
The errors and omissions insurance policy and the fidelity bond shall be in such
form and amount generally acceptable for entities serving as master servicers or
trustees.

   Section 3.05 Power to Act; Procedures. The Master Servicer shall master
service the Mortgage Loans and shall have full power and authority, subject to
the REMIC Provisions and the provisions of Article X hereof, to do any and all
things that it may deem necessary or desirable in connection with the master
servicing and administration of the Mortgage Loans, including but not limited to
the power and authority (i) to execute and deliver, on behalf of the
Certificateholders and the Trustee, customary consents or waivers and other
instruments and documents, (ii) to consent to transfers of any Mortgaged
Property and assumptions of the Mortgage Notes and related Mortgages, (iii) to
collect any Insurance Proceeds and Liquidation Proceeds, and (iv) to effectuate
foreclosure or other conversion of the ownership of the Mortgaged Property
securing any Mortgage Loan, in each case, in accordance with the provisions of
this Agreement and the related Servicing Agreement, as applicable; provided,
however, that the Master Servicer shall not (and, consistent with its
responsibilities under Section 3.03, shall not permit any Servicer to) knowingly
or intentionally take any action, or fail to take (or fail to cause to be taken)
any action reasonably within its control and the scope of duties more
specifically set forth herein, that, under the REMIC Provisions, if taken or not
taken, as the case may be, would cause any REMIC created hereunder to fail to
qualify as a REMIC or result in the imposition of a tax upon the Issuing Entity
(including but not limited to the tax on prohibited transactions as defined in
Section 860F(a)(2) of the Code and the tax on contributions to a REMIC set forth
in Section 860G(d) of the Code) unless the Master Servicer has received an
Opinion of Counsel (but not at the expense of the Master Servicer) to the effect
that the contemplated action will not would cause any REMIC created hereunder to
fail to qualify as a REMIC or result in the imposition of a tax upon any REMIC
created hereunder. The Trustee shall furnish the Master Servicer, upon written
request from a Servicing Officer, with any limited powers of attorney (in form
acceptable to the Trustee) empowering the Master Servicer or any Servicer to
execute and deliver instruments of satisfaction or cancellation, or of partial
or full release or discharge, and to foreclose upon or otherwise liquidate
Mortgaged Property, and to appeal, prosecute or defend in any court action
relating to the Mortgage Loans or the Mortgaged Property, in accordance with the
applicable Servicing Agreement and this Agreement, and the Trustee shall execute
and deliver such other documents, as the Master Servicer may request, to enable
the Master Servicer to master service and administer the Mortgage Loans and
carry out its duties hereunder, in each case in accordance with Accepted Master
Servicing Practices (and the

                                      -69-
<PAGE>

Trustee shall have no liability for misuse of any such powers of attorney by the
Master Servicer or any Servicer). If the Master Servicer or the Trustee has been
advised that it is likely that the laws of the state in which action is to be
taken prohibit such action if taken in the name of the Trustee or that the
Trustee would be adversely affected under the "doing business" or tax laws of
such state if such action is taken in its name, the Master Servicer shall join
with the Trustee in the appointment of a co-trustee pursuant to Section 9.11
hereof. In the performance of its duties hereunder, the Master Servicer shall be
an independent contractor and shall not, except in those instances where it is
taking action in the name of the Trustee, be deemed to be the agent of the
Trustee.

   Section 3.06 Due-on-Sale Clauses; Assumption Agreements. To the extent
provided in the applicable Servicing Agreement, to the extent Mortgage Loans
contain enforceable due-on-sale clauses, the Master Servicer shall cause the
Servicers to enforce such clauses in accordance with the applicable Servicing
Agreement. If applicable law prohibits the enforcement of a due-on-sale clause
or such clause is otherwise not enforced in accordance with the applicable
Servicing Agreement, and, as a consequence, a Mortgage Loan is assumed, the
original Mortgagor may be released from liability in accordance with the
applicable Servicing Agreement.

   Section 3.07 Release of Mortgage Files.

      (a) Upon becoming aware of the payment in full of any Mortgage Loan, or
the receipt by any Servicer of a notification that payment in full has been
escrowed in a manner customary for such purposes for payment to
Certificateholders on the next Distribution Date, the Servicers or the Master
Servicer will, if required under the applicable Servicing Agreement, promptly
furnish to the Custodian, on behalf of the Trustee, two copies of a
certification substantially in the form of Exhibit D hereto signed by a
Servicing Officer or in a mutually agreeable electronic format which will, in
lieu of a signature on its face, originate from a Servicing Officer (which
certification shall include a statement to the effect that all amounts received
in connection with such payment that are required to be deposited in the
Protected Account maintained by the applicable Servicer pursuant to its
Servicing Agreement have been or will be so deposited) and shall request that
the Custodian, on behalf of the Trustee, deliver to the applicable Servicer the
related Mortgage File. Upon receipt of such certification and request, the
Custodian, on behalf of the Trustee, shall no later than five Business Days (or,
to the extent that the applicable Servicer notifies the Seller that a document
is not in the Servicer's possession as part of the Servicing File which is
needed for purposes of the Servicer complying with any applicable law, within
such shorter period as may be necessary to enable the Servicer to comply with
such law), release the related Mortgage File to the applicable Servicer and the
Trustee and Custodian shall have no further responsibility with regard to such
Mortgage File. Upon any such payment in full, each Servicer is authorized, to
give, as agent for the Trustee, as the mortgagee under the Mortgage that secured
the Mortgage Loan, an instrument of satisfaction (or assignment of mortgage
without recourse) regarding the Mortgaged Property subject to the Mortgage,
which instrument of satisfaction or assignment, as the case may be, shall be
delivered to the Person or Persons entitled thereto against receipt therefor of
such payment, it being understood and agreed that no expenses incurred in
connection with such instrument of satisfaction or assignment, as the case may
be, shall be chargeable to the Protected Account.

                                      -70-
<PAGE>

      (b) From time to time and as appropriate for the servicing or foreclosure
of any Mortgage Loan and in accordance with the applicable Servicing Agreement,
the Trustee shall execute such documents as requested and as shall be prepared
and furnished to the Trustee by a Servicer or the Master Servicer and as are
necessary to the prosecution of any such proceedings. In connection with the
foregoing, the Custodian, on behalf of the Trustee, shall, upon the request of a
Servicer or the Master Servicer, and delivery to the Custodian, on behalf of the
Trustee, of two copies of a Request for Release signed by a Servicing Officer
substantially in the form of Exhibit D (or in a mutually agreeable electronic
format which will, in lieu of a signature on its face, originate from a
Servicing Officer), release the related Mortgage File held in its possession or
control to the related Servicer or the Master Servicer, as applicable. Such
trust receipt shall obligate the related Servicer or the Master Servicer to
return the Mortgage File to the Custodian on behalf of the Trustee, when the
need therefor by the Servicer or the Master Servicer no longer exists unless the
Mortgage Loan shall be liquidated, in which case, upon receipt of a certificate
of a Servicing Officer similar to that hereinabove specified, the Mortgage File
shall be released by the Custodian, on behalf of the Trustee, to the related
Servicer or the Master Servicer.

   Section 3.08 Documents, Records and Funds in Possession of Master Servicer To
Be Held for Trustee.

      (a) The Master Servicer shall transmit and each Servicer (to the extent
required by the related Servicing Agreement) shall transmit to the Trustee or
Custodian such documents and instruments coming into the possession of the
Master Servicer or such Servicer from time to time as are required by the terms
hereof, or in the case of the Servicers, the applicable Servicing Agreement, to
be delivered to the Trustee or Custodian. Any funds received by the Master
Servicer or by a Servicer in respect of any Mortgage Loan or which otherwise are
collected by the Master Servicer or by a Servicer as Liquidation Proceeds or
Insurance Proceeds in respect of any Mortgage Loan shall be held for the benefit
of the Trustee and the Certificateholders subject to the Master Servicer's right
to retain or withdraw from the Master Servicer Collection Account the Master
Servicing Compensation and other amounts provided in this Agreement, and to the
right of each Servicer to retain its Servicing Fee and other amounts as provided
in the applicable Servicing Agreement. The Master Servicer shall, and (to the
extent provided in the applicable Servicing Agreement) shall cause each Servicer
to, provide access to information and documentation regarding the Mortgage Loans
to the Trustee, its agents and accountants at any time upon reasonable request
and during normal business hours, and to Certificateholders that are savings and
loan associations, banks or insurance companies, the Office of Thrift
Supervision, the FDIC and the supervisory agents and examiners of such Office
and Corporation or examiners of any other federal or state banking or insurance
regulatory authority if so required by applicable regulations of the Office of
Thrift Supervision or other regulatory authority, such access to be afforded
without charge but only upon reasonable request in writing and during normal
business hours at the offices of the Master Servicer designated by it. In
fulfilling such a request, the Master Servicer shall not be responsible for
determining the sufficiency of such information.

      (b) All Mortgage Files and funds collected or held by, or under the
control of, the Master Servicer, in respect of any Mortgage Loans, whether from
the collection of principal and interest payments or from Liquidation Proceeds
or Insurance Proceeds, shall be held by the Master Servicer for and on behalf of
the Trustee and the Certificateholders and shall be and

                                      -71-
<PAGE>

remain the sole and exclusive property of the Trustee; provided, however, that
the Master Servicer and each Servicer shall be entitled to setoff against, and
deduct from, any such funds any amounts that are properly due and payable to the
Master Servicer or such Servicer under this Agreement or the applicable
Servicing Agreement.

   Section 3.09 Standard Hazard Insurance and Flood Insurance Policies.

      (a) For each Mortgage Loan, the Master Servicer shall enforce any
obligation of the Servicers under the related Servicing Agreements to maintain
or cause to be maintained standard fire and casualty insurance and, where
applicable, flood insurance, all in accordance with the provisions of the
related Servicing Agreements. It is understood and agreed that such insurance
shall be with insurers meeting the eligibility requirements set forth in the
applicable Servicing Agreement and that no earthquake or other additional
insurance is to be required of any Mortgagor or to be maintained on property
acquired in respect of a defaulted loan, other than pursuant to such applicable
laws and regulations as shall at any time be in force and as shall require such
additional insurance.

      (b) Pursuant to Sections 4.01 and 4.02, any amounts collected by the
Servicers or the Master Servicer, under any insurance policies (other than
amounts to be applied to the restoration or repair of the property subject to
the related Mortgage or released to the Mortgagor in accordance with the
applicable Servicing Agreement) shall be deposited into the Master Servicer
Collection Account, subject to withdrawal pursuant to Sections 4.02 and 4.03 in
accordance with the terms and conditions of the related Servicing Agreement. Any
cost incurred by the Master Servicer or any Servicer in maintaining any such
insurance if the Mortgagor defaults in its obligation to do so shall be added to
the amount owing under the Mortgage Loan where the terms of the Mortgage Loan so
permit; provided, however, that the addition of any such cost shall not be taken
into account for purposes of calculating the distributions to be made to
Certificateholders and shall be recoverable by the Master Servicer or such
Servicer pursuant to Sections 4.02 and 4.03.

   Section 3.10 Presentment of Claims and Collection of Proceeds. The Master
Servicer shall (to the extent provided in the applicable Servicing Agreement)
cause the related Servicer to, prepare and present on behalf of the Trustee and
the Certificateholders all claims under the Insurance Policies and take such
actions (including the negotiation, settlement, compromise or enforcement of the
insured's claim) as shall be necessary to realize recovery under such policies.
Any proceeds disbursed to the Master Servicer (or disbursed to a Servicer and
remitted to the Master Servicer) in respect of such policies, bonds or contracts
shall be promptly deposited in the Master Servicer Collection Account upon
receipt, except that any amounts realized that are to be applied to the repair
or restoration of the related Mortgaged Property as a condition precedent to the
presentation of claims on the related Mortgage Loan to the insurer under any
applicable Insurance Policy need not be so deposited (or remitted).

   Section 3.11 Maintenance of the Primary Mortgage Insurance Policies.

      (a) The Master Servicer shall not take, or permit any Servicer (to the
extent such action is prohibited under the applicable Servicing Agreement) to
take, any action that would result in noncoverage under any applicable Primary
Mortgage Insurance Policy of any loss

                                      -72-
<PAGE>

which, but for the actions of such Master Servicer or Servicer, would have been
covered thereunder. The Master Servicer shall use its best reasonable efforts to
cause each Servicer (to the extent required under the related Servicing
Agreement) to keep in force and effect (to the extent that the Mortgage Loan
requires the Mortgagor to maintain such insurance), primary mortgage insurance
applicable to each Mortgage Loan in accordance with the provisions of this
Agreement and the related Servicing Agreement, as applicable. The Master
Servicer shall not, and shall not permit any Servicer (to the extent required
under the related Servicing Agreement) to, cancel or refuse to renew any such
Primary Mortgage Insurance Policy that is in effect at the date of the initial
issuance of the Mortgage Note and is required to be kept in force hereunder
except in accordance with the provisions of this Agreement and the related
Servicing Agreement, as applicable.

      (b) The Master Servicer agrees to present, or to cause each Servicer (to
the extent required under the related Servicing Agreement) to present, on behalf
of the Trustee and the Certificateholders, claims to the insurer under any
Primary Mortgage Insurance Policies and, in this regard, to take such reasonable
action as shall be necessary to permit recovery under any Primary Mortgage
Insurance Policies respecting defaulted Mortgage Loans. Pursuant to Section 4.01
and 4.02, any amounts collected by the Master Servicer or any Servicer under any
Primary Mortgage Insurance Policies shall be deposited in the Master Servicer
Collection Account, subject to withdrawal pursuant to Section 4.03.

   Section 3.12 Trustee to Retain Possession of Certain Insurance Policies and
Documents. The Trustee or the Custodian shall retain possession and custody of
the originals (to the extent available) of any Primary Mortgage Insurance
Policies, or certificate of insurance if applicable, and any certificates of
renewal as to the foregoing as may be issued from time to time as contemplated
by this Agreement. Until all amounts distributable in respect of the
Certificates have been distributed in full and the Master Servicer otherwise has
fulfilled its obligations under this Agreement, the Trustee or its Custodian
shall also retain possession and custody of each Mortgage File in accordance
with and subject to the terms and conditions of this Agreement. The Master
Servicer shall promptly deliver or cause to be delivered to the Trustee or the
Custodian upon the execution or receipt thereof the originals of any Primary
Mortgage Insurance Policies, any certificates of renewal, and such other
documents or instruments that constitute portions of the Mortgage File that come
into the possession of the Master Servicer from time to time.

   Section 3.13 Realization Upon Defaulted Mortgage Loans. The Master Servicer
shall cause each Servicer (to the extent required under the related Servicing
Agreement) to foreclose upon, repossess or otherwise comparably convert the
ownership of Mortgaged Properties securing such of the Mortgage Loans as come
into and continue in default and as to which no satisfactory arrangements can be
made for collection of delinquent payments, all in accordance with the terms and
conditions of the applicable Servicing Agreement.

   Section 3.14 Compensation for the Master Servicer. The Master Servicer will
be entitled to all income and gain realized from any investment of funds in the
Master Servicer Collection Account, pursuant to Article IV, for the performance
of its activities hereunder. Servicing compensation in the form of assumption
fees, if any, late payment charges, as collected, if any, or otherwise (but not
including any prepayment premium or penalty) shall be

                                      -73-
<PAGE>

retained by the applicable Servicer and shall not be deposited in the Protected
Account. The Master Servicer shall be required to pay all expenses incurred by
it in connection with its activities hereunder and shall not be entitled to
reimbursement therefor except as provided in this Agreement.

   Section 3.15 REO Property.

      (a) In the event the Issuing Entity acquires ownership of any REO Property
in respect of any related Mortgage Loan, the deed or certificate of sale shall
be issued to the Trustee, or to its nominee, on behalf of the related
Certificateholders. The Master Servicer shall, to the extent provided in the
applicable Servicing Agreement, cause the applicable Servicer to sell, any REO
Property as expeditiously as possible and in accordance with the provisions of
this Agreement and the related Servicing Agreement, as applicable. Pursuant to
its efforts to sell such REO Property, the Master Servicer shall cause the
applicable Servicer to protect and conserve, such REO Property in the manner and
to the extent required by the applicable Servicing Agreement, in accordance with
the REMIC Provisions and in a manner that does not result in a tax on "net
income from foreclosure property" or cause such REO Property to fail to qualify
as "foreclosure property" within the meaning of Section 860G(a)(8) of the Code.

      (b) The Master Servicer shall, to the extent required by the related
Servicing Agreement, cause the applicable Servicer to deposit all funds
collected and received in connection with the operation of any REO Property in
the Protected Account.

      (c) The Master Servicer and the applicable Servicer, upon the final
disposition of any REO Property, shall be entitled to reimbursement for any
related unreimbursed Monthly Advances and other unreimbursed advances as well as
any unpaid Servicing Fees from Liquidation Proceeds received in connection with
the final disposition of such REO Property; provided, that any such unreimbursed
Monthly Advances as well as any unpaid Servicing Fees may be reimbursed or paid,
as the case may be, prior to final disposition, out of any net rental income or
other net amounts derived from such REO Property.

      (d) To the extent provided in the related Servicing Agreement, the
Liquidation Proceeds from the final disposition of the REO Property, net of any
payment to the Master Servicer and the applicable Servicer as provided above
shall be deposited in the Protected Account on or prior to the Determination
Date in the month following receipt thereof and be remitted by wire transfer in
immediately available funds to the Master Servicer for deposit into the related
Master Servicer Collection Account on the next succeeding Servicer Remittance
Date.

   Section 3.16 Annual Statement as to Compliance.

      Not later than March 1 of each calendar year (other than the calendar year
during which the Closing Date occurs), each Servicer shall deliver (or otherwise
make available) and each Servicer shall cause any Servicing Function Participant
engaged by it to deliver to the Master Servicer, the Securities Administrator
and the Depositor, an Officer's Certificate in the form attached hereto as
Exhibit P stating, as to each signatory thereof, that (i) a review of the
activities of such signatory during the preceding calendar year, or portion
thereof, and of the performance

                                      -74-
<PAGE>

of such signatory under the related Servicing Agreement or such other applicable
agreement in the case of a Servicing Function Participant has been made under
such officer's supervision, and (ii) to the best of such officer's knowledge,
based on such review, such signatory has fulfilled all its obligations under
this Agreement, the related Servicing Agreement or such other applicable
agreement in all material respects throughout such year or a portion thereof,
or, if there has been a failure to fulfill any such obligation in any material
respect, specifying each such failure known to such officer and the nature and
status thereof.

      The Master Servicer and the Securities Administrator shall deliver (or
otherwise make available) (and the Trustee, the Master Servicer and Securities
Administrator shall cause any Servicing Function Participant engaged by it to
deliver) to the Depositor and the Securities Administrator on or before March 1
(with a ten-calendar day cure period) of each year, commencing in March 2007, an
Officer's Certificate stating, as to the signer thereof, that (A) a review of
such party's activities during the preceding calendar year or portion thereof
and of such party's performance under this Agreement, or such other applicable
agreement in the case of a Servicing Function Participant, has been made under
such officer's supervision and (B) to the best of such officer's knowledge,
based on such review, such party has fulfilled all its obligations under this
Agreement, or such other applicable agreement in the case of a Servicing
Function Participant, in all material respects throughout such year or portion
thereof, or, if there has been a failure to fulfill any such obligation in any
material respect, specifying each such failure known to such officer and the
nature and status thereof.

      The Master Servicer shall include all annual statements of compliance
received by it from each Servicer with its own annual statement of compliance to
be submitted to the Securities Administrator pursuant to this Section.

      In the event the Master Servicer, the Securities Administrator or any
Servicing Function Participant engaged by any such party or the Trustee is
terminated, assigns its rights and obligations under or resigns pursuant to the
terms of this Agreement, or such other applicable agreement in the case of a
Servicing Function Participant, as the case may be, such party shall provide, an
annual statement of compliance pursuant to this Section 3.16 or to such
applicable agreement, as the case may be, notwithstanding any such termination,
assignment or resignation.

   Section 3.17 Reports on Assessment of Compliance and Attestation.

      (a) Not later than March 1 of each calendar year (other than the calendar
year during which the Closing Date occurs) each Servicer at its own expense,
shall furnish, and shall cause any Servicing Function Participant engaged by it
to furnish (unless in the case of a Subcontractor, such Servicer has notified
the Depositor and the Master Servicer in writing that such compliance statement
is not required for the Subcontractor) to the Master Servicer, the Securities
Administrator and the Depositor an officer's assessment of its compliance with
the Relevant Servicing Criteria during the preceding calendar year as required
by Rules 13a-18 and 15d-18 of the Exchange Act and Item 1122 of Regulation AB
(the "Assessment of Compliance"), which assessment shall contain (A) a statement
by such party of its responsibility for assessing compliance with the Relevant
Servicing Criteria, (B) a statement that such party used the Relevant Servicing
Criteria to assess compliance with the Relevant Servicing Criteria, (C) such
party's assessment of compliance with the Relevant Servicing Criteria as of and
for the fiscal year covered by the Form 10-K required to be filed pursuant to
Section 3.18, including, if there has been any material instance of
noncompliance with the Relevant Servicing Criteria, a discussion of each such
failure and the nature and status thereof, which assessment shall be based on
the activities it performs with respect to asset-backed securities transactions
taken as a whole involving such party that are backed by the same asset type as
the Mortgage Loans, and (D) a statement that a registered public accounting firm
has issued an attestation report on such party's assessment of compliance with
the Relevant Servicing Criteria as of and for such period.

      By March 1 (with a ten-calendar day cure period) of each year, commencing
in March 2007, the Master Servicer, the Securities Administrator and the
Custodian each at its own expense, shall furnish or otherwise make available,
and each such party and the Trustee shall cause any Servicing Function
Participant engaged by it to furnish, each at its own expense, to the Securities
Administrator and the Depositor, a report on an assessment of compliance with
the Relevant Servicing Criteria that contains (A) a statement by such party of
its responsibility for assessing compliance with the Relevant Servicing
Criteria, (B) a statement that such party used the Relevant Servicing Criteria
to assess compliance with the Relevant Servicing Criteria, (C) such party's
assessment of compliance with the Relevant Servicing Criteria as of and for the

                                      -75-
<PAGE>

fiscal year covered by the Form 10-K required to be filed pursuant to Sections
3.18(h), (i), (j) and (k), including, if there has been any material instance of
noncompliance with the Relevant Servicing Criteria, a discussion of each such
failure and the nature and status thereof, and (D) a statement that a registered
public accounting firm has issued an attestation report on such party's
assessment of compliance with the Relevant Servicing Criteria as of and for such
period.

      No later than the end of each fiscal year for the Issuing Entity for which
a 10-K is required to be filed, the Master Servicer, the Custodian and the
Trustee shall each forward to the Securities Administrator and the Depositor the
name of each Servicing Function Participant engaged by it and what Relevant
Servicing Criteria will be addressed in the report on assessment of compliance
prepared by such Servicing Function Participant (provided, however, that the
Master Servicer need not provide such information to the Securities
Administrator so long as the Master Servicer and the Securities Administrator
are the same Person). When the Master Servicer, and the Securities Administrator
(or any Servicing Function Participant engaged by them or the Trustee) submit
their assessments to the Securities Administrator, such parties will also at
such time include the assessment and attestation pursuant to this Section 3.17
of each Servicing Function Participant engaged by it.

      Promptly after receipt of each report on assessment of compliance, (i) the
Depositor shall review each such report and, if applicable, consult with such
Servicer, the Master Servicer, the Securities Administrator and any Servicing
Function Participant engaged by any such party as to the nature of any material
instance of noncompliance with the Relevant Servicing Criteria by such Servicer
by each such party, and (ii) the Securities Administrator shall confirm that the
assessments individually address the Relevant Servicing Criteria for each party
as set forth on Exhibit K or any similar exhibit set forth in each Servicing
Agreement in respect of each Servicer and notify the Depositor of any
exceptions.

      The Master Servicer shall include all annual reports on assessment of
compliance received by it from the Servicers with its own assessment of
compliance to be submitted to the Securities Administrator pursuant to this
Section.

                                      -76-
<PAGE>

      In the event the Master Servicer, the Securities Administrator or any
Servicing Function Participant engaged by any such party or the Trustee is
terminated, assigns its rights and obligations under or resigns pursuant to the
terms of this Agreement, or any other applicable agreement, as the case may be,
such party shall provide, an assessment of compliance pursuant to this Section
3.17, coupled with an attestation as required in this Section 3.17, or such
applicable agreement notwithstanding any such termination, assignment or
resignation.

      (b) Not later than March 1 of each calendar year (other than the calendar
year during which the Closing Date occurs) each Servicer at its own expense,
shall cause, and shall cause any Servicing Function Participant engaged by it to
cause (unless in the case of a Subcontractor, such Servicer has notified the
Depositor and the Master Servicer in writing that such report is not required
for the Subcontractor) a nationally or regionally recognized firm of independent
registered public accountants (who may also render other services to such
Servicer, the Master Servicer or any affiliate thereof) which is a member of the
American Institute of Certified Public Accountants to furnish a report (the
"Accountant's Attestation") to the Master Servicer, the Securities Administrator
and the Depositor to the effect that (i) it has obtained a representation
regarding certain matters from the management of such party, which includes an
assertion that such party has complied with the Relevant Servicing Criteria, and
(ii) on the basis of an examination conducted by such firm in accordance with
standards for attestation engagements issued or adopted by the Public Company
Accounting Oversight Board, it is expressing an opinion as to whether such
party's compliance with the Relevant Servicing Criteria was fairly stated in all
material respects, or it cannot express an overall opinion regarding such
party's assessment of compliance with the Relevant Servicing Criteria. In the
event that an overall opinion cannot be expressed, such registered public
accounting firm shall state in such report why it was unable to express such an
opinion. Such report must be available for general use and not contain
restricted use language. Such Accountant's Attestation shall be in accordance
with Rules 1-02(a)(3) and 2-02(g) of Regulation S-X under the Securities Act and
the Exchange Act.

      By March 1 (with a ten-calendar day cure period) of each year, commencing
in March 2007, the Master Servicer, the Securities Administrator and the
Custodian, each at its own expense, shall cause, and each such party and the
Trustee shall cause any Servicing Function Participant engaged by it to cause,
each at its own expense, a registered public accounting firm (which may also
render other services to the Master Servicer, the Trustee, the Securities
Administrator, or such other Servicing Function Participants, as the case may
be) and that is a member of the American Institute of Certified Public
Accountants to furnish an attestation report to the Securities Administrator and
the Depositor, to the effect that (i) it has obtained a representation regarding
certain matters from the management of such party, which includes an assertion
that such party has complied with the Relevant Servicing Criteria, and (ii) on
the basis of an examination conducted by such firm in accordance with standards
for attestation engagements issued or adopted by the Public Company Accounting
Oversight Board, it is expressing an opinion as to whether such party's
compliance with the Relevant Servicing Criteria was fairly stated in all
material respects, or it cannot express an overall opinion regarding such
party's assessment of compliance with the Relevant Servicing Criteria. In the
event that an overall opinion cannot be expressed, such registered public
accounting firm shall state in such report why it was unable to express such an
opinion. Such report must be available for general use and not contain
restricted use language.

                                      -77-
<PAGE>

      (c) Promptly after receipt of each assessment of compliance and
attestation report, the Securities Administrator shall confirm that each
assessment submitted pursuant to Section 3.17(a) is coupled with an attestation
meeting the requirements of Section 3.17(b) and notify the Depositor of any
exceptions.

      The Master Servicer shall include each such attestation furnished to it by
the Servicers with its own attestation to be submitted to the Securities
Administrator pursuant to this Section.

      In the event the Master Servicer, the Securities Administrator, the
Custodian, any Servicer or any Servicing Function Participant engaged by any
such party, is terminated, assigns its rights and duties under, or resigns
pursuant to the terms of, this Agreement, or any applicable Custodial Agreement,
Servicing Agreement or sub-servicing agreement, as the case may be, such party
shall cause a registered public accounting firm to provide an attestation
pursuant to this Section 3.17, or such other applicable agreement,
notwithstanding any such termination, assignment or resignation.

   Section 3.18 Periodic Filings.

      (a) Within four (4) Business Days after the occurrence of an event
requiring disclosure on Form 8-K (each such event, a "Reportable Event"), and if
requested by the Depositor, the Securities Administrator shall prepare and file
on behalf of the Issuing Entity a Form 8-K, as required by the Exchange Act,
provided that the Depositor shall file the initial Form 8-K in connection with
the issuance of the Certificates. Any disclosure or information related to a
Reportable Event or that is otherwise required to be included on Form 8-K (other
than the initial Form 8-K) ("Form 8-K Disclosure Information") shall be reported
by the parties set forth on Exhibit Q-3 to the Depositor and the Securities
Administrator and directed and approved by the Depositor, and the Securities
Administrator will have no duty or liability for any failure hereunder to
determine or prepare any Form 8-K Disclosure Information or any Form 8-K except
as set forth in the next paragraph.

      (b) For so long as the Issuing Entity is subject to the reporting
requirements of the Exchange Act, following the occurrence of a Reportable Event
(A) each party listed on Exhibit Q-3 hereto shall use commercially reasonable
best efforts to provide immediate notice to the Master Servicer, the Securities
Administrator and the Depositor, by fax and by phone or by e-mail and by phone,
(B) each such party shall be required to provide to the Securities Administrator
and the Depositor, to the extent known, in EDGAR-compatible format or in such
other format as agreed upon by the Securities Administrator and such party, the
form and substance of any Form 8-K Disclosure Information if applicable,
together with the form set forth on Exhibit O (the "Additional Disclosure
Notification") by the close of business New York City time on the 2nd Business
Day following the occurrence of such Reportable Event and (C) the Depositor,
shall approve, as to form and substance, or disapprove, as the case may be, the
inclusion of the Form 8-K Disclosure Information on Form 8-K. The Securities
Administrator has no duty under this Agreement to monitor or enforce the
performance by the parties listed on Exhibit Q-3 of their duties under this
paragraph or proactively solicit or procure from such parties any Form 8-K
Disclosure Information. The Depositor will be responsible for any reasonable
fees and expenses assessed or incurred by the Securities Administrator in
connection with including any Form 8-K Disclosure Information on Form 8-K
pursuant to this paragraph.

                                      -78-
<PAGE>

      (c) After preparing the Form 8-K, the Securities Administrator shall, upon
request, forward electronically a copy of the Form 8-K to the Depositor.
Promptly, but no later than the close of business on the third Business Day
after the Reportable Event, the Depositor shall notify the Securities
Administrator in writing (which may be furnished electronically) of any changes
to or approval of such Form 8-K. In the absence of receipt of any written
changes or approval, or if the Depositor does not request a copy of a Form 8-K,
the Securities Administrator shall be entitled to assume that such Form 8-K is
in final form and the Securities Administrator may proceed with the process for
execution and filing of the Form 8-K. A duly authorized representative of the
Master Servicer shall sign each Form 8-K. If a Form 8-K cannot be filed on time
or if a previously filed Form 8-K needs to be amended, the Securities
Administrator will follow the procedures set forth in Section 3.18(n).

      (d) Promptly (but no later than one Business Day) after filing with the
Commission, the Securities Administrator will make available on its internet
website a final executed copy of each Form 8-K prepared and filed by the
Securities Administrator. The parties to this Agreement acknowledge that the
performance by the Master Servicer and the Securities Administrator of its
duties under this Section 3.18 related to the timely preparation, execution and
filing of Form 8-K is contingent upon the other parties hereto strictly
observing all applicable deadlines in the performance of their duties under this
Section 3.18. The Depositor acknowledges that the performance by the Master
Servicer and the Securities Administrator of its duties under this Section 3.18
related to the timely preparation, execution and filing of Form 8-K is also
contingent upon the Servicers, the Custodian and any Servicing Function
Participant strictly observing deadlines no later than those set forth in this
paragraph that are applicable to the parties to this Agreement in the delivery
to the Securities Administrator of any necessary Form 8-K Disclosure Information
pursuant to the related Servicing Agreements, the Custodial Agreement or any
other applicable agreement. Neither the Master Servicer nor the Securities
Administrator shall have any liability for any loss, expense, damage or claim
arising out of or with respect to any failure to properly prepare, execute
and/or timely file such Form 8-K, where such failure results from the Securities
Administrator's inability or failure to obtain or receive, on a timely basis,
any information from any other party hereto or any Servicer, Custodian or
Servicing Function Participant needed to prepare, arrange for execution or file
such Form 8-K.

      (e) Within fifteen (15) days after each Distribution Date (subject to
permitted extensions under the Exchange Act), the Securities Administrator
shall, on behalf of the Issuing Entity and in accordance with industry
standards, prepare and file with the Commission via the Electronic Data
Gathering and Retrieval System (EDGAR), a Form 10-D with a copy of the Monthly
Statement for such Distribution Date as an exhibit thereto. Any disclosure in
addition to the Monthly Statement that is required to be included on Form 10-D
("Additional Form 10-D Disclosure") shall be reported by the parties set forth
on Exhibit Q-1 to the Depositor and the Securities Administrator and directed
and approved by the Depositor pursuant to the following paragraph, and the
Securities Administrator will have no duty or liability for any failure
hereunder to determine or prepare any Additional Form 10-D Disclosure except as
set forth in the next paragraph.

      (f) As set forth in Exhibit Q-1 hereto, for so long as the Issuing Entity
is subject to the reporting requirements of the Exchange Act, within five (5)
calendar days after the related Distribution Date (i) each party listed on
Exhibit Q-1 hereto shall be required to provide to the

                                      -79-
<PAGE>

Depositor and the Securities Administrator, to the extent known, in
EDGAR-compatible format or in such other format as agreed upon by the Securities
Administrator and such party, the form and substance of any Additional Form 10-D
Disclosure if applicable together with an Additional Disclosure Notification,
and (ii) the Depositor will approve, as to form and substance, or disapprove, as
the case may be, the inclusion of the Additional Form 10-D Disclosure on Form
10-D. The Securities Administrator has no duty under this Agreement to monitor
or enforce the performance by the parties listed on Exhibit Q-1 of their duties
under this paragraph or proactively solicit or procure from such parties any
Additional Form 10-D Disclosure Information. The Depositor will be responsible
for any reasonable fees and expenses incurred by the Securities Administrator in
connection with including any Additional Form 10-D Disclosure on Form 10-D
pursuant to this paragraph.

      (g) After preparing the Form 10-D, the Securities Administrator shall,
upon request, forward electronically a copy of the Form 10-D to the Depositor
(provided that such Form 10-D includes any Additional Form 10-D Disclosure).
Within two Business Days after receipt of such copy, but no later than the 12th
calendar day after the Distribution Date, the Depositor shall notify the
Securities Administrator in writing (which may be furnished electronically) of
any changes to or approval of such Form 10-D. In the absence of receipt of any
written changes or approval, or if the Depositor does not request a copy of a
Form 10-D, the Securities Administrator shall be entitled to assume that such
Form 10-D is in final form and the Securities Administrator may proceed with the
process for execution and filing of the Form 10-D. A duly authorized
representative of the Master Servicer shall sign each Form 10-D. If a Form 10-D
cannot be filed on time or if a previously filed Form 10-D needs to be amended,
the Securities Administrator will follow the procedures set forth in Section
3.18(n). Promptly (but not later than one Business Day) after filing with the
Commission, the Securities Administrator will make available on its internet
website a final executed copy of each Form 10-D prepared and filed by the
Securities Administrator. Form 10-D requires the registrant to indicate (by
checking "yes" or "no") that it "(1) has filed all reports required to be filed
by Section 13 or 15(d) of the Exchange Act during the preceding 12 months (or
for such shorter period that the registrant was required to file such reports),
and (2) has been subject to such filing requirements for the past 90 days." The
Depositor hereby represents to the Securities Administrator that the Depositor
has filed all such required reports during the preceding 12 months and that it
has been subject to such filing requirement for the past 90 days. The Depositor
shall notify the Securities Administrator in writing, no later than the fifth
calendar day after the related Distribution Date with respect to the filing of a
report on Form 10-D, if the answer to the questions should be "no." The
Securities Administrator shall be entitled to rely on such representations in
preparing, executing and/or filing any such Form 10-D. The parties to this
Agreement acknowledge that the performance by the Master Servicer and the
Securities Administrator of its respective duties under this Section 3.18
related to the timely preparation, execution and filing of Form 10-D is
contingent upon the other parties hereto strictly observing all applicable
deadlines in the performance of their duties under this Section 3.18. The
Depositor acknowledges that the performance by the Master Servicer and the
Securities Administrator of its duties under this Section 3.18 related to the
timely preparation, execution and filing of Form 10-D is also contingent upon
the Servicers, the Custodian and any Servicing Function Participant strictly
observing deadlines no later than those set forth in this paragraph that are
applicable to the parties to this Agreement in the delivery to the Securities
Administrator of any necessary Additional Form 10-D Disclosure pursuant to the
related Servicing Agreements, the Custodial Agreement or any other applicable
agreement.

                                      -80-
<PAGE>

Neither the Master Servicer nor the Securities Administrator will have any
liability for any loss, expense, damage or claim arising out of or with respect
to any failure to properly prepare, execute and/or timely file such Form 10-D
resulting from the Securities Administrator's inability or failure to obtain or
receive any information needed to prepare, arrange for execution or file such
Form 10-D on a timely basis.

      (h) On or prior to the 90th calendar day after the end of the fiscal year
for the Issuing Entity or such earlier date as may be required by the Exchange
Act (the "10-K Filing Deadline") (it being understood that the fiscal year for
the Issuing Entity ends on December 31st of each year) commencing in March 2007,
the Securities Administrator shall, on behalf of the Issuing Entity and in
accordance with industry standards, prepare and file with the Commission via
EDGAR a Form 10-K with respect to the Issuing Entity. Such Form 10-K shall
include the following items, in each case, as applicable, to the extent they
have been delivered to the Securities Administrator within the applicable time
frames set forth in this Agreement, the related Servicing Agreements and
Custodial Agreement: (i) an annual compliance statement for the Master Servicer,
each Servicer, the Securities Administrator and any Servicing Function
Participant engaged by any such party or the Trustee (together with the
Custodian, each a "Reporting Servicer"), as described in Section 3.16 of this
Agreement, the related Servicing Agreement and the Custodial Agreement;
provided, however, that the Securities Administrator, at its discretion, may
omit from the Form 10-K any annual compliance statement that is not required to
be filed with such Form 10-K pursuant to Regulation AB; (ii)(A) the annual
reports on assessment of compliance with Servicing Criteria for each Reporting
Servicer (unless the Depositor has determined that such compliance statement is
not required by Regulation AB), as described in Section 3.17 of this Agreement,
the related Servicing Agreement and the Custodial Agreement, and (B) if any
Reporting Servicer's report on assessment of compliance with Servicing Criteria
described in Section 3.17 identifies any material instance of noncompliance,
disclosure identifying such instance of noncompliance, or if any Reporting
Servicer's report on assessment of compliance with Servicing Criteria described
in Section 3.17 of this Agreement is not included as an exhibit to such Form
10-K, disclosure that such report is not included and an explanation why such
report is not included; provided, however, that the Securities Administrator, at
its discretion, may omit from the Form 10-K any assessment of compliance or
attestation report described in clause (iii) below that is not required to be
filed with such Form 10-K pursuant to Regulation AB; (iii)(A) the registered
public accounting firm attestation report for each Reporting Servicer, as
described in Section 3.17 of this Agreement, the related Servicing Agreement and
the Custodial Agreement, and (B) if any registered public accounting firm
attestation report described under Section 3.17 of this Agreement identifies any
material instance of noncompliance, disclosure identifying such instance of
noncompliance, or if any such registered public accounting firm attestation
report is not included as an exhibit to such Form 10-K, disclosure that such
report is not included and an explanation why such report is not included, and
(iv) a Sarbanes-Oxley Certification in the form attached hereto as Exhibit L,
executed by the senior officer in charge of securitizations of the Master
Servicer. Any disclosure or information in addition to (i) through (iv) above
that is required to be included on Form 10-K ("Additional Form 10-K Disclosure")
shall be reported by the parties as set forth in Exhibit Q-2 to the Depositor
and the Securities Administrator and directed and approved by the Depositor
pursuant to the following paragraph and the Securities Administrator will have
no duty or liability for any failure hereunder to determine or prepare any
Additional Form 10-K Disclosure except or set forth in the next paragraph.

                                      -81-
<PAGE>

      (i) As set forth in Exhibit Q-2 hereto, no later than March 1 (with a ten
calendar day cure period) of each year that the Issuing Entity is subject to the
Exchange Act reporting requirements, commencing in March 2007, (i) the parties
listed on Exhibit Q-2 hereto shall be required to provide to the Depositor and
the Securities Administrator, to the extent known, in EDGAR-compatible format or
in such other format as agreed upon by the Securities Administrator and such
party, the form and substance of any Additional Form 10-K Disclosure, if
applicable together with an Additional Disclosure Notification, and (ii) the
Depositor will approve, as to form and substance, or disapprove, as the case may
be, the inclusion of the Additional Form 10-K Disclosure and shall forward such
Additional Form 10-K Disclosure. The Securities Administrator has no duty under
this Agreement to monitor or enforce the performance by the parties listed on
Exhibit Q-2 of their duties under this paragraph or proactively solicit or
procure from such parties any Additional Form 10-K Disclosure Information. The
Depositor will be responsible for any reasonable fees and expenses incurred by
the Securities Administrator in connection with including any Additional Form
10-K Disclosure on Form 10-K pursuant to this paragraph.

      (j) After preparing the Form 10-K, the Securities Administrator shall,
upon request, forward electronically a copy of the Form 10-K to the Depositor.
Within three Business Days after receipt of such copy, but no later than March
25th, the Depositor shall notify the Securities Administrator in writing (which
may be furnished electronically) of any changes to or approval of such Form
10-K. In the absence of receipt of any written changes or approval, or if the
Depositor does not request a copy of a Form 10-K, the Securities Administrator
shall be entitled to assume that such Form 10-K is in final form and the
Securities Administrator may proceed with the process for execution and filing
of the Form 10-K. A senior officer of the Master Servicer in charge of the
master servicing function shall sign the Form 10-K. If a Form 10-K cannot be
filed on time or if a previously filed Form 10-K needs to be amended, the
Securities Administrator will follow the procedures set forth in Section
3.18(n). Promptly (but no later than one Business Day) after filing with the
Commission, the Securities Administrator will make available on its internet
website a final executed copy of each Form 10-K prepared and filed by the
Securities Administrator. Form 10-K requires the registrant to indicate (by
checking "yes" or "no") that it "(1) has filed all reports required to be filed
by Section 13 or 15(d) of the Exchange Act during the preceding 12 months (or
for such shorter period that the registrant was required to file such reports),
and (2) has been subject to such filing requirements for the past 90 days." The
Depositor hereby represents to the Securities Administrator that the Depositor
has filed all such required reports during the preceding 12 months and that it
has been subject to such filing requirement for the past 90 days. The Depositor
shall notify the Securities Administrator in writing, no later than the 15th
calendar day of March in any year in which the Trust is subject to the reporting
requirements of the Exchange Act, if the answer to the questions should be "no."
The Securities Administrator shall be entitled to rely on such representations
in preparing, executing and/or filing any such Form 10-D. The parties to this
Agreement acknowledge that the performance by the Master Servicer and the
Securities Administrator of its duties under this Section 3.18 related to the
timely preparation, execution and filing of Form 10-K is contingent upon such
parties (and any Servicing Function Participant) strictly observing all
applicable deadlines in the performance of their duties under this Section 3.18,
Section 3.16 and Section 3.17. The Depositor acknowledges that the performance
by the Master Servicer and the Securities Administrator of its duties under this
Section 3.18 related to the timely preparation, execution and filing of Form
10-K is also contingent upon the Servicers, the Custodian and any

                                      -82-
<PAGE>

Servicing Function Participant strictly observing deadlines no later than those
set forth in this paragraph that are applicable to the parties to this Agreement
in the delivery to the Securities Administrator of any necessary Additional Form
10-K Disclosure, any annual statement of compliance and any assessment of
compliance and attestation pursuant to the related Servicing Agreement, the
Custodial Agreement or any other applicable agreement. Neither the Master
Servicer nor the Securities Administrator shall have any liability for any loss,
expense, damage or claim arising out of or with respect to any failure to
properly prepare, execute and/or timely file such Form 10-K resulting from the
Securities Administrator's inability or failure to obtain or receive any
information from any other party hereto or any Servicer, Custodian or Servicing
Function Participant needed to prepare, execute or file such Form 10-K.

      (k) Each Form 10-K shall include a Sarbanes-Oxley Certification, which
shall be in the form attached hereto as Exhibit L. Each Servicer shall sign and
provide, and each of the Servicers, the Master Servicer and the Securities
Administrator shall cause any Servicing Function Participant engaged by it to
sign and provide, to the person who signs the Sarbanes-Oxley Certification (the
"Certifying Person") by March 1 (with a ten day cure period) of each year in
which the Issuing Entity is subject to the reporting requirements of the
Exchange Act and otherwise within a reasonable period of time upon request, a
certification (a "Back-Up Certification") (in the form attached hereto as
Exhibit M) upon which the Certifying Person, the entity for which the Certifying
Person acts as an officer and such entity's officers, directors and affiliates
(collectively, with the Certifying Person, the "Certification Parties") can
reasonably rely. The senior officer of the Master Servicer in charge of the
master servicing function shall serve as the Certifying Person on behalf of the
Issuing Entity. Such officer of the Certifying Person can be contacted by e-mail
at cts.sec.notifications@wellsfargo.com or by facsimile at 410-715-2380. In the
event any such party or Servicing Function Participant engaged by any such party
is terminated or resigns pursuant to the terms of this Agreement, or any other
applicable agreement, as the case may be, such party shall provide a Back-Up
Certification to the Master Servicer pursuant to this Section 3.18 with respect
to the period of time it was subject to this Agreement or any other applicable
agreement, as the case may be. Notwithstanding the foregoing, (i) the Master
Servicer and the Securities Administrator shall not be required to deliver a
Back-Up Certification to each other if both are the same Person and the Master
Servicer is the Certifying Person and (ii) the Master Servicer shall not be
obligated to sign the Sarbanes-Oxley Certification in the event that it does not
receive any Back-Up Certification required to be furnished to it pursuant to
this section or any Servicing Agreement or Custodial Agreement.

      (l) The Securities Administrator shall have no responsibility to file any
items with the Commission other than those specified in this section and the
Master Servicer shall execute any and all Form 10-Ds, 8-Ks and 10-Ks required
hereunder.

      (m) On or prior to January 30 of the first year in which the Securities
Administrator is able to do so under applicable law, the Securities
Administrator shall prepare and file a Form 15 Suspension Notification relating
to the automatic suspension of reporting in respect of the Issuing Entity under
the Exchange Act.

      (n) In the event that the Securities Administrator is unable to timely
file with the Commission all or any required portion of any Form 8-K, 10-D or
10-K required to be filed by this Agreement because required disclosure
information was either not delivered to it or

                                      -83-
<PAGE>

delivered to it after the delivery deadlines set forth in this Agreement or for
any other reason, the Securities Administrator will promptly notify
electronically the Depositor of such inability to make a timely filing with the
Commission. In the case of Form 10-D and 10-K, the parties to this Agreement
will cooperate to prepare and file a Form 12b-25 and a 10-D/A and 10K/A, as
applicable, pursuant to Rule 12b-25 of the Exchange Act. In the case of Form
8-K, the Securities Administrator will, upon receipt of all required Form 8-K
Disclosure Information and upon the approval and direction of the Depositor,
include such disclosure information on the next succeeding Form 10-D to be filed
for the Issuing Entity. In the event that any previously filed Form 8-K, 10-D or
10-K needs to be amended, in connection with any Additional Form 10-D Disclosure
(other than, in the case of Form 10-D, for the purpose of restating any Monthly
Statement), Additional Form 10-K Disclosure or Form 8-K Disclosure Information,
the Securities Administrator will electronically notify the Depositor and such
other parties to the transaction as are affected by such amendment, and such
parties will cooperate to prepare any necessary 8-K/A, 10-D/A or 10-K/A. Any
Form 15, Form 12b-25 or any amendment to Form 8-K, 10-D or 10-K shall be signed
by duly authorized representative or a senior officer in charge of master
servicing, as applicable, of the Master Servicer. The parties to this Agreement
acknowledge that the performance by the Master Servicer of its duties under this
Section 3.18 related to the timely preparation, execution and filing of Form 15,
a Form 12b-25 or any amendment to Form 8-K, 10-D or 10-K is contingent upon each
such party performing its duties under this Section. Neither the Master Servicer
nor the Securities Administrator shall have any liability for any loss, expense,
damage or claim arising out of or with respect to any failure to properly
prepare, execute and/or timely file any such Form 15, Form 12b-25 or any
amendments to Forms 8-K, 10-D or 10-K, where such failure results from the
Securities Administrator's inability or failure to receive, on a timely basis,
any information from any other party hereto or any Servicer, any Custodian or
any Servicing Function Participant needed to prepare, arrange for execution or
file such Form 15, Form 12b-25 or any amendments to Forms 8-K, 10-D or 10-K.

      (o) The Depositor and the Securities Administrator agree to use their good
faith efforts to cooperate in complying with the requirements of this Section
3.18.

      (p) Each of the parties agrees to provide to the Securities Administrator
such additional information related to such party as the Securities
Administrator may reasonably request, including evidence of the authorization of
the person signing any certificate or statement, financial information and
reports, and such other information related to such party or its performance
hereunder.

      (q) Any notice or notification required to be delivered by the Securities
Administrator or Master Servicer to the Depositor pursuant to this Section 3.18,
may be delivered via facsimile to (212) 449-2700, via email to paul_park@ml.com
or telephonically by calling Paul Park at (212) 449-6380.

   Section 3.19 Compliance with Regulation AB. Each of the parties hereto
acknowledges and agrees that the purpose of Sections 3.16, 3.17 and 3.18 is to
facilitate compliance by the Depositor with the provisions of Regulation AB, as
such may be amended or clarified from time to time. Therefore, each of the
parties agrees that the parties' obligations hereunder will be supplemented and
modified as necessary to be consistent with any such amendments, interpretive
advice or guidance, convention or consensus among active participants

                                      -84-
<PAGE>

in the asset-backed securities markets, advice of counsel, or otherwise in
respect of the requirements of Regulation AB and the parties shall comply with
requests made by the Depositor for delivery of additional or different
information as the Depositor may determine in good faith is necessary to comply
with the provisions of Regulation AB. Any such supplementation or modification
shall be made in accordance with Section 11.02 without the consent of the
Certificateholders, and may result in a change in the reports filed by the
Securities Administrator on behalf of the Issuing Entity under the Exchange Act.

                                   ARTICLE IV
                                    ACCOUNTS

   Section 4.01 Protected Accounts.

      (a) The Master Servicer shall enforce the obligation of each Servicer to
establish and maintain a Protected Account in accordance with the applicable
Servicing Agreement, with records to be kept with respect thereto on a Mortgage
Loan by Mortgage Loan basis, into which accounts shall be deposited within two
Business Days (or as of such other time specified in the related Servicing
Agreement) of receipt all collections of principal and interest on any Mortgage
Loan and with respect to any REO Property received by a Servicer, including
Principal Prepayments, Insurance Proceeds, Liquidation Proceeds, Subsequent
Recoveries and advances made from the Servicer's own funds (less servicing
compensation as permitted by the applicable Servicing Agreement in the case of
the Servicer) and all other amounts to be deposited in the Protected Account.
The Servicer is hereby authorized to make withdrawals from and deposits to the
related Protected Account for purposes required or permitted by this Agreement.
To the extent provided in the related Servicing Agreement, the Protected Account
shall be held in a Designated Depository Institution and segregated on the books
of such institution in the name of the Trustee for the benefit of
Certificateholders.

      (b) To the extent provided in the related Servicing Agreement, amounts on
deposit in a Protected Account may be invested in Permitted Investments in the
name of the Trustee for the benefit of Certificateholders and, except as
provided in the preceding paragraph, not commingled with any other funds, such
Permitted Investments to mature, or to be subject to redemption or withdrawal,
no later than the date on which such funds are required to be withdrawn for
deposit in the Master Servicer Collection Account, and shall be held until
required for such deposit. The income earned from Permitted Investments made
pursuant to this Section 4.01 shall be paid to the related Servicer under the
applicable Servicing Agreement, and the risk of loss of moneys required to be
distributed to the Certificateholders resulting from such investments shall be
borne by and be the risk of the related Servicer, as set forth in the applicable
Servicing Agreement. The related Servicer (to the extent provided in the related
Servicing Agreement) shall deposit the amount of any such loss in the Protected
Account within two Business Days of receipt of notification of such loss but not
later than the second Business Day prior to the Distribution Date on which the
moneys so invested are required to be distributed to the Certificateholders.

      (c) To the extent provided in the related Servicing Agreement and subject
to this Article IV, on or before each Servicer Remittance Date, the related
Servicer shall withdraw or shall cause to be withdrawn from the Protected
Accounts and shall immediately deposit or cause to be deposited in the Master
Servicer Collection Account amounts representing the following

                                      -85-
<PAGE>

collections and payments (other than with respect to principal of or interest on
the Mortgage Loans due on or before the Cut-off Date) with respect to each Loan
Group:

            (i) Monthly Payments on the Mortgage Loans received or any related
      portion thereof advanced by such Servicer pursuant to the related
      Servicing Agreement which were due on or before the related Due Date, net
      of the amount thereof comprising the Servicing Fees;

            (ii) Principal Prepayments in Full and any Liquidation Proceeds
      received by such Servicer with respect to such Mortgage Loans in the
      related Prepayment Period, with interest to the date of prepayment or
      liquidation, net of the amount thereof comprising the Servicing Fees;

            (iii) Curtailments received by such Servicer for such Mortgage Loans
      in the related Prepayment Period; and

            (iv) Any amount to be used as a Monthly Advance.

      (d) Withdrawals by the Master Servicer may be made from an Account only to
make remittances as provided in Section 4.01(c), 4.02 and 4.03; to reimburse the
Master Servicer or a Servicer for Monthly Advances which have been recovered by
subsequent collection from the related Mortgagor; to remove amounts deposited in
error; to remove fees, charges or other such amounts deposited on a temporary
basis; or to clear and terminate the account at the termination of this
Agreement in accordance with Section 10.01. As provided in Sections 4.01(c) and
4.02(b) certain amounts otherwise due to the Servicers may be retained by them
as set forth in the related Servicing Agreements and need not be deposited in
the Master Servicer Collection Account.

   Section 4.02 Master Servicer Collection Account.

      (a) The Master Servicer shall establish and maintain in the name of the
Trustee, for the benefit of the Certificateholders, the Master Servicer
Collection Account as a segregated trust account or accounts. The Master
Servicer Collection Account may be a sub-account of the Distribution Account.
The Master Servicer will deposit in the Master Servicer Collection Account as
identified by the Master Servicer and as received by the Master Servicer, the
following amounts:

            (i) Any amounts withdrawn from a Protected Account or other
      permitted account;

            (ii) Any Monthly Advance and any Compensating Interest Payments;

            (iii) Any Insurance Proceeds, Liquidation Proceeds or Subsequent
      Recoveries received by or on behalf of the Master Servicer or which were
      not deposited in a Protected Account or other permitted account;

            (iv) The repurchase price with respect to any Mortgage Loans
      repurchased and all proceeds of any Mortgage Loans or property acquired in
      connection with the optional termination of the trust;

                                      -86-
<PAGE>

            (v) Any amounts required to be deposited with respect to losses on
      investments of deposits in an Account; and

            (vi) Any other amounts received by or on behalf of the Master
      Servicer and required to be deposited in the Master Servicer Collection
      Account pursuant to this Agreement.

      (b) All amounts deposited to the Master Servicer Collection Account shall
be held by the Master Servicer in the name of the Trustee in trust for the
benefit of the Certificateholders in accordance with the terms and provisions of
this Agreement. The requirements for crediting the Master Servicer Collection
Account or the Distribution Account shall be exclusive, it being understood and
agreed that, without limiting the generality of the foregoing, payments in the
nature of (i) prepayment or late payment charges or assumption, tax service,
statement account or payoff, substitution, satisfaction, release and other like
fees and charges and (ii) the items enumerated in Subsections 4.05(a)(i), (ii),
(iii), (iv), (vi), (vii), (viii), (ix), (xi) and (xii) with respect to the
Securities Administrator, need not be credited by the Master Servicer or the
related Servicer to the Distribution Account or the Master Servicer Collection
Account, as applicable. In the event that the Master Servicer shall deposit or
cause to be deposited to the Distribution Account any amount not required to be
credited thereto, the Securities Administrator, upon receipt of a written
request therefor signed by a Servicing Officer of the Master Servicer, shall
promptly transfer such amount to the Master Servicer from the Distribution
Account, any provision herein to the contrary notwithstanding.

      (c) The amount at any time credited to the Master Servicer Collection
Account shall be invested, in the name of the Trustee, or its nominee, for the
benefit of the Certificateholders, in Permitted Investments as directed by
Master Servicer. All Permitted Investments shall mature or be subject to
redemption or withdrawal on or before, and shall be held until, the next
succeeding Distribution Account Deposit Date. Any and all investment earnings on
amounts on deposit in the Master Servicer Collection Account from time to time
shall be for the account of the Master Servicer. The Master Servicer from time
to time shall be permitted to withdraw or receive distribution of any and all
investment earnings from the Master Servicer Collection Account. The risk of
loss of moneys required to be distributed to the Certificateholders resulting
from such investments shall be borne by and be the risk of the Master Servicer.
The Master Servicer shall deposit the amount of any such loss in the Master
Servicer Collection Account within two Business Days of receipt of notification
of such loss but not later than the second Business Day prior to the
Distribution Date on which the moneys so invested are required to be distributed
to the Certificateholders.

                                      -87-
<PAGE>

   Section 4.03 Permitted Withdrawals and Transfers from the Master Servicer
Collection Account.

      (a) The Master Servicer will, from time to time on demand of the Master
Servicer, the Trustee or the Securities Administrator, make or cause to be made
such withdrawals or transfers from the Master Servicer Collection Account as the
Master Servicer has designated for such transfer or withdrawal pursuant to the
Servicing Agreements. The Master Servicer may clear and terminate the Master
Servicer Collection Account pursuant to Section 10.01 and remove amounts from
time to time deposited in error.

      (b) On an ongoing basis, the Master Servicer shall withdraw from the
Master Servicer Collection Account (i) any expenses recoverable by the Trustee,
the Master Servicer or the Securities Administrator pursuant to this Agreement,
including but not limited to Sections 2.01(b), 3.03, 7.04 and 9.05 and (ii) any
amounts payable to the Master Servicer as set forth in Section 3.14.

      (c) In addition, on or before each Distribution Account Deposit Date, the
Master Servicer shall deposit in the Distribution Account (or remit to the
Securities Administrator for deposit therein) any Monthly Advances required to
be made by the Master Servicer with respect to the Mortgage Loans.

      (d) No later than 3:00 p.m. New York time on each Distribution Account
Deposit Date, the Master Servicer will transfer all Available Funds on deposit
in the Master Servicer Collection Account with respect to the related
Distribution Date to the Securities Administrator for deposit in the
Distribution Account.

   Section 4.04 Distribution Account.

      (a) The Securities Administrator shall establish and maintain in the name
of the Trustee, for the benefit of the Certificateholders, the Distribution
Account as a segregated trust account or accounts.

      (b) All amounts deposited to the Distribution Account shall be held by the
Securities Administrator in the name of the Trustee in trust for the benefit of
the Certificateholders in accordance with the terms and provisions of this
Agreement.

      (c) The Distribution Account shall constitute a trust account of the Trust
Fund segregated on the books of the Securities Administrator and held by the
Securities Administrator in trust in its Corporate Trust Office, and the
Distribution Account and the funds deposited therein shall not be subject to,
and shall be protected to the maximum extent permitted by applicable law from,
all claims, liens, and encumbrances of any creditors or depositors of the
Securities Administrator, the Trustee or the Master Servicer (whether made
directly, or indirectly through a liquidator or receiver of the Securities
Administrator, the Trustee or the Master Servicer). The Distribution Account
shall be an Eligible Account. The amount at any time credited to the
Distribution Account shall be (i) fully insured by the FDIC to the maximum
coverage provided thereby or (ii) invested in the name of the Trustee, in such
Permitted Investments selected by the Master Servicer or deposited in demand
deposits with such depository institutions as selected by the Master Servicer,
provided that time deposits of such

                                      -88-
<PAGE>

depository institutions would be a Permitted Investment. All Permitted
Investments shall mature or be subject to redemption or withdrawal on or before,
and shall be held until, the next succeeding Distribution Date if the obligor
for such Permitted Investment is the Master Servicer or, if such obligor is any
other Person, the Business Day preceding such Distribution Date. All investment
earnings on amounts on deposit in the Distribution Account or benefit from funds
uninvested therein from time to time shall be for the account of the Securities
Administrator. The Securities Administrator shall be permitted to withdraw or
receive distribution of any and all investment earnings from the Distribution
Account on each Distribution Date. If there is any loss on a Permitted
Investment or demand deposit, the Securities Administrator shall deposit such
amount in the Distribution Account. With respect to the Distribution Account and
the funds deposited therein, the Securities Administrator shall take such action
as may be necessary to ensure that the Certificateholders shall be entitled to
the priorities afforded to such a trust account (in addition to a claim against
the estate of the Trust) as provided by 12 U.S.C. Section 92a(e), and applicable
regulations pursuant thereto, if applicable, or any applicable comparable state
statute applicable to state chartered banking corporations.

   Section 4.05 Permitted Withdrawals and Transfers from the Distribution
Account.

      (a) The Securities Administrator will, from time to time on demand of the
Master Servicer, make or cause to be made such withdrawals or transfers from the
Distribution Account as the Master Servicer has designated for such transfer or
withdrawal pursuant to the Servicing Agreements for the following purposes
(limited in the case of amounts due the Master Servicer to those not withdrawn
from the Master Servicer Collection Account in accordance with the terms of this
Agreement):

            (i) to reimburse the Master Servicer or any Servicer for any Monthly
      Advance of its own funds or any advance of such Servicer's own funds, the
      right of the Master Servicer or a Servicer to reimbursement pursuant to
      this subclause (i) being limited to amounts received on a particular
      Mortgage Loan (including, for this purpose, the Purchase Price therefor,
      Insurance Proceeds and Liquidation Proceeds) which represent late payments
      or recoveries of the principal of or interest on such Mortgage Loan
      respecting which such Monthly Advance or advance was made;

            (ii) to reimburse the Master Servicer or any Servicer from Insurance
      Proceeds or Liquidation Proceeds relating to a particular Mortgage Loan
      for amounts expended by the Master Servicer or such Servicer in good faith
      as a Servicing Advance in connection with the restoration of the related
      Mortgaged Property which was damaged by an Uninsured Cause or in
      connection with the liquidation of such Mortgage Loan;

            (iii) to reimburse the Master Servicer or any Servicer from
      Insurance Proceeds relating to a particular Mortgage Loan for insured
      expenses incurred with respect to such Mortgage Loan and to reimburse the
      Master Servicer or such Servicer from Liquidation Proceeds from a
      particular Mortgage Loan for Liquidation Expenses incurred with respect to
      such Mortgage Loan; provided that the Master Servicer shall not be
      entitled to reimbursement for Liquidation Expenses with respect to a
      Mortgage Loan to the extent that (i) any amounts with respect to such
      Mortgage Loan were paid as Excess Liquidation Proceeds pursuant to clause
      (xi) of this Subsection 4.03 (a) to the Master Servicer; and

                                      -89-
<PAGE>

      (ii) such Liquidation Expenses were not included in the computation of
      such Excess Liquidation Proceeds;

            (iv) to pay the Master Servicer or any Servicer, as appropriate,
      from Liquidation Proceeds or Insurance Proceeds received in connection
      with the liquidation of any Mortgage Loan, the amount which it or such
      Servicer would have been entitled to receive under subclause (ix) of this
      Subsection 4.03(a) as servicing compensation on account of each defaulted
      scheduled payment on such Mortgage Loan if paid in a timely manner by the
      related Mortgagor;

            (v) to pay the Master Servicer or any Servicer from the Purchase
      Price for any Mortgage Loan, the amount which it or such Servicer would
      have been entitled to receive under subclause (ix) of this Subsection 4.03
      (a) as servicing compensation;

            (vi) to reimburse the Master Servicer or any Servicer for advances
      of funds pursuant to Sections, and the right to reimbursement pursuant to
      this subclause being limited to amounts received on the related Mortgage
      Loan (including, for this purpose, the Purchase Price therefor, Insurance
      Proceeds and Liquidation Proceeds) which represent late recoveries of the
      payments for which such advances were made;

            (vii) to reimburse the Master Servicer or any Servicer for any
      Monthly Advance or advance, after a Realized Loss has been allocated with
      respect to the related Mortgage Loan if the Monthly Advance or advance has
      not been reimbursed pursuant to clauses (i) and (vi);

            (viii) to pay the Master Servicer as set forth in Section 3.14;

            (ix) to reimburse the Master Servicer for expenses, costs and
      liabilities incurred by and reimbursable to it pursuant to this Agreement,
      including but not limited to Sections 3.03, 7.04(c) and (d);

            (x) to pay to the Master Servicer, as additional servicing
      compensation, any Excess Liquidation Proceeds to the extent not retained
      by the related Servicer;

            (xi) to reimburse or pay any Servicer any such amounts as are due
      thereto under the applicable Servicing Agreement and have not been
      retained by or paid to the Servicer, to the extent provided in the related
      Servicing Agreement;

            (xii) to reimburse the Trustee or the Securities Administrator for
      expenses, costs and liabilities incurred by or reimbursable to it pursuant
      to this Agreement;

            (xiii) to remove amounts deposited in error; and

   (xiv) to clear and terminate the Distribution Account pursuant to Section
9.01.

      (b) The Master Servicer shall keep and maintain separate accounting, on a
Mortgage Loan by Mortgage Loan basis, for the purpose of accounting for any
reimbursement from the Distribution Account pursuant to subclauses (i) through
(vi), inclusive, and (viii) or with respect

                                      -90-
<PAGE>
to any such amounts which would have been covered by such subclauses had the
amounts not been retained by the Master Servicer without being deposited in the
Distribution Account under Section 4.02(b).

      (c) On each Distribution Date, the Securities Administrator shall
distribute the Available Funds for each Loan Group to the Holders of the
Certificates in accordance with Section 6.01.

                                   ARTICLE V
                                  CERTIFICATES

      Section 5.01 The Certificates. The Certificates shall be executed by
manual or facsimile signature on behalf of the Securities Administrator by an
authorized officer. Certificates bearing the manual or facsimile signatures of
individuals who were, at the time when such signatures were affixed, authorized
to sign on behalf of the Securities Administrator shall bind the Issuing Entity,
notwithstanding that such individuals or any of them have ceased to be so
authorized prior to the authentication and delivery of such Certificates or did
not hold such offices at the date of such authentication and delivery. No
Certificate shall be entitled to any benefit under this Agreement, or be valid
for any purpose, unless there appears on such Certificate a certificate of
authentication substantially in the form set forth as attached hereto executed
by the Securities Administrator by manual signature, and such certificate of
authentication upon any Certificate shall be conclusive evidence, and the only
evidence, that such Certificate has been duly authenticated and delivered
hereunder. All Certificates shall be dated the date of their authentication. On
the Closing Date, the Securities Administrator shall authenticate the
Certificates to be issued at the written direction of the Depositor, or any
Affiliate thereof.

    Section 5.02 Certificate Register; Registration of Transfer and Exchange of
Certificates.

      (a) The Securities Administrator shall maintain, or cause to be maintained
in accordance with the provisions of Section 5.09 hereof, a Certificate Register
for the Trust Fund in which, subject to the provisions of subsections (b) and
(c) below and to such reasonable regulations as it may prescribe, the Securities
Administrator shall provide for the registration of Certificates and of
Transfers and exchanges of Certificates as herein provided. Upon surrender for
registration of Transfer of any Certificate, the Securities Administrator shall
authenticate and deliver, in the name of the designated transferee or
transferees, one or more new Certificates of the same Class and of like
aggregate Percentage Interest.

      At the option of a Certificateholder, Certificates may be exchanged for
other Certificates of the same Class in authorized denominations and evidencing
the same aggregate Percentage Interest upon surrender of the Certificates to be
exchanged at the office or agency of the Securities Administrator. Whenever any
Certificates are so surrendered for exchange, the Securities Administrator shall
execute, authenticate and deliver the Certificates that the Certificateholder
making the exchange is entitled to receive. Every Certificate presented or
surrendered for registration of Transfer or exchange shall be accompanied by a
written instrument of Transfer in form satisfactory to the Securities
Administrator duly executed by the holder thereof or his attorney duly
authorized in writing.

                                      -91-
<PAGE>

      No service charge to the Certificateholders shall be made for any
registration of Transfer or exchange of Certificates, but payment of a sum
sufficient to cover any tax or governmental charge that may be imposed in
connection with any Transfer or exchange of Certificates may be required. All
Certificates surrendered for registration of Transfer or exchange shall be
canceled and subsequently destroyed by the Securities Administrator in
accordance with such Securities Administrator's customary procedures.

      (b) No Transfer of a Class B, Class P or Class A-R Certificate shall be
made unless such Transfer is made pursuant to an effective registration
statement under the Securities Act and any applicable state securities laws or
is exempt from the registration requirements under the Securities Act and such
state securities laws. In the event that a Transfer is to be made in reliance
upon an exemption from the Securities Act and such laws, in order to assure
compliance with the Securities Act and such laws, the Certificateholder desiring
to effect such Transfer and such Certificateholder's prospective transferee
shall (except with respect to the initial transfer of a Class B, Class P or
Class A-R Certificate by Merrill Lynch & Co.) each certify to each Securities
Administrator in writing the facts surrounding the Transfer in substantially the
form set forth in Exhibit F-1 (the "Transferor Representation Letter") and (i)
deliver a letter in substantially the form of either Exhibit F-2 (the "Investor
Representation Letter") or Exhibit F-3 (the "Rule 144A Letter") or (ii) there
shall be delivered to the Securities Administrator an Opinion of Counsel that
such Transfer may be made pursuant to an exemption from the Securities Act,
which Opinion of Counsel shall not be an expense of the Depositor or the
Securities Administrator. The Depositor shall provide to any Holder of a Class
B, Class P or Class A-R Certificate and any prospective transferee designated by
any such Holder, information regarding the related Certificates and the Mortgage
Loans and such other information as shall be necessary to satisfy the condition
to eligibility set forth in Rule 144A(d)(4) for Transfer of any such Certificate
without registration thereof under the Securities Act pursuant to the
registration exemption provided by Rule 144A. The Securities Administrator shall
cooperate with the Depositor in providing the Rule 144A information referenced
in the preceding sentence, including providing to the Depositor such information
in the possession of the Securities Administrator regarding the Certificates,
the Mortgage Loans and other matters regarding the Trust Fund as the Depositor
shall reasonably request to meet its obligation under the preceding sentence.
Each Holder of a Class B, Class P or Class A-R Certificate desiring to effect
such Transfer shall, and does hereby agree to, indemnify the Depositor and the
Securities Administrator against any liability that may result if the Transfer
is not so exempt or is not made in accordance with such federal and state laws.

      No transfer of an ERISA Restricted Certificate or a Class A-R Certificate
will be registered unless the Securities Administrator has received (A) a
representation to the effect that such transferee is not an employee benefit
plan subject to Title I of ERISA, a plan subject to Section 4975 of the Code or
a plan subject to any state, local, federal, non-U.S. or other law substantively
similar to the foregoing provisions of ERISA or the Code ("Similar Law")
(collectively, a "Plan"), and is not directly or indirectly acquiring such
Certificate for, on behalf of, or with any assets of any such Plan, or (B)
solely in the case of an ERISA Restricted Certificate (I) if the Certificate has
been the subject of an ERISA-Qualifying Underwriting, a representation to the
effect that such transferee is an insurance company that is acquiring the
Certificate with assets contained in an "insurance company general account," as
defined in Section V(e) of Prohibited Transaction Class Exemption ("PTCE")
95-60, and the acquisition

                                      -92-
<PAGE>

and holding of the Certificate are covered and exempt under Sections I and III
of PTCE 95-60, or (II) solely in the case of a Definitive Certificate, an
Opinion of Counsel satisfactory to the Securities Administrator, and upon which
the Securities Administrator shall be entitled to rely, to the effect that the
acquisition and holding of such Certificate will not constitute or result in a
nonexempt prohibited transaction under Title I of ERISA or Section 4975 of the
Code, or a violation of Similar Law, and will not subject the Securities
Administrator, the Master Servicer, the Trustee or the Depositor to any
obligation in addition to those expressly undertaken in this Agreement, which
Opinion of Counsel shall not be an expense of the Securities Administrator, the
Master Servicer, the Trustee or the Depositor.

      Except in the case of a Definitive Certificate, the representations set
forth in the immediately preceding paragraph of this Subsection 5.02(b), other
than clause (B)(II) in the immediately preceding paragraph, shall be deemed to
have been made to the Securities Administrator by the transferee's acceptance of
an ERISA Restricted Certificate or a Class A-R Certificate (or the acceptance by
a Certificate Owner of the beneficial interest in any Class of ERISA Restricted
Certificates or a Class A-R Certificate).

      Notwithstanding any other provision herein to the contrary, any purported
transfer of an ERISA Restricted Certificate or a Class A-R Certificate to or on
behalf of a Plan without the delivery to the Securities Administrator of a
representation or an Opinion of Counsel satisfactory to the Securities
Administrator as described above shall be void and of no effect. The Securities
Administrator shall not be under any liability to any Person for any
registration or transfer of any ERISA Restricted Certificate or Class A-R
Certificate that is in fact not permitted by this Section 5.02(b), nor shall the
Trustee or the Securities Administrator be under any liability for making any
payments due on such Certificate to the Holder thereof or taking any other
action with respect to such Holder under the provisions of this Agreement so
long as the transfer was registered by the Securities Administrator in
accordance with the foregoing requirements. The Trustee or the Securities
Administrator shall be entitled, but not obligated, to recover from any Holder
of any ERISA Restricted Certificate or Class A-R Certificate that was in fact a
Plan and that held such Certificate in violation of this Section 5.02(b) all
payments made on such ERISA Restricted Certificate or a Class A-R Certificate at
and after the time it commenced such holding. Any such payments so recovered
shall be paid and delivered to the last preceding Holder of such Certificate
that is not a Plan.

      (c) Each Person who has or who acquires any Ownership Interest in a Class
A-R Certificate shall be deemed by the acceptance or acquisition of such
Ownership Interest to have agreed to be bound by the following provisions, and
the rights of each Person acquiring any Ownership Interest in a Class A-R
Certificate are expressly subject to the following provisions:

            (i) Each Person holding or acquiring any Ownership Interest in a
      Class A-R Certificate shall be a Permitted Transferee and shall promptly
      notify the Securities Administrator of any change or impending change in
      its status as a Permitted Transferee.

            (ii) No Ownership Interest in a Class A-R Certificate may be
      purchased, transferred or sold, directly or indirectly, except in
      accordance with the provisions hereof. No Ownership Interest in a Class
      A-R Certificate may be registered on the Closing Date or thereafter
      transferred, and the Securities Administrator shall not register the
      Transfer

                                      -93-
<PAGE>

      of any Class A-R Certificate unless, in addition to the certificates
      required to be delivered to the Securities Administrator under
      subparagraph (b) above, the Securities Administrator shall have been
      furnished with an affidavit (a "Transferee's Letter") of the initial owner
      or the proposed transferee in the form attached hereto as Exhibit E-1 and
      an affidavit (a "Transferor Certificate") of the proposed transferor in
      the form attached hereto as Exhibit E-2. In the absence of a contrary
      instruction from the transferor of a Class A-R Certificate, declaration
      (11) in Appendix A of the Transferee's Letter may be left blank. If the
      transferor requests by written notice to the Securities Administrator
      prior to the date of the proposed transfer that one of the two other forms
      of declaration (11) in Appendix A of the Transferee's Letter be used, then
      the requirements of this Section 5.02(c)(ii) shall not have been satisfied
      unless the Transferee's Letter includes such other form of declaration.

            (iii) Each Person holding or acquiring any Ownership Interest in a
      Class A-R Certificate shall agree (A) to obtain a Transferee's Letter from
      any other Person to whom such Person attempts to Transfer its Ownership
      Interest in a Class A-R Certificate, (B) to obtain a Transferee's Letter
      from any Person for whom such Person is acting as nominee, trustee or
      agent in connection with any Transfer of a Class A-R Certificate and (C)
      not to Transfer its Ownership Interest in a Class A-R Certificate or to
      cause the Transfer of an Ownership Interest in a Class A-R Certificate to
      any other Person if it has actual knowledge that such Person is not a
      Permitted Transferee. Further, no transfer, sale or other disposition of
      any Ownership Interest in a Class A-R Certificate may be made to a person
      who is not a U.S. Person (within the meaning of Section 7701 of the Code)
      unless such person furnishes the transferor and the Securities
      Administrator with a duly completed and effective Internal Revenue Service
      Form W-8ECI (or any successor thereto) and the Securities Administrator
      consents to such transfer, sale or other disposition in writing.

            (iv) Any attempted or purported Transfer of any Ownership Interest
      in a Class A-R Certificate in violation of the provisions of this Section
      5.02(c) shall be absolutely null and void and shall vest no rights in the
      purported Transferee. If any purported transferee shall become a Holder of
      a Class A-R Certificate in violation of the provisions of this Section
      5.02(c), then the last preceding Permitted Transferee shall be restored to
      all rights as Holder thereof retroactive to the date of registration of
      Transfer of such Class A-R Certificate. The Securities Administrator shall
      be under no liability to any Person for any registration of Transfer of a
      Class A-R Certificate that is in fact not permitted by Section 5.02(b) and
      this Section 5.02(c) or for making any payments due on such Certificate to
      the Holder thereof or taking any other action with respect to such Holder
      under the provisions of this Agreement so long as the Transfer was
      registered after receipt of the related Transferee's Letter. The
      Securities Administrator shall be entitled but not obligated to recover
      from any Holder of a Class A-R Certificate that was in fact not a
      Permitted Transferee at the time it became a Holder or, at such subsequent
      time as it became other than a Permitted Transferee, all payments made on
      such Class A-R Certificate at and after either such time. Any such
      payments so recovered by the Securities Administrator shall be paid and
      delivered by the Securities Administrator to the last preceding Permitted
      Transferee of such Certificate.

                                      -94-
<PAGE>

            (v) At the option of the Holder of the Class A-R Certificate, the
      Class LT1-R Interest, the Class LT2-R Interest and the Residual Interest
      may be severed and represented by separate certificates; provided,
      however, that such separate certification may not occur until the
      Securities Administrator receives a REMIC Opinion to the effect that
      separate certification in the form and manner proposed would not result in
      the imposition of federal tax upon the Issuing Entity or any of the REMICs
      provided for herein or cause any of the REMICs provided for herein to fail
      to qualify as a REMIC; and provided further, that the provisions of
      Sections 5.02(b) and (c) will apply to each such separate certificate as
      if the separate certificate were a Class A-R Certificate. If, as evidenced
      by a REMIC Opinion, it is necessary to preserve the REMIC status of any of
      the REMICs provided for herein, the Class LT1-R Interest, the Class LT2-R
      Interest and the Residual Interest shall be severed and represented by
      separate Certificates.

      The restrictions on Transfers of a Class A-R Certificate set forth in this
Section 5.02(c) shall cease to apply (and the applicable portions of the legend
on a Class A-R Certificate may be deleted) with respect to Transfers occurring
after delivery to the Securities Administrator of an Opinion of Counsel, which
Opinion of Counsel shall not be an expense of the Securities Administrator or
the Depositor, to the effect that the elimination of such restrictions will not
cause any of the REMICs provided for herein to fail to qualify as a REMIC at any
time that the Certificates are outstanding or result in the imposition of any
tax on the Issuing Entity, any REMIC provided for herein, a Certificateholder or
another Person. Each Person holding or acquiring any Ownership Interest in a
Class A-R Certificate hereby consents to any amendment of this Agreement that,
based on an Opinion of Counsel furnished to the Securities Administrator, is
reasonably necessary (a) to ensure that the record ownership of, or any
beneficial interest in, a Class A-R Certificate is not transferred, directly or
indirectly, to a Person that is not a Permitted Transferee and (b) to provide
for a means to compel the Transfer of a Class A-R Certificate that is held by a
Person that is not a Permitted Transferee to a Holder that is a Permitted
Transferee.

      (d) The transferor of the Class A-R Certificate shall notify the
Securities Administrator in writing upon the transfer of the Class A-R
Certificate.

      (e) The preparation and delivery of all certificates, opinions and other
writings referred to above in this Section 5.02 shall not be an expense of the
Issuing Entity, the Depositor or the Securities Administrator.

      Section 5.03 Mutilated, Destroyed, Lost or Stolen Certificates. If (a) any
mutilated Certificate is surrendered to the Securities Administrator or the
Securities Administrator receives evidence to its satisfaction of the
destruction, loss or theft of any Certificate and of the ownership thereof and
(b) there is delivered to the Securities Administrator such security or
indemnity as may be required by them to save each of them harmless, then, in the
absence of notice to the Securities Administrator that such Certificate has been
acquired by a bona fide purchaser, the Securities Administrator shall execute,
authenticate and deliver, in exchange for or in lieu of any such mutilated,
destroyed, lost or stolen Certificate, a new Certificate of like Class, tenor
and Percentage Interest. In connection with the issuance of any new Certificate
under this Section 5.03, the Securities Administrator may require the payment of
a sum sufficient to cover any tax or other governmental charge that may be
imposed in relation thereto and any other expenses

                                      -95-
<PAGE>

(including the fees and expenses of the Securities Administrator) connected
therewith. Any replacement Certificate issued pursuant to this Section 5.03
shall constitute complete and indefeasible evidence of ownership in the Trust
Fund, as if originally issued, whether or not the lost, stolen or destroyed
Certificate shall be found at any time. All Certificates surrendered to the
Securities Administrator under the terms of this Section 5.03 shall be canceled
and destroyed by the Securities Administrator in accordance with its standard
procedures without liability on its part.

      Section 5.04 Persons Deemed Owners. The Securities Administrator and any
agent of the Securities Administrator may treat the Person in whose name any
Certificate is registered as the owner of such Certificate for the purpose of
receiving distributions as provided in this Agreement and for all other purposes
whatsoever, and neither the Securities Administrator, nor any agent of the
Securities Administrator shall be affected by any notice to the contrary.

      Section 5.05 Access to List of Certificateholders' Names and Addresses. If
three or more Certificateholders (a) request such information in writing from
the Securities Administrator, (b) state that such Certificateholders desire to
communicate with other Certificateholders with respect to their rights under
this Agreement or under the Certificates, and (c) provide a copy of the
communication that such Certificateholders propose to transmit or if the
Depositor shall request such information in writing from the Securities
Administrator, then the Securities Administrator shall, within ten Business Days
after the receipt of such request, provide the Depositor or such
Certificateholders at such recipients' expense the most recent list of the
Certificateholders of the Trust Fund held by the Securities Administrator, if
any. The Depositor and every Certificateholder, by receiving and holding a
Certificate, agree that the Securities Administrator shall not be held
accountable by reason of the disclosure of any such information as to the list
of the Certificateholders hereunder, regardless of the source from which such
information was derived.

      Section 5.06 Book-Entry Certificates. The Regular Certificates, upon
original issuance, shall be issued in the form of one or more typewritten
Certificates representing the Book-Entry Certificates, to be delivered to the
Depository by or on behalf of the Depositor. The Book-Entry Certificates shall
initially be registered on the Certificate Register in the name of the
Depository or its nominee, and no Certificate Owner of a Book-Entry Certificate
will receive a definitive certificate representing such Certificate Owner's
interest in such Certificates, except as provided in Section 5.08. Unless and
until definitive, fully registered Certificates ("Definitive Certificates") have
been issued to the Certificate Owners of the Book-Entry Certificates pursuant to
Section 5.08:

      (a) the provisions of this Section shall be in full force and effect;

      (b) the Depositor and the Securities Administrator may deal with the
Depository and the Depository Participants for all purposes (including the
making of distributions) as the authorized representative of the respective
Certificate Owners of the Book-Entry Certificates;

      (c) registration of the Book-Entry Certificates may not be transferred by
the Securities Administrator except to another Depository;

                                      -96-
<PAGE>

      (d) the rights of the respective Certificate Owners of the Book-Entry
Certificates shall be exercised only through the Depository and the Depository
Participants and shall be limited to those established by law and agreements
between the Owners of the Book-Entry Certificates and the Depository and/or the
Depository Participants. Pursuant to the Depository Agreement, unless and until
Definitive Certificates are issued pursuant to Section 5.08, the Depository will
make book-entry transfers among the Depository Participants and receive and
transmit distributions of principal and interest on the related Certificates to
such Depository Participants;

            (e) the Depository may collect its usual and customary fees, charges
      and expenses from its Depository Participants;

            (f) the Securities Administrator may rely and shall be fully
      protected in relying upon information furnished by the Depository with
      respect to its Depository Participants; and

            (g) to the extent that the provisions of this Section conflict with
      any other provisions of this Agreement, the provisions of this Section
      shall control.

      For purposes of any provision of this Agreement requiring or permitting
actions with the consent of, or at the direction of, Certificateholders
evidencing a specified percentage of the aggregate unpaid principal amount of
any Class of Certificates, such direction or consent may be given by Certificate
Owners (acting through the Depository and the Depository Participants) owning
Book-Entry Certificates evidencing the requisite percentage of principal amount
of such Class of Certificates.

      Section 5.07 Notices to Depository. Whenever any notice or other
communication is required to be given to Certificateholders of the Class with
respect to which Book-Entry Certificates have been issued, unless and until
Definitive Certificates shall have been issued to the related Certificate
Owners, the Securities Administrator shall give all such notices and
communications to the Depository.

      Section 5.08 Definitive Certificates. If, after Book-Entry Certificates
have been issued with respect to any Certificates, (a) the Depository or the
Depositor advises the Securities Administrator that the Depository is no longer
willing, qualified or able to discharge properly its responsibilities under the
Depository Agreement with respect to such Certificates and the Securities
Administrator or the Depositor is unable to locate a qualified successor, (b)
the Depositor notifies the Securities Administrator and the Depository of its
intent to terminate the book-entry system through the Depository and, upon
receipt of notice of such intent from the Depository, the Certificate Owners of
the Book-Entry Certificates agree to initiate such termination or (c) after the
occurrence and continuation of an Event of Default, Certificate Owners of such
Book-Entry Certificates having not less than 51% of the Voting Rights evidenced
by any Class of Book-Entry Certificates advise the Securities Administrator and
the Depository in writing through the Depository Participants that the
continuation of a book-entry system with respect to Certificates of such Class
through the Depository (or its successor) is no longer in the best interests of
the Certificate Owners of such Class, then the Securities Administrator shall
notify all Certificate Owners of such Book-Entry Certificates, through the
Depository, of the occurrence of any such event and of the availability of
Definitive Certificates to Certificate Owners of such Class requesting the same.
The Depositor shall provide the

                                      -97-
<PAGE>

Securities Administrator with an adequate inventory of certificates to
facilitate the issuance and transfer of Definitive Certificates. Upon surrender
to the Securities Administrator of any such Certificates by the Depository,
accompanied by registration instructions from the Depository for registration,
the Securities Administrator shall authenticate and deliver such Definitive
Certificates. Neither the Depositor nor the Securities Administrator shall be
liable for any delay in delivery of such instructions and each may conclusively
rely on, and shall be protected in relying on, such instructions. Upon the
issuance of such Definitive Certificates, all references herein to obligations
imposed upon or to be performed by the Depository shall be deemed to be imposed
upon and performed by the Securities Administrator, to the extent applicable
with respect to such Definitive Certificates and the Securities Administrator
shall recognize the Holders of such Definitive Certificates as
Certificateholders hereunder.

      Section 5.09 Maintenance of Office or Agency. The Securities Administrator
will maintain or cause to be maintained at its expense an office or offices or
agency or agencies where Certificates may be surrendered for registration of
transfer or exchange. The Securities Administrator initially designates its
offices at Sixth Street and Marquette Avenue, Minneapolis, Minnesota 55479,
Attention: Corporate Trust Services - Merrill Lynch Mortgage Investors Trust,
Series 2006-A4 as offices for such purposes. The Securities Administrator will
give prompt written notice to the Certificateholders of any change in such
location of any such office or agency.

                                   ARTICLE VI
                         PAYMENTS TO CERTIFICATEHOLDERS

      Section 6.01 Distributions on the Certificates. (a) Interest and principal
on the Certificates will be distributed by the Securities Administrator monthly
on each Distribution Date, commencing in August 2006, as instructed by the
Master Servicer, in an aggregate amount equal to the sum of the Available Funds
for such Distribution Date. On each Distribution Date, the Available Funds shall
be distributed as follows:

            (A) On each Distribution Date, the Group I Available Funds will be
            distributed in the following order of priority among the Group I
            Certificates except as otherwise noted:

                  first, to the Class I-A, Class X-A and Class A-R Certificates,
                  pro rata, the Accrued Certificate Interest on each class of
                  Group I Certificates for such Distribution Date; provided,
                  however, that on each Distribution Date, amounts that would
                  otherwise be payable to the Class X-A Certificates under this
                  clause will be paid to the Class I-A Certificates to the
                  extent of any Basis Risk Shortfall Amounts remaining unpaid as
                  of such Distribution Date;

                  second, to the Class I-A, Class X-A and Class A-R
                  Certificates, pro rata, any Accrued Certificate Interest
                  thereon remaining undistributed from previous Distribution
                  Dates, to the extent of remaining Group I Available Funds, any
                  shortfall in available amounts being allocated to the Group I
                  Certificates in proportion to the amount of such Accrued
                  Certificate

                                      -98-
<PAGE>

                  Interest remaining undistributed for each class of Group I
                  Certificates for such Distribution Date; provided, however,
                  that on each Distribution Date, amounts that would otherwise
                  be payable to the Class X-A Certificates under this clause
                  will be paid to the Class I-A Certificates to the extent of
                  any Basis Risk Shortfall Amounts remaining unpaid as of such
                  Distribution Date; and

                  third, to the Class I-A and Class A-R Certificates, pro rata,
                  in reduction of the Class Certificate Balances thereof, the
                  Group I Senior Principal Distribution Amount for such
                  Distribution Date to the extent of remaining Group I Available
                  Funds, until the Class Certificate Balances of such Classes
                  have been reduced to zero. Concurrently, the Class X-A
                  Notional Amount will be reduced by an amount equal to the
                  reduction of the Class Certificate Balance of the Class I-A
                  Certificates.

                  Amounts that would have been distributed in respect of the
                  Class X-A Certificates, but for the proviso set forth in
                  clauses "first" and "second" above shall be treated as having
                  been distributed to the Class X-A Certificates for purposes of
                  determining subsequent interest shortfalls with respect to the
                  Class X-A Certificates and the Class X-A Certificates shall
                  have no right to reimbursement therefor. For federal income
                  tax purposes, such amounts shall be deemed to have been
                  distributed to the Class X-A Certificates in respect of a
                  REMIC regular interest and then as having been paid over to
                  the Class I-A Certificates pursuant to an interest rate cap
                  agreement.

            (B) On each Distribution Date, the Group II Available Funds will be
            distributed in the following order of priority among the Group II
            Certificates except as otherwise noted:

                  first, to the Class II-A Certificates, the Accrued Certificate
                  Interest on the Group II Certificates for such Distribution
                  Date;

                  second, to the Class II-A Certificates, any Accrued
                  Certificate Interest thereon remaining undistributed from
                  previous Distribution Dates, to the extent of remaining Group
                  II Available Funds, any shortfall in available amounts being
                  allocated to the Group II Certificates in proportion to the
                  amount of such Accrued Certificate Interest remaining
                  undistributed for the Group II Certificates for such
                  Distribution Date; and

                  third, to the Class II-A Certificates, in reduction of the
                  Class Certificate Balance thereof, the Group II Senior
                  Principal Distribution Amount for such Distribution Date to
                  the extent of remaining Group II Available Funds, until the
                  Class Certificate Balance of such Class has been reduced to
                  zero.

                                      -99-
<PAGE>

            (C) On each Distribution Date, the Group III Available Funds will be
            distributed in the following order of priority among the Group III
            Certificates except as otherwise noted:

                  first, to the Class III-A-1 Certificates and Class III-A-2
                  Certificates, pro rata, the Accrued Certificate Interest on
                  the Group III Certificates for such Distribution Date;

                  second, to the Class III-A-1 Certificates and Class III-A-2
                  Certificates, pro rata, any Accrued Certificate Interest
                  thereon remaining undistributed from previous Distribution
                  Dates, to the extent of remaining Group III Available Funds,
                  any shortfall in available amounts being allocated to the
                  Group III Certificates in proportion to the amount of such
                  Accrued Certificate Interest remaining undistributed for the
                  Group III Certificates for such Distribution Date; and

                  third, to the Class III-A-1 Certificates and Class III-A-2
                  Certificates, pro rata, in reduction of the Class Certificate
                  Balances thereof, the Group III Senior Principal Distribution
                  Amount for such Distribution Date to the extent of remaining
                  Group III Available Funds, until the Class Certificate
                  Balances of such Classes have been reduced to zero.

            (D) On each Distribution Date, the Group IV Available Funds will be
            distributed in the following order of priority among the Group IV
            Certificates except as otherwise noted:

                  first, to the Class IV-A-1 Certificates and Class IV-A-2
                  Certificates, pro rata,, the Accrued Certificate Interest on
                  the Group IV Certificates for such Distribution Date;

                  second, to the Class IV-A-1 Certificates and Class IV-A-2
                  Certificates, pro rata, any Accrued Certificate Interest
                  thereon remaining undistributed from previous Distribution
                  Dates, to the extent of remaining Group IV Available Funds,
                  any shortfall in available amounts being allocated to the
                  Group IV Certificates in proportion to the amount of such
                  Accrued Certificate Interest remaining undistributed for the
                  Group IV Certificates for such Distribution Date; and

                  third, to the Class IV-A-1 Certificates and Class IV-A-2
                  Certificates, pro rata, in reduction of the Class Certificate
                  Balances thereof, the Group IV Senior Principal Distribution
                  Amount for such Distribution Date to the extent of remaining
                  Group IV Available Funds, until the Class Certificate Balances
                  of such Classes have been reduced to zero.

            (E) On each Distribution Date, the Group V Available Funds will be
            distributed in the following order of priority among the Group V
            Certificates except as otherwise noted:

                                     -100-
<PAGE>

                  first, to the Class V-A Certificates, the Accrued Certificate
                  Interest on the Group V Certificates for such Distribution
                  Date;

                  second, to the Class V Certificates, pro rata, any Accrued
                  Certificate Interest thereon remaining undistributed from
                  previous Distribution Dates, to the extent of remaining Group
                  V Available Funds, any shortfall in available amounts being
                  allocated to the Group V Certificates in proportion to the
                  amount of such Accrued Certificate Interest remaining
                  undistributed for the Group V Certificates for such
                  Distribution Date; and

                  third, to the Class V Certificates, pro rata, in reduction of
                  the Class Certificate Balance thereof, the Group V Senior
                  Principal Distribution Amount for such Distribution Date to
                  the extent of remaining Group V Available Funds, until the
                  Class Certificate Balance of such Class has been reduced to
                  zero.

            (F) [Reserved.]

            (G) On each Distribution Date on or prior to the Credit Support
            Depletion Date, an amount equal to the sum of the remaining Group I
            Available Funds, Group II Available Funds, Group III Available
            Funds, Group IV Available Funds and Group V Available Funds after
            the distributions in clauses (A) through (E) above and after any
            distributions required to be made pursuant to clauses (H) and (I)
            below, will be distributed sequentially, in the following order, to
            the Class M-1, Class M-2, Class M-3, Class B-1, Class B-2 and Class
            B-3 Certificates, in each case up to an amount equal to and in the
            following order: (a) the Accrued Certificate Interest thereon for
            such Distribution Date, (b) any Accrued Certificate Interest thereon
            remaining undistributed from previous Distribution Dates and (c)
            such Class's Subordinate Principal Distribution Amount for such
            Distribution Date, in each case to the extent of the remaining
            Available Funds.

            (H) On each Distribution Date prior to the Credit Support Depletion
            Date but after the reduction of the aggregate Class Certificate
            Balance of the related Senior Certificates of a related Loan Group
            to zero, the remaining Class or Classes of related Senior
            Certificates will be entitled to receive in reduction of their Class
            Certificate Balances, pro rata, based upon their respective Class
            Certificate Balances immediately prior to such Distribution Date, in
            addition to any Principal Prepayments related to such remaining
            Senior Certificates' respective Loan Group allocated to such Senior
            Certificates, 100% of the Principal Prepayments on any Mortgage Loan
            in the Loan Group relating to the fully repaid Class or Classes of
            Senior Certificates; provided, however, that if both (a) the
            weighted average of the Subordinate Percentage equals or exceeds
            200% of the original weighted average of the Subordinate Percentage
            as of the Closing Date on or after the Distribution Date in August
            2009 and (b) the aggregate Stated Principal Balance of the Mortgage
            Loans delinquent 60 days or more, averaged over the last six months,
            as a percentage of the aggregate Class Certificate Balance of the
            Class M Certificates and Class B Certificates, does not exceed 50%,
            then the additional

                                     -101-
<PAGE>

            allocation of Principal Prepayments to the Senior Certificates in
            accordance with this clause (H) will not be made and 100% of the
            Principal Prepayments on any Mortgage Loan in the Loan Group
            relating to the fully repaid class or classes of Senior Certificates
            will be allocated to the Subordinate Certificates.

            (I) If on any Distribution Date on which the aggregate Class
            Certificate Balance of any Class or Classes of Senior Certificates
            would be greater than the aggregate Stated Principal Balance of the
            Mortgage Loans in its related Loan Group (the amount of such excess,
            the "Undercollateralized Amount," and any such Class or Classes of
            Senior Certificates, the "Undercollateralized Senior Certificates")
            and any Subordinate Certificates are still outstanding in each case
            after giving effect to distributions to be made on such Distribution
            Date, (i) 100% of amounts otherwise allocable to the Subordinate
            Certificates in respect of principal will be distributed to the
            Undercollateralized Senior Certificates in reduction of the Class
            Certificate Balances thereof, until the aggregate Class Certificate
            Balance of such Class or Classes of Undercollateralized Senior
            Certificates is equal to the aggregate Stated Principal Balance of
            the Mortgage Loans in its related Loan Group, and (ii) the Accrued
            Certificate Interest otherwise allocable to the Subordinate
            Certificates on such Distribution Date will be reduced, if
            necessary, and distributed to such Class or Classes of
            Undercollateralized Senior Certificates pursuant to clause first of
            clauses (A), (B), (C), (D), or (E) above, as applicable, in an
            amount equal to the Accrued Certificate Interest at the Pass-Through
            Rate for such Class or Classes of Undercollateralized Senior
            Certificates for such Distribution Date on a balance equal to the
            related Undercollateralized Amount. Any such reduction in the
            Accrued Certificate Interest on the Subordinate Certificates will be
            allocated to the Class B-3, Class B-2, Class B-1, Class M-3, Class
            M-2 and Class M-1 Certificates, in that order.

      On each Distribution Date, any Available Funds remaining after payment of
interest and principal to the Classes of Certificates entitled thereto, as
described above, will be distributed to the Class A-R Certificates; provided
that if on any Distribution Date on and after the Credit Support Depletion Date
there are any Group I, Group II, Group III, Group IV and Group V Available Funds
remaining after payment of interest and principal to a Class or Classes of
Senior Certificates entitled thereto, such amounts will be distributed to the
other Classes of Senior Certificates, pro rata, based upon their Class
Certificate Balances, until all amounts due to all Classes of Senior
Certificates have been paid in full, before any amounts are distributed to the
Class A-R Certificates.

      In addition to the foregoing distributions, with respect to any Subsequent
Recoveries, the Master Servicer shall deposit such amounts into the Master
Servicer Collection Account pursuant to Section 4.01(a). If, after taking into
account such Subsequent Recoveries, the amount of a Realized Loss is reduced,
the amount of such Subsequent Recoveries will be applied to increase the Class
Certificate Balance of the Class of Subordinate Certificates with the highest
payment priority to which Realized Losses have been allocated, including any
Class of Subordinate Certificates to which a Realized Loss was previously
allocated and whose Class Certificate Balance has been reduced to zero, but not
by more than the amount of Realized Losses

                                     -102-
<PAGE>

previously allocated to that Class of Certificates pursuant to Section 6.02. The
amount of any remaining Subsequent Recoveries will be applied to increase the
Class Certificate Balance of the Class of Certificates with the next highest
payment priority, up to the amount of such Realized Losses previously allocated
to that Class of Certificates pursuant to Section 6.02, and so on. Holders of
such Certificates will not be entitled to any payment in respect of Accrued
Certificate Interest on the amount of such increases for any Interest Accrual
Period preceding the Distribution Date on which such increase occurs. Any such
increases shall be applied to the Class Certificate Balance of each Certificate
of such Class in accordance with its respective Percentage Interest.

            (J) Any Prepayment Penalties shall be distributed to the Class P
Certificates.

      Section 6.02 Allocation of Losses.

      (a) On or prior to each Determination Date, the Securities Administrator
shall determine the amount of any Realized Loss in respect of each Mortgage Loan
that occurred during the immediately preceding calendar month.

      (b) With respect to any Certificates on any Distribution Date, the
principal portion of each Realized Loss on a Mortgage Loan shall be allocated as
follows:

            first, to the Class B-3 Certificates until the Class Certificate
      Balance thereof has been reduced to zero;

            second, to the Class B-2 Certificates until the Class Certificate
      Balance thereof has been reduced to zero;

            third, to the Class B-1 Certificates until the Class Certificate
      Balance thereof has been reduced to zero;

            fourth, to the Class M-3 Certificates until the Class Certificate
      Balance thereof has been reduced to zero;

            fifth, to the Class M-2 Certificates until the Class Certificate
      Balance thereof has been reduced to zero;

            sixth, to the Class M-1 Certificates until the Class Certificate
      Balance thereof has been reduced to zero;

            seventh, if the Realized Loss occurs on a Mortgage Loan in a Loan
      Group where the aggregate Stated Principal Balance of the Mortgage Loans
      in such Loan Group is greater than the aggregate Class Certificate Balance
      of the related Senior Certificates, the Realized Loss will be allocated to
      any Senior Certificates related to a Loan Group where the aggregate Stated
      Principal Balance of the Mortgage Loans in such Loan Group is less than
      the aggregate Class Certificate Balance of the related Senior Certificates
      (any such amount, the "Deficiency Amount"), pro rata, based on the
      respective Deficiency Amount, in each case until the amount by which the
      aggregate Stated Principal Balance of the Mortgage Loans in the Loan Group
      in which the Realized Loss occurs exceeds the

                                     -103-
<PAGE>

      aggregate Class Certificate Balance of the related Senior Certificates
      until the Class Certificate Balances of such Senior Certificates have been
      reduced to zero; and

            eighth, to the Senior Certificates related to the Loan Group in
      which the Realized Loss occurred, until the Class Certificate Balances
      thereof have been reduced to zero.

            Notwithstanding the foregoing, any portion of any Realized Loss that
      would otherwise be allocated to the Class III-A-1 Certificates will
      instead be allocated first to the Class III-A-2 Certificates until the
      Class Certificate Balance thereof has been reduced to zero, and any
      portion of any Realized Loss that would otherwise be allocated to the
      Class IV-A-1 Certificates will instead be allocated first to the Class
      IV-A-2 Certificates until the Class Certificate Principal Balance thereof
      has been reduced to zero.

      (c) Notwithstanding the other provisions of Section 6.02, the first $0.90
of Realized Losses shall not be allocated to any Class of Certificates.

      Section 6.03 Payments.

      (a) On each Distribution Date, other than the final Distribution Date, the
Securities Administrator shall distribute to each Certificateholder of record on
the directly preceding Record Date the Certificateholder's pro rata share of its
Class (based on the aggregate Percentage Interest represented by such Holder's
Certificates) of all amounts required to be distributed on such Distribution
Date to such Class, based solely on information provided to the Securities
Administrator by the Master Servicer. The Securities Administrator shall
calculate the amount to be distributed to each Class and, based on such amounts,
the Securities Administrator shall determine the amount to be distributed to
each Certificateholder. All of the Securities Administrator's calculations of
payments shall be based solely on information provided to the Securities
Administrator by the Master Servicer or the applicable Servicer. The Securities
Administrator shall not be required to confirm, verify or recompute any such
information but shall be entitled to rely conclusively on such information.

      (b) Payment of the above amounts to each Certificateholder shall be made
(i) by check mailed to each Certificateholder entitled thereto at the address
appearing in the Certificate Register or (ii) upon receipt by the Securities
Administrator on or before the fifth Business Day preceding the Record Date of
written instructions from a Certificateholder by wire transfer to a United
States dollar account maintained by the payee at any United States depository
institution with appropriate facilities for receiving such a wire transfer;
provided, however, that the final payment in respect of each Class of
Certificates will be made only upon presentation and surrender of such
respective Certificates at the office or agency of the Securities Administrator
specified in the notice to Certificateholders of such final payment.

                                     -104-
<PAGE>

      Section 6.04 Statements to Certificateholders.

      (a) Concurrently with each distribution to Certificateholders, the
Securities Administrator shall make available to the parties hereto and each
Certificateholder via the Securities Administrator's internet website as set
forth below, the following information (such information the "Monthly
Statement"):

            (i) the amount of the distribution made on such Distribution Date to
      the Holders of each Class of Certificates, separately identified,
      allocable to principal;

            (ii) the amount of the distribution made on such Distribution Date
      to the Holders of each Class of Certificates allocable to interest,
      separately identified;

            (iii) the aggregate amount the Servicing Fee during the related Due
      Period and such other customary information as the Trustee deems necessary
      or desirable, or which a Certificateholder reasonably requests, to enable
      Certificateholders to prepare their tax returns;

            (iv) the aggregate amount of Monthly Advances for the related Due
      Period;

            (v) the aggregate Stated Principal Balance of the Group I Mortgage
      Loans, Group II Mortgage Loans, Group III Mortgage Loans, Group IV
      Mortgage Loans and Group V Mortgage Loans at the close of business at the
      end of the related Due Period;

            (vi) the number, weighted average remaining term to maturity and
      weighted average Mortgage Interest Rate of the Group I Mortgage Loans,
      Group II Mortgage Loans, Group III Mortgage Loans, Group IV Mortgage Loans
      and Group V Mortgage Loans as of the related Due Date;

            (vii) the number and aggregate unpaid principal balance of Group I
      Mortgage Loans, Group II Mortgage Loans, Group III Mortgage Loans, Group
      IV Mortgage Loans and Group V Mortgage Loans (a) one month, two months or
      three months delinquent on a contractual basis, (b) as to which
      foreclosure proceedings have been commenced and (c) in bankruptcy as of
      the close of business on the last day of the calendar month preceding such
      Distribution Date determined in accordance with the MBA method;

            (viii) with respect to any Group I Mortgage Loan, Group II Mortgage
      Loan, Group III Mortgage Loan, Group IV Mortgage Loan and Group V Mortgage
      Loan that became an REO Property during the preceding calendar month, the
      Stated Principal Balance of such Group I Mortgage Loan, Group II Mortgage
      Loan, Group III Mortgage Loan, Group IV Mortgage Loan or Group V Mortgage
      Loan as of the date it became an REO Property;

            (ix) the book value of any REO Property as of the close of business
      on the last Business Day of the calendar month preceding the Distribution
      Date, and, cumulatively, the total number and cumulative principal balance
      of all REO Properties as of the close of business of the last day of the
      preceding due period;

                                     -105-
<PAGE>

            (x) the aggregate amount of Principal Prepayments made during the
      related Prepayment Period;

            (xi) the aggregate amount of Realized Losses incurred during the
      related Due Period and the cumulative amount of Realized Losses;

            (xii) the aggregate amount of Extraordinary Trust Fund Expenses
      withdrawn from the Master Servicer Collection Account for such
      Distribution Date;

            (xiii) the Class Certificate Balance or Notional Amount, as
      applicable, of each Class of Certificates, after giving effect to the
      distributions made on such Distribution Date;

            (xiv) the aggregate amount of interest accrued at the related
      Pass-Through Rate with respect to each Class during the related Interest
      Accrual Period and the respective portions thereof, if any, remaining
      unpaid following the distributions made in respect of such Certificates on
      such Distribution Date;

            (xv) the aggregate amount of any Prepayment Interest Shortfalls for
      such Distribution Date as determined separately for each Loan Group, to
      the extent not covered by Compensating Interest Payments by the related
      Servicer or the Master Servicer pursuant to the related Servicing
      Agreement or Section 6.06;

            (xvi) the Group I Available Funds, Group II Available Funds, Group
      III Available Funds, Group IV Available Funds and Group V Available Funds;

            (xvii) the amount, if any, of any Basis Risk Shortfall Amounts paid
      to the Class I-A Certificates

            (xviii) the Pass-Through Rate for each Class of Certificates for
      such Distribution Date; and

            (xix) the aggregate Stated Principal Balance of Group I Mortgage
      Loans, Group II Mortgage Loans, Group III Mortgage Loans, Group IV
      Mortgage Loans and Group V Mortgage Loans purchased by the Seller during
      the related Due Period and indicating the Section of this Agreement
      requiring or allowing the purchase of each such Group I Mortgage Loan,
      Group II Mortgage Loan, Group III Mortgage Loan, Group IV Mortgage Loan
      and Group V Mortgage Loan.

      The information set forth above shall be calculated or reported, as the
case may be, by the Securities Administrator, based solely on, and to the extent
of, information provided to the Securities Administrator by the Master Servicer.
The Securities Administrator may conclusively rely on such information and shall
not be required to confirm, verify or recalculate any such information.

      The Securities Administrator may make available each month, to any
interested party, the Monthly Statement to Certificateholders via the Securities
Administrator's website initially located at "www.ctslink.com." Assistance in
using the website can be obtained by calling the

                                     -106-
<PAGE>

Securities Administrator's customer service desk at (301) 815-6600. Parties that
are unable to use the above distribution option are entitled to have a paper
copy mailed to them via first class mail by calling the customer service desk
and indicating such. The Securities Administrator shall have the right to change
the way such reports are distributed in order to make such distribution more
convenient and/or more accessible to the parties, and the Securities
Administrator shall provide timely and adequate notification to all parties
regarding any such change.

      (b) By January 30 of each year beginning in 2007, if so requested in
writing, the Securities Administrator will furnish such report to each Holder of
the Certificates of record at any time during the prior calendar year as to the
aggregate of amounts reported pursuant to subclauses (a)(ii) and (a)(v) above
with respect to the Certificates, plus information with respect to the amount of
servicing compensation and such other customary information as the Securities
Administrator may determine to be necessary and/or to be required by the
Internal Revenue Service or by a federal or state law or rules or regulations to
enable such Holders to prepare their tax returns for such calendar year. Such
obligations shall be deemed to have been satisfied to the extent that
substantially comparable information shall be provided by the Securities
Administrator pursuant to the requirements of the Code.

      Section 6.05 Monthly Advances. If the Monthly Payment on a Mortgage Loan
that was due on a related Due Date and is delinquent other than as a result of
application of the Relief Act and for which the related Servicer was required to
make an advance pursuant to the related Servicing Agreement exceeds the amount
deposited in the Master Servicer Collection Account that will be used for a
Monthly Advance with respect to such Mortgage Loan, the Master Servicer will
deposit in the Master Servicer Collection Account not later than the
Distribution Account Deposit Date immediately preceding the related Distribution
Date an amount equal to such deficiency, net of the Servicing Fee for such
Mortgage Loan, except to the extent the Master Servicer determines any such
Monthly Advance to be nonrecoverable from Liquidation Proceeds, Insurance
Proceeds or future payments on the Mortgage Loan for which such Monthly Advance
was made. If the Master Servicer has not deposited the amount described above as
of the related Distribution Account Deposit Date, the Trustee will, subject to
applicable law and its determination of recoverability, deposit in the Master
Servicer Collection Account not later than the related Distribution Date, an
amount equal to the remaining deficiency as of the Distribution Account Deposit
Date. Subject to the foregoing, the Master Servicer shall continue to make such
Monthly Advances through the date that the related Servicer is required to do so
under its Servicing Agreement. If applicable, on the Distribution Account
Deposit Date, the Master Servicer shall present an Officer's Certificate to the
Securities Administrator (i) stating that the Master Servicer elects not to make
a Monthly Advance in a stated amount and (ii) detailing the reason it deems the
advance to be nonrecoverable.

      Section 6.06 Compensating Interest Payments. The Master Servicer shall
deposit in the Master Servicer Collection Account not later than each
Distribution Account Deposit Date an amount equal to the aggregate amounts
required to be paid by the Servicers under the Servicing Agreements with respect
to subclause (a) of the definition of Prepayment Interest Shortfall with respect
to the Mortgage Loans for the related Distribution Date, and not so paid by the
related Servicers (such amount, the "Compensating Interest Payment"). The Master
Servicer shall not be entitled to any reimbursement of any Compensating Interest
Payment; provided, however, the

                                     -107-
<PAGE>

aggregate compensating interest payments made by the Master Servicer shall not
exceed the Master Servicing Compensation.

                                     -108-
<PAGE>

                                  ARTICLE VII
                      THE MASTER SERVICER AND THE DEPOSITOR

      Section 7.01 Liabilities of the Master Servicer. The Master Servicer shall
be liable in accordance herewith only to the extent of the obligations
specifically imposed upon and undertaken by the Master Servicer, as the case may
be, herein. The Depositor shall be liable in accordance herewith only to the
extent of the obligations specifically imposed upon and undertaken by the
Depositor.

      Section 7.02 Merger or Consolidation of the Master Servicer.

      (a) Each of the Master Servicer and the Depositor will keep in full force
and effect its existence, rights and franchises as a corporation under the laws
of the state of its incorporation, and will obtain and preserve its
qualification to do business as a foreign corporation in each jurisdiction in
which such qualification is or shall be necessary to protect the validity and
enforceability of this Agreement, the Certificates or any of the Mortgage Loans
and to perform its duties under this Agreement.

      (b) Any Person into which the Master Servicer or the Depositor may be
merged or consolidated, or any corporation resulting from any merger or
consolidation to which the Master Servicer shall be a party, or any Person
succeeding to the business of the Master Servicer, shall be the successor of the
Master Servicer hereunder, without the execution or filing of any paper or
further act on the part of any of the parties hereto, anything herein to the
contrary notwithstanding.

      Section 7.03 Indemnification from the Master Servicer and the Depositor.

      (a) The Master Servicer agrees to indemnify the Indemnified Persons for,
and to hold them harmless against, any loss, liability or expense (including
reasonable legal fees and disbursements of counsel) incurred on their part that
may be sustained in connection with, arising out of, or relating to, any claim
or legal action (including any pending or threatened claim or legal action)
relating to this Agreement or the Certificates (i) related to the Master
Servicer's failure to perform its duties in compliance with this Agreement
(except as any such loss, liability or expense shall be otherwise reimbursable
pursuant to this Agreement) or (ii) incurred by reason of the Master Servicer's
willful misfeasance, bad faith or gross negligence in the performance of duties
hereunder or by reason of reckless disregard of obligations and duties
hereunder, provided, in each case, that with respect to any such claim or legal
action (or pending or threatened claim or legal action), the Trustee or the
Securities Administrator shall have given the Master Servicer and the Depositor
written notice of such claim or legal action promptly after the Trustee or the
Securities Administrator shall have received knowledge thereof. This indemnity
shall survive the resignation or removal of the Trustee, Master Servicer or the
Securities Administrator and the termination of this Agreement.

      (b) The Depositor will indemnify any Indemnified Person for any loss,
liability or expense of any Indemnified Person not otherwise referred to in
Subsection (a) above.

                                     -109-
<PAGE>

      Section 7.04 Limitations on Liability of the Master Servicer and Others.
Subject to the obligation of the Master Servicer to indemnify the Indemnified
Persons pursuant to Section 7.03:

      (a) Neither the Master Servicer nor any of the directors, officers,
employees or agents of the Master Servicer shall be under any liability to the
Indemnified Persons, the Depositor, the Issuing Entity or the Certificateholders
for taking any action or for refraining from taking any action in good faith
pursuant to this Agreement, or for errors in judgment; provided, however, that
this provision shall not protect the Master Servicer or any such Person against
any breach of warranties or representations made herein or any liability which
would otherwise be imposed by reason of such Person's willful misfeasance, bad
faith or gross negligence in the performance of duties or by reason of reckless
disregard of obligations and duties hereunder.

      (b) The Master Servicer and any director, officer, employee or agent of
the Master Servicer may rely in good faith on any document of any kind prima
facie properly executed and submitted by any Person respecting any matters
arising hereunder.

      (c) The Master Servicer, the Custodian and any director, officer, employee
or agent of the Master Servicer or the Custodian shall be indemnified by the
Issuing Entity and held harmless thereby against any loss, liability or expense
(including reasonable legal fees and disbursements of counsel) incurred on their
part that may be sustained in connection with, arising out of, or related to,
any claim or legal action (including any pending or threatened claim or legal
action) relating to this Agreement, the Certificates or any Servicing Agreement
(except to the extent that the Master Servicer or the Custodian, as the case may
be, is indemnified by a Servicer thereunder), other than (i) any such loss,
liability or expense related to the Master Servicer's failure to perform its
duties in compliance with this Agreement (except as any such loss, liability or
expense shall be otherwise reimbursable pursuant to this Agreement), or to the
Custodian's failure to perform its duties under the Custodial Agreement,
respectively, or (ii) any such loss, liability or expense incurred by reason of
the Master Servicer's or the Custodian's willful misfeasance, bad faith or gross
negligence in the performance of duties hereunder or under the Custodial
Agreement, as applicable, or by reason of reckless disregard of obligations and
duties hereunder or under the Custodial Agreement, as applicable.

      (d) The Master Servicer shall not be under any obligation to appear in,
prosecute or defend any legal action that is not incidental to its duties under
this Agreement and that in its opinion may involve it in any expense or
liability; provided, however, the Master Servicer may in its discretion,
undertake any such action which it may deem necessary or desirable with respect
to this Agreement and the rights and duties of the parties hereto and the
interests of the Certificateholders hereunder. In such event, the legal expenses
and costs of such action and any liability resulting therefrom shall be
expenses, costs and liabilities of the Issuing Entity, and the Master Servicer
shall be entitled to be reimbursed therefor out of the Master Servicer
Collection Account as provided by Section 4.03. Nothing in this Subsection
7.04(d) shall affect the Master Servicer's obligation to supervise, or to take
such actions as are necessary to ensure, the servicing and administration of the
Mortgage Loans pursuant to Subsection 3.01(a).

      (e) In taking or recommending any course of action pursuant to this
Agreement, unless specifically required to do so pursuant to this Agreement, the
Master Servicer shall not be required to investigate or make recommendations
concerning potential liabilities which the

                                     -110-
<PAGE>

Issuing Entity might incur as a result of such course of action by reason of the
condition of the Mortgaged Properties but shall give notice to the Trustee if it
has notice of such potential liabilities.

      (f) The Master Servicer shall not be liable for any acts or omissions of
any Servicer, except as otherwise expressly provided herein.

      Section 7.05 Master Servicer Not to Resign. Except as provided in Section
7.07, the Master Servicer shall not resign from the obligations and duties
hereby imposed on it except upon a determination that any such duties hereunder
are no longer permissible under applicable law and such impermissibility cannot
be cured. Any such determination permitting the resignation of the Master
Servicer shall be evidenced by an Opinion of Independent Counsel to such effect
delivered to the Trustee. No such resignation by the Master Servicer shall
become effective until MLML or the Trustee or a successor to the Master Servicer
reasonably satisfactory to the Trustee shall have assumed the responsibilities
and obligations of the Master Servicer in accordance with Section 8.02 hereof.
The Trustee shall notify the Rating Agencies of the resignation of the Master
Servicer. If the Master Servicer and the Securities Administrator are the same
entity, then at any time the Master Servicer is terminated as master servicer,
the Securities Administrator shall likewise be removed as securities
administrator.

      Section 7.06 Successor Master Servicer. In connection with the appointment
of any successor Master Servicer or the assumption of the duties of the Master
Servicer, MLML or the Trustee may make such arrangements for the compensation of
such successor master servicer out of payments on the Mortgage Loans as MLML or
the Trustee and such successor master servicer shall agree. If the successor
master servicer does not agree that such market value is a fair price, such
successor master servicer shall obtain two quotations of market value from third
parties actively engaged in the servicing of single-family mortgage loans.

      Section 7.07 Sale and Assignment of Master Servicing. The Master Servicer
may sell and assign its rights and delegate its duties and obligations in its
entirety as Master Servicer under this Agreement; provided, however, that: (i)
the purchaser or transferee accepting such assignment and delegation (a) shall
be a Person which shall be qualified to service mortgage loans for Fannie Mae or
Freddie Mac; (b) shall have a net worth of not less than $10,000,000 (unless
otherwise approved by each Rating Agency pursuant to clause (ii) below); (c)
shall be reasonably satisfactory to the Trustee (as evidenced in a writing
signed by the Trustee); and (d) shall execute and deliver to the Trustee an
agreement, in form and substance reasonably satisfactory to the Trustee, which
contains an assumption by such Person of the due and punctual performance and
observance of each covenant and condition to be performed or observed by it as
master servicer under this Agreement, any custodial agreement from and after the
effective date of such agreement; (ii) each Rating Agency shall be given prior
written notice of the identity of the proposed successor to the Master Servicer
and each Rating Agency's rating of the Certificates in effect immediately prior
to such assignment, sale and delegation will not be downgraded, qualified or
withdrawn as a result of such assignment, sale and delegation, as evidenced by a
letter to such effect delivered to the Master Servicer and the Trustee; and
(iii) the Master Servicer assigning and selling the master servicing shall
deliver to the Trustee an Officer's Certificate and an Opinion of Independent
Counsel, each stating that all conditions precedent to such action under this
Agreement have been completed and such action is permitted by and complies with

                                     -111-
<PAGE>

the terms of this Agreement. No such assignment or delegation shall affect any
liability of the Master Servicer arising prior to the effective date thereof.

                                  ARTICLE VIII
                                     DEFAULT

      Section 8.01 Events of Default. "Event of Default," wherever used herein,
means any one of the following events (whatever the reason for such Event of
Default and whether it shall be voluntary or involuntary or be effected by
operation of law or pursuant to any judgment, decree or order of any court or
any order, rule or regulation of any administrative or governmental body) and
only with respect to the defaulting Master Servicer:

            (i) The Master Servicer fails to cause to be deposited in the
      Distribution Account any amount so required to be deposited pursuant to
      this Agreement, and such failure continues unremedied for a period of
      three Business Days after the date upon which written notice of such
      failure, requiring the same to be remedied, shall have been given to the
      Master Servicer; or

            (ii) The Master Servicer fails to observe or perform in any material
      respect any other material covenants and agreements set forth in this
      Agreement to be performed by it, which covenants and agreements materially
      affect the rights of Certificateholders, and such failure continues
      unremedied for a period of 60 days after the date on which written notice
      of such failure, properly requiring the same to be remedied, shall have
      been given to the Master Servicer by the Trustee or to the Master Servicer
      and the Trustee by the Holders of Certificates evidencing Percentage
      Interests aggregating not less than 25% of the Trust Fund; or

            (iii) There is entered against the Master Servicer a decree or order
      by a court or agency or supervisory authority having jurisdiction in the
      premises for the appointment of a conservator, receiver or liquidator in
      any insolvency, readjustment of debt, marshaling of assets and liabilities
      or similar proceedings, or for the winding up or liquidation of its
      affairs, and the continuance of any such decree or order is unstayed and
      in effect for a period of 60 consecutive days, or an involuntary case is
      commenced against the Master Servicer under any applicable insolvency or
      reorganization statute and the petition is not dismissed within 60 days
      after the commencement of the case; or

            (iv) The Master Servicer consents to the appointment of a
      conservator or receiver or liquidator in any insolvency, readjustment of
      debt, marshaling of assets and liabilities or similar proceedings of or
      relating to the Master Servicer or substantially all of its property; or
      the Master Servicer admits in writing its inability to pay its debts
      generally as they become due, files a petition to take advantage of any
      applicable insolvency or reorganization statute, makes an assignment for
      the benefit of its creditors, or voluntarily suspends payment of its
      obligations; or

            (v) The Master Servicer assigns or delegates its duties or rights
      under this Agreement in contravention of the provisions permitting such
      assignment or delegation under Sections 7.05 or 7.07.

                                     -112-
<PAGE>

In each and every such case, so long as such Event of Default with respect to
the Master Servicer shall not have been remedied, either the Trustee or the
Holders of Certificates evidencing Percentage Interests aggregating not less
than 51% of the Class Certificate Balance of the Certificates, by notice in
writing to the Master Servicer (and to the Trustee if given by such
Certificateholders), with a copy to the Rating Agencies, and with the consent of
the Seller, may terminate all of the rights and obligations (but not the
liabilities) of the Master Servicer under this Agreement and in and to the
Mortgage Loans and/or the REO Property serviced by the Master Servicer and the
proceeds thereof. Upon the receipt by the Master Servicer of the written notice,
all authority and power of the Master Servicer under this Agreement, whether
with respect to the Certificates, the Mortgage Loans, REO Property or under any
other related agreements (but only to the extent that such other agreements
relate to the Mortgage Loans or related REO Property) shall, subject to Section
8.02, automatically and without further action pass to and be vested in the
Trustee pursuant to this Section 8.01; and, without limitation, the Trustee is
hereby authorized and empowered to execute and deliver, on behalf of the Master
Servicer as attorney-in-fact or otherwise, any and all documents and other
instruments and to do or accomplish all other acts or things necessary or
appropriate to effect the purposes of such notice of termination, whether to
complete the transfer and endorsement or assignment of the Mortgage Loans and
related documents, or otherwise. The Master Servicer agrees to cooperate with
the Trustee in effecting the termination of the Master Servicer's rights and
obligations hereunder, including, without limitation, the transfer to the
Trustee of (i) the property and amounts which are then or should be part of the
Issuing Entity or which thereafter become part of the Issuing Entity; and (ii)
originals or copies of all documents of the Master Servicer reasonably requested
by the Trustee to enable it to assume the Master Servicer's duties thereunder.
In addition to any other amounts which are then, or, notwithstanding the
termination of its activities under this Agreement, may become payable to the
Master Servicer under this Agreement, the Master Servicer shall be entitled to
receive, out of any amount received on account of a Mortgage Loan or related REO
Property, that portion of such payments which it would have received as
reimbursement under this Agreement if notice of termination had not been given.
The termination of the rights and obligations of the Master Servicer shall not
affect any obligations incurred by the Master Servicer prior to such
termination.

      Section 8.02 Trustee to Act; Appointment of Successor.

      (a) Upon the receipt by the Master Servicer of a notice of termination
pursuant to Section 8.01 or an Opinion of Independent Counsel pursuant to
Section 7.05 to the effect that the Master Servicer is legally unable to act or
to delegate its duties to a Person which is legally able to act, the Trustee
shall automatically become the successor in all respects to the Master Servicer
in its capacity under this Agreement and the transactions set forth or provided
for herein and shall thereafter be subject to all the responsibilities, duties,
liabilities and limitations on liabilities relating thereto placed on the Master
Servicer by the terms and provisions hereof; provided, however, that MLML shall
have the right to either (a) immediately assume the duties of the Master
Servicer or (b) select a successor master servicer; provided further, however,
that the Trustee shall have no obligation whatsoever with respect to any
liability (other than advances deemed recoverable and not previously made)
incurred by the Master Servicer at or prior to the time of termination. As
compensation therefor, the Trustee shall be entitled to all funds relating to
the Mortgage Loans which the Master Servicer would have been entitled to retain
if the Master Servicer had continued to act hereunder, except for those amounts
due the Master

                                     -113-
<PAGE>

Servicer as reimbursement permitted under this Agreement for advances previously
made or expenses previously incurred. Notwithstanding the above, or anything
herein to the contrary, the Trustee, if it becomes Master Servicer, shall have
no responsibility or obligation (i) to repurchase or substitute any Mortgage
Loan, (ii) for any representation or warranty of the Master Servicer hereunder,
and (iii) for any act or omission of either a predecessor or successor Master
Servicer other than the Trustee. The Trustee may conduct any activity required
of it as Master Servicer hereunder through an Affiliate or through an agent.
Neither the Trustee (as successor Master Servicer) nor any other successor
Master Servicer shall be deemed to be in default hereunder due to any act or
omission of a predecessor Master Servicer, including but not limited to failure
to timely deliver to the Trustee distribution instructions, any funds required
to be deposited to the Trust Fund, or any breach of its duty to cooperate with a
transfer of master servicing. Neither the Trustee nor any other successor Master
Servicer shall be deemed to be in default hereunder by reason of any failure to
make, or any delay in making, any distribution hereunder or any portion thereof
or any failure to perform, or any delay in performing, any duties or
responsibilities hereunder, in either case caused solely by the failure of the
Master Servicer to deliver or provide, or any delay in delivering or providing,
any cash, information, documents or records required to be provided to it by the
Master Servicer. Notwithstanding the above, the Trustee may, if it shall be
unwilling so to act, or shall, if it is legally unable so to act, appoint or
petition a court of competent jurisdiction to appoint, any established housing
and home finance institution which is a Fannie Mae- or Freddie Mac-approved
servicer, and with respect to a successor to the Master Servicer only, having a
net worth of not less than $10,000,000 and meeting such other standards for a
successor Master Servicer as are set forth in this Agreement, as the successor
to the Master Servicer hereunder in the assumption of all or any part of the
responsibilities, duties or liabilities of the Master Servicer hereunder.
Pending appointment of a successor to the Master Servicer hereunder, the Trustee
shall act in such capacity as hereinabove provided. In connection with such
appointment and assumption, the Trustee may make such arrangements for the
compensation of such successor out of payments on the Mortgage Loans as it and
such successor shall agree; provided, however, in the event that the provisions
of Section 7.06 shall apply, no such compensation shall be in excess of that
permitted the Trustee under this Subsection 8.02(a), and that such successor
shall undertake and assume the obligations of the Trustee to pay compensation to
any third Person acting as an agent or independent contractor in the performance
of master servicing responsibilities hereunder. The Trustee and such successor
shall take such action, consistent with this Agreement, as shall be necessary to
effectuate any such succession.

      (b) If the Trustee shall succeed to any duties of the Master Servicer
respecting the Mortgage Loans as provided herein, it shall do so in a separate
capacity and not in its capacity as Trustee and, accordingly, the provisions of
Article IX shall be inapplicable to the Trustee in its duties as the successor
to the Master Servicer in the servicing of the Mortgage Loans (although such
provisions shall continue to apply to the Trustee in its capacity as Trustee);
the provisions of Article VII, however, shall apply to it in its capacity as
successor master servicer.

                                     -114-
<PAGE>

      Section 8.03 Notification to Certificateholders. Upon any termination or
appointment of a successor to the Master Servicer, the Trustee shall give prompt
written notice thereof to Certificateholders at their respective addresses
appearing in the Certificate Register and to the Rating Agencies.

      Section 8.04 Waiver of Defaults. The Trustee shall transmit by mail to all
Certificateholders, within 60 days after the occurrence of any Event of Default
known to the Trustee, unless such Event of Default shall have been cured, notice
of each such Event of Default hereunder known to the Trustee. The Holders of
Certificates evidencing Percentage Interests aggregating not less than 51% of
the Class Certificate Balance of the Certificates may, on behalf of all
Certificateholders, waive any default by the Master Servicer in the performance
of its obligations hereunder and the consequences thereof, except a default in
the making of or the causing to be made any required distribution on the
Certificates. Upon any such waiver of a past default, such default shall be
deemed to cease to exist, and any Event of Default arising therefrom shall be
deemed to have been timely remedied for every purpose of this Agreement. No such
waiver shall extend to any subsequent or other default or impair any right
consequent thereon except to the extent expressly so waived. The Trustee shall
give notice of any such waiver to the Rating Agencies.

      Section 8.05 List of Certificateholders. Upon reasonable, prior written
request of three or more Certificateholders of record, for purposes of
communicating with other Certificateholders with respect to their rights under
this Agreement, the Trustee will afford such Certificateholders access during
business hours to the most recent list of Certificateholders held by the
Trustee.

                                   ARTICLE IX
                           CONCERNING THE TRUSTEE AND
                          THE SECURITIES ADMINISTRATOR

      Section 9.01 Duties of Trustee.

      (a) The Trustee, prior to the occurrence of an Event of Default and after
the curing or waiver of all Events of Default which may have occurred, and the
Securities Administrator each undertake to perform such duties and only such
duties as are specifically set forth in this Agreement as duties of the Trustee
and the Securities Administrator, respectively. If an Event of Default has
occurred and has not been cured or waived, the Trustee shall exercise such of
the rights and powers vested in it by this Agreement, and subject to Section
8.02(b) use the same degree of care and skill in their exercise, as a prudent
person would exercise under the circumstances in the conduct of his own affairs.

      (b) Upon receipt of all resolutions, certificates, statements, opinions,
reports, documents, orders or other instruments which are specifically required
to be furnished to the Trustee and the Securities Administrator pursuant to any
provision of this Agreement, the Trustee and the Securities Administrator,
respectively, shall examine them to determine whether they are in the form
required by this Agreement; provided, however, that neither the Trustee nor the
Securities Administrator shall be responsible for the accuracy or content of any
resolution,

                                     -115-
<PAGE>

certificate, statement, opinion, report, document, order or other instrument
furnished by the Master Servicer; provided, further, that neither the Trustee
nor the Securities Administrator shall be responsible for the accuracy or
verification of any calculation provided to it pursuant to this Agreement. If
any such instrument is found not to conform to the requirements of this
Agreement in a material manner, the Trustee shall take such action as it deems
appropriate to have the instrument corrected and if the instrument is not
corrected to its satisfaction, the Trustee will provide notice thereof to the
Certificateholders and take such further action as directed by the
Certificateholders.

      (c) On each Distribution Date, the Securities Administrator shall make
monthly distributions and the final distribution to the Certificateholders from
funds in the Distribution Account as provided in Sections 6.01 and 10.01 herein
based solely on the report of the Master Servicer or the Servicers.

      (d) No provision of this Agreement shall be construed to relieve the
Trustee or the Securities Administrator from liability for its own negligent
action, its own negligent failure to act or its own willful misconduct;
provided, however, that:

            (i) Prior to the occurrence of an Event of Default, and after the
      curing or waiver of all such Events of Default which may have occurred,
      the duties and obligations of the Trustee and the Securities Administrator
      shall be determined solely by the express provisions of this Agreement,
      neither the Trustee nor the Securities Administrator shall be liable
      except for the performance of their respective duties and obligations as
      are specifically set forth in this Agreement, no implied covenants or
      obligations shall be read into this Agreement against the Trustee or the
      Securities Administrator and, in the absence of bad faith on the part of
      the Trustee or the Securities Administrator, respectively, the Trustee or
      the Securities Administrator, respectively, may conclusively rely, as to
      the truth of the statements and the correctness of the opinions expressed
      therein, upon any certificates or opinions furnished to the Trustee or the
      Securities Administrator, respectively, and conforming to the requirements
      of this Agreement;

            (ii) Neither the Trustee nor the Securities Administrator shall be
      liable in its individual capacity for an error of judgment made in good
      faith by a Responsible Officer or Responsible Officers of the Trustee or
      an officer of the Securities Administrator, respectively, unless it shall
      be proved that the Trustee or the Securities Administrator, respectively,
      was negligent in ascertaining the pertinent facts;

            (iii) Neither the Trustee nor the Securities Administrator shall be
      liable with respect to any action taken, suffered or omitted to be taken
      by it in good faith in accordance with the directions of the Holders of
      Certificates evidencing Percentage Interests aggregating not less than 25%
      of the Class Certificate Balance of the Certificates, if such action or
      non-action relates to the time, method and place of conducting any
      proceeding for any remedy available to the Trustee or the Securities
      Administrator, respectively, or exercising any trust or other power
      conferred upon the Trustee or the Securities Administrator, respectively,
      under this Agreement;

                                     -116-
<PAGE>

            (iv) The Trustee shall not be required to take notice or be deemed
      to have notice or knowledge of any default or Event of Default unless a
      Responsible Officer of the Trustee's Corporate Trust Office shall have
      actual knowledge thereof. In the absence of such notice, the Trustee may
      conclusively assume there is no such default or Event of Default;

            (v) The Trustee shall not in any way be liable by reason of any
      insufficiency in any Account held by or in the name of Trustee unless it
      is determined by a court of competent jurisdiction that the Trustee's
      gross negligence or willful misconduct was the primary cause of such
      insufficiency (except to the extent that the Trustee is obligor and has
      defaulted thereon);

            (vi) Anything in this Agreement to the contrary notwithstanding, in
      no event shall the Trustee or the Securities Administrator be liable for
      special, indirect or consequential loss or damage of any kind whatsoever
      (including but not limited to lost profits), even if the Trustee or the
      Securities Administrator, respectively, has been advised of the likelihood
      of such loss or damage and regardless of the form of action; and

            (vii) None of the Securities Administrator, the Depositor, the
      Master Servicer, any Servicer or the Trustee shall be responsible for the
      acts or omissions of the other, it being understood that this Agreement
      shall not be construed to render them partners, joint venturers or agents
      of one another.

      Neither the Trustee nor the Securities Administrator shall be required to
expend or risk its own funds or otherwise incur financial liability in the
performance of any of its duties hereunder, or in the exercise of any of its
rights or powers, if there is reasonable ground for believing that the repayment
of such funds or adequate indemnity against such risk or liability is not
reasonably assured to it, and none of the provisions contained in this Agreement
shall in any event require the Trustee or the Securities Administrator to
perform, or be responsible for the manner of performance of, any of the
obligations of the Master Servicer hereunder or under the Servicing Agreements,
except during such time, if any, as the Trustee shall be the successor to, and
be vested with the rights, duties, powers and privileges of, the Master Servicer
in accordance with the terms of this Agreement.

      (e) All funds received by the Master Servicer and the Securities
Administrator and required to be deposited in the Master Servicer Collection
Account or Distribution Account pursuant to this Agreement will be promptly so
deposited by the Master Servicer and the Securities Administrator.

      (f) Except for those actions that the Trustee or the Securities
Administrator is required to take hereunder, neither the Trustee nor the
Securities Administrator shall have any obligation or liability to take any
action or to refrain from taking any action hereunder in the absence of written
direction as provided hereunder.

                                     -117-
<PAGE>

      Section 9.02 Certain Matters Affecting the Trustee and the Securities
Administrator. Except as otherwise provided in Section 9.01:

            (i) The Trustee and the Securities Administrator may rely and shall
      be protected in acting or refraining from acting in reliance on any
      resolution, certificate of a Depositor, Master Servicer or Servicer,
      certificate of auditors or any other certificate, statement, instrument,
      opinion, report, notice, request, consent, order, appraisal, bond or other
      paper or document believed by it to be genuine and to have been signed or
      presented by the proper party or parties;

            (ii) The Trustee and the Securities Administrator may consult with
      counsel and any advice of such counsel or any Opinion of Counsel shall be
      full and complete authorization and protection with respect to any action
      taken or suffered or omitted by it hereunder in good faith and in
      accordance with such advice or Opinion of Counsel;

            (iii) Neither the Trustee nor the Securities Administrator shall be
      under any obligation to exercise any of the trusts or powers vested in it
      by this Agreement, other than its obligation to give notices pursuant to
      this Agreement, or to institute, conduct or defend any litigation
      hereunder or in relation hereto at the request, order or direction of any
      of the Certificateholders pursuant to the provisions of this Agreement,
      unless such Certificateholders shall have offered to the Trustee
      reasonable security or indemnity against the costs, expenses and
      liabilities which may be incurred therein or thereby. Nothing contained
      herein shall, however, relieve the Trustee of the obligation, upon the
      occurrence of an Event of Default of which a Responsible Officer of the
      Trustee's Corporate Trust Office has actual knowledge (which has not been
      cured or waived), subject to Section 8.02(b), to exercise such of the
      rights and powers vested in it by this Agreement, and to use the same
      degree of care and skill in their exercise, as a prudent person would
      exercise under the circumstances in the conduct of his own affairs;

            (iv) Prior to the occurrence of an Event of Default hereunder and
      after the curing or waiver of all Events of Default which may have
      occurred, neither the Trustee nor the Securities Administrator shall be
      liable in its individual capacity for any action taken, suffered or
      omitted by it in good faith and believed by it to be authorized or within
      the discretion or rights or powers conferred upon it by this Agreement;

            (v) Neither the Trustee nor the Securities Administrator shall be
      bound to make any investigation into the facts or matters stated in any
      resolution, certificate, statement, instrument, opinion, report, notice,
      request, consent, order, approval, bond or other paper or document, unless
      requested in writing to do so by Holders of Certificates evidencing
      Percentage Interests aggregating not less than 25% of the Class
      Certificate Balance of the Certificates and provided that the payment
      within a reasonable time to the Trustee or the Securities Administrator,
      as applicable, of the costs, expenses or liabilities likely to be incurred
      by it in the making of such investigation is, in the opinion of the
      Trustee or the Securities Administrator, as applicable, reasonably assured
      to the Trustee or the Securities Administrator, as applicable, by the
      security afforded to it by the terms of this Agreement. The Trustee or the
      Securities Administrator may require reasonable indemnity against such
      expense or liability as a condition to taking any such action. The

                                     -118-
<PAGE>

      reasonable expense of every such examination shall be paid by the
      Certificateholders requesting the investigation;

            (vi) The Trustee and the Securities Administrator may execute any of
      the trusts or powers hereunder or perform any duties hereunder either
      directly or through Affiliates, agents or attorneys; provided, however,
      that the Trustee may not appoint any agent to perform its custodial
      functions with respect to the Mortgage Files or paying agent functions
      under this Agreement without the express written consent of the Securities
      Administrator, which consent will not be unreasonably withheld. Neither
      the Trustee nor the Securities Administrator shall be liable or
      responsible for the misconduct or negligence of any of the Trustee's or
      the Securities Administrator's agents or attorneys or a custodian or
      paying agent appointed hereunder by the Trustee or the Securities
      Administrator with due care and, when required, with the consent of the
      Securities Administrator;

            (vii) Should the Trustee or the Securities Administrator deem the
      nature of any action required on its part, other than a payment or
      transfer under Subsection 4.01(b) or Section 4.02, to be unclear, the
      Trustee or the Securities Administrator, respectively, may require prior
      to such action that it be provided by the Depositor with reasonable
      further instructions;

            (viii) The right of the Trustee or the Securities Administrator to
      perform any discretionary act enumerated in this Agreement shall not be
      construed as a duty, and neither the Trustee nor the Securities
      Administrator shall be accountable for other than its negligence or
      willful misconduct in the performance of any such act;

            (ix) Neither the Trustee nor the Securities Administrator shall be
      required to give any bond or surety with respect to the execution of the
      trust created hereby or the powers granted hereunder, except as provided
      in Subsection 9.07; and

            (x) Neither the Trustee nor the Securities Administrator shall have
      any duty to conduct any affirmative investigation as to the occurrence of
      any condition requiring the repurchase of any Mortgage Loan by the Seller
      pursuant to this Agreement or the Mortgage Loan Purchase Agreement, as
      applicable, or the eligibility of any Mortgage Loan for purposes of this
      Agreement.

            (xi) Any permissive right of the Trustee hereunder shall not be
      construed as a duty.

      Section 9.03 Trustee and Securities Administrator Not Liable for
Certificates or Mortgage Loans. The recitals contained herein and in the
Certificates (other than the signature and countersignature of the Securities
Administrator on the Certificates) shall be taken as the statements of the
Depositor, and neither the Trustee nor the Securities Administrator shall have
any responsibility for their correctness. Neither the Trustee nor the Securities
Administrator makes any representation as to the validity or sufficiency of the
Certificates (other than the signature and countersignature of the Securities
Administrator on the Certificates) or of any Mortgage Loan except as expressly
provided in Sections 2.02 and 2.05 hereof; provided,

                                     -119-
<PAGE>

however, that the foregoing shall not relieve the Trustee or the Custodian of
the obligation to review the Mortgage Files pursuant to Sections 2.02 and 2.04.
The Securities Administrator's signature and countersignature (or
countersignature of its agent) on the Certificates shall be solely in its
capacity as Securities Administrator of the Trust Fund and shall not constitute
the Certificates an obligation of the Securities Administrator in any other
capacity. Neither the Trustee or the Securities Administrator shall be
accountable for the use or application by the Depositor of any of the
Certificates or of the proceeds of such Certificates, or for the use or
application of any funds paid to the Depositor with respect to the Mortgage
Loans. Subject to the provisions of Section 2.05, neither the Trustee nor the
Securities Administrator shall be responsible for the legality or validity of
this Agreement or any document or instrument relating to this Agreement, the
validity of the execution of this Agreement or of any supplement hereto or
instrument of further assurance, or the validity, priority, perfection or
sufficiency of the security for the Certificates issued hereunder or intended to
be issued hereunder. Neither the Trustee nor the Securities Administrator shall
at any time have any responsibility or liability for or with respect to the
legality, validity and enforceability of any Mortgage or any Mortgage Loan, or
the perfection and priority of any Mortgage or the maintenance of any such
perfection and priority, or for or with respect to the sufficiency of the Trust
Fund or its ability to generate the payments to be distributed to
Certificateholders, under this Agreement. Neither the Trustee nor the Securities
Administrator shall have any responsibility for filing any financing or
continuation statement in any public office at any time or to otherwise perfect
or maintain the perfection of any security interest or lien granted to it
hereunder or to record this Agreement.

      Section 9.04 Trustee and Securities Administrator May Own Certificates.
The Trustee and the Securities Administrator in its individual capacity or in
any capacity other than as Trustee hereunder may become the owner or pledgee of
any Certificates with the same rights it would have if it were not Trustee or
the Securities Administrator, as applicable, and may otherwise deal with the
parties hereto.

      Section 9.05 Trustee's and Securities Administrator's Fees and Expenses.
The fees and expenses of the Trustee and the Securities Administrator shall be
paid by the Master Servicer in accordance with a side letter agreement. In
addition, the Trustee and the Securities Administrator will be entitled to
recover from the Master Servicer Collection Account pursuant to Section 4.03(b)
all reasonable out-of-pocket expenses, disbursements and advances and the
expenses of the Trustee and the Securities Administrator, respectively, in
connection with any Event of Default, any breach of this Agreement or any claim
or legal action (including any pending or threatened claim or legal action)
incurred or made by the Trustee or the Securities Administrator, respectively,
in the administration of the trusts hereunder (including the reasonable
compensation, expenses and disbursements of its counsel) except any such
expense, disbursement or advance as may arise from its negligence or intentional
misconduct or which is the responsibility of the Certificateholders or the Trust
Fund hereunder. If funds in the Master Servicer Collection Account are
insufficient therefor, the Trustee and the Securities Administrator shall
recover such expenses from the Depositor. Such compensation and reimbursement
obligation shall not be limited by any provision of law in regard to the
compensation of a trustee of an express trust.

      Section 9.06 Eligibility Requirements for Trustee and Securities
Administrator.

                                     -120-
<PAGE>

      (a) The Trustee and any successor Trustee and the Securities Administrator
and any successor Securities Administrator shall during the entire duration of
this Agreement be a state bank or trust company or a national banking
association organized and doing business under the laws of such state or the
United States of America, authorized under such laws to exercise corporate trust
powers, having a combined capital and surplus and undivided profits of at least
$40,000,000 or, in the case of a successor Trustee, $50,000,000, subject to
supervision or examination by federal or state authority and, in the case of the
Trustee, rated "BBB" or higher by S&P and "Aaa1" or higher by Moody's with
respect to their long-term rating and rated "BBB" or higher by S&P and "Baa1" or
higher by Moody's with respect to any outstanding long-term unsecured
unsubordinated debt, and, in the case of a successor Trustee or successor
Securities Administrator other than pursuant to Section 9.10, rated in one of
the two highest long-term debt categories of, or otherwise acceptable to, each
of the Rating Agencies. If the Trustee publishes reports of condition at least
annually, pursuant to law or to the requirements of the aforesaid supervising or
examining authority, then for the purposes of this Section 9.06 the combined
capital and surplus of such corporation shall be deemed to be its total equity
capital (combined capital and surplus) as set forth in its most recent report of
condition so published. In case at any time the Trustee or the Securities
Administrator shall cease to be eligible in accordance with the provisions of
this Section 9.06, the Trustee or the Securities Administrator shall resign
immediately in the manner and with the effect specified in Section 9.08.

      (b) In addition, the Securities Administrator (i) may not be an
Originator, Master Servicer, Servicer, the Depositor or an affiliate of the
Depositor unless the Securities Administrator is in an institutional trust
department of the relevant entity, (ii) must be authorized to exercise corporate
trust powers under the laws of its jurisdiction of organization, and (iii) must
be rated at least "A" by S&P or "A" Moody's. If no successor Securities
Administrator shall have been appointed and shall have accepted appointment
within 60 days after the Securities Administrator ceases to be the Securities
Administrator pursuant to Section 9.08, then the Trustee shall either (i)
perform the duties of the Securities Administrator pursuant to this Agreement
until such time as a new Securities Administrator is appointed or (ii) petition
a court of competent jurisdiction to appoint a successor securities
administrator. The Trustee shall notify the Rating Agencies of any change of
Securities Administrator.

      Section 9.07 Insurance. The Securities Administrator, at its own expense,
shall at all times maintain and keep in full force and effect: (i) fidelity
insurance, (ii) theft of documents insurance and (iii) forgery insurance (which
may be collectively satisfied by a "Financial Institution Bond" and/or a
"Bankers' Blanket Bond"). All such insurance shall be in amounts, with standard
coverage and subject to deductibles, as are customary for insurance typically
maintained by banks or their affiliates which act as custodians for
investor-owned mortgage pools. A certificate of an officer of the Securities
Administrator as to the Securities Administrator's compliance with this Section
9.07 shall be furnished to any Certificateholder upon reasonable written
request.

      Section 9.08 Resignation and Removal of the Trustee and Securities
Administrator.

      (a) The Trustee and the Securities Administrator may at any time resign
and be discharged from the trust hereby created by giving written notice thereof
to the Depositor and the Master Servicer, with a copy to the Rating Agencies.
Upon receiving such notice of resignation,

                                     -121-
<PAGE>

the Depositor shall promptly appoint a successor Trustee or successor Securities
Administrator, as applicable, by written instrument, in triplicate, one copy of
which instrument shall be delivered to each of the resigning Trustee or
Securities Administrator, as applicable, the successor Trustee or Securities
Administrator, as applicable. If no successor Trustee or Securities
Administrator shall have been so appointed and have accepted appointment within
30 days after the giving of such notice of resignation, the resigning Trustee or
Securities Administrator may petition any court of competent jurisdiction for
the appointment of a successor Trustee or Securities Administrator. If the
Securities Administrator and the Master Servicer are the same entity, then at
any time the Securities Administrator resigns or is removed as Securities
Administrator, the Master Servicer shall likewise be terminated as Master
Servicer.

      (b) If at any time the Trustee or the Securities Administrator shall cease
to be eligible in accordance with the provisions of Section 9.06 and shall fail
to resign after written request therefor by the Depositor or if at any time the
Trustee or the Securities Administrator shall become incapable of acting, or
shall be adjudged a bankrupt or insolvent, or a receiver of the Trustee or the
Securities Administrator, as applicable, or of its property shall be appointed,
or any public officer shall take charge or control of the Trustee or the
Securities Administrator, as applicable, or of its property or affairs for the
purpose of rehabilitation, conservation or liquidation, then the Depositor shall
promptly remove the Trustee, or shall be entitled to remove the Securities
Administrator, as applicable, and appoint a successor Trustee or Securities
Administrator, as applicable, by written instrument, in triplicate, one copy of
which instrument shall be delivered to each of the Trustee or Securities
Administrator, as applicable, so removed, the successor Trustee or Securities
Administrator, as applicable.

      (c) The Holders of Certificates evidencing Percentage Interests
aggregating not less than 51% of the Trust Fund may at any time remove the
Trustee or the Securities Administrator and appoint a successor Trustee or
Securities Administrator by written instrument or instruments, in quadruplicate,
signed by such Holders or their attorneys-in-fact duly authorized, one complete
set of which instruments shall be delivered to the Depositor, the Trustee, the
Securities Administrator (if the Trustee is removed), the Trustee (if the
Securities Administrator is removed), and the Trustee or Securities
Administrator so removed and the successor so appointed.

      (d) No resignation or removal of the Trustee or the Securities
Administrator and appointment of a successor Trustee or Securities Administrator
pursuant to any of the provisions of this Section 9.08 shall become effective
except upon appointment of and acceptance of such appointment by the successor
Trustee or Securities Administrator as provided in Section 9.09.

      Section 9.09 Successor Trustee and Successor Securities Administrator.

      (a) Any successor Trustee or Securities Administrator appointed as
provided in Section 9.08 shall execute, acknowledge and deliver to the
Depositor, the Master Servicer and its predecessor Trustee or Securities
Administrator an instrument accepting such appointment hereunder. The
resignation or removal of the predecessor Trustee or Securities Administrator
shall then become effective and such successor Trustee or Securities
Administrator, without any further act, deed or conveyance, shall become fully
vested with all the rights, powers, duties and obligations of its predecessor
hereunder, with like effect as if originally named as Trustee or

                                     -122-
<PAGE>

Securities Administrator herein. The predecessor Trustee or Securities
Administrator shall after payment of its outstanding fees and expenses promptly
deliver to the successor Trustee or Securities Administrator, as applicable, all
assets and records of the Trust held by it hereunder, and the Depositor and the
predecessor Trustee or Securities Administrator, as applicable, shall execute
and deliver such instruments and do such other things as may reasonably be
required for more fully and certainly vesting and confirming in the successor
Trustee or Securities Administrator, as applicable, all such rights, powers,
duties and obligations.

      (b) No successor Trustee or Securities Administrator shall accept
appointment as provided in this Section 9.09 unless at the time of such
acceptance such successor Trustee or Securities Administrator shall be eligible
under the provisions of Section 9.06.

      (c) Upon acceptance of appointment by a successor Trustee or Securities
Administrator as provided in this Section 9.09, the successor Trustee or
Securities Administrator shall mail notice of the succession of such Trustee or
Securities Administrator hereunder to all Certificateholders at their addresses
as shown in the Certificate Register and to the Rating Agencies. The Depositor
shall pay the cost of any mailing by the successor Trustee or Securities
Administrator.

      Section 9.10 Merger or Consolidation of Trustee or Securities
Administrator. Any state bank or trust company or national banking association
into which the Trustee or the Securities Administrator may be merged or
converted or with which it may be consolidated or any state bank or trust
company or national banking association resulting from any merger, conversion or
consolidation to which the Trustee or the Securities Administrator,
respectively, shall be a party, or any state bank or trust company or national
banking association succeeding to all or substantially all of the corporate
trust business of the Trustee or the Securities Administrator, respectively,
shall be the successor of the Trustee or the Securities Administrator,
respectively, hereunder, provided such state bank or trust company or national
banking association shall be eligible under the provisions of Section 9.06. Such
succession shall be valid without the execution or filing of any paper or any
further act on the part of any of the parties hereto, anything herein to the
contrary notwithstanding.

      Section 9.11 Appointment of Co-Trustee or Separate Trustee.

      (a) Notwithstanding any other provisions hereof, at any time, for the
purpose of meeting any legal requirements of any jurisdiction in which any part
of the Trust or property constituting the same may at the time be located, the
Depositor and the Trustee acting jointly shall have the power and shall execute
and deliver all instruments to appoint one or more Persons approved by the
Trustee and the Depositor to act as co-trustee or co-trustees, jointly with the
Trustee, or separate trustee or separate trustees, of all or any part of the
Trust, and to vest in such Person or Persons, in such capacity, such title to
the Trust, or any part thereof, and, subject to the other provisions of this
Section 9.11, such powers, duties, obligations, rights and trusts as the
Depositor and the Trustee may consider necessary or desirable.

      (b) If the Depositor shall not have joined in such appointment within 15
days after the receipt by it of a written request so to do, the Trustee shall
have the power to make such appointment without the Depositor.

                                     -123-
<PAGE>

      (c) No co-Master Servicer or separate trustee hereunder shall be required
to meet the terms of eligibility as a successor trustee under Section 9.06
hereunder and no notice to Certificateholders of the appointment of
co-trustee(s) or separate trustee(s) shall be required under Section 9.08
hereof.

      (d) In the case of any appointment of a co-trustee or separate trustee
pursuant to this Section 9.11, all rights, powers, duties and obligations
conferred or imposed upon the Trustee and required to be conferred on such
co-trustee shall be conferred or imposed upon and exercised or performed by the
Trustee and such separate trustee or co-trustee jointly, except to the extent
that under any law of any jurisdiction in which any particular act or acts are
to be performed (whether as Trustee hereunder or as successor to the Master
Servicer hereunder), the Trustee shall be incompetent or unqualified to perform
such act or acts, in which event such rights, powers, duties and obligations
(including the holding of title to the Trust or any portion thereof in any such
jurisdiction) shall be exercised and performed by such separate trustee or
co-trustee at the direction of the Trustee.

      (e) Any notice, request or other writing given to the Trustee shall be
deemed to have been given to each of the then separate trustees and co-trustees,
as effectively as if given to each of them. Every instrument appointing any
separate trustee or co-trustee shall refer to this Agreement and the conditions
of this Article IX. Each separate trustee and co-trustee, upon its acceptance of
the trusts conferred, shall be vested with the estates or property specified in
its instrument of appointment, either jointly with the Trustee or separately, as
may be provided therein, subject to all the provisions of this Agreement,
specifically including every provision of this Agreement relating to the conduct
of, affecting the liability of, or affording protection to, the Trustee. Every
such instrument shall be filed with the Trustee.

      (f) To the extent not prohibited by law, any separate trustee or
co-trustee may, at any time, request the Trustee, its agent or attorney-in-fact,
with full power and authority, to do any lawful act under or with respect to
this Agreement on its behalf and in its name. If any separate trustee or
co-trustee shall die, become incapable of acting, resign or be removed, all of
its estates, properties rights, remedies and trusts shall vest in and be
exercised by the Trustee, to the extent permitted by law, without the
appointment of a new or successor Trustee.

      (g) No Trustee under this Agreement shall be personally liable by reason
of any act or omission of another Trustee under this Agreement. The Depositor
and the Trustee acting jointly may at any time accept the resignation of or
remove any separate trustee or co-trustee.

                                     -124-
<PAGE>

      Section 9.12 Federal Information Returns and Reports to
Certificateholders; REMIC Administration.

      (a) REMIC elections as set forth in the Preliminary Statement shall be
made on Forms 1066 or other appropriate federal tax or information return for
the taxable year ending on the last day of the calendar year in which the
Certificates are issued. The regular interests and residual interest in each
REMIC shall be as designated in the Preliminary Statement.

      (b) The Closing Date is hereby designated as the "Startup Day" of each
REMIC within the meaning of section 860G(a)(9) of the Code. The latest possible
maturity date for purposes of Treasury Regulation 1.860G-1(a)(4) will be the
Latest Possible Maturity Date.

      (c) The Securities Administrator shall, for federal income tax purposes,
maintain books and records with respect to each REMIC on a calendar year and on
an accrual basis.

      (d) The Securities Administrator shall represent the Trust Fund in any
administrative or judicial proceeding relating to an examination or audit by any
governmental taxing authority with respect thereto. The Securities Administrator
shall pay any and all tax-related expenses (not including taxes) of each REMIC,
including but not limited to any professional fees or expenses related to audits
or any administrative or judicial proceedings with respect to such REMIC that
involve the Internal Revenue Service or state tax authorities, but only to the
extent that (i) such expenses are ordinary or routine expenses, including
expenses of a routine audit but not expenses of litigation (except as described
in (ii)); or (ii) such expenses or liabilities (including taxes and penalties)
are attributable to the negligence or willful misconduct of the Securities
Administrator in fulfilling its duties hereunder (including its duties as tax
return preparer). The Securities Administrator shall be entitled to
reimbursement of expenses to the extent provided in clause (i) above from the
Distribution Account, provided, however, the Securities Administrator shall not
be entitled to reimbursement for expenses incurred in connection with the
preparation of tax returns and other reports as required by this Section.

      (e) The Securities Administrator shall prepare and file, and the Trustee
shall sign, all of each REMIC's and the Trust Fund's federal and appropriate
state tax and information returns as such REMIC's direct representative. The
expenses of preparing and filing such returns shall be borne by the Securities
Administrator.

      (f) The Securities Administrator or its designee shall perform on behalf
of each REMIC all reporting and other tax compliance duties that are the
responsibility of such REMIC under the Code, the REMIC Provisions, or other
compliance guidance issued by the Internal Revenue Service or any state or local
taxing authority. Among its other duties, if required by the Code, the REMIC
Provisions, or other such guidance, the Securities Administrator shall provide,
upon receipt of additional reasonable compensation, to the Treasury or other
governmental authority such information as is necessary for the application of
any tax relating to the transfer of a Residual Certificate to any disqualified
person or organization pursuant to Treasury Regulation 1.860E-2(a)(5) and any
person designated in Section 860E(e)(3) of the Code.

      (g) The Securities Administrator and the Holders of Certificates shall
take any action or cause any REMIC to take any action necessary to create or
maintain the status of any REMIC

                                     -125-
<PAGE>

as a REMIC under the REMIC Provisions and shall assist each other as necessary
to create or maintain such status. Neither the Securities Administrator nor the
Holder of any Residual Certificate shall knowingly take any action, cause any
REMIC to take any action or fail to take (or fail to cause to be taken) any
action that, under the REMIC Provisions, if taken or not taken, as the case may
be, could (i) endanger the status of any REMIC as a REMIC or (ii) result in the
imposition of a tax upon any REMIC (including but not limited to the tax on
prohibited transactions as defined in Code Section 860F(a)(2) and the tax on
prohibited contributions set forth on Section 860G(d) of the Code) (either such
event, an "Adverse REMIC Event") unless the Securities Administrator has
received a REMIC Opinion (at the expense of the party seeking to take such
action) to the effect that the contemplated action will not endanger such status
or result in the imposition of such a tax. In addition, prior to taking any
action with respect to any REMIC or the assets therein, or causing any REMIC to
take any action, which is not expressly permitted under the terms of this
Agreement, any Holder of a Residual Certificate will consult with the Securities
Administrator, in writing, with respect to whether such action could cause an
Adverse REMIC Event to occur with respect to any REMIC, and no such Person shall
take any such action or cause any REMIC to take any such action as to which the
Securities Administrator has advised it in writing that an Adverse REMIC Event
could occur; provided, however, that if no Adverse REMIC Event would occur but
such action could result in the imposition of additional taxes on the Residual
Certificateholders, no such Person shall take any such action, or cause any
REMIC to take any such action without the written consent of the Residual
Certificateholders.

      (h) Each Holder of a Residual Certificate shall pay when due any and all
taxes imposed on the related REMIC by federal or state governmental authorities.
To the extent that such taxes are not paid by a Residual Certificateholder, the
Securities Administrator shall pay any remaining REMIC taxes out of current or
future amounts otherwise distributable to the Holder of the Residual Certificate
in any such REMIC or, if no such amounts are available, out of other amounts
held in the Distribution Account, and shall reduce amounts otherwise payable to
holders of regular interests in any such REMIC, as the case may be.

      (i) The Securities Administrator shall prepare and file with the Internal
Revenue Service ("IRS"), on behalf of each of REMIC 1, REMIC 2 and the Upper
Tier REMIC, an application for an employer identification number on IRS Form
SS-4 or by any other acceptable method. The Securities Administrator shall also
file a Form 8811 as required. The Securities Administrator, upon receipt from
the IRS of the Notice of Taxpayer Identification Number Assigned, shall upon
request promptly forward a copy of such notice to the Depositor. The Securities
Administrator shall furnish any other information that is required by the Code
and regulations thereunder to be made available to Certificateholders. The
Depositor shall cause each Servicer to provide the Securities Administrator with
such information as is necessary for the Securities Administrator to prepare
such reports.

      (j) No additional contributions of assets shall be made to any REMIC,
except as expressly provided in this Agreement.

      (k) The Securities Administrator shall not enter into any arrangement by
which any REMIC will receive a fee or other compensation for services.

                                     -126-
<PAGE>

      (l) The Class A-R Holder shall act as "tax matters person" with respect to
each REMIC and irrevocably appoints the Securities Administrator to act as its
agent in such roles.

      (m) The Securities Administrator shall prepare or cause to be prepared on
behalf of the Trust Fund, based upon information calculated in accordance with
this Agreement pursuant to instructions given by the Depositor, the Trustee
shall sign, and the Securities Administrator shall file federal tax returns, all
in accordance with Section 9.12 hereof. The Securities Administrator shall
prepare and file, and the Trustee shall sign, such state income tax returns and
such other returns as may be required by applicable law relating to the Trust
Fund, and, if required by state law, and shall file any other documents to the
extent required by applicable state tax law (to the extent such documents are in
the Securities Administrator's possession). The Securities Administrator shall
forward copies to the Depositor of all such returns and Form 1099 supplemental
tax information and such other information within the control of the Securities
Administrator as the Depositor may reasonably request in writing, and shall
distribute to each Certificateholder such forms and furnish such information
within the control of the Securities Administrator as are required by the Code
and the REMIC Provisions to be furnished to them, and will prepare and
distribute to Certificateholders Form 1099 (supplemental tax information) (or
otherwise furnish information within the control of the Securities
Administrator) to the extent required by applicable law.

      (n) None of the Securities Administrator, the Trustee or the Depositor, as
assignees under this Agreement, shall provide any consent pursuant to this
Agreement or knowingly take any action under this Agreement that would conflict
with or violate the provisions of this Section 9.12.

      (o)

            (i) The parties intend that the portion of the Trust Fund consisting
      of the right to receive the payments distributable to the Class P
      Certificates shall be treated as a "grantor trust" under the Code, for the
      benefit of the holders of the Class P Certificates, and the provisions
      hereof shall be interpreted consistently with this intention. In
      furtherance of such intention, the Securities Administrator shall (i)
      furnish or cause to be furnished to the holders of the Class P
      Certificates information regarding their allocable share of the income
      with respect to such grantor trust and (ii) file or cause to be filed with
      the Internal Revenue Service, and the Trustee shall sign, Form 1041
      (together with any necessary attachments) and such other forms as may be
      applicable.

            (ii) It is intended that the rights of the Class I-A Certificates
      (the "Basis Risk Shortfall Protected Certificates") to receive payments in
      respect of Basis Risk Shortfall Amounts from amounts otherwise
      distributable to the Class X-A Certificates shall be treated as rights in
      respect of interest rate cap contracts written by the Class X-A
      Certificateholders in favor of the holders of the Basis Risk Shortfall
      Protected Certificates and shall be accounted for as property separate and
      apart from the Upper Tier REMIC Regular Interest represented by the Basis
      Risk Shortfall Protected Certificates. This provision is intended to
      comply with the requirements of Treasury Regulations Section 1.860G-2(i)
      for the treatment of property rights coupled with regular interests to be
      separately respected and shall be interpreted consistently with such
      regulation. The

                                     -127-
<PAGE>

      Holders of the Basis Risk Shortfall Protected Certificates agree, by their
      acceptance of such Certificates, that they will take tax reporting
      positions that allocate no more than a nominal value to the right to
      receive payments in respect of Basis Risk Shortfall Amounts. For
      information reporting purposes, it will be assumed that such rights have
      no value. The Holders of the Class X-A Certificates agree, by their
      acceptance of such Certificates, to take tax reporting positions
      consistent with allocations by the Holders of the Basis Risk Shortfall
      Protected Certificates of no more than a nominal value to the right to
      receive payments in respect of Basis Risk Shortfall Amounts. For
      information reporting purposes, it will be assumed that such rights have
      no value. Each payment made to the Basis Risk Shortfall Protected
      Certificates in respect of Basis Risk Shortfall Amounts from amounts
      otherwise distributable to the Class X-A Certificates shall be treated for
      federal income tax purposes as having been distributed to the Class X-A
      Certificates and then paid by the holders of the Class X-A to the holders
      of the relevant Basis Risk Shortfall Protected Certificates. Each holder
      or beneficial owner of a Basis Risk Shortfall Protected Certificate, by
      virtue of its acquisition of such Certificate or a beneficial interest in
      such Certificate, agrees to adopt tax reporting positions consistent with
      the characterization of payments made to the Basis Risk Shortfall
      Protected Certificates in respect of Basis Risk Shortfall Amounts as
      payments in respect of interest rate cap agreements written by the holders
      of the Class X-A Certificates (in the case of such amounts payable from
      amounts otherwise distributable to the Class X-A Certificates). The
      parties hereto intend that the Upper Tier REMIC Regular Interest
      represented by the Class X-A Certificates, together with the related
      obligations to make payments to the Basis Risk Shortfall Protected
      Certificates out of amounts otherwise distributable to the Class X-A
      Certificates shall be treated as a grantor trust under the Code and the
      provisions hereof shall be interpreted consistently with this intention.
      In furtherance of such intention, the Securities Administrator shall (i)
      furnish to the holders of the Class X-A Certificates information regarding
      items of income, gain, loss and deduction of such grantor trusts and (ii)
      file or cause to be filed with the Internal Revenue Service Form 1041
      (together with any necessary attachments) or such other form as may be
      applicable and (iii) comply with such information reporting obligations
      with respect to payments from such grantor trusts as may be applicable
      under the Code or other applicable tax laws.

      (p) Notwithstanding any other provision of this Agreement, the Trustee and
the Securities Administrator shall comply with all federal withholding
requirements respecting payments to Certificateholders of interest or original
issue discount on the Mortgage Loans, that the Trustee or the Securities
Administrator reasonably believes are applicable under the Code. The consent of
Certificateholders shall not be required for such withholding. In the event the
Trustee or the Securities Administrator withholds any amount from interest or
original issue discount payments or advances thereof to any Certificateholder
pursuant to federal withholding requirements, the Trustee or the Securities
Administrator shall, together with its monthly report to such
Certificateholders, indicate such amount withheld.

      (q) The Trustee and the Securities Administrator agree to indemnify the
Trust Fund and the Depositor for any taxes and costs including, without
limitation, any reasonable attorneys fees imposed on or incurred by the Trust
Fund, the Depositor or the Trustee, as a result of a breach of the Trustee's
covenants and the Securities Administrator's covenants, respectively, set

                                     -128-
<PAGE>

forth in this Section 9.12; provided, however, such liability and obligation to
indemnify in this paragraph shall not be joint and several and neither the
Trustee nor the Securities Administrator shall be liable or be obligated to
indemnify the Trust Fund for the failure by the other to perform any duty under
this Agreement or the breach by the other of any covenant in this Agreement.

      (r) The Securities Administrator covenants and agrees that it shall act as
agent (and the Securities Administrator is hereby appointed to act as agent) of
the Tax Matters Person on behalf of each of the REMICs provided for herein and
that in such capacity it shall: (a) to the extent that they are under its
control conduct the affairs of each of the REMICs provided for herein at all
times that any Certificates are outstanding so as to maintain the status of each
of the REMICs provided for herein as a REMIC under the REMIC Provisions; (b) not
knowingly or intentionally take any action or omit to take any action that would
cause the termination of the REMIC status of any of the REMICs provided for
herein or result in the imposition of tax upon any such REMIC; (c) not knowingly
or intentionally take any action or omit to take any action that would cause the
termination of the grantor trust status under Subpart E, Part I of Subchapter J
of the Code of any of the grantor trusts provided for herein or result in the
imposition of tax upon any such grantor trust; and (d) as and when necessary and
appropriate, represent each of the REMICs provided for herein in any
administrative or judicial proceedings relating to an examination or audit by
any governmental taxing authority, request an administrative adjustment as to
any taxable year of any of the REMICs provided for herein, enter into settlement
agreements with any governmental taxing agency, extend any statute of
limitations relating to any tax item of any of the REMICs provided for herein,
and otherwise act on behalf of each of the REMICs provided for herein in
relation to any tax matter involving any of such REMICs or any controversy
involving the Trust Fund.

      (s) Each of the Depositor, the Master Servicer, the Securities
Administrator and the Trustee agrees not to take or omit to take knowingly or
intentionally, any action or omit to take any action that would cause the
termination of the REMIC status of any of the REMICs provided for herein or
result in the imposition of a tax upon any of the REMICs provided for herein.

                                     -129-
<PAGE>
                                    ARTICLE X
                                   TERMINATION

      Section 10.01 Termination upon Liquidation or Repurchase of all Mortgage
Loans.

      (a) Subject to Section 10.03, the obligations and responsibilities of the
Depositor, the Master Servicer, the Securities Administrator and the Trustee
created hereby with respect to the Trust Fund shall terminate upon the earlier
of (a) an Optional Termination and (b) the later of (i) the maturity or other
liquidation of the last Mortgage Loan remaining in the Trust Fund (or any
Monthly Advance with respect thereto) and the disposition of all REO Property
and (ii) the distribution to Certificateholders of all amounts required to be
distributed to them pursuant to this Agreement, as applicable. In no event shall
the trusts created hereby continue beyond the earlier of (i) the expiration of
21 years from the death of the last survivor of the descendants of Joseph P.
Kennedy, the late Ambassador of the United States to the Court of St. James's,
living on the date hereof and (ii) the Latest Possible Maturity Date.

      (b) On or before the Determination Date following the Initial Optional
Termination Date, the Securities Administrator shall attempt to terminate the
Issuing Entity by conducting an auction of all of the Mortgage Loans and REO
Properties via a solicitation of bids from at least three (3) bidders, each of
which shall be a nationally recognized participant in mortgage finance (the
"Auction"). The Depositor and the Securities Administrator agree to work in good
faith to develop bid procedures in advance of the Initial Optional Termination
Date to govern the operation of the Auction. The Securities Administrator shall
be entitled to retain an investment banking firm and/or other agents in
connection with the Auction, the cost of which shall be included in the Optional
Termination Price (unless an Optional Termination does not occur in which case
such costs shall be an expense of the Issuing Entity). The Securities
Administrator shall accept the highest bid received at the Auction; provided
that the amount of such bid equals or exceeds the Optional Termination Price.
The Securities Administrator shall determine the Optional Termination Price
based upon information provided by (i) the Master Servicer with respect to the
amounts described in clauses (A) and (B) of the definition of "Optional
Termination Price" (other than Securities Administrator's expenses) and (ii) the
Depositor with respect to the information described in clause (C) of the
definition of "Optional Termination Price." The Securities Administrator may
conclusively rely upon the information provided to it in accordance with the
immediately preceding sentence and shall not have any liability for the failure
of any party to provide such information.

      If an Optional Termination does not occur as a result of the Auction's
failure to achieve the Optional Termination Price, the Master Servicer may, on
any Distribution Date following such Auction, at its option, terminate the
Issuing Entity by purchasing all of the Mortgage Loans and REO Properties at a
price equal to the Optional Termination Price. In connection with such
termination, the Optional Termination Price shall be delivered to the Securities
Administrator no later than the Business Day immediately preceding the related
Distribution Date. Notwithstanding anything to the contrary herein, the Optional
Termination Amount paid to the Securities Administrator by the winning bidder at
the Auction or by the Master Servicer shall be deposited by the Securities
Administrator directly into the Distribution Account immediately upon receipt.
Upon any termination as a result of an Auction, the Securities Administrator
shall, out of the Optional Termination Amount deposited into the Distribution
Account, (x) pay the

                                     -130-
<PAGE>

Securities Administrator its costs and expenses necessary to conduct the Auction
and any other unreimbursed amounts owing to it and (y) pay to the Master
Servicer or Servicer, the aggregate amount of any unreimbursed out-of-pocket
costs and expenses owed to the Master Servicer or Servicer and any unpaid or
unreimbursed Servicing Fees, Monthly Advances and Servicing Advances.

(c) Notwithstanding anything to the contrary in clause (b) above, in the event
that the Securities Administrator and the Trustee receive the written opinion of
a nationally recognized participant in mortgage finance acceptable to the Seller
that the Mortgage Loans and REO Properties to be included in the Auction will
not be saleable at a price sufficient to achieve the Optional Termination Price,
the Securities Administrator need not conduct the Auction. In such event, the
Master Servicer shall have the option to purchase the Mortgage Loans and REO
Properties at the Optional Termination Price as of the Initial Optional
Termination Date.

      Section 10.02 Final Distribution on the Certificates.

      If on any Determination Date, (i) the Securities Administrator determines
that there are no Outstanding Mortgage Loans and no other funds or assets in the
Trust Fund other than the funds in the Master Servicer Collection Account, the
Securities Administrator shall send a final distribution notice promptly to each
Certificateholder or (ii) the Securities Administrator determines that a Class
of Certificates shall be retired after a final distribution on such Class, the
Securities Administrator shall notify the Certificateholders within seven (7)
Business Days after such Determination Date that the final distribution in
retirement of such Class of Certificates is scheduled to be made on the
immediately following Distribution Date. Any final distribution made pursuant to
the immediately preceding sentence will be made only upon presentation and
surrender of the Certificates at the office of the Securities Administrator.

      Notice of any termination of the Issuing Entity, specifying the
Distribution Date on which Certificateholders may surrender their Certificates
for payment of the final distribution and cancellation, shall be given promptly
by the Securities Administrator by letter to Certificateholders mailed no later
than the last calendar day of the month immediately preceding the month of such
final distribution (or with respect to an Auction, mailed no later than one
Business Day following completion of such Auction). Any such notice shall
specify (a) the Distribution Date upon which final distribution on the
Certificates will be made upon presentation and surrender of Certificates at the
office therein designated, (b) the location of the office or agency at which
such presentation and surrender must be made, and (c) that the Record Date
otherwise applicable to such Distribution Date is not applicable, distributions
being made only upon presentation and surrender of the Certificates at the
office therein specified. The Securities Administrator will give such notice to
each Rating Agency at the time such notice is given to Certificateholders.

      In the event such notice is given, the Master Servicer shall cause all
funds in the Master Servicer Collection Account to be deposited in the
Distribution Account on the Business Day prior to the applicable Distribution
Date in an amount equal to the final distribution in respect of the
Certificates. Upon receipt of written notice of such final deposit with respect
to the Issuing Entity and the receipt by the Trustee, or its Custodian, of a
Request for Release therefor, the

                                     -131-
<PAGE>

Trustee, or its Custodian, shall promptly release to the Securities
Administrator or the Master Servicer, as applicable, the Mortgage Files for the
Mortgage Loans.

      Upon presentation and surrender of the Certificates, the Securities
Administrator shall cause to be distributed to Certificateholders of each Class
the amounts allocable to such Certificates held in the Distribution Account in
the order and priority set forth in Section 6.01 hereof on the final
Distribution Date and in proportion to their respective Percentage Interests.

      In the event that any affected Certificateholders shall not surrender
Certificates for cancellation within six months after the date specified in the
above-mentioned written notice, the Securities Administrator shall give a second
written notice to the remaining Certificateholders to surrender their
Certificates for cancellation and receive the final distribution with respect
thereto. If within six months after the second notice all the applicable
Certificates shall not have been surrendered for cancellation, the Securities
Administrator may take appropriate steps, or may appoint an agent to take
appropriate steps, to contact the remaining Certificateholders concerning
surrender of their Certificates, and the cost thereof shall be paid out of the
funds and other assets that remain a part of the Issuing Entity. If within one
year after the second notice all Certificates shall not have been surrendered
for cancellation, the Class A-R Certificateholders shall be entitled to all
unclaimed funds and other assets of the Issuing Entity that remain subject
hereto. Upon payment to the Class A-R Certificateholders of such funds and
assets, the Securities Administrator shall have no further duties or obligations
with respect thereto.

      Section 10.03 Additional Termination Requirements.

      (a) In the event the Securities Administrator or the Master Servicer
exercises its purchase option as provided in Section 10.01, the Trust Fund shall
be terminated in accordance with the following additional requirements, unless
the Securities Administrator shall have been furnished with an Opinion of
Counsel to the effect that the failure of the Issuing Entity to comply with the
requirements of this Section will not (i) result in the imposition of taxes on
"prohibited transactions" of the Issuing Entity as defined in Section 860F of
the Code or (ii) cause any REMIC constituting part of the Issuing Entity to fail
to qualify as a REMIC at any time that any Certificates are outstanding:

            (i) Within 90 days prior to the final Distribution Date, the
      Securities Administrator shall adopt and sign a plan of complete
      liquidation of the Issuing Entity as provided to it by the terminating
      purchaser, meeting the requirements of a "qualified liquidation" under
      Section 860F of the Code and any regulations thereunder; and

            (ii) At or after the time of adoption of such a plan of complete
      liquidation and at or prior to the final Distribution Date, the Securities
      Administrator shall sell all of the assets of the Issuing Entity for cash
      pursuant to the terms of the plan of complete liquidation.

      (b) By their acceptance of Certificates, the Holders thereof hereby agree
to appoint the Securities Administrator as their attorney in fact to: (i) adopt
such a plan of complete liquidation (and the Certificateholders hereby appoint
the Securities Administrator as their attorney in fact to sign such plan) as
appropriate and (ii) to take such other action in connection

                                     -132-
<PAGE>

therewith as may be reasonably required to carry out such plan of complete
liquidation all in accordance with the terms hereof.

                                   ARTICLE XI
                            MISCELLANEOUS PROVISIONS

      Section 11.01 Intent of Parties. The parties intend that each REMIC shall
be treated as a REMIC for federal income tax purposes and that the provisions of
this Agreement should be construed in furtherance of this intent.

      Section 11.02 Amendment.

      (a) This Agreement may be amended from time to time by the Depositor, the
Master Servicer, the Securities Administrator and the Trustee, and without the
consent of any of the Certificateholders to:

            (i) to cure any ambiguity or correct any mistake,

            (ii) to correct, modify or supplement any provision herein which may
      be inconsistent with any other provision herein,

            (iii) to add any other provisions with respect to matters or
      questions arising under this Agreement, or

            (iv) to modify, alter, amend, add to or rescind any of the terms or
      provisions contained in this Agreement; provided, however, that, in the
      case of clauses (iii) and (iv), such amendment will not, as evidenced by
      an Opinion of Counsel addressed to the Securities Administrator to such
      effect, adversely affect in any material respect the interests of any
      Certificateholder; provided, further, however, that such amendment will be
      deemed to not adversely affect in any material respect the interest of any
      Holder if the Person requesting such amendment obtains a letter from each
      Rating Agency stating that such amendment will not result in a reduction
      or withdrawal of its rating of any Class of the Certificates, it being
      understood and agreed that any such letter in and of itself will not
      represent a determination as to the materiality of any such amendment and
      will represent a determination only as to the credit issues affecting any
      such rating.

      Notwithstanding the foregoing, without the consent of the
Certificateholders, the Depositor, the Master Servicer, the Securities
Administrator and the Trustee may at any time and from time to time amend this
Agreement to modify, eliminate or add to any of its provisions to such extent as
shall be necessary or appropriate to maintain the qualification of any of the
REMICs provided for herein as REMICs under the Code or to avoid or minimize the
risk of the imposition of any tax on the Issuing Entity or any of the REMICs
provided for herein pursuant to the Code that would be a claim against the
Issuing Entity at any time prior to the final redemption of the Certificates,
provided that the Trustee and the Securities Administrator shall have been
provided an Opinion of Counsel addressed to the Trustee and the Securities
Administrator, which opinion shall be an expense of the party requesting such
amendment but in

                                     -133-
<PAGE>

any case shall not be an expense of the Trustee and the Securities
Administrator, to the effect that such action is necessary or appropriate to
maintain such qualification or to avoid or minimize the risk of the imposition
of such a tax.

      (b) This Agreement may also be amended from time to time by the Master
Servicer, the Depositor, the Securities Administrator and the Trustee, and the
Assignment Agreements may also be amended from time to time by the Master
Servicer and the Trustee, with the consent of the Holders of Certificates
evidencing Percentage Interests aggregating not less than 51% of the Class
Certificate Balance of the Certificates or of the applicable Class or Classes,
if such amendment affects only such Class or Classes, for the purpose of adding
any provisions to or changing in any manner or eliminating any of the provisions
of this Agreement or of modifying in any manner the rights of the
Certificateholders; provided, however, that no such amendment shall (i) reduce
in any manner the amount of, or delay the timing of, payments received on
Mortgage Loans which are required to be distributed on any Regular Certificate
without the consent of the Holder of such Regular Certificate, or (ii) reduce
the aforesaid percentage of Certificates the Holders of which are required to
consent to any such amendment, without the consent of the Holders of all
Certificates then outstanding. Notwithstanding any contrary provision of this
Agreement, the Trustee shall not consent to any amendment to this Agreement
unless it shall have first received an Opinion of Counsel addressed to the
Trustee, which opinion shall be an expense of the party requesting such
amendment but in any case shall not be an expense of the Trustee, to the effect
that such amendment is permitted hereunder and will not cause the imposition of
any tax on the Issuing Entity, any of the REMICs provided for herein or the
Certificateholders or cause any of the REMICs provided for herein to fail to
qualify as a REMIC at any time that any Certificates are outstanding.

      (c) Promptly after the execution of any such amendment, the Securities
Administrator shall furnish a copy of such amendment or written notification of
the substance of such amendment to each Certificateholder, with a copy to the
Rating Agencies.

      (d) In the case of an amendment under Subsection 11.02(b) above, it shall
not be necessary for the Certificateholders to approve the particular form of
such an amendment. Rather, it shall be sufficient if the Certificateholders
approve the substance of the amendment. The manner of obtaining such consents
and of evidencing the authorization of the execution thereof by
Certificateholders shall be subject to such reasonable regulations as the
Trustee may prescribe.

      (e) Prior to the execution of any amendment to this Agreement, the Trustee
shall be entitled to receive and rely upon an Opinion of Counsel stating that
the execution of such amendment is authorized or permitted by this Agreement and
will not adversely affect the status of any REMIC created hereunder. The Trustee
and the Securities Administrator may, but shall not be obligated to, enter into
any such amendment which affects the Trustee's or the Securities Administrator's
own respective rights, duties or immunities under this Agreement.

      Section 11.03 Recordation of Agreement. To the extent permitted by
applicable law, this Agreement is subject to recordation in all appropriate
public offices for real property records in all the counties or other comparable
jurisdictions in which any or all of the Mortgaged Properties are situated, and
in any other appropriate public recording office or elsewhere. The

                                     -134-
<PAGE>

Depositor shall effect such recordation, at the expense of the Issuing Entity
upon the request in writing of a Certificateholder, but only if such direction
is accompanied by an Opinion of Counsel (provided at the expense of the
Certificateholder requesting recordation) to the effect that such recordation
would materially and beneficially affect the interests of the Certificateholders
or is required by law.

      Section 11.04 Limitation on Rights of Certificateholders.

      (a) The death or incapacity of any Certificateholder shall not terminate
this Agreement or the Issuing Entity, nor entitle such Certificateholder's legal
representatives or heirs to claim an accounting or to take any action or
proceeding in any court for a partition or winding up of the Issuing Entity, nor
otherwise affect the rights, obligations and liabilities of the parties hereto
or any of them.

      (b) Except as expressly provided in this Agreement, no Certificateholders
shall have any right to vote or in any manner otherwise control the operation
and management of the Issuing Entity, or the obligations of the parties hereto,
nor shall anything herein set forth, or contained in the terms of the
Certificates, be construed so as to establish the Certificateholders from time
to time as partners or members of an association; nor shall any
Certificateholders be under any liability to any third Person by reason of any
action taken by the parties to this Agreement pursuant to any provision hereof.

      (c) No Certificateholder shall have any right by virtue of any provision
of this Agreement to institute any suit, action or proceeding in equity or at
law upon, under or with respect to this Agreement against the Depositor, the
Securities Administrator, the Master Servicer or any successor to any such
parties unless (i) such Certificateholder previously shall have given to the
Trustee a written notice of a continuing default, as herein provided, (ii) the
Holders of Certificates evidencing Percentage Interests aggregating not less
than 51% of the Trust Fund shall have made written request upon the Trustee to
institute such action, suit or proceeding in its own name as Trustee hereunder
and shall have offered to the Trustee such reasonable indemnity as it may
require against the costs and expenses and liabilities to be incurred therein or
thereby, and (iii) the Trustee, for 60 days after its receipt of such notice,
request and offer of indemnity, shall have neglected or refused to institute any
such action, suit or proceeding.

      (d) No one or more Certificateholders shall have any right by virtue of
any provision of this Agreement to affect the rights of any other
Certificateholders or to obtain or seek to obtain priority or preference over
any other such Certificateholder, or to enforce any right under this Agreement,
except in the manner herein provided and for the equal, ratable and common
benefit of all Certificateholders. For the protection and enforcement of the
provisions of this Section 11.04, each and every Certificateholder and the
Trustee shall be entitled to such relief as can be given either at law or in
equity.

      Section 11.05 Acts of Certificateholders.

      (a) Any request, demand, authorization, direction, notice, consent, waiver
or other action provided by this Agreement to be given or taken by
Certificateholders may be embodied in and

                                     -135-
<PAGE>

evidenced by one or more instruments of substantially similar tenor signed by
such Certificateholders in person or by an agent duly appointed in writing.
Except as herein otherwise expressly provided, such action shall become
effective when such instrument or instruments are delivered to the Trustee and,
where it is expressly required, to the Depositor. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Agreement and conclusive in favor of the Trustee and the
Depositor, if made in the manner provided in this Section 11.05.

      (b) The fact and date of the execution by any Person of any such
instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof. Where such
execution is by a signer acting in a capacity other than his or her individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of his or her authority. The fact and date of the execution of any such
instrument or writing, or the authority of the individual executing the same,
may also be proved in any other manner which the Trustee deems sufficient.

      (c) The ownership of Certificates (notwithstanding any notation of
ownership or other writing on such Certificates, except an endorsement in
accordance with Section 5.02 made on a Regular Certificate presented in
accordance with Section 5.04) shall be proved by the Certificate Register, and
neither the Trustee, the Securities Administrator, the Depositor, the Master
Servicer nor any successor to any such parties shall be affected by any notice
to the contrary.

      (d) Any request, demand, authorization, direction, notice, consent, waiver
or other action of the holder of any Regular Certificate shall bind every future
holder of the same Regular Certificate and the holder of every Regular
Certificate issued upon the registration of transfer or exchange thereof, if
applicable, or in lieu thereof with respect to anything done, omitted or
suffered to be done by the Trustee, the Securities Administrator, the Depositor,
the Master Servicer or any successor to any such party in reliance thereon,
whether or not notation of such action is made upon such Certificates.

      (e) In determining whether the Holders of the requisite percentage of
Certificates evidencing Percentage Interests have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, Certificates
owned by the Trustee, the Securities Administrator, the Depositor, the Master
Servicer or any Affiliate thereof shall be disregarded, except as otherwise
provided in Section 11.02(b) and except that, in determining whether the
Securities Administrator or the Trustee shall be protected in relying upon any
such request, demand, authorization, direction, notice, consent or waiver, only
Certificates which a Responsible Officer of the Trustee knows to be so owned
shall be so disregarded. Certificates which have been pledged in good faith to
the Trustee, the Securities Administrator, the Depositor, the Master Servicer or
any Affiliate thereof may be regarded as outstanding if the pledgor establishes
to the satisfaction of the Securities Administrator the pledgor's right to act
with respect to such Certificates and that the pledgor is not an Affiliate of
the Trustee, the Securities Administrator, the Depositor, or the Master
Servicer, as the case may be.

                                     -136-
<PAGE>

      Section 11.06 Governing Law. THIS AGREEMENT AND THE CERTIFICATES SHALL BE
CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK WITHOUT REFERENCE
TO ITS CONFLICT OF LAWS RULES AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE
PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS.

      Section 11.07 Notices. All demands and notices hereunder shall be in
writing and shall be deemed given when delivered at (including delivery by
facsimile) or mailed by registered mail, return receipt requested, postage
prepaid, or by recognized overnight courier, to (i) in the case of the
Depositor, 4 World Financial Center, New York, New York 10281, Attention: Vice
President-Servicing, telecopier number: (212) 449-1000, or to such other address
as may hereafter be furnished to the other parties hereto in writing; (ii) in
the case of the Trustee, at its Corporate Trust Office, or such other address as
may hereafter be furnished to the other parties hereto in writing; (iii) in the
case of the Master Servicer or Securities Administrator, Wells Fargo Bank, N.A.,
P.O. Box 98, Columbia, Maryland 21046, Attention MLMI Series 2006-A4, or, in the
case of overnight deliveries, 9062 Old Annapolis Road, Columbia, Maryland
21045-1951, Attention: MLMI Series 2006-A4, facsimile no.: (410) 715-2380, or
such other address as may hereafter be furnished to the other parties hereto in
writing; (iv) in the case of the Custodian, Wells Fargo Bank, N.A., 1015 10th
Avenue Southeast, MS 0031, Minneapolis, Minnesota 55414, Attention: MLMI Series
2006-A4; or such other address as may hereafter be furnished to the other
parties hereto in writing; or (v) in the case of the Rating Agencies, Moody's
Investors Service, Inc., 99 Church Street, 4th Floor, New York, New York 10007
and Standard & Poor's, a division of The McGraw-Hill Companies, Inc., 55 Water
Street, New York, New York 10041. Any notice delivered to the Depositor, the
Trustee, the Securities Administrator or the Master Servicer under this
Agreement shall be effective only upon receipt. Any notice required or permitted
to be mailed to a Certificateholder, unless otherwise provided herein, shall be
given by first-class mail, postage prepaid, at the address of such
Certificateholder as shown in the Certificate Register. Any notice so mailed
within the time prescribed in this Agreement shall be conclusively presumed to
have been duly given when mailed, whether or not the Certificateholder receives
such notice.

      Section 11.08 Severability of Provisions. If any one or more of the
covenants, agreements, provisions or terms of this Agreement shall be for any
reason whatsoever held invalid, then such covenants, agreements, provisions or
terms shall be deemed severed from the remaining covenants, agreements,
provisions or terms of this Agreement and shall in no way affect the validity or
enforceability of the other provisions of this Agreement or of the Certificates
or the rights of the holders thereof.

      Section 11.09 Successors and Assigns. The provisions of this Agreement
shall be binding upon and inure to the benefit of the respective successors and
assigns of the parties hereto.

      Section 11.10 Article and Section Headings. The article and section
headings herein are for convenience of reference only, and shall not limit or
otherwise affect the meaning hereof.

                                     -137-
<PAGE>

      Section 11.11 Counterparts. This Agreement may be executed in two or more
counterparts each of which when so executed and delivered shall be an original
but all of which together shall constitute one and the same instrument.

      Section 11.12 Notice to Rating Agencies. The article and section headings
herein are for convenience of reference only, and shall not limited or otherwise
affect the meaning hereof. The Trustee shall promptly provide notice to each
Rating Agency with respect to each of the following of which it has actual
knowledge:

      1. Any material change or amendment to this Agreement or the Servicing
Agreements;

      2. The occurrence of any Event of Default that has not been cured;

      3. The resignation or termination of the Trustee, the Master Servicer or
the Securities Administrator;

      4. The repurchase or substitution of Mortgage Loans;

      5. The final payment to Certificateholders; and

      6. Any change in the location of the Master Servicer Collection Account or
the Distribution Account.

                                  ARTICLE XII
                              REMIC ADMINISTRATION

      Section 12.01 [Reserved].

      Section 12.02 Prohibited Transactions and Activities. Neither the
Depositor nor the Securities Administrator shall sell, dispose of, or substitute
for any of the Mortgage Loans, except in a disposition pursuant to (i) the
foreclosure of a Mortgage Loan, (ii) the bankruptcy of the Trust Fund, (iii) the
termination of each REMIC pursuant to Article X of this Agreement, (iv) a
substitution pursuant to Article II of this Agreement or (v) a repurchase of
Mortgage Loans pursuant to Article II of this Agreement, nor acquire any assets
for any REMIC, nor sell or dispose of any investments in the Distribution
Account for gain, nor accept any contributions to any REMIC after the Closing
Date, unless it has received an Opinion of Counsel (at the expense of the party
causing such sale, disposition, or substitution) that such disposition,
acquisition, substitution, or acceptance will not (a) affect adversely the
status of any such REMIC as a REMIC or of the interests therein other than the
Residual Certificate as the regular interests therein, (b) affect the
distribution of interest or principal on the Certificates, (c) result in the
encumbrance of the assets transferred or assigned to the Trust Fund (except
pursuant to the provisions of this Agreement) or (d) cause any such REMIC to be
subject to any tax including a tax on prohibited transactions or prohibited
contributions pursuant to the REMIC Provisions.

                                     -138-
<PAGE>

      Section 12.03 Indemnification with Respect to Prohibited Transactions or
Loss of REMIC Status. In the event that a REMIC fails to qualify as a REMIC,
loses its status as a REMIC, or incurs federal, state or local taxes as a result
of a prohibited transaction or prohibited contribution under the REMIC
Provisions due to the negligent performance by the Securities Administrator of
its duties and obligations set forth herein, the Securities Administrator shall
indemnify the Certificateholders of the related Residual Certificate against any
and all losses, claims, damages, liabilities or expenses ("Losses") resulting
from such negligence; provided, however, that the Securities Administrator shall
not be liable for any such Losses attributable to the action or inaction of the
Depositor or the Holder of the Residual Certificate, nor for any such Losses
resulting from misinformation provided by any of the foregoing parties on which
the Securities Administrator has relied. Notwithstanding the foregoing, however,
in no event shall the Trustee or the Securities Administrator have any liability
(1) for any action or omission that is taken in accordance with and in
compliance with the express terms of, or which is expressly permitted by the
terms of, this Agreement or the Mortgage Loan Purchase Agreement, (2) for any
Losses other than arising out of malfeasance, willful misconduct or negligent
performance by the Securities Administrator with respect to its duties and
obligations set forth herein, and (3) for any special or consequential damages
to Certificateholders of the related Residual Certificate (in addition to
payment of principal and interest on the Certificates).

      Section 12.04 REO Property.

      (a) Notwithstanding any other provision of this Agreement, the Securities
Administrator shall not, except to the extent provided in this Agreement for
which the Securities Administrator is obligated to perform, knowingly permit any
Servicer to rent, lease, otherwise earn income or take any other action on
behalf of any REMIC with respect to any REO Property which might cause such REO
Property to fail to qualify as "foreclosure property" within the meaning of
section 860G(a)(8) of the Code or result in the receipt by any REMIC of any
"income from non-permitted assets" within the meaning of section 860F(a)(2) of
the Code or any "net income from foreclosure property" which is subject to tax
under the REMIC Provisions unless the Servicer has provided to the Securities
Administrator an Opinion of Counsel concluding that, under the REMIC Provisions,
such action would not adversely affect the status of any REMIC as a REMIC and
any income generated for any REMIC by the REO Property would not result in the
imposition of a tax upon such REMIC.

      (b) The Depositor shall cause each Servicer (to the extent provided in the
applicable Servicing Agreement) to make reasonable efforts to sell any REO
Property for its fair market value. In any event, however, the Depositor shall,
or shall cause the Servicer (to the extent provided in this Agreement) to,
dispose of any REO Property within three years of its acquisition by the Issuing
Entity unless the Depositor or such Servicer (on behalf of the Issuing Entity)
has received a grant of extension from the Internal Revenue Service to the
effect that, under the REMIC Provisions and any relevant proposed legislation
and under applicable state law, the REMIC may hold REO Property for a longer
period without adversely affecting the REMIC status of such REMIC or causing the
imposition of a Federal or state tax upon such REMIC. If such an extension has
been received, then the Depositor, acting on behalf of the Trustee hereunder,
shall, or shall cause the Servicer to, continue to attempt to sell the REO
Property for its fair market value for such period longer than three years as
such extension permits (the "Extended Period"). If such an extension has not
been received and the Depositor or the

                                     -139-
<PAGE>

Servicer, acting on behalf of the Issuing Entity hereunder, is unable to sell
the REO Property within 33 months after its acquisition by the Issuing Entity or
if such an extension, has been received and the Depositor or the Servicer is
unable to sell the REO Property within the period ending three months before the
close of the Extended Period, the Depositor shall cause the Servicer, before the
end of the three year period or the Extended Period, as applicable, to (i)
purchase such REO Property at a price equal to the REO Property's fair market
value or (ii) auction the REO Property to the highest bidder (which may be the
Servicer) in an auction reasonably designed to produce a fair price prior to the
expiration of the three-year period or the Extended Period, as the case may be.

                                     -140-
<PAGE>

      IN WITNESS WHEREOF, the Depositor, the Trustee, the Master Servicer and
the Securities Administrator have caused their names to be signed hereto by
their respective officers thereunto duly authorized as of the day and year first
above written.

                                 MERRILL LYNCH MORTGAGE
                                 INVESTORS, INC.,
                                 as Depositor

                                 By:
                                      ------------------------------------
                                 Name:
                                 Title:

                                 HSBC BANK USA, NATIONAL
                                 ASSOCIATION,
                                 as Trustee

                                 By:
                                      ------------------------------------
                                 Name:
                                 Title:

                                 WELLS FARGO BANK, N.A.,
                                 as Master Servicer

                                 By:
                                      ------------------------------------
                                 Name:  Michael Pinzon
                                 Title: Assistant Vice President

                                 WELLS FARGO BANK, N.A.,
                                 as Securities Administrator

                                 By:
                                      ------------------------------------
                                 Name:  Michael Pinzon
                                 Title: Assistant Vice President

<PAGE>

                                   EXHIBIT A-1

                      FORM OF CLASS [_-A_][M-_] CERTIFICATE
SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS A "REGULAR
INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT", AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED.

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NEITHER THIS CERTIFICATE, THE
REMIC REGULAR INTEREST REPRESENTED HEREBY NOR THE UNDERLYING MORTGAGE LOANS ARE
GUARANTEED OR INSURED BY THE DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER, THE
SECURITIES ADMINISTRATOR OR BY ANY OF THEIR AFFILIATES OR BY ANY GOVERNMENTAL
AGENCY OR INSTRUMENTALITY.

FOLLOWING THE INITIAL ISSUANCE OF THE CERTIFICATES, THE PRINCIPAL BALANCE OF
THIS CERTIFICATE MAY BE DIFFERENT FROM THE ORIGINAL DENOMINATION SHOWN BELOW.
ANYONE ACQUIRING THIS CERTIFICATE MAY ASCERTAIN ITS CURRENT PRINCIPAL BALANCE BY
INQUIRY OF THE SECURITIES ADMINISTRATOR.

[THIS CERTIFICATE IS SUBORDINATE TO THE SENIOR CERTIFICATES AND THE RESIDUAL
CERTIFICATES TO THE EXTENT DESCRIBED IN THE AGREEMENT REFERRED TO HEREIN.]

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE &
CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO
ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
INTEREST HEREIN.

IF ANY BOOK-ENTRY CERTIFICATE (OR ANY INTEREST THEREIN) IS ACQUIRED OR HELD IN
VIOLATION OF THE PROVISIONS OF SECTION 5.02(B) OF THE POOLING AND SERVICING
AGREEMENT, THEN THE LAST PRECEDING TRANSFEREE THAT IS IN COMPLIANCE WITH SUCH
PROVISIONS SHALL BE RESTORED, TO THE EXTENT PERMITTED BY LAW, TO ALL RIGHTS AND
OBLIGATIONS AS CERTIFICATE OWNER THEREOF RETROACTIVE TO THE DATE OF SUCH
TRANSFER OF SUCH CERTIFICATE. NEITHER THE TRUSTEE NOR THE SECURITIES
ADMINISTRATOR SHALL BE UNDER ANY LIABILITY TO

                                     A-1-1
<PAGE>

ANY PERSON FOR MAKING ANY PAYMENTS DUE ON SUCH CERTIFICATE TO SUCH PRECEDING
TRANSFEREE.

ANY PURPORTED CERTIFICATE OWNER WHOSE ACQUISITION OR HOLDING OF ANY BOOK-ENTRY
CERTIFICATE (OR INTEREST THEREIN) WAS EFFECTED IN VIOLATION OF THE RESTRICTIONS
IN SECTION 5.02(B) OF THE AGREEMENT SHALL INDEMNIFY AND HOLD HARMLESS THE
DEPOSITOR, THE TRUSTEE, THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER AND
THE TRUST FUND FROM AND AGAINST ANY AND ALL LIABILITIES, CLAIMS, COSTS OR
EXPENSES INCURRED BY SUCH PARTIES AS A RESULT OF SUCH ACQUISITION OR HOLDING.

                                     A-1-2
<PAGE>

MLMI Series 2006-A4, Class [_-A_][M-_]   Aggregate Certificate Principal Balance
                                         of the Class [_-A_][M-_] Certificates
                                         as of the Issue Date:  $__________

Pass-Through Rate: Variable(1)           Initial Certificate Principal Balance
                                         of this Class [_-A_][M-_] Certificate
                                         as of the Issue Date $__________

Date of Agreement and Cut-off Date:      Master Servicer and Securities
July 1, 2006                             Administrator: Wells Fargo Bank, N.A.

First Distribution Date: August 25,      Trustee: HSBC Bank USA, National
2006                                     Association

No. __                                   Issue Date: July 28, 2006

                                         CUSIP: ___________

      DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
      CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
      OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
      THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                        MORTGAGE PASS-THROUGH CERTIFICATE
                               MLMI SERIES 2006-A4

      evidencing a beneficial ownership interest in a Trust Fund (the "Trust
Fund") consisting primarily of four pools of conventional, one- to four-family,
adjustable-rate, fully amortizing mortgage loans secured by first liens on
residential property (the "Mortgage Loans") formed and sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.
      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN
      MERRILL LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE
      SECURITIES ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE
      AFFILIATES. NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
      GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

----------
(1) As described in the Pooling and Servicing Agreement referenced herein.

                                     A-1-3
<PAGE>

      This certifies that CEDE & CO. is the registered owner of a Percentage
Interest obtained by dividing the denomination of this Certificate by the
aggregate Certificate Principal Balance of the Class [_-A_][M-_] Certificates as
of the Issue Date in that certain beneficial ownership interest evidenced by all
the Class [_-A_][M-_] Certificates in the Trust Fund created pursuant to a
Pooling and Servicing Agreement, dated as specified above (the "Agreement"),
among Merrill Lynch Mortgage Investors, Inc., as depositor (hereinafter called
the "Depositor," which term includes any successor entity under the Agreement),
Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Master
Servicer") and securities administrator (in such capacity, the "Securities
Administrator") and HSBC Bank USA, National Association, as trustee (the
"Trustee"), a summary of certain of the pertinent provisions of which is set
forth hereafter. To the extent not defined herein, the capitalized terms used
herein have the meanings assigned in the Agreement. This Certificate is issued
under and is subject to the terms, provisions and conditions of the Agreement,
to which Agreement the Holder of this Certificate by virtue of the acceptance
hereof assents and by which such Holder is bound.

      Interest on this Certificate will accrue during the period specified in
the Agreement on the Certificate Principal Balance hereof at a per annum rate
equal to the variable Pass-Through Rate described in the Agreement.

      Pursuant to the terms of the Agreement, distributions will be made on the
25th day of each month or, if such 25th day is not a Business Day, the Business
Day immediately following (each, a "Distribution Date"), commencing on the First
Distribution Date specified above, to the Person in whose name this Certificate
is registered on the Record Date, in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount required to be
distributed to the Holders of Class [_-A_][M-_] Certificates on such
Distribution Date pursuant to the Agreement.

      All distributions to the Holder of this Certificate under the Agreement
will be made or caused to be made by the Securities Administrator by wire
transfer in immediately available funds to the account of the Person entitled
thereto if such Person shall have so notified the Securities Administrator in
writing at least five Business Days prior to the Record Date immediately prior
to such Distribution Date and is the registered owner of Class [_-A_][M-_]
Certificates, or otherwise by check mailed by first class mail to the address of
the Person entitled thereto, as such name and address shall appear on the
Certificate Register. Notwithstanding the above, the final distribution on this
Certificate will be made after due notice by the Securities Administrator of the
pendency of such distribution and only upon the presentation and surrender of
this Certificate at the office or agency appointed by the Securities
Administrator for that purpose as provided in the Agreement.

      If any Book-Entry Certificate (or any interest therein) is acquired or
held in violation of the provisions of Section 5.02(b) of the Agreement, then
the last preceding Transferee that is in compliance with such provisions shall
be restored, to the extent permitted by law, to all rights and obligations as
Certificate Owner thereof retroactive to the date of such Transfer of such
Certificate. Neither the Trustee nor the Securities Administrator shall be under
any liability to any Person for making any payments due on such Certificate to
such preceding Transferee.

                                     A-1-4
<PAGE>

      Any purported Certificate Owner whose acquisition or holding of any
Book-Entry Certificate (or interest therein) was effected in violation of the
restrictions in Section 5.02(b) of the Agreement shall indemnify and hold
harmless the Depositor, the Trustee, the Securities Administrator, the Master
Servicer and the Trust Fund from and against any and all liabilities, claims,
costs or expenses incurred by such parties as a result of such acquisition or
holding.

      This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

      The Certificates are limited in right of payment to certain collections
and recoveries respecting the Mortgage Loans, all as more specifically set forth
herein and in the Agreement. As provided in the Agreement, withdrawals from the
Master Servicer Collection Account and the Distribution Account may be made from
time to time for purposes other than distributions to Holders of the
Certificates, such purposes including reimbursement of advances made, or certain
expenses incurred, with respect to the Mortgage Loans.

      The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee, with the consent of the Holders of Certificates
evidencing Percentage Interests aggregating not less than 51% of the Trust Fund
or of the applicable Class or Classes, if such amendment affects only such Class
or Classes, for the purpose of adding any provisions to or changing in any
manner or eliminating any of the provisions of this Agreement or of modifying in
any manner the rights of the Certificateholders. Any such consent by the Holder
of this Certificate shall be conclusive and binding on such Holder and upon all
future Holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the Certificates.

      As provided in the Agreement and subject to certain limitations set forth
therein, the transfer of this Certificate is registrable in the Certificate
Register upon surrender of this Certificate for registration of transfer at the
offices or agencies appointed by the Securities Administrator as provided in the
Agreement, duly endorsed by, or accompanied by an assignment in the form below
or other written instrument of transfer in form satisfactory to the Securities
Administrator and the Certificate Registrar duly executed by, the Holder hereof
or such Holder's attorney duly authorized in writing, and thereupon one or more
new Certificates of the same Class in authorized denominations evidencing the
same aggregate Percentage Interest will be issued to the designated transferee
or transferees.

      The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are

                                     A-1-5
<PAGE>

exchangeable for new Certificates of the same Class in authorized denominations
evidencing the same aggregate Percentage Interest, as requested by the Holder
surrendering the same.

      No service charge will be made for any such registration of transfer or
exchange of Certificates, but the Certificate Registrar may require payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection with any transfer or exchange of Certificates.

      The Depositor, the Securities Administrator, the Master Servicer, the
Trustee and the Certificate Registrar and any agent of the Depositor, the
Securities Administrator, the Master Servicer, the Trustee or the Certificate
Registrar may treat the Person in whose name this Certificate is registered as
the owner hereof for all purposes, and none of the Depositor, the Securities
Administrator, the Master Servicer, the Trustee, the Certificate Registrar nor
any such agent shall be affected by notice to the contrary.

      This certificate shall be governed by and construed in accordance with the
laws of the state of New York.

      The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement, which can occur on any
date after the first Distribution Date on which the aggregate Stated Principal
Balance of the Mortgage Loans is less than 5% of the aggregate Stated Principal
Balance of the Mortgage Loans as of the Cut-off Date.

      The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

      Unless the certificate of authentication hereon has been executed by the
Certificate Registrar, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

                                     A-1-6
<PAGE>

      IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                 WELLS FARGO BANK, N.A.,
                                       as Securities Administrator

                                 By:
                                      ------------------------------------
                                       AUTHORIZED SIGNATORY

                                 Dated: July 28, 2006

             SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                 WELLS FARGO BANK, N.A.,
                                       as Authenticating Agent

                                 By:
                                      ------------------------------------
                                       AUTHORIZED SIGNATORY

                                 Dated:  July 28, 2006

                                     A-1-7
<PAGE>

                                  ABBREVIATIONS

      The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>          <C>                               <C>                    <C>
TEN COM -    as tenants in common              UNIF GIFT MIN ACT -           CUSTODIAN
TEN ENT -    as tenants by the entireties                                 (Cust) (Minor)
                                                                      under Uniform Gifts to
                                                                            Minors Act

JT TEN -     as joint tenants with right of                              ________________
             survivorship and not as                                         (State)
             tenants in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT
  FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
                                      unto

________________________________________________________________________________
______________________________________________________________________________.
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

the Percentage Interest evidenced by the Mortgage Pass-Through Certificate and
hereby authorize(s) the registration of transfer of such interest to assignee on
the Certificate Register of the Trust Fund.

      I (we) further direct the Certificate Registrar to issue a new Certificate
of a like Percentage Interest and Class to the above named assignee and deliver
such Certificate to the following address:

________________________________________________________________________________
_____________________________________________________________________________ .

Dated:

                              ---------------------------------------------
                               Signature by or on behalf of assignor

                              ---------------------------------------------
                               Signature Guaranteed

                                     A-1-8
<PAGE>

                            DISTRIBUTION INSTRUCTIONS

     The assignee should include the following for purposes of distribution:

   Distributions shall be made, by wire transfer or otherwise, in immediately
                                available funds

to ___________________________________________________________________________,
for the account of ___________________________________________________________,
account number___________, or, if mailed by check, to ________________________,
Applicable statements should be mailed to ____________________________________,
______________________________________________________________________________.

This information is provided by ______________________________________________,
the assignee named above, or _________________________________________________,
as its agent.

                                     A-1-9
<PAGE>

                                   EXHIBIT A-2

               FORM OF CLASS [B-_] [Rule 144a] [Reg S] CERTIFICATE
SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS A "REGULAR
INTEREST" IN A "REAL ESTATE MORTGAGE INVESTMENT CONDUIT", AS THOSE TERMS ARE
DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL REVENUE CODE OF
1986, AS AMENDED.

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NEITHER THIS CERTIFICATE, THE
REMIC REGULAR INTEREST REPRESENTED HEREBY NOR THE UNDERLYING MORTGAGE LOANS ARE
GUARANTEED OR INSURED BY THE DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER, THE
SECURITIES ADMINISTRATOR OR BY ANY OF THEIR AFFILIATES OR BY ANY GOVERNMENTAL
AGENCY OR INSTRUMENTALITY.

FOLLOWING THE INITIAL ISSUANCE OF THE CERTIFICATES, THE PRINCIPAL BALANCE OF
THIS CERTIFICATE MAY BE DIFFERENT FROM THE ORIGINAL DENOMINATION SHOWN BELOW.
ANYONE ACQUIRING THIS CERTIFICATE MAY ASCERTAIN ITS CURRENT PRINCIPAL BALANCE BY
INQUIRY OF THE SECURITIES ADMINISTRATOR.

THIS CERTIFICATE IS SUBORDINATE TO THE SENIOR CERTIFICATES, THE CLASS M
CERTIFICATES AND THE RESIDUAL CERTIFICATES TO THE EXTENT DESCRIBED IN THE
AGREEMENT REFERRED TO HEREIN.

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY TO THE DEPOSITOR OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE
NAME OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT IS MADE TO CEDE &
CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO
ANY PERSON IS WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN
INTEREST HEREIN.

IF ANY BOOK-ENTRY CERTIFICATE (OR ANY INTEREST THEREIN) IS ACQUIRED OR HELD IN
VIOLATION OF THE PROVISIONS OF SECTION 5.02(B) OF THE POOLING AND SERVICING
AGREEMENT, THEN THE LAST PRECEDING TRANSFEREE THAT IS IN COMPLIANCE WITH SUCH
PROVISIONS SHALL BE RESTORED, TO THE EXTENT PERMITTED BY LAW, TO ALL RIGHTS AND
OBLIGATIONS AS CERTIFICATE OWNER THEREOF RETROACTIVE TO THE DATE OF SUCH
TRANSFER OF SUCH CERTIFICATE. NEITHER THE TRUSTEE NOR THE SECURITIES
ADMINISTRATOR SHALL BE UNDER ANY LIABILITY TO

<PAGE>

ANY PERSON FOR MAKING ANY PAYMENTS DUE ON SUCH CERTIFICATE TO SUCH PRECEDING
TRANSFEREE.

ANY PURPORTED CERTIFICATE OWNER WHOSE ACQUISITION OR HOLDING OF ANY BOOK-ENTRY
CERTIFICATE (OR INTEREST THEREIN) WAS EFFECTED IN VIOLATION OF THE RESTRICTIONS
IN SECTION 5.02(B) OF THE AGREEMENT SHALL INDEMNIFY AND HOLD HARMLESS THE
DEPOSITOR, THE TRUSTEE, THE SECURITIES ADMINISTRATOR, THE MASTER SERVICER AND
THE TRUST FUND FROM AND AGAINST ANY AND ALL LIABILITIES, CLAIMS, COSTS OR
EXPENSES INCURRED BY SUCH PARTIES AS A RESULT OF SUCH ACQUISITION OR HOLDING.

NO TRANSFER OF THIS CERTIFICATE SHALL BE REGISTERED UNLESS THE PROSPECTIVE
TRANSFEREE PROVIDES THE SECURITIES ADMINISTRATOR WITH (A) A REPRESENTATION THAT
SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN OR OTHER ARRANGEMENT SUBJECT TO
TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), A PLAN SUBJECT TO SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986,
AS AMENDED (THE "CODE") OR A PLAN SUBJECT TO ANY PROVISION UNDER ANY FEDERAL,
STATE, LOCAL, NON-U.S. OR OTHER LAWS OR REGULATIONS THAT ARE SUBSTANTIVELY
SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE ("SIMILAR LAW")
(COLLECTIVELY, A "PLAN"), AND IS NOT DIRECTLY OR INDIRECTLY ACQUIRING THIS
CERTIFICATE FOR, ON BEHALF OF, OR WITH ANY ASSETS OF ANY SUCH PLAN, (B) IF THIS
CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING, A
REPRESENTATION THAT SUCH TRANSFEREE IS AN INSURANCE COMPANY THAT IS ACQUIRING
THIS CERTIFICATE WITH ASSETS OF AN "INSURANCE COMPANY GENERAL ACCOUNT" AS
DEFINED IN SECTION V(E) OF PROHIBITED TRANSACTION CLASS EXEMPTION ("PTCE") 95-60
AND THE ACQUISITION AND HOLDING OF THIS CERTIFICATE ARE COVERED AND EXEMPT UNDER
SECTIONS I AND III OF PTCE 95-60 OR (C) SOLELY IN THE CASE OF A DEFINITIVE
CERTIFICATE, AN OPINION OF COUNSEL SATISFACTORY TO THE SECURITIES ADMINISTRATOR,
AND UPON WHICH THE SECURITIES ADMINISTRATOR SHALL BE ENTITLED TO RELY, TO THE
EFFECT THAT THE ACQUISITION AND HOLDING OF THIS CERTIFICATE BY THE PROSPECTIVE
TRANSFEREE WILL NOT CONSTITUTE OR RESULT IN A NONEXEMPT PROHIBITED TRANSACTION
UNDER ERISA OR THE CODE, OR A VIOLATION OF SIMILAR LAW, AND WILL NOT SUBJECT THE
TRUSTEE, THE SECURITIES ADMINISTRATOR, THE CERTIFICATE REGISTRAR, THE MASTER
SERVICER, ANY SERVICER OR THE DEPOSITOR TO ANY OBLIGATION IN ADDITION TO THOSE
UNDERTAKEN BY SUCH ENTITIES IN THE POOLING AND SERVICING AGREEMENT, WHICH
OPINION OF COUNSEL SHALL NOT BE AN EXPENSE OF THE TRUSTEE, THE SECURITIES
ADMINISTRATOR, THE CERTIFICATE REGISTRAR, THE MASTER SERVICER, ANY SERVICER OR
THE DEPOSITOR. IF THE CERTIFICATE IS NOT

<PAGE>

A DEFINITIVE CERTIFICATE, THE TRANSFEREE IS DEEMED TO HAVE MADE THE
REPRESENTATION IN (A) OR (B) ABOVE.

THIS CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED (THE "1933 ACT"), OR THE SECURITIES LAWS OF ANY STATE
AND MAY NOT BE RESOLD OR TRANSFERRED [WITHIN THE UNITED STATES (AS DEFINED IN
RULES 901 THROUGH 905 OF THE 1933 ACT ("REGULATION S")) OR TO, OR FOR THE
ACCOUNT OR BENEFIT OF, A U.S. PERSON (AS DEFINED IN REGULATION S),] UNLESS IT IS
REGISTERED PURSUANT TO SUCH ACT AND LAWS OR IS SOLD OR TRANSFERRED IN
TRANSACTIONS THAT ARE EXEMPT FROM REGISTRATION UNDER SUCH ACT AND UNDER
APPLICABLE STATE LAW AND IS TRANSFERRED IN ACCORDANCE WITH THE PROVISIONS OF
SECTION 5.02 OF THE AGREEMENT.

<PAGE>

MLMI Series 2006-A4, Class [B-_]     Aggregate Certificate Principal Balance of
[RULE 144A] [REGULATION S]           Class [B-_] Certificates as of  the Issue
                                     Date: $__________

Pass Through Rate: Variable(1)       Initial Class Certificate Principal Balance
                                     of this Class [B-_] Certificate as of the
                                     Issue Date: $__________

Date of Agreement and Cut-off Date:  Master Servicer and Securities
July 1, 2006                         Administrator:
                                     Wells Fargo Bank, N.A.

First Distribution Date: August 25,  Trustee: HSBC Bank USA, National
2006                                 Association

No. __                               Issue Date: July 28, 2006

                                     CUSIP: ___________

      DISTRIBUTIONS IN REDUCTION OF THE CERTIFICATE PRINCIPAL BALANCE OF THIS
      CERTIFICATE MAY BE MADE MONTHLY AS SET FORTH HEREIN. ACCORDINGLY, THE
      OUTSTANDING CERTIFICATE PRINCIPAL BALANCE HEREOF AT ANY TIME MAY BE LESS
      THAN THE AMOUNT SHOWN ABOVE AS THE DENOMINATION OF THIS CERTIFICATE.

                        MORTGAGE PASS-THROUGH CERTIFICATE
                               MLMI SERIES 2006-A4

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
consisting primarily of four pools of conventional, one- to four-family,
adjustable-rate, fully amortizing mortgage loans secured by first liens on
residential property (the "Mortgage Loans") formed and sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.
      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN
      MERRILL LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE
      SECURITIES ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE
      AFFILIATES. NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
      GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

----------
(1) As described in the Pooling and Servicing Agreement referenced herein.

<PAGE>

      This certifies that CEDE & CO. is the registered owner of a Percentage
Interest (obtained by dividing the denomination of this Certificate by the
aggregate Certificate Principal Balance of the Class [B-_] Certificates as of
the Issue Date) in that certain beneficial ownership interest evidenced by all
the Class [B-_] Certificates in the Trust Fund created pursuant to a Pooling and
Servicing Agreement, dated as specified above (the "Agreement"), among Merrill
Lynch Mortgage Investors, Inc., as depositor (hereinafter called the
"Depositor," which term includes any successor entity under the Agreement),
Wells Fargo Bank, N.A., as master servicer (in such capacity, the "Master
Servicer") and securities administrator (in such capacity, the "Securities
Administrator") and HSBC Bank USA, National Association, as trustee (the
"Trustee"), a summary of certain of the pertinent provisions of which is set
forth hereafter. To the extent not defined herein, the capitalized terms used
herein have the meanings assigned in the Agreement. This Certificate is issued
under and is subject to the terms, provisions and conditions of the Agreement,
to which Agreement the Holder of this Certificate by virtue of the acceptance
hereof assents and by which such Holder is bound.

      Interest on this Certificate will accrue during the period specified in
the Agreement on the Certificate Principal Balance hereof at a per annum rate
equal to the variable Pass-Through Rate described in the Agreement.

      Pursuant to the terms of the Agreement, distributions will be made on the
25th day of each month or, if such 25th day is not a Business Day, the Business
Day immediately following (each, a "Distribution Date"), commencing on the First
Distribution Date specified above, to the Person in whose name this Certificate
is registered on the Record Date, in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount required to be
distributed to the Holders of Class [B-_] Certificates on such Distribution Date
pursuant to the Agreement.

      All distributions to the Holder of this Certificate under the Agreement
will be made or caused to be made by the Securities

      Administrator by wire transfer in immediately available funds to the
account of the Person entitled thereto if such Person shall have so notified the
Securities Administrator in writing at least five Business Days prior to the
Record Date immediately prior to such Distribution Date and is the registered
owner of Class [B-_] Certificates, or otherwise by check mailed by first class
mail to the address of the Person entitled thereto, as such name and address
shall appear on the Certificate Register. Notwithstanding the above, the final
distribution on this Certificate will be made after due notice by the Securities
Administrator of the pendency of such distribution and only upon the
presentation and surrender of this Certificate at the office or agency appointed
by the Securities Administrator for that purpose as provided in the Agreement.

      If any Book-Entry Certificate (or any interest therein) is acquired or
held in violation of the provisions of Section 5.02(b) of the Agreement, then
the last preceding Transferee that is in compliance with such provisions shall
be restored, to the extent permitted by law, to all rights and obligations as
Certificate Owner thereof retroactive to the date of such Transfer of such
Certificate. Neither the Trustee nor the Securities Administrator shall be under
any liability to any Person for making any payments due on such Certificate to
such preceding Transferee.

<PAGE>

      Any purported Certificate Owner whose acquisition or holding of any
Book~Entry Certificate (or interest therein) was effected in violation of the
restrictions in Section 5.02(b) of the Agreement shall indemnify and hold
harmless the Depositor, the Trustee, the Securities Administrator, the Master
Servicer and the Trust Fund from and against any and all liabilities, claims,
costs or expenses incurred by such parties as a result of such acquisition or
holding.

      This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof equal to the
denomination specified on the face hereof divided by the aggregate Certificate
Principal Balance of the Class of Certificates specified on the face hereof.

      The Certificates are limited in right of payment to certain collections
and recoveries respecting the Mortgage Loans, all as more specifically set forth
herein and in the Agreement. As provided in the Agreement, withdrawals from the
Master Servicer Collection Account and the Distribution Account may be made from
time to time for purposes other than distributions to Holders of the
Certificates, such purposes including reimbursement of advances made, or certain
expenses incurred, with respect to the Mortgage Loans.

      The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee, with the consent of the Holders of Certificates
evidencing Percentage Interests aggregating not less than 51% of the Trust Fund
or of the applicable Class or Classes, if such amendment affects only such Class
or Classes, for the purpose of adding any provisions to or changing in any
manner or eliminating any of the provisions of this Agreement or of modifying in
any manner the rights of the Certificateholders. Any such consent by the Holder
of this Certificate shall be conclusive and binding on such Holder and upon all
future Holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the Certificates.

      As provided in the Agreement and subject to certain limitations set forth
therein, the transfer of this Certificate is registrable in the Certificate
Register upon surrender of this Certificate for registration of transfer at the
offices or agencies appointed by the Securities Administrator as provided in the
Agreement, duly endorsed by, or accompanied by an assignment in the form below
or other written instrument of transfer in form satisfactory to the Securities
Administrator and the Certificate Registrar duly executed by, the Holder hereof
or such Holder's attorney duly authorized in writing, and thereupon one or more
new Certificates of the same Class in authorized denominations evidencing the
same aggregate Percentage Interest will be issued to the designated transferee
or transferees.

      The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As

<PAGE>

provided in the Agreement and subject to certain limitations set forth therein,
Certificates are exchangeable for new Certificates of the same Class in
authorized denominations evidencing the same aggregate Percentage Interest, as
requested by the Holder surrendering the same.

      No transfer of this Certificate shall be made unless the transfer is made
pursuant to an effective registration statement under the Securities Act of
1933, as amended (the "1933 Act"), and any applicable state securities laws or
is exempt from the registration requirements under the 1933 Act and such state
securities laws. .In the event that a transfer is to be made in reliance upon an
exemption from the 1933 Act and such laws, the Certificateholder desiring to
effect such transfer and such Certificateholder's prospective transferee shall
each certify to the Securities Administrator in writing the facts surrounding
the transfer in a Transferor Representation Letter as described in the Agreement
and (i) deliver to the Securities Administrator an Investor Representation
Letter or Rule 144A Letter as described in the Agreement or (ii) have delivered
to the Securities Administrator an Opinion of Counsel that such transfer may be
made pursuant to an exemption from the Securities Act, which Opinion of Counsel
shall not be an expense of the Depositor or the Securities Administrator. Any
Certificateholder desiring to effect a transfer of this Certificate shall
indemnify the Securities Administrator and the Depositor against any liability
that may result if the transfer is not so exempt or is not made in accordance
with such federal and state laws.

      No service charge will be made for any such registration of transfer or
exchange of Certificates, but the Certificate Registrar may require payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection with any transfer or exchange of Certificates.

      The Depositor, the Securities Administrator, the Master Servicer, the
Trustee and the Certificate Registrar and any agent of the Depositor, the
Securities Administrator, the Master Servicer, the Trustee or the Certificate
Registrar may treat the Person in whose name this Certificate is registered as
the owner hereof for all purposes, and none of the Depositor, the Securities
Administrator, the Master Servicer, the Trustee, the Certificate Registrar nor
any such agent shall be affected by notice to the contrary.

      This certificate shall be governed by and construed in accordance with the
laws of the state of New York.

      The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement, which can occur on any
date after the first Distribution Date on which the aggregate Stated Principal
Balance of the Mortgage Loans is less than 5% of the aggregate Stated Principal
Balance of the Mortgage Loans as of the Cut-off Date.

<PAGE>

      The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

      Unless the certificate of authentication hereon has been executed by the
Certificate Registrar, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

<PAGE>

      IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                 WELLS FARGO BANK, N.A.,
                                       as Securities Administrator

                                 By:
                                    --------------------------------------
                                       AUTHORIZED SIGNATORY

                                 Dated: July 28, 2006

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                 WELLS FARGO BANK, N.A.,
                                       as Authenticating Agent

                                 By:
                                    --------------------------------------
                                       AUTHORIZED SIGNATORY

                                 Dated:  July 28, 2006

<PAGE>

                                  ABBREVIATIONS

      The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>          <C>                              <C>                   <C>
TEN COM -    as tenants in common             UNIF GIFT MIN ACT -         CUSTODIAN
TEN ENT -    as tenants by the entireties                               (Cust) (Minor)
                                                                    under Uniform Gifts to
                                                                          Minors Act

JT TEN -     as joint tenants with right of                             ______________
             survivorship and not as                                       (State)
             tenants in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT
  FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
                                      unto

________________________________________________________________________________
_____________________________________________________________________________ .
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

the Percentage Interest evidenced by the Mortgage Pass-Through Certificate and
hereby authorize(s) the registration of transfer of such interest to assignee on
the Certificate Register of the Trust Fund.

      I (we) further direct the Certificate Registrar to issue a new Certificate
of a like Percentage Interest and Class to the above named assignee and deliver
such Certificate to the following address:

________________________________________________________________________________

_____________________________________________________________________________ .
Dated:

                                   -------------------------------------------
                                    Signature by or on behalf of assignor

                                   -------------------------------------------
                                    Signature Guaranteed

<PAGE>

                            DISTRIBUTION INSTRUCTIONS

      The assignee should include the following for purposes of distribution:

      Distributions shall be made, by wire transfer or otherwise, in immediately
available funds

to ___________________________________________________________________________,
for the account of ___________________________________________________________,
account number___________, or, if mailed by check, to ________________________,
Applicable statements should be mailed to ____________________________________,

______________________________________________________________________________.

This information is provided by ______________________________________________,
the assignee named above, or _________________________________________________,
as its agent.

<PAGE>

                                   EXHIBIT A-3

                          FORM OF CLASS A-R CERTIFICATE
SOLELY FOR FEDERAL INCOME TAX PURPOSES, THIS CERTIFICATE REPRESENTS A "RESIDUAL
INTEREST" IN ONE OR MORE "REAL ESTATE MORTGAGE INVESTMENT CONDUITS", AS THOSE
TERMS ARE DEFINED, RESPECTIVELY, IN SECTIONS 860G AND 860D OF THE INTERNAL
REVENUE CODE OF 1986, AS AMENDED (THE "CODE").

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NEITHER THIS CERTIFICATE, THE
REMIC RESIDUAL INTERESTS REPRESENTED HEREBY NOR THE UNDERLYING MORTGAGE LOANS
ARE GUARANTEED OR INSURED BY THE DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER,
THE SECURITIES ADMINISTRATOR OR BY ANY OF THEIR AFFILIATES OR BY ANY
GOVERNMENTAL AGENCY OR INSTRUMENTALITY.

NO TRANSFER OF THIS CERTIFICATE SHALL BE REGISTERED UNLESS THE PROSPECTIVE
TRANSFEREE PROVIDES THE SECURITIES ADMINISTRATOR AND THE DEPOSITOR WITH A
REPRESENTATION THAT SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN SUBJECT TO
TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), A PLAN SUBJECT TO SECTION 4975 OF THE CODE OR A PLAN SUBJECT TO ANY
FEDERAL, STATE, LOCAL, NON-U.S. OR OTHER LAWS OR REGULATIONS THAT ARE
SUBSTANTIVELY SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE, AND IS
NOT DIRECTLY OR INDIRECTLY ACQUIRING THIS CERTIFICATE FOR, ON BEHALF OF, OR WITH
ANY ASSETS OF ANY SUCH PLAN. ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS
CERTIFICATE MAY BE MADE ONLY IN ACCORDANCE WITH THE PROVISIONS OF SECTION 5.02
OF THE AGREEMENT REFERRED TO HEREIN.

THIS CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED UNLESS IT IS REGISTERED PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS THAT ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER APPLICABLE STATE LAW AND IS TRANSFERRED IN ACCORDANCE WITH
THE PROVISIONS OF SECTION 5.02 OF THE AGREEMENT.

ANY RESALE, TRANSFER OR OTHER DISPOSITION OF THIS CERTIFICATE MAY BE MADE ONLY
IF THE PROPOSED TRANSFEREE PROVIDES AN AFFIDAVIT TO THE SECURITIES ADMINISTRATOR
THAT (A) SUCH TRANSFEREE IS NOT (1) THE UNITED STATES OR ANY POSSESSION THEREOF,
ANY STATE OR POLITICAL SUBDIVISION THEREOF, ANY FOREIGN GOVERNMENT, ANY
INTERNATIONAL ORGANIZATION, OR ANY AGENCY OR INSTRUMENTALITY

<PAGE>

OF ANY OF THE FOREGOING, (2) ANY ORGANIZATION (OTHER THAN A COOPERATIVE
DESCRIBED IN SECTION 521 OF THE CODE) THAT IS EXEMPT FROM THE TAX IMPOSED BY
CHAPTER 1 OF THE CODE UNLESS SUCH ORGANIZATION IS SUBJECT TO THE TAX IMPOSED BY
SECTION 511 OF THE CODE, (3) ANY ORGANIZATION DESCRIBED IN SECTION 1381(A)(2)(C)
OF THE CODE (ANY SUCH PERSON DESCRIBED IN THE FOREGOING CLAUSES (1), (2) OR (3)
SHALL HEREINAFTER BE REFERRED TO AS A "DISQUALIFIED ORGANIZATION") OR (4) AN
AGENT OF A DISQUALIFIED ORGANIZATION AND (B) NO PURPOSE OF SUCH TRANSFER IS TO
IMPEDE THE ASSESSMENT OR COLLECTION OF TAX. NOTWITHSTANDING THE REGISTRATION IN
THE CERTIFICATE REGISTER OF ANY TRANSFER, SALE OR OTHER DISPOSITION OF THIS
CERTIFICATE TO A DISQUALIFIED ORGANIZATION OR AN AGENT OF A DISQUALIFIED
ORGANIZATION, SUCH REGISTRATION SHALL BE DEEMED TO BE OF NO LEGAL FORCE OR
EFFECT WHATSOEVER AND SUCH PERSON SHALL NOT BE DEEMED TO BE A CERTIFICATEHOLDER
FOR ANY PURPOSE HEREUNDER, INCLUDING, BUT NOT LIMITED TO, THE RECEIPT OF
DISTRIBUTIONS ON THIS CERTIFICATE. EACH HOLDER OF THIS CERTIFICATE BY ACCEPTANCE
HEREOF SHALL BE DEEMED TO HAVE CONSENTED TO THE PROVISIONS OF THIS PARAGRAPH AND
THE PROVISIONS OF SECTION 5.02 OF THE AGREEMENT REFERRED TO HEREIN. ANY PERSON
THAT IS A DISQUALIFIED ORGANIZATION IS PROHIBITED FROM ACQUIRING BENEFICIAL
OWNERSHIP OF THIS CERTIFICATE.

<PAGE>

MLMI Series 2006-A4, Class A-R   Aggregate Certificate Principal Balance of the
                                 Class A-R Certificates as of the Issue Date:
                                 $100

Pass-Through Rate: Variable(1)   Master Servicer and Securities Administrator:
                                 Wells Fargo Bank, N.A.

Date of Agreement and Cut-off    Trustee: HSBC Bank USA, National Association
Date: July 1, 2006

First Distribution Date:         Issue Date: July 28, 2006
August 25, 2006

No. __                           CUSIP: ___________

                        MORTGAGE PASS-THROUGH CERTIFICATE
                               MLMI SERIES 2006-A4

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
consisting primarily of four pools of conventional, one- to four-family,
adjustable-rate, fully amortizing mortgage loans secured by first liens on
residential property (the "Mortgage Loans") formed and sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.
      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN
      MERRILL LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE
      SECURITIES ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE
      AFFILIATES. NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
      GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

      This certifies that _____________________________ is a registered owner of
a ___% Percentage Interest specified above in that certain beneficial ownership
interest evidenced by all the Class A-R Certificates in the Trust Fund created
pursuant to a Pooling and Servicing Agreement, dated as specified above (the
"Agreement"), among Merrill Lynch Mortgage Investors, Inc., as depositor
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement), Wells Fargo Bank, N.A., as master servicer (in such
capacity, the "Master Servicer") and securities administrator (in such capacity,
the "Securities Administrator") and HSBC Bank USA, National Association, as
trustee (the "Trustee"), a summary of certain of the pertinent provisions of
which is set forth hereafter. To the extent not defined herein, the capitalized
terms used herein have the meanings assigned in the Agreement.

----------
(1) As described in the Pooling and Servicing Agreement referenced herein.

<PAGE>

This Certificate is issued under and is subject to the terms, provisions and
conditions of the Agreement, to which Agreement the Holder of this Certificate
by virtue of the acceptance hereof assents and by which such Holder is bound.

      Pursuant to the terms of the Agreement, distributions will be made on the
25th day of each month or, if such 25th day is not a Business Day, the Business
Day immediately following (each, a "Distribution Date"), commencing on the First
Distribution Date specified above, to the Person in whose name this Certificate
is registered on the Record Date, in an amount equal to the product of the
Percentage Interest evidenced by this Certificate and the amount required to be
distributed to the Holders of Class A-R Certificates on such Distribution Date
pursuant to the Agreement.

      Interest on this Certificate will accrue during the period specified in
the Agreement on the Certificate Principal Balance hereof at a at a per annum
rate equal to the variable Pass-Through Rate described in the Agreement. In
addition, any distribution of the proceeds of any remaining assets of the Trust
will be made only upon presentment and surrender of this Certificate at the
Corporate Trust Office.

      This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof.

      The Certificates are limited in right of payment to certain collections
and recoveries respecting the related Mortgage Loans, all as more specifically
set forth herein and in the Agreement. As provided in the Agreement, withdrawals
from the Master Servicer Collection Account and the Distribution Account may be
made from time to time for purposes other than distributions to Holders of the
Certificates, such purposes including reimbursement of advances made, or certain
expenses incurred, with respect to the related Mortgage Loans.

      The Agreement permits, with certain exceptions and conditions provided
therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee, with the consent of the Holders of Certificates
evidencing Percentage Interests aggregating not less than 66 2/3% of the Trust
Fund or of the applicable Class or Classes, if such amendment affects only such
Class or Classes, for the purpose of adding any provisions to or changing in any
manner or eliminating any of the provisions of this Agreement or of modifying in
any manner the rights of the Certificateholders. Any such consent by the Holder
of this Certificate shall be conclusive and binding on such Holder and upon all
future Holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the Certificates.

      As provided in the Agreement and subject to certain limitations set forth
therein, the transfer of this Certificate is registrable in the Certificate
Register upon surrender of this Certificate for registration of transfer at the
offices or agencies appointed by the Securities Administrator as provided in the
Agreement, duly endorsed by, or accompanied by an

<PAGE>

assignment in the form below or other written instrument of transfer in form
satisfactory to the Securities Administrator and the Certificate Registrar duly
executed by, the Holder hereof or such Holder's attorney duly authorized in
writing, and thereupon one or more new Certificates of the same Class in
authorized denominations evidencing the same aggregate Percentage Interest will
be issued to the designated transferee or transferees.

      The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are exchangeable for new
Certificates of the same Class in authorized denominations evidencing the same
aggregate Percentage Interest, as requested by the Holder surrendering the same.

      No transfer of this Certificate shall be made unless the transfer is made
pursuant to an effective registration statement under the Securities Act of
1933, as amended (the "1933 Act"), and any applicable state securities laws or
is exempt from the registration requirements under the 1933 Act and such state
securities laws. .In the event that a transfer is to be made in reliance upon an
exemption from the 1933 Act and such laws, the Certificateholder desiring to
effect such transfer and such Certificateholder's prospective transferee shall
each certify to the Securities Administrator in writing the facts surrounding
the transfer in a Transferor Certificate as described in the Agreement and (i)
deliver to the Securities Administrator an Investment Letter or Rule 144A Letter
as described in the Agreement or (ii) have delivered to the Securities
Administrator an Opinion of Counsel that such transfer may be made pursuant to
an exemption from the Securities Act, which Opinion of Counsel shall not be an
expense of the Depositor or the Securities Administrator. Any Certificateholder
desiring to effect a transfer of this Certificate shall indemnify the Securities
Administrator and the Depositor against any liability that may result if the
transfer is not so exempt or is not made in accordance with such federal and
state laws.

      Each Person holding or acquiring any Ownership Interest in a Class A-R
Certificate shall be a Permitted Transferee, as described in the Agreement, and
shall promptly notify the Securities Administrator of any change or impending
change in its status as a Permitted Transferee.

      Prior to registration of any transfer, sale or other disposition of this
Certificate, the proposed transferee shall provide to the Securities
Administrator the affidavits described in Section 5.02(c) of the Agreement. Each
Person holding or acquiring any Ownership Interest in a Class A-R Certificate
shall agree to comply with the requirements of Section 5.02(c) of the Agreement
in connection with any transfer thereof. Any attempted or purported transfer of
any Ownership Interest in a Class A-R Certificate in violation of the provisions
of Section 5.02(c) of the Agreement shall be absolutely null and void and shall
vest no rights in the purported transferee. If any purported transferee shall
become a Holder of a Class A-R Certificate in violation of the provisions of
Section 5.02(c) of the Agreement, then the last preceding Permitted Transferee
shall be restored to all rights as Holder thereof retroactive to the date of
registration of Transfer of such Class A-R Certificate, as described more fully
in the Agreement.

      The Holder of this Certificate, by its acceptance hereof, shall be deemed
to have consented to the provisions of Section 5.02 of the Agreement and to any
amendment of the Agreement deemed necessary by counsel of the Depositor to
ensure that the transfer of this

<PAGE>

Certificate to any Person other than a Permitted Transferee or any other Person
will not cause the REMIC to cease to qualify as a REMIC or cause the imposition
of a tax upon the REMIC.

      No service charge will be made for any such registration of transfer or
exchange of Certificates, but the Certificate Registrar may require payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection with any transfer or exchange of Certificates.

      The Depositor, the Securities Administrator, the Master Servicer, the
Trustee and the Certificate Registrar and any agent of the Depositor, the
Securities Administrator, the Master Servicer, the Trustee or the Certificate
Registrar may treat the Person in whose name this Certificate is registered as
the owner hereof for all purposes, and none of the Depositor, the Securities
Administrator, the Master Servicer, the Trustee, the Certificate Registrar nor
any such agent shall be affected by notice to the contrary.

      This certificate shall be governed by and construed in accordance with the
laws of the state of New York.

      The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal Balance of each
Class of Certificates has been reduced to zero, (ii) the final payment (or any
advance with respect thereto) on or other liquidation of the last Mortgage Loan
remaining in the Trust Fund and (iii) the Optional Termination of the trust fund
according to the procedures described in the Agreement, which can occur on any
date after the first Distribution Date on which the aggregate Stated Principal
Balance of the Mortgage Loans is less than 5% of the aggregate Stated Principal
Balance of the Mortgage Loans as of the Cut-off Date.

      The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

      Unless the certificate of authentication hereon has been executed by the
Certificate Registrar, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

<PAGE>

IN WITNESS WHEREOF, the Securities Administrator has caused this Certificate to
be duly executed.

                                 WELLS FARGO BANK, N.A.,
                                       as Securities Administrator

                                 By:
                                    --------------------------------------
                                       AUTHORIZED SIGNATORY

                                 Dated: July 28, 2006

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                 WELLS FARGO BANK, N.A.,
                                       as Authenticating Agent

                                 By:
                                    --------------------------------------
                                       AUTHORIZED SIGNATORY

                                 Dated: July 28, 2006

<PAGE>

                                  ABBREVIATIONS

      The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>         <C>                               <C>                   <C>
TEN COM -   as tenants in common              UNIF GIFT MIN ACT -         CUSTODIAN
TEN ENT -   as tenants by the entireties                               (Cust) (Minor)
                                                                    under Uniform Gifts to
                                                                          Minors Act

JT TEN -    as joint tenants with right of                              ______________
            survivorship and not as                                         (State)
            tenants in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT

  FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and transfer(s)
                                      unto

_______________________________________________________________________________

_______________________________________________________________________________
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

the Percentage Interest evidenced by the Mortgage Pass-Through Certificate and
hereby authorize(s) the registration of transfer of such interest to assignee on
the Certificate Register of the Trust Fund.

      I (we) further direct the Certificate Registrar to issue a new Certificate
of a like Percentage Interest and Class to the above named assignee and deliver
such Certificate to the following address:

_______________________________________________________________________________

_______________________________________________________________________________.
Dated:

                                ---------------------------------------------
                                 Signature by or on behalf of assignor

                                ---------------------------------------------
                                 Signature Guaranteed

<PAGE>

                            DISTRIBUTION INSTRUCTIONS

      The assignee should include the following for purposes of distribution:

      Distributions shall be made, by wire transfer or otherwise, in immediately
available funds

to ___________________________________________________________________________,
for the account of ,___________________________________________________________
account number___________, or, if mailed by check, to ________________________,
Applicable statements should be mailed to ____________________________________,
______________________________________________________________________________.

This information is provided by ______________________________________________,
the assignee named above, or _________________________________________________,
as its agent.
<PAGE>
                                   EXHIBIT A-4

                           FORM OF CLASS P CERTIFICATE

THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN THE
DEPOSITOR, THE TRUSTEE, THE MASTER SERVICER OR THE SECURITIES ADMINISTRATOR
REFERRED TO BELOW OR ANY OF THEIR AFFILIATES. NEITHER THIS CERTIFICATE NOR THE
UNDERLYING MORTGAGE LOANS ARE GUARANTEED OR INSURED BY THE DEPOSITOR, THE
TRUSTEE, THE MASTER SERVICER, THE SECURITIES ADMINISTRATOR OR BY ANY OF THEIR
AFFILIATES OR BY ANY GOVERNMENTAL AGENCY OR INSTRUMENTALITY.

NO TRANSFER OF THIS CERTIFICATE SHALL BE REGISTERED UNLESS THE PROSPECTIVE
TRANSFEREE PROVIDES THE SECURITIES ADMINISTRATOR WITH (A) A REPRESENTATION THAT
SUCH TRANSFEREE IS NOT AN EMPLOYEE BENEFIT PLAN OR OTHER ARRANGEMENT SUBJECT TO
TITLE I OF THE EMPLOYEE RETIREMENT INCOME SECURITY ACT OF 1974, AS AMENDED
("ERISA"), A PLAN SUBJECT TO SECTION 4975 OF THE INTERNAL REVENUE CODE OF 1986,
AS AMENDED (THE "CODE") OR A PLAN SUBJECT TO ANY PROVISION UNDER ANY FEDERAL,
STATE, LOCAL, NON-U.S. OR OTHER LAWS OR REGULATIONS THAT ARE SUBSTANTIVELY
SIMILAR TO THE FOREGOING PROVISIONS OF ERISA OR THE CODE ("SIMILAR LAW")
(COLLECTIVELY, A "PLAN"), AND IS NOT DIRECTLY OR INDIRECTLY ACQUIRING THIS
CERTIFICATE FOR, ON BEHALF OF, OR WITH ANY ASSETS OF ANY SUCH PLAN, (B) IF THIS
CERTIFICATE HAS BEEN THE SUBJECT OF AN ERISA-QUALIFYING UNDERWRITING, A
REPRESENTATION THAT SUCH TRANSFEREE IS AN INSURANCE COMPANY THAT IS ACQUIRING
THIS CERTIFICATE WITH ASSETS OF AN "INSURANCE COMPANY GENERAL ACCOUNT" AS
DEFINED IN SECTION V(E) OF PROHIBITED TRANSACTION CLASS EXEMPTION ("PTCE") 95-60
AND THE ACQUISITION AND HOLDING OF THIS CERTIFICATE ARE COVERED AND EXEMPT UNDER
SECTIONS I AND III OF PTCE 95-60 OR (C) SOLELY IN THE CASE OF A DEFINITIVE
CERTIFICATE, AN OPINION OF COUNSEL SATISFACTORY TO THE SECURITIES ADMINISTRATOR,
AND UPON WHICH THE SECURITIES ADMINISTRATOR SHALL BE ENTITLED TO RELY, TO THE
EFFECT THAT THE ACQUISITION AND HOLDING OF THIS CERTIFICATE BY THE PROSPECTIVE
TRANSFEREE WILL NOT CONSTITUTE OR RESULT IN A NONEXEMPT PROHIBITED TRANSACTION
UNDER ERISA OR THE CODE, OR A VIOLATION OF SIMILAR LAW, AND WILL NOT SUBJECT THE
TRUSTEE, THE SECURITIES ADMINISTRATOR, THE CERTIFICATE REGISTRAR, THE MASTER
SERVICER, ANY SERVICER OR THE DEPOSITOR TO ANY OBLIGATION IN ADDITION TO THOSE
UNDERTAKEN BY SUCH ENTITIES IN THE POOLING AND SERVICING AGREEMENT, WHICH
OPINION OF COUNSEL SHALL NOT BE AN EXPENSE OF THE TRUSTEE, THE SECURITIES
ADMINISTRATOR, THE CERTIFICATE REGISTRAR, THE MASTER SERVICER, ANY SERVICER OR
THE DEPOSITOR. IF THE CERTIFICATE IS NOT A DEFINITIVE CERTIFICATE, THE
TRANSFEREE IS DEEMED TO HAVE MADE THE REPRESENTATION IN (A) OR (B) ABOVE.

<PAGE>

THIS CERTIFICATE HAS NOT BEEN AND WILL NOT BE REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED, OR THE SECURITIES LAWS OF ANY STATE AND MAY NOT BE
RESOLD OR TRANSFERRED UNLESS IT IS REGISTERED PURSUANT TO SUCH ACT AND LAWS OR
IS SOLD OR TRANSFERRED IN TRANSACTIONS THAT ARE EXEMPT FROM REGISTRATION UNDER
SUCH ACT AND UNDER APPLICABLE STATE LAW AND IS TRANSFERRED IN ACCORDANCE WITH
THE PROVISIONS OF SECTION 5.02 OF THE AGREEMENT.

<PAGE>

MLMI Series 2006-A4, Class P               Percentage Interest: 100%

Date of Agreement and Cut-off Date:        Master Servicer and Securities
July 1, 2006                               Administrator: Wells Fargo Bank, N.A.

First Distribution Date: August 25, 2006   Trustee: HSBC Bank USA, National
No. [ ]                                    Association Issue Date: July 28, 2006

                                           CUSIP: [ ]

                        MORTGAGE PASS-THROUGH CERTIFICATE

                               MLMI SERIES 2006-A4

evidencing a beneficial ownership interest in a Trust Fund (the "Trust Fund")
consisting primarily of five pools of conventional, one- to four-family,
adjustable-rate, fully amortizing mortgage loans secured by first liens on
residential property (the "Mortgage Loans") formed and sold by

                     MERRILL LYNCH MORTGAGE INVESTORS, INC.

      THIS CERTIFICATE DOES NOT REPRESENT AN OBLIGATION OF OR INTEREST IN
      MERRILL LYNCH MORTGAGE INVESTORS, INC., THE MASTER SERVICER, THE
      SECURITIES ADMINISTRATOR, THE TRUSTEE OR ANY OF THEIR RESPECTIVE
      AFFILIATES. NEITHER THIS CERTIFICATE NOR THE UNDERLYING MORTGAGE LOANS ARE
      GUARANTEED BY ANY AGENCY OR INSTRUMENTALITY OF THE UNITED STATES.

            This certifies that ___________________________ is the registered
owner of a 100% Percentage Interest in that certain beneficial ownership
interest evidenced by all the Class P Certificates in the Trust Fund created
pursuant to a Pooling and Servicing Agreement, dated as specified above (the
"Agreement"), among Merrill Lynch Mortgage Investors, Inc., as depositor
(hereinafter called the "Depositor," which term includes any successor entity
under the Agreement), Wells Fargo Bank, N.A., as master servicer (in such
capacity, the "Master Servicer") and securities administrator (in such capacity,
the "Securities Administrator") and HSBC Bank USA, National Association, as
trustee (the "Trustee"), a summary of certain of the pertinent provisions of
which is set forth hereafter. To the extent not defined herein, the capitalized
terms used herein have the meanings assigned in the Agreement. This Certificate
is issued under and is subject to the terms, provisions and conditions of the
Agreement, to which Agreement the Holder of this Certificate by virtue of the
acceptance hereof assents and by which such Holder is bound.

<PAGE>

            Pursuant to the terms of the Agreement, distributions will be made
on the 25th day of each month or, if such 25th day is not a Business Day, the
Business Day immediately following (a "Distribution Date"), commencing on the
First Distribution Date specified above, to the Person in whose name this
Certificate is registered on the Record Date, in an amount equal to the product
of the Percentage Interest evidenced by this Certificate and the amount required
to be distributed to the Holders of Class P Certificates on such Distribution
Date pursuant to the Agreement.

            All distributions to the Holder of this Certificate under the
Agreement will be made or caused to be made by the Securities Administrator by
wire transfer in immediately available funds to the account of the Person
entitled thereto if such Person shall have so notified the Securities
Administrator in writing at least five Business Days prior to the Record Date
immediately prior to such Distribution Date and is the registered owner of Class
P Certificates, or otherwise by check mailed by first class mail to the address
of the Person entitled thereto, as such name and address shall appear on the
Certificate Register. Notwithstanding the above, the final distribution on this
Certificate will be made after due notice by the Securities Administrator of the
pendency of such distribution and only upon the presentation and surrender of
this Certificate at the office or agency appointed by the Securities
Administrator for that purpose as provided in the Agreement.

            This Certificate is one of a duly authorized issue of Certificates
designated as Mortgage Pass-Through Certificates of the Series specified on the
face hereof (herein called the "Certificates") and representing a Percentage
Interest in the Class of Certificates specified on the face hereof.

            The Certificates are limited in right of payment to certain
collections and recoveries respecting the Mortgage Loans, all as more
specifically set forth herein and in the Agreement. As provided in the
Agreement, withdrawals from the Master Servicer Collection Account and the
Distribution Account may be made from time to time for purposes other than
distributions to Holders of the Certificates, such purposes including
reimbursement of advances made, or certain expenses incurred, with respect to
the Mortgage Loans.

            The Agreement permits, with certain exceptions and conditions
provided therein, the amendment thereof and the modification of the rights and
obligations of the Depositor, the Securities Administrator, the Master Servicer
and the Trustee and the rights of the Holders of the Certificates under the
Agreement at any time by the Depositor, the Securities Administrator, the Master
Servicer and the Trustee, with the consent of the Holders of Certificates
evidencing Percentage Interests aggregating not less than 51% of the Trust Fund
or of the applicable Class or Classes, if such amendment affects only such Class
or Classes, for the purpose of adding any provisions to or changing in any
manner or eliminating any of the provisions of this Agreement or of modifying in
any manner the rights of the Certificateholders. Any such consent by the Holder
of this Certificate shall be conclusive and binding on such Holder and upon all
future Holders of this Certificate and of any Certificate issued upon the
transfer hereof or in exchange herefor or in lieu hereof whether or not notation
of such consent is made upon this Certificate. The Agreement also permits the
amendment thereof, in certain limited circumstances, without the consent of the
Holders of any of the Certificates.

            As provided in the Agreement and subject to certain limitations set
forth therein, the transfer of this

<PAGE>

Certificate is registrable in the Certificate Register upon surrender of this
Certificate for registration of transfer at the offices or agencies appointed by
the Securities Administrator as provided in the Agreement, duly endorsed by, or
accompanied by an assignment in the form below or other written instrument of
transfer in form satisfactory to the Securities Administrator and the
Certificate Registrar duly executed by, the Holder hereof or such Holder's
attorney duly authorized in writing, and thereupon one or more new Certificates
of the same Class in authorized denominations evidencing the same aggregate
Percentage Interest will be issued to the designated transferee or transferees.

            The Certificates are issuable in fully registered form only without
coupons in Classes and denominations representing Percentage Interests specified
in the Agreement. As provided in the Agreement and subject to certain
limitations set forth therein, Certificates are exchangeable for new
Certificates of the same Class in authorized denominations evidencing the same
aggregate Percentage Interest, as requested by the Certificateholder
surrendering the same.

            No transfer of this Certificate shall be made unless the transfer is
made pursuant to an effective registration statement under the Securities Act of
1933, as amended (the "1933 Act"), and any applicable state securities laws or
is exempt from the registration requirements under the 1933 Act and such state
securities laws. .In the event that a transfer is to be made in reliance upon an
exemption from the 1933 Act and such laws, the Certificateholder desiring to
effect such transfer and such Certificateholder's prospective transferee shall
each certify to the Securities Administrator in writing the facts surrounding
the transfer in a Transferor Representation Letter as described in the Agreement
and (i) deliver to the Securities Administrator an Investor Representation
Letter or Rule 144A Letter as described in the Agreement or (ii) have delivered
to the Securities Administrator an Opinion of Counsel that such transfer may be
made pursuant to an exemption from the Securities Act, which Opinion of Counsel
shall not be an expense of the Depositor or the Securities Administrator. Any
Certificateholder desiring to effect a transfer of this Certificate shall
indemnify the Securities Administrator and the Depositor against any liability
that may result if the transfer is not so exempt or is not made in accordance
with such federal and state laws.

            No service charge will be made for any such registration of transfer
or exchange of Certificates, but the Certificate Registrar may require payment
of a sum sufficient to cover any tax or other governmental charge that may be
imposed in connection with any transfer or exchange of Certificates.

            The Depositor, the Securities Administrator, the Master Servicer,
the Trustee and the Certificate Registrar and any agent of the Depositor, the
Securities Administrator, the Master Servicer, the Trustee or the Certificate
Registrar may treat the Person in whose name this Certificate is registered as
the owner hereof for all purposes, and none of the Depositor, the Securities
Administrator, the Master Servicer, the Trustee, the Certificate Registrar nor
any such agent shall be affected by notice to the contrary.

            This certificate shall be governed by and construed in accordance
with the laws of the state of New York.

            The obligations created by the Agreement and the Trust Fund created
thereby shall terminate upon payment (or provision for payment) to the Holders
of the Certificates of all amounts held by the Securities Administrator and
required to be paid to them pursuant to the Agreement following the earlier of
(i) the Distribution Date on which the Certificate Principal

<PAGE>

Balance of each Class of Certificates has been reduced to zero, (ii) the final
payment (or any advance with respect thereto) on or other liquidation of the
last Mortgage Loan remaining in the Trust Fund and (iii) the Optional
Termination of the trust fund according to the procedures described in the
Agreement, which can occur on any date after the first Distribution Date on
which the aggregate Stated Principal Balance of the Mortgage Loans is less than
5% of the aggregate Stated Principal Balance of the Mortgage Loans as of the
Cut-off Date.

            The recitals contained herein shall be taken as statements of the
Depositor and the Securities Administrator assumes no responsibility for their
correctness.

            Unless the certificate of authentication hereon has been executed by
the Certificate Registrar, by manual signature, this Certificate shall not be
entitled to any benefit under the Agreement or be valid for any purpose.

<PAGE>

      IN WITNESS WHEREOF, the Securities Administrator has caused this
Certificate to be duly executed.

                                             WELLS FARGO BANK, N.A.,
                                                  as Securities Administrator

                                             By:________________________________
                                                    AUTHORIZED SIGNATORY

                                             Dated:  July 28, 2006

              SECURITIES ADMINISTRATOR'S CERTIFICATE AUTHENTICATION

This is one of the Certificates referred to in the within-mentioned Pooling and
Servicing Agreement.

                                             WELLS FARGO BANK, N.A.,
                                                  as Authenticating Agent

                                             By:________________________________
                                                       AUTHORIZED SIGNATORY

Dated:  July 28, 2006

<PAGE>

                                  ABBREVIATIONS

      The following abbreviations, when used in the inscription on the face of
this instrument, shall be construed as though they were written out in full
according to applicable laws or regulations:

<TABLE>
<S>         <C>                             <C>                   <C>
TEN COM -   as tenants in common            UNIF GIFT MIN ACT -     CUSTODIAN
                                                                    ---------
TEN ENT -   as tenants by the entireties                          (Cust) (Minor)
                                                                  under Uniform Gifts to
                                                                    Minors Act

JT TEN -    as joint tenants with right of                        ______________
            survivorship and not as                                  (State)
            tenants in common
</TABLE>

     Additional abbreviations may also be used though not in the above list.

                                   ASSIGNMENT
        FOR VALUE RECEIVED, the undersigned hereby sell(s), assign(s) and
                                transfer(s) unto

________________________________________________________________________________

________________________________________________________________________________
(Please print or typewrite name, address including postal zip code, and Taxpayer
Identification Number of assignee)

the Percentage Interest evidenced by the Mortgage Pass-Through Certificate and
hereby authorize(s) the registration of transfer of such interest to assignee on
the Certificate Register of the Trust Fund.

      I (we) further direct the Certificate Registrar to issue a new Certificate
of a like Percentage Interest and Class to the above named assignee and deliver
such Certificate to the following address:

________________________________________________________________________________

________________________________________________________________________________

Dated:

                                           _____________________________________
                                           Signature by or on behalf of assignor

                                           _____________________________________
                                           Signature Guaranteed

<PAGE>

                            DISTRIBUTION INSTRUCTIONS
         The assignee should include the following for purposes of distribution:

      Distributions shall be made, by wire transfer or otherwise, in immediately
available funds

to ___________________________________________________________________________,
for the account of ___________________________________________________________,
account number___________, or, if mailed by check, to ________________________,
Applicable statements should be mailed to ____________________________________,

This information is provided by ______________________________________________,
the assignee named above, or _________________________________________________,
as its agent._________________________________________________________________,

<PAGE>

                                    EXHIBIT B
                             MORTGAGE LOAN SCHEDULE
                             [Provided Upon Request]

                                      B-1
<PAGE>

                                    EXHIBIT C
                                   [RESERVED]

                                      C-1
<PAGE>

                                    EXHIBIT D

                        REQUEST FOR RELEASE OF DOCUMENTS

To:  Wells Fargo Bank, N.A.
     1015 10th Avenue S.E.
     Minneapolis Minnesota 55414
     Attn: ______________________

      Re:   Custodial Agreement dated as of July 28, 2006 among HSBC Bank USA,
            National Association, Merrill Lynch Mortgage Investors, Inc. and
            Wells Fargo Bank, N.A.

      In connection with the administration of the Mortgage Loans held by you as
Custodian for the Owner pursuant to the above-captioned Custodial Agreement, we
request the release, and hereby acknowledge receipt, of the Custodian's Mortgage
File for the Mortgage Loan described below, for the reason indicated.

Mortgage Loan Number:

Mortgagor Name, Address & Zip Code:

Reason for Requesting Documents (check one):

__________ 1. Mortgage Paid in full

__________ 2. Foreclosure

__________ 3. Substitution

__________ 4. Other Liquidation (Repurchases, etc.)

__________ 5. Nonliquidation                      Reason:_______________________

                                                  By:___________________________
                                                        (authorized signer)

                                                  Issuer:_______________________
                                                  Address:______________________
                                                         _______________________
                                                  Date: ________________________

                                      D-1
<PAGE>

Custodian

Wells Fargo Bank, N.A.

Please acknowledge the execution of the above request by your signature and date
below:

Please acknowledge the execution of the above request by your signature and date
below:

_________________________________                 ______________________________
Signature                                          Date

Documents returned to Custodian:

_________________________________                 ______________________________
Custodian                                          Date

                                      D-2
<PAGE>

                                   EXHIBIT E-1
                    FORM OF TRANSFEREE'S LETTER AND AFFIDAVIT

                                     [DATE]

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, Maryland 21045

Attention: Corporate Trust Services - Merrill Lynch Mortgage Investors Trust,
Series 2006-A4

Ladies and Gentlemen:

We propose to purchase Merrill Lynch Mortgage Investors Trust, Series 2006-A4
Mortgage Pass-Through Certificates, Class A-R, described in the Prospectus
Supplement, dated July [26], 2006, and the Prospectus, dated March 31, 2006.
Capitalized terms used but not defined herein shall have the meanings assigned
to them in the Pooling and Servicing Agreement dated July 1, 2006 relating to
this issuance of the Merrill Lynch Mortgage Investors Trust, Series 2006-A4
Mortgage Pass-Through Certificates (the "Pooling and servicing Agreement").

1. We certify that (a) we are not a disqualified organization and (b) we are not
purchasing such Class A-R Certificate on behalf of a disqualified organization;
for this purpose the term "disqualified organization" means the United States,
any state or political subdivision thereof, any foreign government, any
international organization, any agency or instrumentality of any of the
foregoing (except any entity treated as other than an instrumentality of the
foregoing for purposes of Section 168(h)(2)(D) of the Internal Revenue Code of
1986, as amended (the "Code")), any organization (other than a cooperative
described in Section 521 of the Code) that is exempt from taxation under the
Code (unless such organization is subject to tax on excess inclusions) and any
organization that is described in Section 1381(a)(2)(C) of the Code. We
understand that any breach by us of this certification may cause us to be liable
for an excise tax imposed upon transfers to disqualified organizations.

2. We certify that (a) we have historically paid our debts as they became due,
(b) we intend, and believe that we will be able, to continue to pay our debts as
they become due in the future, (c) we understand that, as beneficial owner of
the Class A-R Certificate, we may incur tax liabilities in excess of any cash
flows generated by the Class A-R Certificate, and (d) we intend to pay any taxes
associated with holding the Class A-R Certificate as they become due and (e) we
will not cause income from the Class A-R Certificate to be attributable to a
foreign permanent establishment or fixed base (within the meaning of an
applicable income tax treaty) of ours or another U.S. taxpayer.

                                     E-1-1
<PAGE>

3. We acknowledge that we will be the beneficial owner of the Class A-R
Certificate and:(1)

     _____________  The Class A-R Certificate will be registered in our name.
     _____________  The Class A-R Certificate will be held in the name of our
                    nominee, _________________, which is not a
                    disqualified organization.

4. We certify that we are not an employee benefit plan subject to Title I of the
Employee Retirement Income Security Act of 1974, as amended ("ERISA"), a plan
subject to Section 4975 of the Code or a plan subject to federal, state, local,
non-U.S. or other law substantively similar to the foregoing provisions of ERISA
or the Code (each, a "Plan"), and are not directly or indirectly acquiring the
Class A-R Certificate on behalf of or with any assets of a Plan.

5. We certify that (i) we are a U.S. person or (ii) we will hold the Class A-R
Certificate in connection with the conduct of a trade or business within the
United States and have furnished the transferor and the Securities Administrator
with a duly completed and effective Internal Revenue Service Form W-8ECI or
successor form at the time and in the manner required by the Code; for this
purpose the term "U.S. person" means a citizen or resident of the United States,
a corporation, or partnership (unless, in the case of a partnership, Treasury
regulations are adopted that provide otherwise) created or organized in or under
the laws of the United States, any State thereof or the District of Columbia,
including an entity treated as a corporation or partnership for federal income
tax purposes, an estate whose income is subject to United States federal income
tax regardless of the source of its income, or a trust if a court within the
United States is able to exercise primary supervision over the administration of
the trust and one or more such U.S. persons have the authority to control all
substantial decisions of the trust (or, to the extent provided in applicable
Treasury regulations, certain trusts in existence on August 20, 1996 which are
eligible to elect to be treated as U.S. Persons. We agree that any breach by us
of this certification shall render the transfer of any interest in the Class A-R
Certificate to us absolutely null and void and shall cause no rights in the
Class A-R Certificate to vest in us.

6. We agree that in the event that at some future time we wish to transfer any
interest in the Class A-R Certificate, we will transfer such interest in the
Class A-R Certificate only (a) to a transferee that (i) is not a disqualified
organization and is not purchasing such interest in the Class A-R Certificate on
behalf of a disqualified organization, (ii) is a U.S. person or will hold the
Class A-R Certificate in connection with the conduct of a trade or business
within the United States and will furnish us and the Securities Administrator
with a duly completed and effective Internal Revenue Service Form W-8ECI or
successor form at the time and in the manner required by the Code and (iii) has
delivered to the Securities Administrator a letter in the form of this letter
(including the affidavit appended hereto) and, we will provide the Securities
Administrator a written statement substantially in the form of Exhibit E-2 to
the Pooling and Servicing Agreement.

7. We hereby designate _______________________ as our fiduciary to act as the
tax matters person for each of the REMICs provided for in the Pooling and
Servicing Agreement in which the Class A-R Certificate represents the residual
interest.

------------
(1)   Check appropriate box and if necessary fill in the name of the
      Transferee's nominee.

                                     E-1-2
<PAGE>

                                                  Very truly yours,

                                                  [Purchaser]

                                                  By:   ________________________
                                                  Name:
                                                  Title:

Accepted as of __________ __, 200__

MERRILL LYNCH MORTGAGE INVESTORS, INC.

By:
     _____________________________________
     Name:
     Title:

                                     E-1-3
<PAGE>

                                   APPENDIX A

                                          Affidavit pursuant to (i) Section
                                          860E(e)(4) of the Internal Revenue
                                          Code of 1986, as amended, and (ii)
                                          certain provisions of the Pooling and
                                          Servicing Agreement

Under penalties of perjury, the undersigned declares that the following is true:

      1.    He or she is an officer of _________________________ (the
            "Investor"),

      2.    the Investor's Employer Identification number is __________,

      3.    the Investor is not a "disqualified organization" (as defined
            below), has no plan or intention of becoming a disqualified
            organization, and is not acquiring any of its interest in the
            Merrill Lynch Mortgage Investors Trust, Series 2006-A4 Mortgage
            Pass-Through Certificates, Class A-R Certificate on behalf of a
            disqualified organization or any other entity,

      4.    unless Merrill Lynch Mortgage Investors, Inc. ("MLMI") has consented
            to the transfer to the Investor, the Investor is a "U.S. person" (as
            defined below),

      5.    that no purpose of the transfer is to avoid or impede the assessment
            or collection of tax,

      6.    the Investor has historically paid its debts as they became due,

      7.    the Investor intends, and believes that it will be able, to continue
            to pay its debts as they become due in the future,

      8.    the Investor understands that, as beneficial owner of the Class A-R
            Certificate, it may incur tax liabilities in excess of any cash
            flows generated by the Class A-R Certificate,

      9.    the Investor intends to pay any taxes associated with holding the
            Class A-R Certificate as they become due,

      10.   the Investor consents to any amendment of the Pooling and Servicing
            Agreement that shall be deemed necessary by MLMI (upon advice of
            counsel) to constitute a reasonable arrangement to ensure that the
            Class A-R Certificate will not be owned directly or indirectly by a
            disqualified organization, and

      11.   IF BRACKETED, THE FOLLOWING CERTIFICATIONS ARE INAPPLICABLE [the
            transfer is not a direct or indirect transfer of the Class A-R
            Certificate to a foreign permanent establishment or fixed base
            (within the meaning of an applicable income tax treaty) of the
            Investor, and as to each of the residual interests represented by
            the Class A-R Certificate, the present value of the anticipated tax
            liabilities associated with holding such residual interest does not
            exceed the sum of:

                                     E-1-4
<PAGE>

                  A.    the present value of any consideration given to the
                        Investor to acquire such residual interest;

                  B.    the present value of the expected future distributions
                        on such residual interest; and

                  C.    the present value of the anticipated tax savings
                        associated with holding such residual interest as the
                        related REMIC generates losses.

      For purposes of this declaration, (i) the Investor is assumed to pay tax
      at a rate equal to the highest rate of tax specified in Section 11(b)(1)
      of the Code, but the tax rate specified in Section 55(b)(1)(B) of the Code
      may be used in lieu of the highest rate specified in Section 11(b)(1) of
      the Code if the Investor has been subject to the alternative minimum tax
      under Section 55 of the Code in the preceding two years and will compute
      its taxable income in the current taxable year using the alternative
      minimum tax rate, and (ii) present values are computed using a discount
      rate equal to the Federal short-term rate prescribed by Section 1274(d) of
      the Code for the month of the transfer and the compounding period used by
      the Investor;]

[(11) (A)   at the time of the transfer, and at the close of each of the
            Investor's two fiscal years preceding the Investor's fiscal year of
            transfer, the Investor's gross assets for financial reporting
            purposes exceed $100 million and its net assets for financial
            reporting purposes exceed $10 million; and

      (B)   the Investor is an eligible corporation as defined in Treasury
            regulations Section 1.860E-1(c)(6)(i) and has agreed in writing that
            any subsequent transfer of the Class A-R Certificate will be to
            another eligible corporation in a transaction that satisfies
            Treasury regulation Sections 1.860E-1(c)(4)(i), 1.860E-1(c)(4)(ii),
            1.860E-1(c)(4)(iii) and 1.860E-1(c)(5) and such transfer will not be
            a direct or indirect transfer to a foreign permanent establishment
            (within the meaning of an applicable income tax treaty) of a
            domestic corporation.

For purposes of this declaration, the gross and net assets of the Investor do
not include any obligation of any related person as defined in Treasury
regulation Section 1.860E-1(c)(6)(ii) or any other asset if a principal purpose
for holding or acquiring the other asset is to permit the Investor to make this
declaration or to satisfy the requirements of Treasury regulation Section
1.860E-1(c)(5)(i).]

(12) The Investor will not cause income from the Class A-R Certificate to be
attributable to a foreign permanent establishment or fixed base (within the
meaning of an applicable income tax treaty) of the Investor or another U.S.
taxpayer.

                                     E-1-5
<PAGE>

For purpose of this affidavit, the term "disqualified organization" means the
United States, any state or political subdivision thereof, any foreign
government, any international organization, any agency or instrumentality of any
of the foregoing (except any entity treated as other than an instrumentality of
the foregoing for purposes of Section 168(h)(2)(D) of the Internal Revenue Code
of 1986, as amended (the "Code")), any organization (other than a cooperative
described in Section 521 of the Code) that is exempt from taxation under the
Code (unless such organization is subject to tax on excess inclusions) and any
organization that is described in Section 1381(a)(2)(C) of the Code and the term
"U.S. Person" means a citizen or resident of the United States, a corporation or
partnership (unless, in the case of a partnership, Treasury regulations are
adopted that provide otherwise) created or organized in or under the laws of the
United States, any state thereof or the District of Columbia, including an
entity treated as a corporation or partnership for federal income tax purposes,
an estate whose income is subject to Unites States federal income tax regardless
of its source, or a trust if a court within the United States is able to
exercise primary supervision over the administration of such trust, and one or
more such U.S. Persons have the authority to control all substantial decisions
of such trust, (or, to the extent provided in applicable Treasury regulations,
certain trusts in existence on August 20, 1996 which are eligible to elect to be
treated as U.S. Persons).

                                     E-1-6
<PAGE>

IN WITNESS WHEREOF, the Investor has caused this instrument to be executed on
its behalf, pursuant to authority of its Board of Directors, by its
_____________ this ___ day of ______________, 20__.

                                         [INVESTOR]

                                         By:   _________________________________
                                               Name:
                                               Title:

Personally appeared before me the above-named _______________________, known or
proved to me to be the same person who executed the foregoing instrument and to
be the ____________________________of the Investor, and acknowledged to me that
he executed the same as his free act and deed and the free act and deed of the
Investor.

Subscribed and sworn before me this ___ day of ______________, 20__.

NOTARY PUBLIC

______________________________

COUNTY OF_____________________

STATE OF______________________

My commission expires the _____ day of __________ 20__.

                                     E-1-7
<PAGE>

                                   EXHIBIT E-2
                         FORM OF TRANSFEROR CERTIFICATE

                                     [DATE]

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045
Attention: Corporate Trust Services - Merrill Lynch Mortgage Investors Trust,
Series 2006-A4

Re:   Merrill Lynch Mortgage Investors Trust, Series 2006-A4

_______________________ (the "Transferor") has reviewed the attached affidavit
of _____________________________ (the "Transferee"), and has no actual knowledge
that such affidavit is not true, and has no reason to believe that the
Transferee has the intention to impede the assessment or collection of any
federal, state or local taxes legally required to be paid with respect to the
Class A-R Certificate referred to in the attached affidavit. In addition, the
Transferor has conducted a reasonable investigation at the time of the transfer
and found that the Transferee had historically paid its debts as they came due
and found no significant evidence to indicate that the Transferee will not
continue to pay its debts as they become due.

                                           Very truly yours,

                                           [Transferor]

                                           By:    ______________________________
                                           Name:
                                           Title:

                                     E-2-1
<PAGE>

                                   EXHIBIT F-1
                    FORM OF TRANSFEROR REPRESENTATION LETTER

                                                          ______________, 200___

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center
New York, New York 10281

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

Re:   Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through
      Certificates, Series 2006-A4, Class [___]

Ladies and Gentlemen:

      In connection with the sale by ___________ (the "Seller") to ________ (the
"Purchaser") of $_________ Initial Certificate Principal Balance of Mortgage
Pass-Through Certificates, Series 2006-A4, Class _____ (the "Certificates"),
issued pursuant to the Pooling and Servicing Agreement (the "Pooling and
Servicing Agreement"), dated as of July 1, 2006 among Merrill Lynch Mortgage
Investors, Inc., as depositor (the "Depositor"), Wells Fargo Bank, N.A. as
master servicer (in such capacity, the "Master Servicer") and securities
administrator (in such capacity, the "Securities Administrator"), and HSBC Bank
USA, National Association, as trustee (the "Trustee"). The Seller hereby
certifies, represents and warrants to, and covenants with, the Depositor and the
Securities Administrator that:

      Neither the Seller nor anyone acting on its behalf has (a) offered,
pledged, sold, disposed of or otherwise transferred any Certificate, any
interest in any Certificate or any other similar security to any person in any
manner, (b) has solicited any offer to buy or to accept a pledge, disposition or
other transfer of any Certificate, any interest in any Certificate or any other
similar security from any person in any manner, (c) has otherwise approached or
negotiated with respect to any Certificate, any interest in any Certificate or
any other similar security with any person in any manner, (d) has made any
general solicitation by means of general advertising or in any other manner, or
(e) has taken any other action, that (as to any of (a) through (e) above) would
constitute a distribution of the Certificates under the Securities Act of 1933
(the "Act"), that would render the disposition of any Certificate a violation of
Section 5 of the Act or any state securities law, or that would require
registration or qualification pursuant thereto. The Seller will not act in any
manner set forth in the foregoing sentence with respect to any Certificate. The
Seller has not and will not sell or otherwise transfer any of the Certificates,
except in compliance with the provisions of the Pooling and Servicing Agreement.

                                     F-1-1
<PAGE>

                                           Very truly yours,

                                           _____________________________________
                                           (Seller)

                                           By:    ______________________________
                                           Name:  ______________________________
                                           Title: ______________________________

                                     F-1-2
<PAGE>

                                   EXHIBIT F-2
             FORM OF INVESTOR REPRESENTATION LETTER (NON-RULE 144A)

                                                               __________, 200__

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center
New York, New York 10281

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

      Re:   Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through
            Certificates, Series 2006-A4, Class [ ]

Ladies and Gentlemen:

      In connection with our acquisition of the above Certificates we certify
that (a) we understand that the Certificates are not being registered under the
Securities Act of 1933, as amended (The "Act"), or any state securities laws and
are being transferred to us in a transaction that is exempt from the
registration requirements of the Act and any such laws, (b) we are an
institutional "accredited investor," as defined in Regulation D under the Act,
and have such knowledge and experience in financial and business matters that we
are capable of evaluating the merits and risks of investments in the
Certificates, (c) we have had the opportunity to ask questions of and receive
answers from the Depositor concerning the purchase of the Certificates and all
matters relating thereto or any additional information deemed necessary to our
decision to purchase the Certificates, (d) solely in the case of an ERISA
Restricted Certificate, we (i) are not an employee benefit plan or arrangement
subject to Title I of the Employee Retirement Income Security Act of 1974, as
amended ("ERISA"), a plan subject to Section 4975 of the Internal Revenue Code
of 1986, as amended (the "Code") or a plan subject to any provisions under any
federal, state, local, non-U.S. or other laws or regulations that are
substantively similar to foregoing provisions of ERISA or the Code ("Similar
Law") (collectively, a "Plan"), and are not directly or indirectly acquiring
this Certificate for, on behalf of or with any assets of any such Plan, (ii) if
the Certificate has been the subject of an ERISA-Qualifying Underwriting, are an
insurance company that is acquiring the Certificate with assets of an "insurance
company general account" as defined in Section V(E) of Prohibited Transaction
Class Exemption ("PTCE") 95-60, and the acquisition and holding of the
Certificate are covered and exempt under Sections I and III of PTCE 95-60, or
(iii) solely in the case of a Definitive Certificate, shall deliver herewith an
Opinion of Counsel satisfactory to the Securities Administrator, and upon which
the Securities Administrator shall be entitled to rely, to the effect that the
acquisition and holding of this certificate by the transferee will not result in
a nonexempt prohibited transaction under ERISA or the Code, or a violation of
Similar Law, and will not subject the Depositor, the Master Servicer, the
Securities Administrator or the Trustee to any obligation in addition to those
undertaken by such entities in the Pooling and Servicing Agreement, which
Opinion of Counsel shall not be an expense of the Depositor, the Master
Servicer, the Securities Administrator or the Trustee, (e) we are acquiring the
Certificates for investment for our own account and not with a

                                     F-2-1
<PAGE>

view to any distribution of such Certificates (but without prejudice to our
right at all times to sell or otherwise dispose of the Certificates in
accordance with clause (g) below), (f) we have not offered or sold any
Certificates to, or solicited offers to buy any Certificates from, any person,
or otherwise approached or negotiated with any person with respect thereto, or
taken any other action which would result in a violation of Section 5 of the
Act, and (g) we will not sell, transfer or otherwise dispose of any Certificates
unless (1) such sale, transfer or other disposition is made pursuant to an
effective registration statement under the Act or is exempt from such
registration requirements, and if requested, we will at our expense provide an
opinion of counsel satisfactory to the addressees of this Certificate that such
sale, transfer or other disposition may be made pursuant to an exemption from
the Act, (2) The purchaser or transferee of such Certificate has executed and
delivered to you a certificate to substantially the same effect as this
certificate, and (3) The purchaser or transferee has otherwise complied with any
conditions for transfer set forth in the Pooling and Servicing Agreement.

                                       Very truly yours,

                                      __________________________________________
                                       Print Name of Transferee

                                       By:     _________________________________
                                                Authorized Officer

                                     F-2-2
<PAGE>

                                   EXHIBIT F-3
                            FORM OF RULE 144A LETTER

                                                              ____________, 2006

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center
New York, New York 10281

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

      Re:   Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through
            Certificates, Series 2006-A4, Class [ ]

Ladies and Gentlemen:

      In connection with our acquisition of the above Certificates we certify
that (a) we understand that the Certificates are not being registered under the
Securities Act of 1933, as amended (The "Act"), or any state securities laws and
are being transferred to us in a transaction that is exempt from the
registration requirements of the Act and any such laws, (b) we have such
knowledge and experience in financial and business matters that we are capable
of evaluating the merits and risks of investments in the Certificates, (c) we
have had the opportunity to ask questions of and receive answers from the
Depositor concerning the purchase of the Certificates and all matters relating
thereto or any additional information deemed necessary to our decision to
purchase the Certificates, (d) solely in the case of an ERISA Restricted
Certificate, we (i) are not an employee benefit plan or arrangement subject to
Title I of the Employee Retirement Income Security Act of 1974, as amended
("ERISA"), a plan subject to Section 4975 of the Internal Revenue Code of 1986,
as amended (the "Code") or a plan subject to any provisions under any federal,
state, local, non-U.S. or other laws or regulations that are substantively
similar to foregoing provisions of ERISA or the Code ("Similar Law")
(collectively, a "Plan"), and are not directly or indirectly acquiring this
Certificate for, on behalf of or with any assets of any such Plan, (ii) if the
Certificate has been the subject of an ERISA-Qualifying Underwriting, are an
insurance company that is acquiring the Certificate with assets of an "insurance
company general account" as defined in Section V(E) of Prohibited Transaction
Class Exemption ("PTCE") 95-60, and the acquisition and holding of the
Certificate are covered and exempt under Sections I and III of PTCE 95-60, or
(iii) solely in the case of a Definitive Certificate, shall deliver herewith an
Opinion of Counsel satisfactory to the Securities Administrator, and upon which
the Securities Administrator shall be entitled to rely, to the effect that the
acquisition and holding of this certificate by the transferee will not result in
a nonexempt prohibited transaction under ERISA or the Code, or a violation of
Similar Law, and will not subject the Depositor, the Master Servicer, the
Securities Administrator or the Trustee to any obligation in addition to those
undertaken by such entities in the Pooling and Servicing Agreement, which
Opinion of Counsel shall not be an expense of the Depositor, the Master
Servicer, the Securities Administrator or the Trustee, (e) we have not, nor has
anyone acting on our behalf offered, transferred, pledged, sold or otherwise
disposed of the Certificates, any interest in the Certificates or any other
similar

                                     F-3-1
<PAGE>

security to, or solicited any offer to buy or accept a transfer, pledge or other
disposition of the Certificates, any interest in the Certificates or any other
similar security from, or otherwise approached or negotiated with respect to the
Certificates, any interest in the Certificates or any other similar security
with, any person in any manner, or made any general solicitation by means of
general advertising or in any other manner, or taken any other action, that
would constitute a distribution of the Certificates under the Act or that would
render the disposition of the Certificates a violation of Section 5 of the Act
or require registration pursuant thereto, nor will act, nor has authorized or
will authorize any person to act, in such manner with respect to the
Certificates, (f) we are a "qualified institutional buyer" as that term is
defined in Rule 144A under the Act ("Rule 144A") and have completed either of
the forms of certification to that effect attached hereto as Annex 1 or Annex 2,
(g) we are aware that the sale to us is being made in reliance on Rule 144A, and
(h) we are acquiring the Certificates for our own account or for resale pursuant
to Rule 144A and further, understand that such Certificates may be resold,
pledged or transferred only (A) to a person reasonably believed to be a
qualified institutional buyer that purchases for its own account or for the
account of a qualified institutional buyer to whom notice is given that the
resale, pledge or transfer is being made in reliance on Rule 144A, or (B)
pursuant to another exemption from registration under the Act.

                                       Very truly yours,

                                      __________________________________________
                                       Print Name of Transferee

                                       By:     _________________________________
                                                 Authorized Officer

                                     F-3-2
<PAGE>

                                                          ANNEX I TO EXHIBIT F-3

            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A
[For Transferees Other Than Registered Investment Companies]

      The undersigned (The "Buyer") hereby certifies as follows to the parties
listed in the Rule 144A Transferee Certificate to which this certification
relates with respect to the Certificates described therein:

      1. As indicated below, The undersigned is the President, Chief Financial
Officer, Senior Vice President or other executive officer of the Buyer.

      2. In connection with purchases by the Buyer, The Buyer is a "qualified
institutional buyer" as that term is defined in Rule 144A under the Securities
Act of 1933, as amended ("Rule 144A") because (i) The Buyer owned and/or
invested on a discretionary basis $___________(1) in securities (except for the
1 excluded securities referred to below) as of the end of the Buyer's most
recent fiscal year (such amount being calculated in accordance with Rule 144A
and (ii) The Buyer satisfies the criteria in the category marked below.

      ___ Corporation, etc. The Buyer is a corporation (other than a bank,
savings and loan association or similar institution), Massachusetts or similar
business trust, partnership, or charitable organization described in Section
501(c)(3) of the Internal Revenue Code of 1986, as amended.

      ___ Bank. The Buyer (a) is a national bank or banking institution
organized under the laws of any State, territory or the District of Columbia,
The business of which is substantially confined to banking and is supervised by
the State or territorial banking commission or similar official or is a foreign
bank or equivalent institution, and (b) has an audited net worth of at least
$25,000,000 as demonstrated in its latest annual financial statements, a copy of
which is attached hereto.

      ___ Savings and Loan. The Buyer (a) is a savings and loan association,
building and loan association, cooperative bank, homestead association or
similar institution, which is supervised and examined by a State or Federal
authority having supervision over any such institutions or is a foreign savings
and loan association or equivalent institution and (b) has an audited net worth
of at least $25,000,000 as demonstrated in its latest annual financial
statements, a copy of which is attached hereto.

      ___ Broker-dealer. The Buyer is a dealer registered pursuant to Section 15
of the Securities Exchange Act of 1934.

      ___ Insurance Company. The Buyer is an insurance company whose primary and
predominant business activity is the writing of insurance or the reinsuring of
risks underwritten

---------------
(1)      Buyer must own and/or invest on a discretionary basis at least
         $100,000,000 in securities unless Buyer is a dealer, and, in that case,
         Buyer must own and/or invest on a discretionary basis at least
         $10,000,000 in securities.

                                     F-3-3
<PAGE>

by insurance companies and which is subject to supervision by the insurance
commissioner or a similar official or agency of a State, territory or the
District of Columbia.

      ___ State or Local Plan. The Buyer is a plan established and maintained by
a State, its political subdivisions, or any agency or instrumentality of the
State or its political subdivisions, for the benefit of its employees.

      ___ ERISA Plan. The Buyer is an employee benefit plan within the meaning
of Title I of the Employee Retirement Income Security Act of 1974.

      ___ Investment Advisor. The Buyer is an investment advisor registered
under the Investment Advisors Act of 1940.

      ___ Small Business Investment Company. Buyer is a small business
investment company licensed by the U.S. Small Business Administration under
Section 301(c) or (d) of the Small Business Investment Act of 1958.

      ___ Business Development Company. Buyer is a business development company
as defined in Section 202(a)(22) of the Investment Advisors Act of 1940.

      3. The term "securities" as used herein does not include (i) securities of
issuers that are affiliated with the Buyer, (ii) securities that are part of an
unsold allotment to or subscription by the Buyer, if the Buyer is a dealer,
(iii) securities issued or guaranteed by the U.S. or any instrumentality
thereof, (iv) bank deposit notes and certificates of deposit, (v) loan
participations, (vi) repurchase agreements, (vii) securities owned but subject
to a repurchase agreement and (viii) currency, interest rate and commodity
swaps.

      4. For purposes of determining the aggregate amount of securities owned
and/or invested on a discretionary basis by the Buyer, The Buyer used the cost
of such securities to the Buyer and did not include any of the securities
referred to in the preceding paragraph, except (i) where the Buyer reports its
securities holdings in its financial statements on the basis of their market
value, and (ii) no current information with respect to the cost of those
securities has been published. If clause (ii) in the preceding sentence applies,
The securities may be valued at market. Further, in determining such aggregate
amount, The Buyer may have included securities owned by subsidiaries of the
Buyer, but only if such subsidiaries are consolidated with the Buyer in its
financial statements prepared in accordance with generally accepted accounting
principles and if the investments of such subsidiaries are managed under the
Buyer's direction. However, such securities were not included if the Buyer is a
majority-owned, consolidated subsidiary of another enterprise and the Buyer is
not itself a reporting company under the Securities Exchange Act of 1934, as
amended.

      5. The Buyer acknowledges that it is familiar with Rule 144A and
understands that the seller to it and other parties related to the Certificates
are relying and will continue to rely on the statements made herein because one
or more sales to the Buyer may be in reliance on Rule 144A.

                                     F-3-4
<PAGE>

      6. Until the date of purchase of the Rule 144A Securities, The Buyer will
notify each of the parties to which this certification is made of any changes in
the information and conclusions herein. Until such notice is given, The Buyer's
purchase of the Certificates will constitute a reaffirmation of this
certification as of the date of such purchase. In addition, if the Buyer is a
bank or savings and loan is provided above, The Buyer agrees that it will
furnish to such parties updated annual financial statements promptly after they
become available.

                                      __________________________________________
                                      Print Name of Buyer

                                      By:    ___________________________________
                                      Name:
                                      Title:

                                      Date:  ___________________________________

                                     F-3-5
<PAGE>

                                                         ANNEX II TO EXHIBIT F-3

            QUALIFIED INSTITUTIONAL BUYER STATUS UNDER SEC RULE 144A
           [For Transferees That are Registered Investment Companies]

      The undersigned (The "Buyer") hereby certifies as follows to the parties
listed in the Rule 144A Transferee Certificate to which this certification
relates with respect to the Certificates described therein:

1. As indicated below, The undersigned is the President, Chief Financial Officer
or Senior Vice President of the Buyer or, if the Buyer is a "qualified
institutional buyer" as that term is defined in Rule 144A under the Securities
Act of 1933, as amended ("Rule 144A") because Buyer is part of a Family of
Investment Companies (as defined below), is such an officer of the Adviser.

2. In connection with purchases by Buyer, The Buyer is a "qualified
institutional buyer" as defined in SEC Rule 144A because (i) The Buyer is an
investment company registered under the Investment Company Act of 1940, as
amended and (ii) as marked below, The Buyer alone, or the Buyer's Family of
Investment Companies, owned at least $100,000,000 in securities (other than the
excluded securities referred to below) as of the end of the Buyer's most recent
fiscal year. For purposes of determining the amount of securities owned by the
Buyer or the Buyer's Family of Investment Companies, The cost of such securities
was used, except (i) where the Buyer or the Buyer's Family of Investment
Companies reports its securities holdings in its financial statements on the
basis of their market value, and (ii) no current information with respect to the
cost of those securities has been published. If clause (ii) in the preceding
sentence applies, The securities may be valued at market.

      ___ The Buyer owned $ in securities (other than the excluded securities
referred to below) as of the end of the Buyer's most recent fiscal year (such
amount being calculated in accordance with Rule 144A).

      ___ The Buyer is part of a Family of Investment Companies which owned in
the aggregate $ in securities (other than the excluded securities referred to
below) as of the end of the Buyer's most recent fiscal year (such amount being
calculated in accordance with Rule 144A).

3. The term "Family of Investment Companies" as used herein means two or more
registered investment companies (or series thereof) that have the same
investment adviser or investment advisers that are affiliated (by virtue of
being majority owned subsidiaries of the same parent or because one investment
adviser is a majority owned subsidiary of the other).

4. The term "securities" as used herein does not include (i) securities of
issuers that are affiliated with the Buyer or are part of the Buyer's Family of
Investment Companies, (ii) securities issued or guaranteed by the U.S. or any
instrumentality thereof, (iii) bank deposit notes and certificates of deposit,
(iv) loan participations, (v) repurchase agreements, (vi) securities owned but
subject to a repurchase agreement and (vii) currency, interest rate and
commodity swaps.

                                     F-3-6
<PAGE>

5. The Buyer is familiar with Rule 144A and understands that the parties listed
in the Rule 144A Transferee Certificate to which this certification relates are
relying and will continue to rely on the statements made herein because one or
more sales to the Buyer will be in reliance on Rule 144A. In addition, The Buyer
will only purchase for the Buyer's own account.

6. Until the date of purchase of the Certificates, The undersigned will notify
the parties listed in the Rule 144A Transferee Certificate to which this
certification relates of any changes in the information and conclusions herein.
Until such notice is given, The Buyer's purchase of the Certificates will
constitute a reaffirmation of this certification by the undersigned as of the
date of such purchase.

                                      __________________________________________
                                       Print Name of Buyer or Adviser

                                       By:     _________________________________
                                       Name:
                                       Title:

                                       IF AN ADVISER:

                                      __________________________________________
                                       Print Name of Buyer

                                       Date:   _________________________________

                                     F-3-7
<PAGE>

                                    EXHIBIT G
                           FORM OF CUSTODIAL AGREEMENT

            THIS CUSTODIAL AGREEMENT (as amended and supplemented from time to
time, the "Agreement"), dated as of July 28, 2006, by and among HSBC BANK USA,
NATIONAL ASSOCIATION, as trustee (including its successors under the Pooling and
Servicing Agreement defined below, the "Trustee"), MERRILL LYNCH MORTGAGE
INVESTORS, INC., as company (together with any successor in interest, the
"Company"), WELLS FARGO BANK, N.A., as securities administrator and master
servicer (together with any successor in interest or successor under the Pooling
and Servicing Agreement referred to below, the "Master Servicer") and WELLS
FARGO BANK, N.A., as custodian (together with any successor in interest or any
successor appointed hereunder, the "Custodian").

                                WITNESSETH THAT:

            WHEREAS, the Company, the Master Servicer and the Trustee have
entered into a Pooling and Servicing Agreement, dated as of July 1, 2006,
relating to the issuance of Merrill Lynch Mortgage Investors Trust., Series
2006-A4 Mortgage Pass-Through Certificates, (as in effect on the date of this
agreement, the "Original Pooling and Servicing Agreement," and as amended and
supplemented from time to time, the "Pooling and Servicing Agreement"); and

            WHEREAS, the Custodian has agreed to act as agent for the Trustee
for the purposes of receiving and holding certain documents and other
instruments delivered by the Company or the Master Servicer under the Pooling
and Servicing Agreement and the Servicers under the their respective Servicing
Agreements, all upon the terms and conditions and subject to the limitations
hereinafter set forth;

            NOW, THEREFORE, in consideration of the premises and the mutual
covenants and agreements hereinafter set forth, the Trustee, the Company, the
Master Servicer and the Custodian hereby agree as follows:

                                                   ARTICLE XIII
                                                   DEFINITIONS

            Capitalized terms used in this Agreement and not defined herein
shall have the meanings assigned in the Original Pooling and Servicing
Agreement, unless otherwise required by the context herein.

                                  ARTICLE XIV
                         CUSTODY OF MORTGAGE DOCUMENTS

            Section 14.01 Custodian to Act as Agent: Acceptance of Mortgage
Files, Attestations and Assessments of Compliance.

            (a) The Custodian, as the duly appointed agent of the Trustee for
these purposes, acknowledges (subject to any exceptions noted in the Initial
Certification referred to in Section 2.3(a)) receipt of the Mortgage Files
relating to the Mortgage Loans identified on the

                                      G-1
<PAGE>

schedule attached hereto (the "Mortgage Files") and declares that it holds and
will hold such Mortgage Files as agent for the Trustee, in trust, for the use
and benefit of all present and future Certificateholders.

            (b) On or before March 1st of each calendar year, beginning with
March 1, 2007, the Custodian shall, at its own expense, cause a firm of
independent public accountants (who may also render other services to
Custodian), which is a member of the American Institute of Certified Public
Accountants, to furnish to the Company and the Master Servicer a report to the
effect that such firm attests to, and reports on, the assessment made by such
asserting party pursuant to Section 2.01(c) below, which report shall be made in
accordance with standards for attestation engagements issued or adopted by the
Public Company Accounting Oversight Board.

            (c) On or before March 1st of each calendar year, beginning with
March 1, 2007, the Custodian shall deliver to the Company and the Master
Servicer a report regarding its assessment of compliance with the servicing
criteria identified in Exhibit Three attached hereto, as of and for the period
ending the end of the fiscal year ending no later than December 31 of the year
prior to the year of delivery of the report, with respect to asset-backed
security transactions taken as a whole in which the Custodian is performing any
of the servicing criteria specified in Exhibit Three and that are backed by the
same asset type backing such asset-backed securities. Each such report shall
include (a) a statement of the party's responsibility for assessing compliance
with the servicing criteria applicable to such party, (b) a statement that such
party used the criteria identified in Item 1122(d) of Regulation AB (Section.
229.1122(d)) to assess the compliance with the applicable servicing criteria,
(c) disclosure of any material instance of noncompliance identified by such
party, and (d) a statement that a registered public accounting firm has issued
an attestation report on such party's assessment of compliance with the
applicable servicing criteria, which report shall be delivered by the Custodian
as provided in this Section 2.01(c). However, the Custodian's obligation to
provide a report on assessment of compliance or an attestation with respect to
itself and with respect to any Subcontractor shall be suspended in any year in
which the Issuing Entity's reporting obligations under the Exchange Act are
suspended.

            (d) The Custodian has not and shall not engage any Subcontractor
which is "participating in the servicing function" within the meaning of Item
1122 of Regulation AB, unless such Subcontractor agrees to provide in any year
in which a Form 10-K will be filed by the Trust., no later than March 1st of
such year, an assessment and a statement of registered public accounting firm
certifying its compliance with the applicable servicing criteria in Item 1122(d)
of Regulation AB as of and for the period ending the end of the fiscal year
ending no later than December 31 of the year prior to the year of delivery of
the report. "Subcontractor" as used herein means any vendor, subcontractor or
other Person that is not responsible for the overall servicing (as "servicing"
is commonly understood by participants in the mortgage-backed securities market)
of the Mortgage Loans but performs one or more discrete functions identified in
Item 1122(d) of Regulation AB with respect to the Mortgage Loans under the
direction or authority of the Custodian.

            (e) The Custodian agrees to indemnify the Company, the Master
Servicer, the Trust Fund and each of their respective directors, officers,
employees and agents and hold each

                                      G-2
<PAGE>

of them harmless from and against any losses, damages, penalties, fines,
forfeitures, legal fees and expenses and related costs, judgments, and any other
costs, fees and expenses that any of them may sustain arising out of or based
upon the engagement of any Subcontractor in violation of Section 2.01(d) or any
failure by the Custodian to deliver any information, report, certification,
accountants' letter or other material when and as required under this Agreement,
including any report under Sections 2.01(b) or 2.01(c).

            Section 14.02 Recordation of Assignments. If any Mortgage File
includes one or more assignments of Mortgage to the Trustee in a state which is
specifically excluded from the Opinion of Counsel delivered by the Mortgage Loan
Seller to the Trustee (with a copy to the Custodian) pursuant to the provisions
of Section 2.01 of the Pooling and Servicing Agreement, the Custodian shall
deliver each such assignment to the Company for the purpose of recording it in
the appropriate public office for real property records, and the Company, at no
expense to the Custodian, shall promptly cause to be recorded in the appropriate
public office for real property records each such assignment of Mortgage and,
upon receipt thereof from such public office, shall return each such assignment
of Mortgage to the Custodian.

            Section 14.03 Review of Mortgage Files.

            (a) On or prior to the Closing Date, the Custodian agrees, for the
benefit of Certificateholders, to review, in accordance with the provisions of
Section 2.02 of the Pooling and Servicing Agreement, each such document, and
shall deliver to the Trustee an Initial Certification in the form annexed hereto
as Exhibit One evidencing receipt (subject to any exceptions noted therein) of a
Mortgage File for each of the Mortgage Loans listed on the Schedule attached
hereto (the "Mortgage Loan Schedule") and certifying that all such documents
have been executed and received and that such documents relate to the Mortgage
Loans identified on the Mortgage Loan Schedule, except for any exceptions listed
on Schedule A attached to such Initial Certification. The Custodian shall be
under no duty or obligation to inspect, review or examine said documents,
instruments, certificates or other papers to determine that the same are
genuine, enforceable, or appropriate for the represented purpose or that they
have actually been recorded or that they are other than what they purport to be
on their face.

            (b) Not later than 180 days after the Closing Date, the Custodian
shall review the Mortgage Files as provided in Section 2.02 of the Pooling and
Servicing Agreement and deliver to the Trustee a Final Certification in the form
annexed hereto as Exhibit Two evidencing the completeness of the Mortgage Files
(subject to any exceptions noted therein).

            (c) In reviewing the Mortgage Files as provided herein and in the
Pooling and Servicing Agreement, the Custodian shall make no representation as
to and shall not be responsible to verify (i) the validity, legality,
enforceability, due authorization, recordability, sufficiency or genuineness of
any of the documents included in any Mortgage File or (ii) the collectibility,
insurability, effectiveness or suitability of any of the documents in any
Mortgage File.

            Upon receipt of written request from the Trustee, the Custodian
shall as soon as practicable supply the Trustee with a list of all of the
documents relating to the Mortgage Loans then contained in the Mortgage Files.

                                      G-3
<PAGE>

            Section 14.04 Notification of Breaches of Representations and
Warranties. Upon discovery by the Custodian of a breach of any representation or
warranty made by the Company as set forth in the Pooling and Servicing Agreement
with respect to a Mortgage Loan relating to a Mortgage File, the Custodian shall
give prompt written notice to the Company, the related Servicer and the Trustee.

            Section 14.05 Custodian to Cooperate: Release of Mortgage Files.
Upon receipt of written notice from the Master Servicer that the Mortgage Loan
Seller has repurchased a Mortgage Loan pursuant to Article II of the Pooling and
Servicing Agreement, and that the purchase price therefor has been deposited in
the Master Servicer Collection Account or the Distribution Account, then the
Custodian agrees to promptly release to the Mortgage Loan Seller the related
Mortgage File.

            Upon the Custodian's receipt of a request for release (a "Request
for Release") substantially in the form of Exhibit D to the Pooling and
Servicing Agreement signed by a Servicing Officer of the related Servicer
stating that it has received payment in full of a Mortgage Loan or that payment
in full will be escrowed in a manner customary for such purposes, the Custodian
agrees promptly to release to such Servicer the related Mortgage File. The
Company shall deliver to the Custodian and the Custodian agrees to accept the
Mortgage Note and other documents constituting the Mortgage File with respect to
any Substitute Mortgage Loan.

            From time to time as is appropriate for the servicing or foreclosure
of any Mortgage Loan, including, for this purpose, collection under any Primary
Mortgage Insurance Policy, the related Servicer shall deliver to the Custodian a
Request for Release signed by a Servicing Officer requesting that possession of
all of the Mortgage File be released to such Servicer and certifying as to the
reason for such release and that such release will not invalidate any insurance
coverage provided in respect of the Mortgage Loan under any of the Insurance
Policies. Upon receipt of the foregoing, the Custodian shall deliver the
Mortgage File to such Servicer. The related Servicer shall cause each Mortgage
File or any document therein so released to be returned to the Custodian when
the need therefore by such Servicer no longer exists, unless (i) the Mortgage
Loan has been liquidated and the Liquidation Proceeds relating to the Mortgage
Loan have been deposited in the Master Servicer Collection Account or the
Distribution Account or (ii) the Mortgage File or such document has been
delivered to an attorney, or to a public trustee or other public official as
required by law, for purposes of initiating or pursuing legal action or other
proceedings for the foreclosure of the Mortgaged Property either judicially or
non-judicially, and the related Servicer has delivered to the Custodian a
certificate of a Servicing Officer certifying as to the name and address of the
Person to which such Mortgage File or such document was delivered and the
purpose or purposes of such delivery.

            At any time that a Servicer is required to deliver to the Custodian
a Request for Release, such Servicer shall deliver two copies of the Request for
Release if delivered in hard copy or such Servicer may furnish such Request for
Release electronically to the Custodian, in which event the Servicing Officer
transmitting the same shall be deemed to have signed the Request for Release. In
connection with any Request for Release of a Mortgage File because of

                                      G-4
<PAGE>

a repurchase of a Mortgage Loan, the related Servicer shall send to the Trustee
an assignment of mortgage, without recourse, representation or warranty from the
Trustee to the Mortgage Loan Seller and the related Mortgage Note which shall be
endorsed without recourse, representation or warranty by the Trustee and the
Trustee shall forward such documents to the Mortgage Loan Seller. In connection
with any Request for Release of a Mortgage File because of the payment in full
of a Mortgage Loan, the related Servicer shall send to the Trustee a certificate
of satisfaction or other similar instrument to be executed by or on behalf of
the Trustee and returned to such Servicer.

            Section 14.06 Assumption Agreements. In the event that any
assumption agreement or substitution of liability agreement is entered into with
respect to any Mortgage Loan subject to this Agreement in accordance with the
terms and provisions of the Pooling and Servicing Agreement, the Master
Servicer, to the extent provided in the related Servicing Agreement, shall cause
the related Servicer to notify the Custodian that such assumption or
substitution agreement has been completed by forwarding to the Custodian the
original of such assumption or substitution agreement, which shall be added to
the related Mortgage File and, for all purposes, shall be considered a part of
such Mortgage File to the same extent as all other documents and instruments
constituting parts thereof.

                                   ARTICLE XV
                            CONCERNING THE CUSTODIAN

            Section 15.01 Custodian a Bailee and Agent of the Trustee. With
respect to each Mortgage Note, Mortgage and other documents constituting each
Mortgage File which are delivered to the Custodian, the Custodian is exclusively
the bailee and agent of the Trustee and has no instructions to hold any Mortgage
Note or Mortgage for the benefit of any person other than the Trustee and the
Certificateholders and undertakes to perform such duties and only such duties as
are specifically set forth in this Agreement. Except upon compliance with the
provisions of Section 2.5 of this Agreement, no Mortgage Note, Mortgage or
Mortgage File shall be delivered by the Custodian to the Company, the Servicer
or the Master Servicer or otherwise released from the possession of the
Custodian.

              Section 15.02 Reserved.

            Section 15.03 Custodian May Own Certificates. The Custodian in its
individual or any other capacity may become the owner or pledgee of Certificates
with the same rights it would have if it were not Custodian.

            Section 15.04 Master Servicer to Pay Custodian's Fees and Expenses.
The Master Servicer covenants and agrees to pay to the Custodian from time to
time, and the Custodian shall be entitled to, reasonable compensation for all
services rendered by it in the exercise and performance of any of the powers and
duties hereunder of the Custodian, and the Master Servicer will pay or reimburse
the Custodian upon its request for all reasonable expenses, disbursements and
advances incurred or made by the Custodian in accordance with any of the
provisions of this Agreement (including the reasonable compensation and the
expenses and disbursements of its counsel and of all persons not regularly in
its employ), except any such expense, disbursement or advance as may arise from
its negligence or bad faith or to the extent

                                      G-5
<PAGE>

that such cost or expense is indemnified by the Company pursuant to the Pooling
and Servicing Agreement.

            Section 15.05 Custodian May Resign; Trustee May Remove Custodian.
The Custodian may resign from the obligations and duties hereby imposed upon it
as such obligations and duties relate to its acting as Custodian of the Mortgage
Loans. Upon receiving such notice of resignation, the Trustee shall either take
custody of the Mortgage Files itself and give prompt notice thereof to the
Company, the Master Servicer and the Custodian, or promptly appoint a successor
Custodian by written instrument, in duplicate, one copy of which instrument
shall be delivered to the resigning Custodian and one copy to the successor
Custodian. If the Trustee shall not have taken custody of the Mortgage Files and
no successor Custodian shall have been so appointed and have accepted
appointment within 30 days after the giving of such notice of resignation, the
resigning Custodian may petition any court of competent jurisdiction for the
appointment of a successor Custodian.

            The Trustee may remove the Custodian at any time with the consent of
the Master Servicer. In such event, the Trustee shall appoint, or petition a
court of competent jurisdiction to appoint, a successor Custodian hereunder. Any
successor Custodian shall be a depository institution subject to supervision or
examination by federal or state authority, shall be able to satisfy the other
requirements contained in Section 3.7 and shall be unaffiliated with the
Servicer or the Company.

            Any resignation or removal of the Custodian and appointment of a
successor Custodian pursuant to any of the provisions of this Section 3.5 shall
become effective upon acceptance of appointment by the successor Custodian. The
Trustee shall give prompt notice to the Company and the Master Servicer of the
appointment of any successor Custodian. No successor Custodian shall be
appointed by the Trustee without the prior approval of the Company and the
Master Servicer.

            Section 15.06 Merger or Consolidation of Custodian. Any Person into
which the Custodian may be merged or converted or with which it may be
consolidated, or any Person resulting from any merger, conversion or
consolidation to which the Custodian shall be a party, or any Person succeeding
to the business of the Custodian, shall be the successor of the Custodian
hereunder, without the execution or filing of any paper or any further act on
the part of any of the parties hereto, anything herein to the contrary
notwithstanding.

            Section 15.07 Representations of the Custodian. The Custodian hereby
represents that it is a depository institution subject to supervision or
examination by a federal or state authority, has a combined capital and surplus
of at least $15,000,000 and is qualified to do business in the jurisdictions in
which it will hold any Mortgage File.

                                  ARTICLE XVI
                            MISCELLANEOUS PROVISIONS

            Section 16.01 Notices. All notices, requests, consents, demands and
other communications required under this Agreement or pursuant to any other
instrument or document delivered hereunder shall be in writing and, unless
otherwise specifically provided, may be

                                      G-6
<PAGE>

delivered personally, by telegram or telex, or by registered or certified mail,
postage prepaid, return receipt requested, at the addresses specified on the
signature page hereof (unless changed by the particular party whose address is
stated herein by similar notice in writing), in which case the notice will be
deemed delivered when received.

            Section 16.02 Amendments. No modification or amendment of or
supplement to this Agreement shall be valid or effective unless the same is in
writing and signed by all parties hereto, and neither the Company, the Master
Servicer nor the Trustee shall enter into any amendment hereof except as
permitted by the Pooling and Servicing Agreement. The Trustee shall give prompt
notice to the Custodian of any amendment or supplement to the Pooling and
Servicing Agreement and furnish the Custodian with written copies thereof.

            Section 16.03 GOVERNING LAW. THIS AGREEMENT SHALL BE DEEMED A
CONTRACT MADE UNDER THE LAWS OF THE STATE OF NEW YORK AND SHALL BE CONSTRUED AND
ENFORCED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE OF NEW YORK.

            Section 16.04 Recordation of Agreement. To the extent permitted by
applicable law, this Agreement is subject to recordation in all appropriate
public offices for real property records in all the counties or other comparable
jurisdictions in which any or all of the properties subject to the Mortgages are
situated, and in any other appropriate public recording office or elsewhere,
such recordation to be effected by the Company and at the Trust's expense on
direction by the Trustee, but only upon direction accompanied by an Opinion of
Counsel (which shall be at the expense of the party requesting such recordation
and in no event at the expense of the Trustee) reasonably satisfactory to the
Company to the effect that the failure to effect such recordation is likely to
materially and adversely affect the interests of the Certificateholders.

            For the purpose of facilitating the recordation of this Agreement as
herein provided and for other purposes, this Agreement may be executed
simultaneously in any number of counterparts, each of which counterparts shall
be deemed to be an original, and such counterparts shall constitute but one and
the same instrument.

            Section 16.05 Severability of Provisions. If any one or more of the
covenants, agreements, provisions or terms of this Agreement shall be for any
reason whatsoever held invalid, then such covenants, agreements, provisions or
terms shall be deemed severable from the remaining covenants, agreements,
provisions or terms of this Agreement and shall in no way affect the validity or
enforceability of the other provisions of this Agreement or of the Certificates
or the rights of the holders thereof.

                                      G-7
<PAGE>

      IN WITNESS WHEREOF, this Agreement is executed as of the date first above
written.

Address:                                       HSBC BANK USA, NATIONAL
                                               ASSOCIATION, as Trustee
452 Fifth Avenue
New York, NY 10018
                                               By:______________________________
                                               Name:
                                               Title:

Address:                                       MERRILL LYNCH MORTGAGE I
                                               NVESTORS, INC.
4 World Financial Center
New York, NY 10281
                                               By:______________________________
                                               Name:
                                               Title:

Address:                                       WELLS FARGO BANK, N.A.,
                                               as Master Servicer
9062 Old Annapolis Road
Columbia, Maryland 21045-1951
                                               By:______________________________
                                               Name: Michael D. Pinzon
                                               Title:   Assistant Vice President

Address:                                       WELLS FARGO BANK, N.A.,
                                               as Custodian
1015 10th Avenue Southeast, MS 0031
Minneapolis, MN  55414
                                               By:______________________________
                                               Name:
                                               Title:

                                      G-8
<PAGE>

                     EXHIBIT ONE TO THE CUSTODIAL AGREEMENT

                     FORM OF CUSTODIAN INITIAL CERTIFICATION

                                               July __, 2006

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center, 10th Floor
New York, New York 10281

HSBC Bank USA, National Association
452 Fifth Avenue
New York, NY 10018

      Re:   Pooling and Servicing Agreement, dated as of July 1, 2006, among
            Merrill Lynch Mortgage Investors, Inc., as depositor, Wells Fargo
            Bank, N.A., as master servicer and securities administrator, and
            HSBC Bank USA, National Association, as trustee,
            Mortgage Pass-Through Certificates, Series 2006-A4

Ladies and Gentlemen:

      Attached is the Custodian's preliminary exception report delivered in
accordance with Section 2.02 of the referenced Pooling and Servicing Agreement
(the "Pooling and Servicing Agreement"). Capitalized terms used but not
otherwise defined herein shall have the meanings set forth in the Pooling and
Servicing Agreement.

      The Custodian has made no independent examination of any documents
contained in each Mortgage File beyond the review specifically required in the
Pooling and Servicing Agreement. The Custodian makes no representations as to
(i) the validity, legality, sufficiency, enforceability or genuineness of any of
the documents contained in the Mortgage File pertaining to the Mortgage Loans
identified on the Mortgage Loan Schedule, (ii) the collectability, insurability,
effectiveness or suitability of any such Mortgage Loan or (iii) the existence of
any assumption, modification, written assurance, or substitution agreement, with
respect to any Mortgage File if no such documents appear in the Mortgage File
delivered to the Custodian.

                                      WELLS FARGO BANK, N.A.,
                                      as Custodian

                                      By: ______________________________________
                                      Name:
                                      Title:

                                      G-9
<PAGE>

                     EXHIBIT TWO TO THE CUSTODIAL AGREEMENT
                      FORM OF CUSTODIAN FINAL CERTIFICATION

                                                         ____________, 200_

Merrill Lynch Mortgage Investors, Inc.
4 World Financial Center, 10th Floor
New York, New York 10281
Attention: ____________________

HSBC Bank USA, National Association
452 Fifth Avenue
New York, NY 10018

      Re:   Pooling and Servicing Agreement, dated as of July 1, 2006, among
            Merrill Lynch Mortgage Investors, Inc., as depositor, Wells Fargo
            Bank, N.A., as master servicer and securities administrator and HSBC
            Bank USA, National Association, as trustee,
            Mortgage Pass-Through Certificates, Series 2006-A4

Ladies and Gentlemen:

      In accordance with Section 2.02 of the above-captioned Pooling and
Servicing Agreement, the undersigned, hereby certifies that, except as noted on
the Schedule of Exceptions attached hereto, for each Mortgage Loan listed on the
Mortgage Loan Schedule (other than any Mortgage Loan paid in full or listed on
the attachment hereto), it has received a complete Mortgage File which includes
the documents required to be included in the Mortgage File as set forth in the
Pooling and Servicing Agreement.

      The undersigned has made no independent examination of any documents
contained in each Mortgage File beyond the review specifically required in the
above-referenced Pooling and Servicing Agreement. The undersigned makes no
representation as to: (i) the validity, legality, sufficiency, enforceability or
genuineness of any documents contained in any Mortgage File for any of the
Mortgage Loans listed on the Mortgage Loan Schedule to the Pooling and Servicing
Agreement, (ii) the collectability, insurability, effectiveness or suitability
of any such Mortgage Loan or (iii) whether any Mortgage File should include any
flood insurance policy, any rider, addends, surety or guaranty agreement, power
of attorney, buy down agreement, assumption agreement, modification agreement,
written assurance or substitution agreement.

                                      G-10
<PAGE>

      Capitalized words and phrases used herein shall have the respective
meanings assigned to them in the above-captioned Pooling and Servicing
Agreement.

                                  WELLS FARGO BANK, N.A.,
                                  as Custodian

                                  By: _________________________________________
                                  Name:

                                      G-11

<PAGE>

                    EXHIBIT THREE TO THE CUSTODIAL AGREEMENT

      FORM OF CERTIFICATION REGARDING SERVICING CRITERIA TO BE ADDRESSED IN
                         REPORT ON ASSESSMENT COMPLIANCE

     The assessment of compliance to be delivered by Wells Fargo Bank shall
       address, at a minimum, the criteria identified below as "Applicable
                              Servicing Criteria":

<TABLE>
<CAPTION>
                                                                                        APPLICABLE SERVICING
                                   SERVICING CRITERIA                                         CRITERIA
--------------------------------------------------------------------------------        --------------------
   REFERENCE                                 CRITERIA
   ---------                                 --------
<S>                  <C>                                                                <C>
                                   GENERAL SERVICING CONSIDERATIONS

1122(d)(1)(i)        Policies and procedures are instituted to monitor any
                     performance or other triggers and events of default in
                     accordance with the transaction agreements.

1122(d)(1)(ii)       If any material servicing activities are outsourced to
                     third parties, policies and procedures are instituted to
                     monitor the third party's performance and compliance with
                     such servicing activities.

1122(d)(1)(iii)      Any requirements in the transaction agreements to maintain
                     a back-up servicer for the mortgage loans are maintained.

1122(d)(1)(iv)       A fidelity bond and errors and omissions policy is in
                     effect on the party participating in the servicing function
                     throughout the reporting period in the amount of coverage
                     required by and otherwise in accordance with the terms of
                     the transaction agreements.

                                   CASH COLLECTION AND ADMINISTRATION

1122(d)(2)(i)        Payments on mortgage loans are deposited into the
                     appropriate custodial bank accounts and related bank
                     clearing accounts no more than two business days following
                     receipt, or such other number of days specified in the
                     transaction agreements.

1122(d)(2)(ii)       Disbursements made via wire transfer on behalf of an
                     obligor or to an investor are made only by authorized
                     personnel.

1122(d)(2)(iii)      Advances of funds or guarantees regarding collections, cash
                     flows or distributions, and any interest or other fees
                     charged for such advances, are made, reviewed and approved
                     as specified in the transaction agreements.

1122(d)(2)(iv)       The related accounts for the transaction, such as cash
                     reserve accounts or accounts established as a form of
                     overcollateralization, are separately maintained (e.g.,
                     with respect to commingling of cash) as set forth in the
                     transaction agreements.

1122(d)(2)(v)        Each custodial account is maintained at a federally insured
                     depository institution as set forth in the transaction
                     agreements. For purposes of this criterion, "federally
                     insured depository institution" with respect to a foreign
                     financial institution means a foreign financial institution
                     that meets the requirements of Rule 13k-1(b)(1) of the
                     Securities Exchange Act.

1122(d)(2)(vi)       Unissued checks are safeguarded so as to prevent
                     unauthorized access.

1122(d)(2)(vii)       Reconciliations are prepared on a monthly basis for all
                     asset-backed securities related bank accounts, including
                     custodial accounts and related bank clearing accounts.
                     These reconciliations are (A) mathematically accurate; (B)
                     prepared within 30 calendar days after the bank statement
                     cutoff date, or such other number of days specified in the
                     transaction agreements; (C) reviewed and approved by someone
                     other than the person who prepared the reconciliation; and
                     (D) contain explanations for reconciling items.  These
                     reconciling items are resolved within 90 calendar days of
                     their original identification, or such other number of days
                     specified in the transaction agreements.
</TABLE>

                                      G-12

<PAGE>

<TABLE>
<CAPTION>
                                                                                        APPLICABLE SERVICING
                                   SERVICING CRITERIA                                         CRITERIA
--------------------------------------------------------------------------------        --------------------
   REFERENCE                                 CRITERIA
   ---------                                 --------
<S>                  <C>                                                                <C>
                                   INVESTOR REMITTANCES AND REPORTING

1122(d)(3)(i)        Reports to investors, including those to be filed with the
                     Commission, are maintained in accordance with the
                     transaction agreements and applicable Commission
                     requirements. Specifically, such reports (A) are prepared
                     in accordance with timeframes and other terms set forth in
                     the transaction agreements; (B) provide information
                     calculated in accordance with the terms specified in the
                     transaction agreements; (C) are filed with the Commission as
                     required by its rules and regulations; and (D) agree with
                     investors' or the trustee's records as to the total unpaid
                     principal balance and number of mortgage loans serviced by
                     the Servicer.

1122(d)(3)(ii)       Amounts due to investors are allocated and remitted in
                     accordance with timeframes, distribution priority and other
                     terms set forth in the transaction agreements.

1122(d)(3)(iii)      Disbursements made to an investor are posted within two
                     business days to the Servicer's investor records, or such
                     other number of days specified in the transaction
                     agreements.

1122(d)(3)(iv)       Amounts remitted to investors per the investor reports
                     agree with cancelled checks, or other form of payment, or
                     custodial bank statements.

                                   POOL ASSET ADMINISTRATION

1122(d)(4)(i)        Collateral or security on mortgage loans is maintained as                   X
                     required by the transaction agreements or related
                     mortgage loan documents.

1122(d)(4)(ii)       Mortgage loan and related documents are safeguarded as                      X
                     required by the transaction agreements.

1122(d)(4)(iii)      Any additions, removals or substitutions to the asset pool
                     are made, reviewed and approved in accordance with any
                     conditions or requirements in the transaction agreements.

1122(d)(4)(iv)       Payments on mortgage loans, including any payoffs, made in
                     accordance with the related mortgage loan documents are
                     posted to the Servicer's obligor records maintained no more
                     than two business days after receipt, or such other number
                     of days specified in the transaction agreements, and
                     allocated to principal, interest or other items (e.g.,
                     escrow) in accordance with the related mortgage loan
                     documents.

1122(d)(4)(v)        The Servicer's records regarding the mortgage loans agree
                     with the Servicer's records with respect to an obligor's
                     unpaid principal balance.

1122(d)(4)(vi)       Changes with respect to the terms or status of an obligor's
                     mortgage loans (e.g., loan modifications or re-agings) are
                     made, reviewed and approved by authorized personnel in
                     accordance with the transaction agreements and related pool
                     asset documents.

1122(d)(4)(vii)      Loss mitigation or recovery actions (e.g., forbearance
                     plans, modifications and deeds in lieu of foreclosure,
                     foreclosures and repossessions, as applicable) are
                     initiated, conducted and concluded in accordance with the
                     timeframes or other requirements established by the
                     transaction agreements.

1122(d)(4)(viii)     Records documenting collection efforts are maintained
                     during the period a mortgage loan is delinquent in
                     accordance with the transaction agreements. Such records
                     are maintained on at least a monthly basis, or such other
                     period specified in the transaction agreements, and
                     describe the entity's activities in monitoring delinquent
                     mortgage loans including, for example, phone calls, letters
                     and payment rescheduling plans in cases where delinquency
                     is deemed temporary (e.g., illness or unemployment).

1122(d)(4)(ix)       Adjustments to interest rates or rates of return for
                     mortgage loans with variable rates are computed based on
                     the related mortgage loan documents.
</TABLE>

                                      G-13

<PAGE>

<TABLE>
<CAPTION>
                                                                                        APPLICABLE SERVICING
                                   SERVICING CRITERIA                                         CRITERIA
--------------------------------------------------------------------------------        --------------------
   REFERENCE                                 CRITERIA
   ---------                                 --------
<S>                  <C>                                                                <C>
1122(d)(4)(x)        Regarding any funds held in trust for an obligor (such as
                     escrow accounts): (A) such funds are analyzed, in
                     accordance with the obligor's mortgage loan documents, on
                     at least an annual basis, or such other period specified in
                     the transaction agreements; (B) interest on such funds is
                     paid, or credited, to obligors in accordance with
                     applicable mortgage loan documents and state laws; and (C)
                     such funds are returned to the obligor within 30 calendar
                     days of full repayment of the related mortgage loans, or
                     such other number of days specified in the transaction
                     agreements.

1122(d)(4)(xi)       Payments made on behalf of an obligor (such as tax or
                     insurance payments) are made on or before the related
                     penalty or expiration dates, as indicated on the
                     appropriate bills or notices for such payments, provided
                     that such support has been received by the servicer at
                     least 30 calendar days prior to these dates, or such other
                     number of days specified in the transaction agreements.

1122(d)(4)(xii)      Any late payment penalties in connection with any payment
                     to be made on behalf of an obligor are paid from the
                     servicer's funds and not charged to the obligor, unless the
                     late payment was due to the obligor's error or omission.

1122(d)(4)(xiii)     Disbursements made on behalf of an obligor are posted
                     within two business days to the obligor's records
                     maintained by the servicer, or such other number of days
                     specified in the transaction agreements.

1122(d)(4)(xiv)      Delinquencies, charge-offs and uncollectible accounts are
                     recognized and recorded in accordance with the transaction
                     agreements.

1122(d)(4)(xv)       Any external enhancement or other support, identified in
                     Item 1114(a)(1) through (3) or Item 1115 of Regulation AB,
                     is maintained as set forth in the transaction agreements.
</TABLE>

                                       G14

<PAGE>

                                    EXHIBIT H

                                   [RESERVED]

                                      H-1-1

<PAGE>

                                   EXHIBIT I-1
                ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT
                           NATIONAL CITY MORTGAGE CO.
                             (PROVIDED UPON REQUEST)

                                      I-1-1

<PAGE>

                                   EXHIBIT I-2
                ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT
                          COUNTRYWIDE HOME LOANS, INC.
                             (PROVIDED UPON REQUEST)

                                      I-2-1

<PAGE>

                                   EXHIBIT I-3
                ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT
                                   WELLS FARGO
                             (PROVIDED UPON REQUEST)

                                      I-3-1

<PAGE>

                                   EXHIBIT I-4
                ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT
                               CITIMORTGAGE, INC.
                             (PROVIDED UPON REQUEST)

                                      I-3-1

<PAGE>

                                   EXHIBIT I-5
                ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT
                        GREENPOINT MORTGAGE FUNDING, INC.
                             (PROVIDED UPON REQUEST)

                                      I-3-1

<PAGE>

                                   EXHIBIT I-6
                ASSIGNMENT, ASSUMPTION AND RECOGNITION AGREEMENT
                            PHH MORTGAGE CORPORATION
                             (PROVIDED UPON REQUEST)

                                      I-3-1

<PAGE>

                                    EXHIBIT J
                    form of MORTGAGE LOAN PURCHASE AGREEMENT

            MORTGAGE LOAN PURCHASE AGREEMENT, dated as of July 1, 2006, as
amended and supplemented by any and all amendments hereto (collectively, the
"Agreement"), by and between MERRILL LYNCH MORTGAGE LENDING, INC., a Delaware
corporation (the "Seller"), and MERRILL LYNCH MORTGAGE INVESTORS, INC., a
Delaware corporation (the "Purchaser").

            Upon the terms and subject to the conditions of this Agreement, the
Seller agrees to sell, and the Purchaser agrees to purchase, certain first lien,
adjustable-rate mortgage loans secured by one- to four-family residences,
townhouses, individual condominiums, co-op units and units in planned unit
developments (collectively, the "Mortgage Loans") as described herein. The
Purchaser intends to deposit the Mortgage Loans into a trust fund (the "Trust
Fund") and create Mortgage Pass-Through Certificates, MLMI Series 2006-A4 (the
"Certificates"), under a pooling and servicing agreement, to be dated as of July
1, 2006 (the "Pooling and Servicing Agreement"), by and among the Purchaser, as
depositor, HSBC Bank USA, National Association, as trustee (the "Trustee") and
Wells Fargo Bank, N.A., as master servicer and securities administrator (the
"Master Servicer" and "Securities Administrator").

            The Purchaser has filed with the Securities and Exchange Commission
(the "Commission") a registration statement on Form S-3 (Number 333-130545)
relating to its Mortgage Pass-Through Certificates and the offering of certain
series thereof (including certain classes of the Certificates) from time to time
in accordance with Rule 415 under the Securities Act of 1933, as amended, and
the rules and regulations of the Commission promulgated thereunder (the
"Securities Act"). Such registration statement, when it became effective under
the Securities Act, and the prospectus relating to the public offering of
certain classes of the Certificates by the Purchaser (the "Public Offering"), as
from time to time each is amended or supplemented pursuant to the Securities Act
or otherwise, are referred to herein as the "Registration Statement" and the
"Prospectus," respectively. The "Prospectus Supplement" shall mean that
supplement, dated July 26, 2006 to the Prospectus, dated March 31, 2006,
relating to certain classes of the Certificates. With respect to the Public
Offering of certain classes of the Certificates, the Purchaser and Merrill
Lynch, Pierce, Fenner & Smith Incorporated ("Merrill Lynch") have entered into a
terms agreement dated as of July 25, 2006 to an underwriting agreement dated
February 28, 2003, between the Purchaser and Merrill Lynch (together, the
"Underwriting Agreement").

            Now, therefore, in consideration of the premises and the mutual
agreements set forth herein, the parties hereto agree as follows:

Section 1. Definitions.

      Certain terms are defined herein. Capitalized terms used herein but not
defined herein shall have the meanings specified in the Pooling and Servicing
Agreement. The following other terms are defined as follows:

            Closing Date: July 28, 2006.

                                       J-1
<PAGE>

            Custodial Agreement: An agreement, dated as of the Closing Date
among the Depositor, the Master Servicer, the Securities Administrator, the
Trustee and the Custodian in substantially the form of Exhibit G to the Pooling
and Servicing Agreement.

            Custodian: Wells Fargo Bank, N.A., including any successors in
interest, or any successor custodian appointed pursuant to the provisions hereof
and of the Custodial Agreement.

            Cut-off Date: July 1, 2006.

            Cut-off Date Balance: $[___________].

            Deleted Mortgage Loan: A Mortgage Loan replaced or to be replaced by
a Substitute Mortgage Loan.

            Due Date: With respect to each Mortgage Loan, the first day in each
month.

            Fannie Mae: Federal National Mortgage Association or any successor
thereto.

            Freddie Mac: The Federal Home Loan Mortgage Corporation or any
successor thereto.

            Master Servicer: Wells Fargo Bank, N.A.

            Merrill Lynch: Merrill Lynch, Pierce, Fenner & Smith Incorporated.

            Moody's: Moody's Investors Service, Inc., or its successors in
interest.

            Mortgage: The mortgage or deed of trust creating a first lien on an
interest in real property securing a Mortgage Note.

            Mortgage File: The items referred to in Exhibit 1 and Exhibit 2
pertaining to a particular Mortgage Loan and any additional documents required
to be added to such documents pursuant to this Agreement.

            Mortgage Interest Rate: The annual rate of interest borne by a
Mortgage Note as stated therein.

            Mortgagor: The obligor(s) on a Mortgage Note.

            Net Rate: With respect to any Distribution Date and each Mortgage
Loan, the Mortgage Interest Rate for such Mortgage Loan on such Distribution
Date less the Servicing Fee Rate for such Mortgage Loan on such Distribution
Date.

            Offered Certificates: Shall mean the Class I-A, Class II-A, Class
III-A-1, Class III-A-2, Class IV-A-1, Class IV-A-2, Class V-A, Class X-A, Class
A-R, Class M-1, Class M-2 and Class M-3 Certificates issued pursuant to the
Pooling and Servicing Agreement.

                                      J-2
<PAGE>

            Opinion of Counsel: A written opinion of counsel, who may be counsel
for the Seller or the Purchaser, reasonably acceptable to the Trustee.

            Person: Any legal person, including any individual, corporation,
partnership, joint venture, association, joint stock company, trust,
unincorporated organization or government or any agency or political subdivision
thereof.

            Purchase Price: With respect to any Mortgage Loan required to be
purchased by the Seller pursuant to the applicable provisions of this Agreement,
an amount equal to the sum of (i) 100% of the principal remaining unpaid on such
Mortgage Loan as of the date of purchase (including if a foreclosure has already
occurred, the principal balance of the related Mortgage Loan at the time the
Mortgaged Property was acquired), (ii) accrued and unpaid interest thereon at
the Mortgage Interest Rate through and including the last day of the month of
purchase and (iii) any costs and damages incurred by the Issuing Entity in
connection with any violation by such Mortgage Loan of any predatory or
abusive-lending law.

            Rating Agencies: S&P and Moody's, each a "Rating Agency."

            S&P: Standard & Poor's, a division of The McGraw-Hill Companies,
Inc., or its successors in interest.

            Securities Act: The Securities Act of 1933, as amended.

            Security: As used herein, the term shall refer to the Trust Fund and
the Certificates created thereby.

            Substitute Mortgage Loan: A mortgage loan substituted for a Deleted
Mortgage Loan which must meet on the date of such substitution the requirements
stated herein and in the Pooling and Servicing Agreement; upon such
substitution, such mortgage loan shall be a "Mortgage Loan" hereunder.

            Value: The value of the Mortgaged Property at the time of
origination of the related Mortgage Loan, such value being the lesser of (i) the
value of such property set forth in an appraisal accepted by the Originator or
(ii) the sales price of such property at the time of origination.

Section 2. Purchase and Sale of the Mortgage Loans and Related Rights.

            (a) Upon satisfaction of the conditions set forth in Section 10
hereof, the Seller agrees to sell, and the Purchaser agrees to purchase Mortgage
Loans having an aggregate Cut-off Date Balance of $[_______________].

            (b)______The closing for the purchase and sale of the Mortgage Loans
and the closing for the issuance of the Certificates will take place on the
Closing Date at the office of the Purchaser's counsel in New York, New York or
such other place as the parties shall agree.

                                      J-3
<PAGE>

            (c)______Upon the satisfaction of the conditions set forth in
Section 10 hereof, on the Closing Date, in consideration of the purchase of the
Mortgage Loans, the Purchaser shall (i) pay to the Seller an amount equal to the
net sale proceeds of the Offered Certificates plus accrued interest in
immediately available funds by wire transfer to such account or accounts as
shall be designated by the Seller and (ii) deliver to the Seller the Class B
Certificates.

      (d) In addition to the foregoing, on the Closing Date the Seller assigns
to the Purchaser without recourse all of its right, title and interest in (1)
the Master Mortgage Loan Purchase and Servicing Agreement, dated as of November
1, 2004, by and between Merrill Lynch Bank USA ("MLBUSA") and Countrywide Home
Loans, Inc. ("CHL"), as amended, (2) the Assignment, Assumption and Recognition
Agreement, dated as of July 1, 2006, among the Seller, the Purchaser, CHL and
Countrywide Home Loans Servicing LP, (3) the Master Seller's Warranties and
Servicing Agreement, dated as of May 1, 2004, by and between MLBUSA and National
City Mortgage Co. ("NATCITY"), (4) the Assignment, Assumption and Recognition
Agreement, dated as of July 1, 2006, among the Seller, the Purchaser and
NATCITY, (5) the Mortgage Loan Flow Purchase, Sale and Servicing Agreement,
dated as of March 27, 2001, by and between Merrill Lynch Mortgage Capital, Inc.
("MLMC"), Cendant Mortgage Corporation ("PHH Mortgage Corporation" or "PHH") and
Bishop's Gate Residential Mortgage Trust, (6) the Assignment, Assumption and
Recognition Agreement, dated as of July 1, 2006, among the Seller, the Purchaser
and PHH, (7) the Seller's Warranties and Servicing Agreement (WFHM Mortgage Loan
Series 2005-W58), dated as of August 1, 2005, by and between Seller and Wells
Fargo Bank, N.A. ("Wells"), (8) the Assignment, Assumption and Recognition
Agreement, dated as of July 1, 2006, among the Seller, the Purchaser and Wells,
(9) the Master Mortgage Loan Purchase and Servicing Agreement, dated as of April
1, 2003, among Merrill Lynch Mortgage Holdings Inc., Terwin Advisors, LLC and
GreenPoint Mortgage Funding, Inc. ("Greenpoint"), as amended by Amendment No. 1,
dated as of August 20, 2003 among MLMH, Terwin and GreenPoint, and the
Bring-Down Letter related thereto, (10) the Assignment, Assumption and
Recognition Agreement, dated as of July 1, 2006, among the Seller, the Purchaser
and Greenpoint, (11) the Mortgage Servicing Purchase and Sale Agreement dated as
of May 31, 2006, between the Seller and CitiMortgage, Inc. ("CITI") and (12) the
Assignment, Assumption and Recognition Agreement, dated as of July 1, 2006,
among the Seller, the Purchaser and CITI.

Section 3. Mortgage Loan Schedules.

            The Seller agrees to provide to the Purchaser as of the date hereof
a preliminary listing of the Mortgage Loans (the "Preliminary Mortgage Loan
Schedule") setting forth the information listed on Exhibit 3 to this Agreement
with respect to each of the Mortgage Loans being sold by the Seller. If there
are changes to the Preliminary Mortgage Loan Schedule, the Seller shall provide
to the Purchaser as of the Closing Date a final schedule (the "Final Mortgage
Loan Schedule") setting forth the information listed on Exhibit 3 to this
Agreement with respect to each of the Mortgage Loans being sold by the Seller to
the Purchaser. The Final Mortgage Loan Schedule shall be delivered to the
Purchaser on the Closing Date, shall be attached to an amendment to this
Agreement to be executed on the Closing Date by the parties hereto and shall be
in form and substance mutually agreed to by the Seller and the Purchaser (the
"Amendment"). If there are no changes to the Preliminary Mortgage Loan Schedule,
the Preliminary Mortgage

                                      J-4
<PAGE>

Loan Schedule shall be the Final Mortgage Loan Schedule for all purposes hereof.

Section 4 Mortgage Loan Transfer.

            The Purchaser will be entitled to all scheduled payments of
principal and interest on the Mortgage Loans due after the Cut-off Date
(regardless of when actually collected) and all payments thereof other than
scheduled principal and interest received after the Cut-off Date. The Seller
will be entitled to all scheduled payments of principal and interest on the
Mortgage Loans due on or before the Cut-off Date (including payments collected
after the Cut-off Date) and all payments thereof other than scheduled principal
and interest on the Mortgage Loans received on or before the Cut-off Date. Such
principal amounts and any interest thereon belonging to the Seller as described
above will not be included in the aggregate outstanding principal balance of the
Mortgage Loans as of the Cut-off Date as set forth on the Final Mortgage Loan
Schedule.

            Pursuant to various conveyancing documents to be executed on the
Closing Date and pursuant to the Pooling and Servicing Agreement, the Purchaser
will assign on the Closing Date all of its right, title and interest in and to
the Mortgage Loans to the Trustee for the benefit of the Certificateholders. In
connection with the transfer and assignment of the Mortgage Loans, the Seller
has delivered or will deliver or cause to be delivered to the Trustee by the
Closing Date or such later date as is agreed to by the Purchaser and the Seller
(each of the Closing Date and such later date is referred to as a "Mortgage File
Delivery Date"), the items of each Mortgage File, provided, however, that in
lieu of the foregoing, the Seller may deliver the following documents, under the
circumstances set forth below: (x) in lieu of the original Mortgage, assignments
to the Trustee or intervening assignments thereof which have been delivered, are
being delivered or will upon receipt of recording information relating to the
Mortgage required to be included thereon, be delivered to recording offices for
recording and have not been returned in time to permit their delivery as
specified above, the Seller may deliver a true copy thereof with a certification
by the Seller or the Originator, on the face of such copy, substantially as
follows: "Certified to be a true and correct copy of the original, which has
been transmitted for recording;" (y) in lieu of the Mortgage, assignments to the
Trustee or intervening assignments thereof, if the applicable jurisdiction
retains the originals of such documents or if the originals are lost (in each
case, as evidenced by a certification from the Seller to such effect), the
Seller may deliver photocopies of such documents containing an original
certification by the judicial or other governmental authority of the
jurisdiction where such documents were recorded; and (z) in lieu of the Mortgage
Notes relating to the Mortgage Loans, each identified in the list delivered by
the Purchaser to the Trustee on the Closing Date and attached hereto as Exhibit
6 the Seller may deliver lost note affidavits and indemnities of the Seller; and
provided further, however, that in the case of Mortgage Loans which have been
prepaid in full after the Cut-off Date and prior to the Closing Date, the
Seller, in lieu of delivering the above documents, may deliver to the Trustee a
certification by the Seller to such effect. The Seller shall deliver such
original documents (including any original documents as to which certified
copies had previously been delivered) or such certified copies to the Trustee
promptly after they are received. The Seller shall cause the Mortgage and
intervening assignments, if any, and the assignment of the Mortgage to be
recorded not later than 180 days after the Closing Date, or, in lieu of such
assignments, shall provide an Opinion of Counsel pursuant to Section 6(a) hereof
to the effect

                                      J-5
<PAGE>

that the recordation of such assignment is not necessary to protect the
Trustee's interest in the related Mortgage Loan. Upon the request of the
Purchaser, the Seller will assist the Purchaser in effecting the assignment
referred to above.

            The Seller and the Purchaser acknowledge hereunder that all of the
Mortgage Loans and the related servicing will ultimately be assigned to HSBC
Bank USA, National Association, as Trustee for the Certificateholders, on the
date hereof.

Section 5. Examination of Mortgage Files.

            (a) On or before the Mortgage File Delivery Date, the Seller will
have made the Mortgage Files available to the Purchaser or its agent for
examination which may be at the offices of the Trustee or the Seller and/or the
Custodian. The fact that the Purchaser or its agent has conducted or has failed
to conduct any partial or complete examination of the Mortgage Files shall not
affect the Purchaser's rights to demand cure, repurchase, substitution or other
relief as provided in this Agreement. In furtherance of the foregoing, the
Seller shall make the Mortgage Files available to the Purchaser or its agent
from time to time so as to permit the Purchaser to confirm the Seller's
compliance with the delivery and recordation requirements of this Agreement and
the Pooling and Servicing Agreement. In addition, upon request of the Purchaser,
the Seller agrees to provide to the Purchaser, Merrill Lynch and to any
investors or prospective investors in the Certificates information regarding the
Mortgage Loans and their servicing, to make the Mortgage Files available to the
Purchaser, Merrill Lynch and to such investors or prospective investors (which
may be at the offices of the Seller and/or the Seller's custodian) and to make
available personnel knowledgeable about the Mortgage Loans for discussions with
the Purchaser, Merrill Lynch and such investors or prospective investors, upon
reasonable request during regular business hours, sufficient to permit the
Purchaser, Merrill Lynch and such investors or potential investors to conduct
such due diligence as any such party reasonably believes is appropriate.

            (b) Pursuant to the Pooling and Servicing Agreement, on the Closing
Date the Trustee (or the Custodian), for the benefit of the Certificateholders,
will review items of the Mortgage Files as set forth on Exhibit 1 and will
deliver to the Seller a certification in the form attached as Exhibit One to the
Custodial Agreement.

            (c) Pursuant to the Pooling and Servicing Agreement, the Trustee or
the Custodian, as its agent, will review the Mortgage Files within 180 days of
the Closing Date and will deliver to the Purchaser a final certification
substantially in the form of Exhibit Two to the Custodial Agreement. If the
Trustee or the Custodian, as its agent, is unable to deliver a final
certification with respect to the items listed in Exhibit 2 due to any document
that is missing, has not been executed, is unrelated, determined on the basis of
the Mortgagor name, original principal balance and loan number, to the Mortgage
Loans identified in the Final Mortgage Loan Schedule (a "Material Defect"), the
Trustee or the Custodian, as its agent, shall notify the Seller of such Material
Defect. The Seller shall correct or cure any such Material Defect within 90 days
from the date of notice from the Trustee or the Custodian, as applicable, of the
Material Defect and if the Seller does not correct or cure such Material Defect
within such period and such defect materially and adversely affects the
interests of the Certificateholders in the related Mortgage Loan, the Seller
will, in accordance with the terms of the Pooling and Servicing

                                      J-6
<PAGE>

Agreement, within 90 days of the date of notice, provide the Trustee with a
Substitute Mortgage Loan (if within two years of the Closing Date) or purchase
the related Mortgage Loan at the applicable Purchase Price; provided, however,
that if such defect relates solely to the inability of the Seller to deliver the
original security instrument or intervening assignments thereof, or a certified
copy because the originals of such documents, or a certified copy, have not been
returned by the applicable jurisdiction, the Seller shall not be required to
purchase such Mortgage Loan if the Seller delivers such original documents or
certified copy promptly upon receipt, but in no event later than 360 days after
the Closing Date. The foregoing repurchase obligation shall not apply in the
event that the Seller cannot deliver such original or copy of any document
submitted for recording to the appropriate recording office in the applicable
jurisdiction because such document has not been returned by such office;
provided that the Seller shall instead deliver a recording receipt of such
recording office or, if such receipt is not available, a certificate of the
Seller confirming that such documents have been accepted for recording, and
delivery to the Trustee or the Custodian, as its agent, shall be effected by the
Seller within thirty days of its receipt of the original recorded document.

            (d) At the time of any substitution, the Seller shall deliver or
cause to be delivered the Substitute Mortgage Loan, the related Mortgage File
and any other documents and payments required to be delivered in connection with
a substitution pursuant to the Pooling and Servicing Agreement. At the time of
any purchase or substitution, the Trustee shall (i) assign to the Seller and
release or cause the Custodian, as its agent, to release the documents
(including, but not limited to, the Mortgage, Mortgage Note and other contents
of the Mortgage File) in the possession of the Trustee or the Custodian relating
to the Deleted Mortgage Loan and (ii) execute and deliver such instruments of
transfer or assignment, in each case without recourse, as shall be necessary to
vest in the Seller title to such Deleted Mortgage Loan.

Section 6. Recordation of Assignments of Mortgage.

            (a) The Seller need not cause to be recorded any assignment which
relates to a Mortgage Loan in any jurisdiction; provided, however, each
assignment of Mortgage shall be submitted for recording by the Seller, at no
expense to the Issuing Entity or Trustee, upon the earliest to occur of (i)
reasonable direction by the Holders of Certificates evidencing, in the
aggregate, not less than 25% of the Voting Rights, (ii) the occurrence of an
Event of Default with respect to the Master Servicer (upon instruction of the
Seller), (iii) the occurrence of a bankruptcy, insolvency or foreclosure
relating to the Seller or (iv) with respect to any one assignment of Mortgage,
the occurrence of a bankruptcy, insolvency or foreclosure relating to the
Mortgagor under the related Mortgage.

            While each such Mortgage or assignment is being recorded, if
necessary, the Seller shall leave or cause to be left with the Trustee a
certified copy of such Mortgage or assignment. All customary recording fees and
reasonable expenses relating to the recordation of the assignments of Mortgage
to the Trustee shall be borne by the Seller.

            (b) It is the express intent of the parties hereto that the
conveyance of the Mortgage Loans by the Seller to the Purchaser, as contemplated
by this Agreement be, and be treated as, a sale. It is, further, not the
intention of the parties that such conveyance be deemed a

                                      J-7
<PAGE>

pledge of the Mortgage Loans by the Seller to the Purchaser to secure a debt or
other obligation of the Seller. However, in the event that, notwithstanding the
intent of the parties, the Mortgage Loans are held by a court of competent
jurisdiction to continue to be property of the Seller, then (i) this Agreement
shall also be deemed to be a security agreement within the meaning of Articles 8
and 9 of the applicable Uniform Commercial Code; (ii) the transfer of the
Mortgage Loans provided for herein shall be deemed to be a grant by the Seller
to the Purchaser of a security interest in all of the Seller's right, title and
interest in and to the Mortgage Loans and all amounts payable to the holders of
the Mortgage Loans in accordance with the terms thereof and all proceeds of the
conversion, voluntary or involuntary, of the foregoing into cash, instruments,
securities or other property, to the extent the Purchaser would otherwise be
entitled to own such Mortgage Loans and proceeds pursuant to Section 4 hereof,
including all amounts, other than investment earnings, from time to time held or
invested in any accounts created pursuant to the Pooling and Servicing
Agreement, whether in the form of cash, instruments, securities or other
property; (iii) the possession by the Purchaser or the Trustee of Mortgage Notes
and such other items of property as constitute instruments, money, negotiable
documents or chattel paper shall be deemed to be "possession by the secured
party" for purposes of perfecting the security interest pursuant to Section
9-305 (or comparable provision) of the applicable Uniform Commercial Code; and
(iv) notifications to persons holding such property, and acknowledgments,
receipts or confirmations from persons holding such property, shall be deemed
notifications to, or acknowledgments, receipts or confirmations from, financial
intermediaries, bailees or agents (as applicable) of the Purchaser for the
purpose of perfecting such security interest under applicable law. Any
assignment of the interest of the Purchaser pursuant to any provision hereof or
pursuant to the Pooling and Servicing Agreement shall also be deemed to be an
assignment of any security interest created hereby. The Seller and the Purchaser
shall, to the extent consistent with this Agreement, take such actions as may be
reasonably necessary to ensure that, if this Agreement were deemed to create a
security interest in the Mortgage Loans, such security interest would be deemed
to be a perfected security interest of first priority under applicable law and
will be maintained as such throughout the term of the Pooling and Servicing
Agreement.

Section 7. Representations and Warranties of Seller Concerning the Mortgage
Loans.

      The Seller hereby represents and warrants to the Purchaser as of the
Closing Date or such other date as may be specified below with respect to each
Mortgage Loan being sold by it:

            (a) the information set forth in the Mortgage Loan Schedule hereto
      is true and correct in all material respects;

            (b) immediately prior to the transfer to the Purchaser, the Seller
      was the sole owner of beneficial title and holder of each Mortgage and
      Mortgage Note relating to the Mortgage Loans and is conveying the same
      free and clear of any and all liens, claims, encumbrances, participation
      interests, equities, pledges, charges or security interests of any nature
      and the Seller has full right and authority to sell or assign the same
      pursuant to this Agreement;

            (c) no selection procedure reasonably believed by the Seller to be
      adverse to the interests of the Certificateholders was utilized in
      selecting the Mortgage Loans;

                                      J-8
<PAGE>

            (d) each Mortgage Loan constitutes a "qualified mortgage" under
      Section 860G(a)(3)(A) of the Code and Treasury Regulation Section
      1.860G-2(a)(1);

            (e) no Mortgage Loan is in foreclosure;

            (f) no Mortgage Loan provides for interest other than at either (i)
      a single fixed rate in effect throughout the term of the Mortgage Loan or
      (ii) a "variable rate" (within the meaning of Treas. Reg. Section
      1.860G-1(a)(3)) in effect throughout the term of the Mortgage Loan;

            (g) the Seller would not, based on the delinquency status of the
      Mortgage Loans, institute foreclosure proceedings with respect to any of
      the Mortgage Loans prior to the next scheduled payment for such Mortgage
      Loan;

            (h) the information set forth under the captions "Description of the
      Mortgage Pools -- General," " -- Tabular Characteristics of the Mortgage
      Loans" and in Annex II of the Prospectus Supplement is true and correct in
      all material respects;

            (i) as of the Cut-off Date, no Mortgage Loan is more than 30 days
      past due. The Seller has not advanced funds, or induced, solicited or
      knowingly received any advance of funds from a party other than the owner
      of the related Mortgaged Property, directly or indirectly, for the payment
      of any amount required by the Mortgage Note or Mortgage;

            (j) to the best of the Seller's knowledge, there are no delinquent
      taxes, ground rents, water charges, sewer rents, assessments, insurance
      premiums, leasehold payments, including assessments payable in future
      installments or other outstanding charges affecting the related Mortgaged
      Property;

            (k) to the best of the Seller's knowledge, there is no default,
      breach, violation or event of acceleration existing under the Mortgage or
      the Mortgage Note and no event which, with the passage of time or with
      notice and the expiration of any grace or cure period, would constitute a
      default, breach, violation or event of acceleration, and the Seller has
      not waived any default, breach, violation or event of acceleration;

            (l) to the best of the Seller's knowledge, the Mortgaged Property is
      free of damage and waste and there is no proceeding pending for the total
      or partial condemnation thereof;

            (m) to the best of the Seller's knowledge, the Mortgaged Property is
      lawfully occupied under applicable law at time of origination; all
      inspections, licenses and certificates required to be made or issued with
      respect to all occupied portions of the Mortgaged Property and, with
      respect to the use and occupancy of the same, including but not limited to
      certificates of occupancy, have been made or obtained from the appropriate
      authorities;

                                      J-9
<PAGE>

            (n) all requirements of any federal, state or local law (including
      usury, truth in lending, real estate settlement procedures, consumer
      credit protection, equal credit opportunity, disclosure or recording,
      predatory and abusive lending laws) applicable to the origination and
      servicing of such Mortgage Loan have been complied with in all material
      respects;

            (o) to the best of the Seller's knowledge, as of the date of
      transfer of the Mortgage Loans, there is no mechanics' lien or claim for
      work, labor or material affecting the Mortgaged Property except those
      which are insured against by the title insurance policy;

            (p) to the best of the Seller's knowledge, as of the date of the
      transfer of the Mortgage Loans to the Purchaser, there is no valid offset,
      defense or counterclaim to any Mortgage Note or Mortgage;

            (q) to the best of the Seller's knowledge, as of the date of
      closing, the Mortgaged Property subject to any Mortgage is free of
      material damage and is in good repair;

            (r) at the time of origination, no improvement located on or being
      part of the Mortgaged Property was in violation of any applicable zoning
      and subdivision laws or ordinances;

            (s) each Mortgage Loan is and will be a mortgage loan arising out of
      the originator's practice in accordance with the seller/originator's
      underwriting guidelines. The seller has no knowledge of any fact that
      should have led it to expect at the time of the initial creation of an
      interest in the Mortgage Loan that such Mortgage Loan would not be paid in
      full when due;

            (t) each original Mortgage has been recorded or is in the process of
      being recorded in the appropriate jurisdictions wherein such recordation
      is required to perfect the lien thereof for the benefit of the Trust Fund;

            (u) the related Mortgage File contains each of the documents and
      instruments specified;

            (v) each Mortgage Loan is being serviced according to the related
      Servicer's guidelines;

            (w) the Mortgage Note and the Mortgage have not been impaired,
      altered or modified in any material respect, except by a written
      instrument which has been recorded or is in the process of being recorded;

            (x) a lender's title policy or binder, or other assurance of title
      insurance customary in a form acceptable to Fannie Mae or Freddie Mac was
      issued at origination and each policy or binder is valid and remains in
      full force and effect;

                                      J-10
<PAGE>

            (y) none of the Mortgage Loans are secured by a leasehold interest;

            (z) There is no Mortgage Loan in the Trust Fund that was originated
      on or after October 1, 2002 and before March 7, 2003, which is secured by
      property located in the State of Georgia. There is no Mortgage Loan in the
      Trust Fund that was originated on or after March 7, 2003, which is a "high
      cost home loan" as defined under the Georgia Fair Lending Act;

            (aa) none of the Mortgage Loans is subject to the Home Ownership and
      Equity Protection Act of 1994 or is a "high cost" or "predatory" loan as
      defined by applicable local, state and federal predatory and abusive
      lending laws; and

            (bb) no Mortgage Loan is a High Cost Loan or Covered Loan, as
      applicable (as such terms are defined in Appendix E of the then current
      Standard & Poor's Glossary For File Format For LEVELS(R) Version 5.7
      Revised (attached hereto as Exhibit 7);

            (cc) There is no Mortgage Loan in the Trust Fund that was originated
      on or after January 1, 2005, which is a "high cost home loan" as defined
      under the Indiana Home Loan Practices Act (I.C. 24-9);

            (dd) With respect to each Mortgage Loan underlying the Security, no
      borrower obtained a prepaid single-premium credit-life, credit disability,
      credit unemployment or credit property insurance policy in connection with
      the origination of the mortgage loan;

            (ee) With respect to any Mortgage Loan underlying the Security that
      contains a provision permitting imposition of a penalty upon a prepayment
      prior to maturity: (a) the Mortgage Loan provides some benefit to the
      borrower (e.g., a rate or fee reduction) in exchange for accepting such
      prepayment penalty; (b) the Mortgage Loan's originator had a written
      policy of offering the borrower, or requiring third-party brokers to offer
      the borrower, the option of obtaining a mortgage loan that did not require
      payment of such a penalty; (c) the prepayment penalty was adequately
      disclosed to the borrower pursuant to applicable state and federal law;
      (d) no Mortgage Loan that is a subprime loan originated on or after
      October 1, 2002 underlying the Security will provide for prepayment
      penalties for a term in excess of three years and any Mortgage Loans
      originated prior to such date, and any non-subprime loans, will not
      provide for prepayment penalties for a term in excess of five years; in
      each case unless the Mortgage Loan was modified to reduce the prepayment
      period to no more than three years from the date of the note and the
      borrower was notified in writing of such reduction in prepayment period;
      and (e) such prepayment penalty shall not be imposed in any instance where
      the Mortgage Loan is accelerated or paid off in connection with the
      workout of a delinquent mortgage or due to the borrower's default,
      notwithstanding that the terms of the Mortgage Loan or state or federal
      law might permit the imposition of such penalty;

            (ff) The Servicer for each Mortgage Loan underlying the Security has
      fully furnished, in accordance with the Fair Credit Reporting Act and its
      implementing regulations, accurate and complete information (i.e.,
      favorable and unfavorable) on its

                                      J-11
<PAGE>

      borrower credit files to Equifax, Experian, and Trans Union Credit
      Information Company (three of the credit repositories), on a monthly
      basis;

            (gg) The Servicer for each Mortgage Loan underlying the Security
      will fully furnish, in accordance with the Fair Credit Reporting Act and
      its implementing regulations, accurate and complete information (i.e.,
      favorable and unfavorable) on its borrower credit files to Equifax,
      Experian, and Trans Union Credit Information Company (three of the credit
      repositories), on a monthly basis;

            (hh) With respect to each Mortgage Loan underlying the Security, the
      borrower was not encouraged or required to select a mortgage loan product
      offered by the related Originator which is a higher cost product designed
      for less creditworthy borrowers, taking into account such facts as,
      without limitation, the Mortgage Loan's requirements and the borrower's
      credit history, income, assets and liabilities. For a borrower who seeks
      financing through such Originator's higher-priced subprime lending
      channel, the borrower should be directed towards or offered such
      Originator's standard mortgage line if the borrower is able to qualify for
      one of the standard products;

            (ii) The methodology used in underwriting the extension of credit
      for each Mortgage Loan in the Trust Fund did not rely on the extent of the
      borrower's equity in the collateral as the principal determining factor in
      approving such extension of credit. The methodology employed objective
      criteria that related such facts as, without limitation, the borrower's
      credit history, income, assets or liabilities, to the proposed mortgage
      payment and, based on such methodology, the Originator made a reasonable
      determination that at the time of origination the borrower had the ability
      to make timely payments on the Mortgage Loan;

            (jj) No borrower under a Mortgage Loan in the Trust Fund was charged
      "points and fees" in an amount greater than (a) $1,000 or (b) 5% of the
      principal amount of such Mortgage Loan, whichever is greater. For purposes
      of this representation, "points and fees" (x) include origination,
      underwriting, broker and finder's fees and charges that the lender imposed
      as a condition of making the Mortgage Loan, whether they are paid to the
      lender or a third party; and (y) exclude bona fide discount points, fees
      paid for actual services rendered in connection with the origination of
      the mortgage (such as attorneys' fees, notaries fees and fees paid for
      property appraisals, credit reports, surveys, title examinations and
      extracts, flood and tax certifications, and home inspections); the cost of
      mortgage insurance or credit-risk price adjustments; the costs of title,
      hazard, and flood insurance policies; state and local transfer taxes or
      fees; escrow deposits for the future payment of taxes and insurance
      premiums; and other miscellaneous fees and charges that, in total, do not
      exceed 0.25 percent of the loan amount;

            (kk) With respect to any Mortgage Loan originated on or after August
      1, 2004 and underlying the Security, neither the related Mortgage nor the
      related Mortgage Note requires the borrower to submit to arbitration to
      resolve any dispute arising out of or relating in any way to the mortgage
      loan transaction;

                                      J-12
<PAGE>

            (ll) With respect to any Mortgage Loans underlying the Security that
      are on manufactured housing, upon the origination of each such Mortgage
      Loan the manufactured housing unit either: (i) will be the principal
      residence of the borrower or (ii) will be classified as real property
      under applicable state law;

            (mm) No first lien Mortgage Loan underlying the Security has an
      original principal balance that exceeds the applicable Freddie Mac loan
      limit; and

            (nn) If any of the Mortgage Loans underlying the Security are
      "seasoned" (a seasoned mortgage loan is one where the date of the Mortgage
      Note is more than 1 year before the date of issuance of the related
      Security) the Seller:

            (i) represents that it currently operates or actively participates
            in an on-going and active program or business (A) to originate
            mortgages, and/or (B) to make periodic purchases of mortgage loans
            from originators or other sellers, and/or (C) to issue and/or
            purchase securities or bonds supported by the mortgages, with a
            portion of the proceeds generated by such program or business being
            used to purchase or originate mortgages made to borrowers who are:

                        (x) low-income families (families with incomes of 80% or
                        less of area median income) living in low-income areas
                        (a census tract or block numbering area in which the
                        median income does not exceed 80 percent of the area
                        median income) and/or

                        (y) very low-income families (families with incomes of
                        60% or less of area median income); and

            (ii) agrees that Freddie Mac for a period of two (2) years following
            the date of the agreement may contact the Seller to confirm that it
            continues to operate or actively participate in the mortgage program
            or business and to obtain other nonproprietary information about the
            Seller's activities that may assist Freddie Mac in completing its
            regulatory reporting requirements. The Seller will make reasonable
            efforts to provide such information to Freddie Mac.

            It is understood and agreed that the representations and warranties
set forth in this Section 7 will inure to the benefit of the Purchaser, its
successors and assigns, notwithstanding any restrictive or qualified endorsement
on any Mortgage Note or assignment of Mortgage or the examination of any
Mortgage File. Upon any substitution for a Mortgage Loan, the representations
and warranties set forth above shall be deemed to be made by the Seller as to
any Substitute Mortgage Loan as of the date of substitution.

            Upon discovery or receipt of notice by the Seller, the Purchaser or
the Trustee of a breach of any representation or warranty of the Seller set
forth in this Section 7 which materially and adversely affects the value of the
interests of the Purchaser, the Certificateholders or the

                                      J-13
<PAGE>

Trustee in any of the Mortgage Loans delivered to the Purchaser pursuant to this
Agreement, the party discovering or receiving notice of such breach shall give
prompt written notice to the others. In the case of any such breach of a
representation or warranty set forth in this Section 7, within 90 days from the
date of discovery by the Seller, or the date the Seller is notified by the party
discovering or receiving notice of such breach (whichever occurs earlier), the
Seller will (i) cure such breach in all material respects, (ii) purchase the
affected Mortgage Loan at the applicable Purchase Price or (iii) if within two
years of the Closing Date, substitute a qualifying Substitute Mortgage Loan in
exchange for such Mortgage Loan. The obligations of the Seller to cure, purchase
or substitute a qualifying Substitute Mortgage Loan shall constitute the
Purchaser's, the Trustee's and the Certificateholder's sole and exclusive remedy
under this Agreement or otherwise respecting a breach of representations or
warranties hereunder with respect to the Mortgage Loans, except for the
obligation of the Seller to indemnify the Purchaser for such breach as set forth
in and limited by Section 14 hereof. With respect to the representations and
warranties described in the Agreement which are made to the best of the Seller's
knowledge, if it is discovered by any of the Depositor, the Seller or the
Trustee that the substance of such representation and warranty is inaccurate and
such inaccuracy materially and adversely affects the value of the related
Mortgage Loan, then notwithstanding the seller's lack of knowledge with respect
to the substance of such representation and warranty, such inaccuracy shall be
deemed a breach of the applicable representation or warranty.

            Any cause of action against the Seller or relating to or arising out
of a breach by the Seller of any representations and warranties made in this
Section 7 shall accrue as to any Mortgage Loan upon (i) discovery of such breach
by the Seller or notice thereof by the party discovering such breach and (ii)
failure by the Seller to cure such breach, purchase such Mortgage Loan or
substitute a qualifying Substitute Mortgage Loan pursuant to the terms hereof.

Section 8. Representations and Warranties Concerning the Seller.

    As of the date hereof and as of the Closing Date, the Seller represents and
warrants to the Purchaser as to itself in the capacity indicated as follows:

            (a) the Seller (i) is a corporation duly organized, validly existing
      and in good standing under the laws of the State of Delaware and (ii) is
      qualified and in good standing to do business in each jurisdiction where
      such qualification is necessary, except where the failure so to qualify
      would not reasonably be expected to have a material adverse effect on the
      Seller's business as presently conducted or on the Seller's ability to
      enter into this Agreement and to consummate the transactions contemplated
      hereby;

            (b) the Seller has full power to own its property, to carry on its
      business as presently conducted and to enter into and perform its
      obligations under this Agreement;

            (c) the execution and delivery by the Seller of this Agreement have
      been duly authorized by all necessary action on the part of the Seller;
      and neither the execution and delivery of this Agreement, nor the
      consummation of the transactions herein contemplated, nor compliance with
      the provisions hereof, will conflict with or result in a breach of, or
      constitute a default under, any of the provisions of any law, governmental

                                      J-14
<PAGE>

      rule, regulation, judgment, decree or order binding on the Seller or its
      properties or the charter or by-laws of the Seller, except those
      conflicts, breaches or defaults which would not reasonably be expected to
      have a material adverse effect on the Seller's ability to enter into this
      Agreement and to consummate the transactions contemplated hereby;

            (d) the execution, delivery and performance by the Seller of this
      Agreement and the consummation of the transactions contemplated hereby do
      not require the consent or approval of, the giving of notice to, the
      registration with, or the taking of any other action in respect of, any
      state, federal or other governmental authority or agency, except those
      consents, approvals, notices, registrations or other actions as have
      already been obtained, given or made and, in connection with the
      recordation of the Mortgages, powers of attorney or assignments of
      Mortgages not yet completed;

            (e) this Agreement has been duly executed and delivered by the
      Seller and, assuming due authorization, execution and delivery by the
      Purchaser, constitutes a valid and binding obligation of the Seller
      enforceable against it in accordance with its terms (subject to applicable
      bankruptcy and insolvency laws and other similar laws affecting the
      enforcement of the rights of creditors generally);

            (f) there are no actions, suits or proceedings pending or, to the
      knowledge of the Seller, threatened against the Seller, before or by any
      court, administrative agency, arbitrator or governmental body (i) with
      respect to any of the transactions contemplated by this Agreement or (ii)
      with respect to any other matter which in the judgment of the Seller will
      be determined adversely to the Seller and will if determined adversely to
      the Seller materially and adversely affect the Seller's ability to perform
      its obligations under this Agreement; and the Seller is not in default
      with respect to any order of any court, administrative agency, arbitrator
      or governmental body so as to materially and adversely affect the
      transactions contemplated by this Agreement; and

            (g) the Seller's Information (as defined in Section 13(a) hereof)
      does not include any untrue statement of a material fact or omit to state
      a material fact necessary in order to make the statements made, in light
      of the circumstances under which they were made, not misleading.

Section 9.Representations and Warranties Concerning the Purchaser.

            As of the date hereof and as of the Closing Date, the Purchaser
represents and warrants to the Seller as follows:

            (a) the Purchaser (i) is a corporation duly organized, validly
      existing and in good standing under the laws of the State of Delaware and
      (ii) is qualified and in good standing as a foreign corporation to do
      business in each jurisdiction where such qualification is necessary,
      except where the failure so to qualify would not reasonably be expected to
      have a material adverse effect on the Purchaser's business as presently
      conducted or on the Purchaser's ability to enter into this Agreement and
      to consummate the transactions contemplated hereby;

                                      J-15
<PAGE>

            (b) the Purchaser has full corporate power to own its property, to
      carry on its business as presently conducted and to enter into and perform
      its obligations under this Agreement;

            (c) the execution and delivery by the Purchaser of this Agreement
      have been duly authorized by all necessary corporate action on the part of
      the Purchaser; and neither the execution and delivery of this Agreement,
      nor the consummation of the transactions herein contemplated, nor
      compliance with the provisions hereof, will conflict with or result in a
      breach of, or constitute a default under, any of the provisions of any
      law, governmental rule, regulation, judgment, decree or order binding on
      the Purchaser or its properties or the articles of incorporation or
      by-laws of the Purchaser, except those conflicts, breaches or defaults
      which would not reasonably be expected to have a material adverse effect
      on the Purchaser's ability to enter into this Agreement and to consummate
      the transactions contemplated hereby;

            (d) the execution, delivery and performance by the Purchaser of this
      Agreement and the consummation of the transactions contemplated hereby do
      not require the consent or approval of, the giving of notice to, the
      registration with, or the taking of any other action in respect of, any
      state, federal or other governmental authority or agency, except those
      consents, approvals, notices, registrations or other actions as have
      already been obtained, given or made;

            (e) this Agreement has been duly executed and delivered by the
      Purchaser and, assuming due authorization, execution and delivery by the
      Seller, constitutes a valid and binding obligation of the Purchaser
      enforceable against it in accordance with its terms (subject to applicable
      bankruptcy and insolvency laws and other similar laws affecting the
      enforcement of the rights of creditors generally);

            (f) there are no actions, suits or proceedings pending or, to the
      knowledge of the Purchaser, threatened against the Purchaser, before or by
      any court, administrative agency, arbitrator or governmental body (i) with
      respect to any of the transactions contemplated by this Agreement or (ii)
      with respect to any other matter which in the judgment of the Purchaser
      will be determined adversely to the Purchaser and will if determined
      adversely to the Purchaser materially and adversely affect the Purchaser's
      ability to perform its obligations under this Agreement; and the Purchaser
      is not in default with respect to any order of any court, administrative
      agency, arbitrator or governmental body so as to materially and adversely
      affect the transactions contemplated by this Agreement; and

            (g) the Purchaser's Information (as defined in Section 13(b) hereof)
      does not include any untrue statement of a material fact or omit to state
      a material fact necessary in order to make the statements made, in light
      of the circumstances under which they were made, not misleading.

                                      J-16
<PAGE>

Section 10. Conditions to Closing.

            (a) The obligations of the Purchaser under this Agreement will be
      subject to the satisfaction, on or prior to the Closing Date, of the
      following conditions:

                  (i) Each of the obligations of the Seller required to be
performed at or prior to the Closing Date pursuant to the terms of this
Agreement shall have been duly performed and complied with in all material
respects; all of the representations and warranties of the Seller under this
Agreement shall be true and correct as of the date or dates specified in all
material respects; and no event shall have occurred which, with notice or the
passage of time, would constitute a default under this Agreement, or the Pooling
and Servicing Agreement; and the Purchaser shall have received certificates to
that effect signed by authorized officers of the Seller.

                  (ii) The Purchaser shall have received all of the following
closing documents, in such forms as are agreed upon and reasonably acceptable to
the Purchaser, duly executed by all signatories other than the Purchaser as
required pursuant to the respective terms thereof:

                        (A) If required pursuant to Section 3 hereof, the
      Amendment dated as of the Closing Date and any documents referred to
      therein;

                        (B) If required pursuant to Section 3 hereof, the Final
      Mortgage Loan Schedule containing the information set forth on Exhibit 3
      hereto, one copy to be attached to each counterpart of the Amendment;

                        (C) The Pooling and Servicing Agreement, in form and
      substance reasonably satisfactory to the Trustee and the Purchaser, and
      all documents required thereby duly executed by all signatories;

                        (D) A certificate of an officer of the Seller dated as
      of the Closing Date, in a form reasonably acceptable to the Purchaser, and
      attached thereto the resolutions of the Seller's authorizing the
      transactions contemplated by this Agreement, together with copies of the
      charter and by-laws of the Seller;

                        (E) One or more opinions of counsel from the Seller's
      counsel otherwise in form and substance reasonably satisfactory to the
      Purchaser, the Trustee and each Rating Agency;

                        (F) A letter from each of the Rating Agencies giving
      each Class of Certificates set forth on Schedule A the rating set forth on
      Schedule A; and

                        (G) Such other documents, certificates (including
      additional representations and warranties) and opinions as may be
      reasonably necessary to secure the intended ratings from each Rating
      Agency for the Certificates.

                                      J-17
<PAGE>

                  (iii) The Certificates to be sold to Merrill Lynch pursuant to
the Underwriting Agreement shall have been issued and sold to Merrill Lynch.

                  (iv) The Seller shall have furnished to the Purchaser such
other certificates of its officers or others and such other documents and
opinions of counsel to evidence fulfillment of the conditions set forth in this
Agreement and the transactions contemplated hereby as the Purchaser and its
counsel may reasonably request.

            (b) The obligations of the Seller under this Agreement shall be
      subject to the satisfaction, on or prior to the Closing Date, of the
      following conditions:

                  (i) The obligations of the Purchaser required to be performed
by it on or prior to the Closing Date pursuant to the terms of this Agreement
shall have been duly performed and complied with in all material respects, and
all of the representations and warranties of the Purchaser under this Agreement
shall be true and correct in all material respects as of the date hereof and as
of the Closing Date, and no event shall have occurred which would constitute a
breach by it of the terms of this Agreement, and the Seller shall have received
a certificate to that effect signed by an authorized officer of the Purchaser.

                  (ii) The Seller shall have received copies of all of the
following closing documents, in such forms as are agreed upon and reasonably
acceptable to the Seller, duly executed by all signatories other than the Seller
as required pursuant to the respective terms thereof:

                        (A) If required pursuant to Section 3 hereof, the
      Amendment dated as of the Closing Date and any documents referred to
      therein;

                        (B) The Pooling and Servicing Agreement, in form and
      substance reasonably satisfactory to the Seller, and all documents
      required thereby duly executed by all signatories;

                        (C) A certificate of an officer of the Purchaser dated
      as of the Closing Date, in a form reasonably acceptable to the Seller, and
      attached thereto the resolutions of the Purchaser authorizing the
      transactions contemplated by this Agreement and the Pooling and Servicing
      Agreement, together with copies of the Purchaser's articles of
      incorporation, and evidence as to the good standing of the Purchaser dated
      as of a recent date;

                        (D) One or more opinions of counsel from the Purchaser's
      counsel in form and substance reasonably satisfactory to the Seller; and

                        (E) Such other documents, certificates (including
      additional representations and warranties) and opinions as may be
      reasonably necessary to secure the intended rating from each Rating Agency
      for the Certificates;

                                      J-18
<PAGE>

Section 11. Fees and Expenses.

            Subject to Section 17 hereof, the Seller shall pay on the Closing
Date or such later date as may be agreed to by the Purchaser (i) the fees and
expenses of the Seller's attorneys and the reasonable fees and expenses of the
Purchaser's attorneys, (ii) the fees and expenses of Deloitte & Touche LLP,
(iii) the filing fee charged by the Commission for the registration of the
Certificates, (iv) the fees and expenses including counsel's fees and expenses
in connection with any "blue sky" and legal investment matters, (v) the fees and
expenses of the Trustee which shall include without limitation the fees and
expenses of the Trustee (and the fees and disbursements of its counsel) with
respect to (A) legal and document review of this Agreement, the Pooling and
Servicing Agreement, the Certificates and related agreements, (B) attendance at
the Closing and (C) review of the Mortgage Loans to be performed by the Trustee,
(vi) the expenses for printing or otherwise reproducing the Certificates, the
Prospectus and the Prospectus Supplement, (vii) the fees and expenses of each
Rating Agency (both initial and ongoing), (viii) the fees and expenses relating
to the preparation and recordation of mortgage assignments (including
intervening assignments, if any and if available, to evidence a complete chain
of title from the originator to the Trustee) from the Seller to the Trustee or
the expenses relating to the Opinion of Counsel referred to in Section 6(a)
hereof, as the case may be, and (ix) Mortgage File due diligence expenses and
other out-of-pocket expenses incurred by the Purchaser in connection with the
purchase of the Mortgage Loans and by Merrill Lynch in connection with the sale
of the Offered Certificates. The Seller additionally agrees to pay directly to
any third party on a timely basis the fees provided for above which are charged
by such third party and which are billed periodically.

Section 12. Accountants' Letters

            Deloitte & Touche LLP will review the characteristics of a sample of
the Mortgage Loans described in the Final Mortgage Loan Schedule and will
compare those characteristics to the description of the Mortgage Loans contained
in the Prospectus Supplement under the captions "Summary -- The Mortgage Loans",
"Description of the Mortgage Pools -- General", " -- Tabular Characteristics of
the Mortgage Loans" and "Annex II -- The Mortgage Pool". The Seller will
cooperate with the Purchaser in making available all information and taking all
steps reasonably necessary to permit such accountants to complete the review and
to deliver the letters required of them under the Underwriting Agreement.
Deloitte & Touche LLP will also confirm certain calculations as set forth under
the caption "Yield, Prepayment and Weighted Average Life" in the Prospectus
Supplement.

Section 13. Indemnification.

      (a) The Seller shall indemnify and hold harmless the Purchaser and its
directors, officers and controlling persons (as defined in Section 15 of the
Securities Act) from and against any loss, claim, damage or liability or action
in respect thereof, to which they or any of them may become subject, under the
Securities Act or otherwise, insofar as such loss, claim, damage, liability or
action arises out of, or is based upon (i) any untrue statement of a material
fact contained in the Seller's Information as identified in Exhibit 4, the
omission to state in the Prospectus Supplement or Prospectus (or any amendment

                                      J-19
<PAGE>

      thereof or supplement thereto approved by the Seller and in which
      additional Seller's Information is identified), in reliance upon and in
      conformity with Seller's Information a material fact required to be stated
      therein or necessary to make the statements therein in light of the
      circumstances in which they were made, not misleading, (ii) any
      representation or warranty assigned or made by the Seller in Section 7 or
      Section 8 hereof being, or alleged to be, untrue or incorrect, or (iii)
      any failure by the Seller to perform its obligations under this Agreement;
      and the Seller shall reimburse the Purchaser and each other indemnified
      party for any legal and other expenses reasonably incurred by them in
      connection with investigating or defending or preparing to defend against
      any such loss, claim, damage, liability or action.

            (b) The Seller shall indemnify and hold harmless the Purchaser, the
      Trust Fund and the Trustee against any documented out-of-pocket losses,
      penalties, fines, forfeitures, reasonable and necessary legal fees and
      related costs, judgments, and other costs and expenses resulting from any
      claim, demand, defense or assertion by any third party that results from,
      a material breach of the representations and warranties set forth in
      Section 7 of this Agreement; provided, however, indemnification shall not
      be available for any economic losses of the Purchaser due to reinvestment
      losses, loss of investment income or any other special, indirect or
      consequential losses. The Seller shall indemnify and hold harmless the
      Purchaser, the Trust Fund and the Trustee against any losses, penalties,
      fines, forfeitures, reasonable and necessary legal fees and related costs,
      judgments, and other costs and expenses resulting from any claim, demand,
      defense or assertion by any third party in connection with the Georgia
      Fair Lending Act; provided, however, indemnification shall not be
      available for any economic losses of the Purchaser due to reinvestment
      losses, loss of investment income or any other special, indirect or
      consequential losses.

      The foregoing indemnity agreement is in addition to any liability which
the Seller otherwise may have to the Purchaser or any other such indemnified
party.

            (c) The Purchaser shall indemnify and hold harmless the Seller and
      its respective directors, officers and controlling persons (as defined in
      Section 15 of the Securities Act) from and against any loss, claim, damage
      or liability or action in respect thereof, to which they or any of them
      may become subject, under the Securities Act or otherwise, insofar as such
      loss, claim, damage, liability or action arises out of, or is based upon
      (i) any untrue statement of a material fact contained in the Purchaser's
      Information as identified in Exhibit 5, the omission to state in the
      Prospectus Supplement or Prospectus (or any amendment thereof or
      supplement thereto approved by the Purchaser and in which additional
      Purchaser's Information is identified), in reliance upon and in conformity
      with the Purchaser's Information, a material fact required to be stated
      therein or necessary to make the statements therein in light of the
      circumstances in which they were made, not misleading, (ii) any
      representation or warranty made by the Purchaser in Section 9 hereof
      being, or alleged to be, untrue or incorrect, or (iii) any failure by the
      Purchaser to perform its obligations under this Agreement; and the
      Purchaser shall reimburse the Seller, and each other indemnified party for
      any legal and other expenses

                                      J-20
<PAGE>

      reasonably incurred by them in connection with investigating or defending
      or preparing to defend any such loss, claim, damage, liability or action.
      The foregoing indemnity agreement is in addition to any liability which
      the Purchaser otherwise may have to the Seller, or any other such
      indemnified party,

            (d) Promptly after receipt by an indemnified party under subsection
      (a) or (b) above of notice of the commencement of any action, such
      indemnified party shall, if a claim in respect thereof is to be made
      against the indemnifying party under such subsection, notify each party
      against whom indemnification is to be sought in writing of the
      commencement thereof (but the failure so to notify an indemnifying party
      shall not relieve it from any liability which it may have under this
      Section 13 except to the extent that it has been prejudiced in any
      material respect by such failure or from any liability which it may have
      otherwise). In case any such action is brought against any indemnified
      party, and it notifies an indemnifying party of the commencement thereof,
      the indemnifying party will be entitled to participate therein and, to the
      extent it may elect by written notice delivered to the indemnified party
      promptly (but, in any event, within 30 days) after receiving the aforesaid
      notice from such indemnified party, to assume the defense thereof with
      counsel reasonably satisfactory to such indemnified party. Notwithstanding
      the foregoing, the indemnified party or parties shall have the right to
      employ its or their own counsel in any such case, but the fees and
      expenses of such counsel shall be at the expense of such indemnified party
      or parties unless (i) the employment of such counsel shall have been
      authorized in writing by one of the indemnifying parties in connection
      with the defense of such action, (ii) the indemnifying parties shall not
      have employed counsel to have charge of the defense of such action within
      a reasonable time after notice of commencement of the action, or (iii)
      such indemnified party or parties shall have reasonably concluded that
      there is a conflict of interest between itself or themselves and the
      indemnifying party in the conduct of the defense of any claim or that the
      interests of the indemnified party or parties are not substantially
      co-extensive with those of the indemnifying party (in which case the
      indemnifying parties shall not have the right to direct the defense of
      such action on behalf of the indemnified party or parties), in any of
      which events such fees and expenses shall be borne by the indemnifying
      parties (provided, however, that the indemnifying party shall be liable
      only for the fees and expenses of one counsel in addition to one local
      counsel in the jurisdiction involved. Anything in this subsection to the
      contrary notwithstanding, an indemnifying party shall not be liable for
      any settlement or any claim or action effected without its written
      consent; provided, however, that such consent was not unreasonably
      withheld.

            (e) If the indemnification provided for in paragraphs (a) and (b) of
      this Section 13 shall for any reason be unavailable to an indemnified
      party in respect of any loss, claim, damage or liability, or any action in
      respect thereof, referred to in Section 13, then the indemnifying party
      shall in lieu of indemnifying the indemnified party contribute to the
      amount paid or payable by such indemnified party as a result of such loss,
      claim, damage or liability, or action in respect thereof, in such
      proportion as shall be appropriate to reflect the relative benefits
      received by the Seller on the one hand and the Purchaser on

                                      J-21
<PAGE>

      the other from the purchase and sale of the Mortgage Loans, the offering
      of the Certificates and the other transactions contemplated hereunder. No
      person found liable for a fraudulent misrepresentation shall be entitled
      to contribution from any person who is not also found liable for such
      fraudulent misrepresentation.

            (f) The parties hereto agree that reliance by an indemnified party
      on any publicly available information or any information or directions
      furnished by an indemnifying party shall not constitute negligence, bad
      faith or willful misconduct by such indemnified party.

Section 14. Notices.

            All demands, notices and communications hereunder shall be in
writing but may be delivered by facsimile transmission subsequently confirmed in
writing. Notices to the Seller shall be directed to Merrill Lynch Mortgage
Lending Inc., 4 World Financial Center, New York, New York 10281 (Telecopy:
212-449-6710), and notices to the Purchaser shall be directed to Merrill Lynch
Mortgage Investors, Inc., 4 World Financial Center, New York, New York 10281
(Telecopy: 212-449-6710), Attention: Brian Brennan; or to any other address as
may hereafter be furnished by one party to the other party by like notice. Any
such demand, notice or communication hereunder shall be deemed to have been
received on the date received at the premises of the addressee (as evidenced, in
the case of registered or certified mail, by the date noted on the return
receipt) provided that it is received on a business day during normal business
hours and, if received after normal business hours, then it shall be deemed to
be received on the next business day.

Section 15. Transfer of Mortgage Loans.

            The Purchaser retains the right to assign the Mortgage Loans and any
or all of its interest under this Agreement to the Trustee without the consent
of the Seller, and, upon such assignment, the Trustee shall succeed to the
applicable rights and obligations of the Purchaser hereunder; provided, however,
the Purchaser shall remain entitled to the benefits set forth in Sections 11, 13
and 17 hereto and as provided in Section 2(a). Notwithstanding the foregoing,
the sole and exclusive right and remedy of the Trustee with respect to a breach
of representation or warranty of the Seller shall be the purchase or
substitution obligations of the Seller contained in Sections 5 and 7 hereof.

Section 16. Termination.

            This Agreement may be terminated (a) by the mutual consent of the
parties hereto prior to the Closing Date, (b) by the Purchaser, if the
conditions to the Purchaser's obligation to close set forth under Section 10(a)
hereof are not fulfilled as and when required to be fulfilled or (c) by the
Seller, if the conditions to the Seller's obligation to close set forth under
Section 10(b) hereof are not fulfilled as and when required to be fulfilled. In
the event of termination pursuant to clause (b), the Seller shall pay, and in
the event of termination pursuant to clause (c), the Purchaser shall pay, all
reasonable out-of-pocket expenses incurred by the other in connection with the
transactions contemplated by this Agreement. In the event of a termination
pursuant to

                                      J-22
<PAGE>

clause (a), each party shall be responsible for its own expenses.

Section 17. Representations, Warranties and Agreements to Survive Delivery.

            All representations, warranties and agreements contained in this
Agreement, or contained in certificates of officers of the Seller submitted
pursuant hereto, shall remain operative and in full force and effect and shall
survive delivery of the Mortgage Loans to the Purchaser (and by the Purchaser to
the Trustee). Subsequent to the delivery of the Mortgage Loans to the Purchaser,
the Seller's representations and warranties contained herein with respect to the
Mortgage Loans shall be deemed to relate to the Mortgage Loans actually
delivered to the Purchaser and included in the Final Mortgage Loan Schedule and
any Substitute Mortgage Loan and not to those Mortgage Loans deleted from the
Preliminary Mortgage Loan Schedule pursuant to Section 3 hereof prior to the
Closing.

Section 18. Mandatory Delivery; Grant of Security Interest.

            The sale and delivery on the Closing Date of the Mortgage Loans
described on the Mortgage Loan Schedule in accordance with the terms and
conditions of this Agreement is mandatory. It is specifically understood and
agreed that each Mortgage Loan is unique and identifiable on the date hereof and
that an award of money damages would be insufficient to compensate the Purchaser
for the losses and damages incurred by the Purchaser in the event of the
Seller's failure to deliver the Mortgage Loans on or before the Closing Date.
The Seller hereby grants to the Purchaser a lien on and a continuing security
interest in the Seller's interest in each Mortgage Loan and each document and
instrument evidencing each such Mortgage Loan to secure the performance by the
Seller of its obligation hereunder, and the Seller agrees that it holds such
Mortgage Loans in custody for the Purchaser, subject to the Purchaser's
obligation to deliver or cause to be delivered the consideration for the
Mortgage Loans pursuant to Section 2 hereof. The Seller agrees that, upon
acceptance of the Mortgage Loans by the Purchaser or its designee and delivery
of payment to the Seller, that its security interest in the Mortgage Loans shall
be released. All rights and remedies of the Purchaser under this Agreement are
distinct from, and cumulative with, any other rights or remedies under this
Agreement or afforded by law or equity and all such rights and remedies may be
exercised concurrently, independently or successively.

            Notwithstanding the foregoing, if on the Closing Date, each of the
conditions set forth in Section 10 hereof shall have been satisfied and the
Purchaser shall not have paid or caused to be paid the purchase price as
described in Section 2(c) hereof, or any such condition shall not have been
waived or satisfied and the Purchaser determines not to pay or cause to be paid
the purchase price, the Purchaser shall immediately effect the redelivery of the
Mortgage Loans, if delivery to the Purchaser has occurred and the security
interest created by this Section 18 shall be deemed to have been released.

Section 19. Severability.

            Any part, provision, representation or warranty of this Agreement
which is prohibited or which is held to be void or unenforceable shall be
ineffective to the extent of such

                                      J-23
<PAGE>

prohibition or unenforceability without invalidating the remaining provisions
hereof. Any part, provision, representation or warranty of this Agreement which
is prohibited or unenforceable or is held to be void or unenforceable in any
jurisdiction shall, as to such jurisdiction, be ineffective to the extent of
such prohibition or unenforceability without invalidating the remaining
provisions hereof, and any such prohibition or unenforceability in any
jurisdiction as to any Mortgage Loan shall not invalidate or render
unenforceable such provision in any other jurisdiction. To the extent permitted
by applicable law, the parties hereto waive any provision of law which prohibits
or renders void or unenforceable any provision hereof.

Section 20. Counterparts.

            This Agreement may be executed in counterparts, each of which will
be an original, but which together shall constitute one and the same agreement.

Section 21. Amendment.

            This Agreement cannot be amended or modified in any manner without
the prior written consent of each party.

Section 22. GOVERNING LAW.

            THIS AGREEMENT SHALL BE DEEMED TO HAVE BEEN MADE AND PERFORMED IN
THE STATE OF NEW YORK AND SHALL BE INTERPRETED IN ACCORDANCE WITH THE LAWS OF
SUCH STATE, WITHOUT REGARD TO CONFLICT OF LAWS PRINCIPLES OF SUCH STATE.

Section 23. Further Assurances.

            Each of the parties agrees to execute and deliver such instruments
and take such actions as another party may, from time to time, reasonably
request in order to effectuate the purpose and to carry out the terms of this
Agreement including any amendments hereto which may be required by either Rating
Agency.

Section 24. Successors and Assigns.

      This Agreement shall bind and inure to the benefit of and be enforceable
by the Seller and the Purchaser and their permitted successors and assigns and,
to the extent specified in Section 13 hereof, Merrill Lynch, and their
directors, officers and controlling persons (within the meaning of federal
securities laws). The Seller acknowledges and agrees that the Purchaser may
assign its rights under this Agreement (including, without limitation, with
respect to the Seller's representations and warranties respecting the Mortgage
Loans) to the Trustee. Any person into which the Seller may be merged or
consolidated (or any person resulting from any merger or consolidation involving
the Seller), any person resulting from a change in form of the Seller or any
person succeeding to the business of the Seller, shall be considered the
"successor" of the Seller hereunder and shall be considered a party hereto
without the execution or filing of any paper or any further act or consent on
the part of any party hereto. Except as provided in the two

                                      J-24
<PAGE>

preceding sentences, this Agreement cannot be assigned, pledged or hypothecated
by either party hereto without the written consent of the other parties to this
Agreement and any such assignment or purported assignment shall be deemed null
and void.

Section 25. The Seller.

            The Seller will keep in full effect all rights as are necessary to
perform their respective obligations under this Agreement.

Section 26. Entire Agreement.

            This Agreement contains the entire agreement and understanding
between the parties with respect to the subject matter hereof, and supersedes
all prior and contemporaneous agreements, understandings, inducements and
conditions, express or implied, oral or written, of any nature whatsoever with
respect to the subject matter hereof.

Section 27. No Partnership.

            Nothing herein contained shall be deemed or construed to create a
partnership or joint venture between the parties hereto.

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

                                      J-25
<PAGE>

      IN WITNESS WHEREOF, the parties hereto have caused their names to be
signed hereto by their respective duly authorized officers as of the date first
above written.

                                      MERRILL LYNCH MORTGAGE LENDING, INC.

                                      By: ____________________________________
                                      Name:  Brian Brennan
                                      Title: Authorized Signatory

                                      MERRILL LYNCH MORTGAGE
                                      INVESTORS, INC.

                                      By: ____________________________________
                                      Name:
                                      Title:

                                      J-26
<PAGE>

                  EXHIBIT 1 TO MORTGAGE LOAN PURCHASE AGREEMENT

                            CONTENTS OF MORTGAGE FILE

      With respect to each Mortgage Loan, the Mortgage File shall include each
of the following items, which shall be available for inspection by the Purchaser
or its designee, and which shall be delivered to the Purchaser or its designee
pursuant to the terms of the Agreement.

A.    With respect to each Mortgage Loan (other than a Cooperative Loan):

            (i) the original Mortgage Note, endorsed in the following form: "Pay
      to the order of HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4, without recourse," with all
      prior and intervening endorsements showing a complete chain of endorsement
      from the originator to the Person so endorsing to the Trustee;

            (ii) the original recorded Mortgage or a copy of the Mortgage
      certified by the public recording office in which such Mortgage has been
      recorded;

            (iii) an original Assignment of the Mortgage executed in the
      following form: "HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4.

            (iv) the original recorded Assignment or Assignments of the Mortgage
      showing a complete chain of assignment from the originator to the Person
      assigning the Mortgage to the Trustee as contemplated by the immediately
      preceding clause (iii), if applicable and only to the extent available to
      the Depositor with evidence of recording thereon;

            (v) the originals of all assumption, modification, consolidation or
      extension agreements, with evidence of recording thereon, if any;

            (vi) the original of any guarantee executed in connection with the
      Mortgage Note;

            (vii) the original mortgagee title insurance policy;

            (viii) the original of any security agreement, chattel mortgage or
      equivalent document executed in connection with the Mortgage; and

            (ix) the original power of attorney, if applicable.

B.    With respect to each Mortgage Loan that is a Cooperative Loan:

            (i) the original Mortgage Note, endorsed in the following form: "Pay
      to the order of HSBC Bank USA, National Association, as Trustee for the
      registered holders of the

                                      J-27
<PAGE>

      Merrill Lynch Mortgage Investors, Inc., Mortgage Pass-Through
      Certificates, Series 2006-A4, without recourse," with all prior and
      intervening endorsements showing a complete chain of endorsement from the
      originator to the Person so endorsing to the Trustee;

            (ii) the original duly executed assignment of Security Agreement to
      the Trustee;

            (iii) the acknowledgment copy of the original executed Form UCC-1
      (or certified copy thereof) with respect to the Security Agreement, and
      any required continuation statements;

            (iv) the acknowledgment copy of the original executed Form UCC-3
      with respect to the Security Agreement, indicating the Trustee as the
      assignee of the secured party;

            (v) the stock certificate representing the Cooperative Assets
      allocated to the cooperative unit, with a stock power in blank attached;

            (vi) the original collateral assignment of the proprietary lease by
      Mortgagor to the originator;

            (vii) a copy of the recognition agreement;

            (viii) if applicable and to the extent available, the original
      intervening assignments, including warehousing assignments, if any,
      showing, to the extent available, an unbroken chain of the related
      Mortgage Loan to the Trustee, together with a copy of the related Form
      UCC-3 with evidence of filing thereon; and

            (ix) the originals of each assumption, modification or substitution
      agreement, if any, relating to the Mortgage Loan.

                                      J-28
<PAGE>

                  EXHIBIT 2 TO MORTGAGE LOAN PURCHASE AGREEMENT

                         CONTENTS OF FINAL MORTGAGE FILE

            With respect to each Mortgage Loan, the Mortgage File shall include
      each of the following items, which shall be available for inspection by
      the Purchaser or its agent, and which shall be delivered to the Purchaser
      pursuant to the terms of the Agreement.

A.    With respect to each Mortgage Loan (other than a Cooperative Loan):

            (i) the original Mortgage Note, endorsed in the following form: "Pay
      to the order of HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4, without recourse," with all
      prior and intervening endorsements showing a complete chain of endorsement
      from the originator to the Person so endorsing to the Trustee;

            (ii) the original recorded Mortgage or a copy of the Mortgage
      certified by the public recording office in which such Mortgage has been
      recorded;

            (iii) an original Assignment of the Mortgage executed in the
      following form: "HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4.

            (iv) the original recorded Assignment or Assignments of the Mortgage
      showing a complete chain of assignment from the originator to the Person
      assigning the Mortgage to the Trustee as contemplated by the immediately
      preceding clause (iii), if applicable and only to the extent available to
      the Depositor with evidence of recording thereon;

            (v) the originals of all assumption, modification, consolidation or
      extension agreements, with evidence of recording thereon, if any;

            (vi) the original of any guarantee executed in connection with the
      Mortgage Note;

            (vii) the original mortgagee title insurance policy;

            (viii) the original of any security agreement, chattel mortgage or
      equivalent document executed in connection with the Mortgage; and

            (ix) the original power of attorney, if applicable.

B.    With respect to each Mortgage Loan that is a Cooperative Loan:

            (i) the original Mortgage Note, endorsed in the following form: "Pay
      to the

                                      J-29
<PAGE>

      order of HSBC Bank USA, National Association, as Trustee for the
      registered holders of the Merrill Lynch Mortgage Investors, Inc., Mortgage
      Pass-Through Certificates, Series 2006-A4, without recourse," with all
      prior and intervening endorsements showing a complete chain of endorsement
      from the originator to the Person so endorsing to the Trustee;

            (ii) the original duly executed assignment of Security Agreement to
      the Trustee;

            (iii) the acknowledgment copy of the original executed Form UCC-1
      (or certified copy thereof) with respect to the Security Agreement, and
      any required continuation statements;

            (iv) the acknowledgment copy of the original executed Form UCC-3
      with respect to the Security Agreement, indicating the Trustee as the
      assignee of the secured party;

            (v) the stock certificate representing the Cooperative Assets
      allocated to the cooperative unit, with a stock power in blank attached;

            (vi) the original collateral assignment of the proprietary lease by
      Mortgagor to the originator;

            (vii) a copy of the recognition agreement;

            (viii) if applicable and to the extent available, the original
      intervening assignments, including warehousing assignments, if any,
      showing, to the extent available, an unbroken chain of the related
      Mortgage Loan to the Trustee, together with a copy of the related Form
      UCC-3 with evidence of filing thereon; and

            (ix) the originals of each assumption, modification or substitution
      agreement, if any, relating to the Mortgage Loan.

                                      J-30
<PAGE>

                  EXHIBIT 3 TO MORTGAGE LOAN PURCHASE AGREEMENT

                       MORTGAGE LOAN SCHEDULE INFORMATION

      The Preliminary and Final Mortgage Loan Schedules shall set forth the
following information with respect to each Mortgage Loan:

            1)    the loan number of the mortgage loan;

            2)    the city, state and zip code of the Mortgage Property;

            3)    a code indicating whether the Mortgaged Property is
                  owner-occupied;

            4)    the type of Residential Dwelling constituting the Mortgaged
                  Property;

            5)    the original months to maturity;

            6)    the original date of the mortgage;

            7)    the Loan-to-Value Ratio at origination;

            8)    the Mortgage Rate;

            9)    the date on which the first Monthly Payment was due on the
                  Mortgage Loan;

            10)   the stated maturity date;

            11)   the amount of the Monthly Payment at origination;

            12)   the amount of the Monthly Payment as of the Cut-off Date;

            13)   the last Due Date on which a Monthly Payment was actually
                  applied to the unpaid Stated Principal Balance;

            14)   the original principal amount of the Mortgage Loan;

            15)   the Stated Principal Balance of the Mortgage Loan as of the
                  close of business on the Cut-off Date;

            16)   a code indicating the purpose of the Mortgage Loan (i.e.,
                  purchase financing, Rate/Term Refinancing, Cash-Out
                  Refinancing);

            17)   a code indicating the documentation style (i.e., full,
                  alternative or reduced);

            18)   the Value of the Mortgaged Property;

                                      J-31
<PAGE>

            19)   the sale price of the Mortgaged Property, if applicable;

            20)   the actual unpaid principal balance of the Mortgage Loan as of
                  the Cut-off Date;

            21)   the Servicing Fee;

            22)   with respect to each adjustable-rate Mortgage Loan, the next
                  Interest Rate Adjustment Date;

            23)   with respect to each adjustable-rate Mortgage Loan, the Gross
                  Margin;

            24)   with respect to each adjustable-rate Mortgage Loan, the
                  Minimum and Maximum Mortgage Rate under the terms of the
                  Mortgage Note;

            25)   with respect to each adjustable-rate Mortgage Loan, the First
                  Rate Cap;

            26)   with respect to each adjustable-rate Mortgage Loan, the
                  related Periodic Rate Cap;

            27)   with respect to each adjustable-rate Mortgage Loan, whether
                  additional collateral exists;

            28)   with respect to each adjustable-rate Mortgage Loan, whether it
                  is interest-only; and

            29)   with respect to each adjustable-rate Mortgage Loan, the
                  Seller.

         Such schedule shall set forth the following information with respect to
the Mortgage Loans in the aggregate as of the Cut-off Date: (1) the number of
Mortgage Loans; (2) the current principal balance of the Mortgage Loans; (3) the
weighted average Mortgage Rate of the Mortgage Loans; and (4) the weighted
average maturity of the Mortgage Loans.

                                      J-32
<PAGE>

                  EXHIBIT 4 TO MORTGAGE LOAN PURCHASE AGREEMENT

                              SELLER'S INFORMATION

            All information in the Prospectus Supplement described under the
following Sections: "Summary -- The Mortgage Loans," "Description of the
Mortgage Pools" and "Annex II -- The Mortgage Pool".

                                      J-33
<PAGE>

                  EXHIBIT 5 TO MORTGAGE LOAN PURCHASE AGREEMENT

                             PURCHASER'S INFORMATION

            All information in the Prospectus Supplement and the Prospectus,
except the Seller's Information.

                                      J-34
<PAGE>

                  EXHIBIT 6 TO MORTGAGE LOAN PURCHASE AGREEMENT

                             SCHEDULE OF LOST NOTES

                             Available Upon Request

                                      J-35
<PAGE>

                  EXHIBIT 7 TO MORTGAGE LOAN PURCHASE AGREEMENT

                                                          REVISED April 18, 2006

APPENDIX E - Standard & Poor's Predatory Lending Categories

Standard & Poor's has categorized loans governed by anti-predatory lending laws
in the Jurisdictions listed below into three categories based upon a combination
of factors that include (a) the risk exposure associated with the assignee
liability and (b) the tests and thresholds set forth in those laws. Note that
certain loans classified by the relevant statute as Covered are included in
Standard & Poor's High Cost Loan Category because they included thresholds and
tests that are typical of what is generally considered High Cost by the
industry.

STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION

<TABLE>
<CAPTION>
                                                                                         Category under
                                            Name of Anti-Predatory Lending              Applicable Anti-
       State/Jurisdiction                         Law/Effective Date                  Predatory Lending Law
--------------------------------   ------------------------------------------------  -----------------------
<S>                                <C>                                               <C>
Arkansas                           Arkansas Home Loan Protection Act, Ark. Code      High Cost Home Loan
                                   Ann. Sections 23-53-101 et seq.

                                   Effective July 16, 2003

Cleveland Heights, OH              Ordinance No. 72-2003 (PSH), Mun. Code Sections   Covered Loan
                                   757.01 et seq.

                                   Effective June 2, 2003

Colorado                           Consumer Equity Protection, Colo. Stat. Ann.      Covered Loan
                                   Sections 5-3.5-101 et seq.

                                   Effective for covered loans offered or entered
                                   into on or after January 1, 2003. Other
                                   provisions of the Act took effect on June 7,
                                   2002

Connecticut                        Connecticut Abusive Home Loan Lending Practices   High Cost Home Loan
                                   Act, Conn. Gen. Stat. Sections 36a-746 et seq.

                                   Effective October 1, 2001

District of Columbia               Home Loan Protection Act, D.C. Code Sections      Covered Loan
                                   26-1151.01 et seq.

                                   Effective for loans closed on or after January
                                   28, 2003
</TABLE>

                                      J-36
<PAGE>

STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION

<TABLE>
<CAPTION>
                                                                                             Category under
                                            Name of Anti-Predatory Lending                  Applicable Anti-
       State/Jurisdiction                         Law/Effective Date                      Predatory Lending Law
--------------------------------   ------------------------------------------------  ---------------------------------
<S>                                <C>                                               <C>
Florida                            Fair Lending Act, Fla. Stat. Ann.                 High Cost Home Loan
                                   Sections 494.0078 et seq.

                                   Effective October 2, 2002

Georgia (Oct. 1, 2002 - Mar. 6,    Georgia Fair Lending Act, Ga. Code Ann. Sections  High Cost Home Loan
2003)                              7-6A-1 et seq.

                                   Effective October 1, 2002 - March 6, 2003

Georgia as amended (Mar. 7, 2003   Georgia Fair Lending Act, Ga. Code Ann. Sections  High Cost Home Loan
- current)                         7-6A-1 et seq.

                                   Effective for loans closed on or after March 7,
                                   2003

HOEPA Section 32                   Home Ownership and Equity Protection Act of       High Cost Loan
                                   1994, 15 U.S.C. Section 1639, 12 C.F.R.
                                   Sections 226.32 and 226.34

                                   Effective October 1, 1995, amendments October
                                   1, 2002

Illinois                           High Risk Home Loan Act, Ill. Comp. Stat. tit.    High Risk Home Loan
                                   815, Sections 137/5 et seq.

                                   Effective January 1, 2004 (prior to this
                                   date, regulations under Residential Mortgage
                                   License Act effective from May 14, 2001)

Kansas                             Consumer Credit Code, Kan. Stat. Ann. Sections    High Loan to Value Consumer
                                   16a-1-101 et seq.                                 Loan (id. Section 16a-3-207) and;

                                   Sections 16a-1-301 and 16a-3-207 became           High APR Consumer Loan (id.
                                   effective April 14, 1999; Section 16a-3-308a      Section 16a-3-308a)
                                   became effective July 1, 1999

Kentucky                           2003 KY H.B. 287 - High Cost Home Loan Act, Ky.   High Cost Home Loan
                                   Rev. Stat. Sections 360.100 et seq.

                                   Effective June 24, 2003

Maine                              Truth in Lending, Me. Rev. Stat. tit. 9-A,        High Rate High Fee Mortgage
                                   Sections 8-101 et seq.
</TABLE>

                                      J-37
<PAGE>

STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION

<TABLE>
<CAPTION>
                                                                                         Category under
                                            Name of Anti-Predatory Lending              Applicable Anti-
       State/Jurisdiction                         Law/Effective Date                  Predatory Lending Law
--------------------------------   ------------------------------------------------  -----------------------
<S>                                <C>                                               <C>
                                   Effective September 29, 1995 and as amended
                                   from time to time

Massachusetts                      Part 40 and Part 32, 209 C.M.R. Sections 32.00    High Cost Home Loan
                                   et seq. and 209 C.M.R. Sections 40.01 et seq.

                                   Effective March 22, 2001 and amended from time
                                   to time

Nevada                             Assembly Bill No. 284, Nev. Rev. Stat. Sections   Home Loan
                                   598D.010 et seq.

                                   Effective October 1, 2003

New Jersey                         New Jersey Home Ownership Security Act of 2002,   High Cost Home Loan
                                   N.J. Rev. Stat. Sections 46:10B-22 et seq.

                                   Effective for loans closed on or after November
                                   27, 2003

New Mexico                         Home Loan Protection Act, N.M. Rev. Stat.         High Cost Home Loan
                                   Sections 58-21A-1 et seq.

                                   Effective as of January 1, 2004; Revised as of
                                   February 26, 2004

New York                           N.Y. Banking Law Article 6-l                      High Cost Home Loan

                                   Effective for applications made on or after
                                   April 1, 2003

North Carolina                     Restrictions and Limitations on High Cost Home    High Cost Home Loan
                                   Loans, N.C. Gen. Stat. Sections 24-1.1E et seq.

                                   Effective July 1, 2000; amended October 1,
                                   2003 (adding open-end lines of credit)

Ohio                               H.B. 386 (codified in various sections of the     Covered Loan
                                   Ohio Code), Ohio Rev. Code Ann. Sections
                                   1349.25 et seq.

                                   Effective May 24, 2002
</TABLE>

                                      J-38
<PAGE>

STANDARD & POOR'S HIGH COST LOAN CATEGORIZATION

<TABLE>
<CAPTION>
                                                                                             Category under
                                            Name of Anti-Predatory Lending                  Applicable Anti-
       State/Jurisdiction                         Law/Effective Date                      Predatory Lending Law
--------------------------------   ------------------------------------------------  -------------------------------
<S>                                <C>                                               <C>
Oklahoma                           Consumer Credit Code (codified in various         Subsection 10 Mortgage
                                   sections of Title 14A)

                                   Effective July 1, 2000; amended effective
                                   January 1, 2004

South Carolina                     South Carolina High Cost and Consumer Home        High Cost Home Loan
                                   Loans Act, S.C. Code Ann. Sections 37-23-10
                                   et seq.

                                   Effective for loans taken on or after January
                                   1, 2004

West Virginia                      West Virginia Residential Mortgage Lender,        West Virginia Mortgage Loan Act
                                   Broker and Servicer Act, W. Va. Code Ann.         Loan
                                   Sections 31-17-1 et seq.

                                   Effective June 5, 2002
</TABLE>

STANDARD & POOR'S COVERED LOAN CATEGORIZATION

<TABLE>
<CAPTION>
                                                                                        Category under
                                            Name of Anti-Predatory Lending             Applicable Anti-
       State/Jurisdiction                         Law/Effective Date                 Predatory Lending Law
--------------------------------   ------------------------------------------------  ---------------------
<S>                                <C>                                               <C>

Georgia (Oct. 1, 2002 - Mar. 6,    Georgia Fair Lending Act, Ga. Code Ann. Sections  Covered Loan
2003)                              7-6A-1 et seq.

                                   Effective October 1, 2002 - March 6, 2003

New Jersey                         New Jersey Home Ownership Security Act of 2002,   Covered Home Loan
                                   N.J. Rev. Stat. Sections 46:10B-22 et seq.

                                   Effective November 27, 2003 - July 5, 2004
</TABLE>

                                      J-39
<PAGE>

STANDARD & POOR'S HOME LOAN CATEGORIZATION

<TABLE>
<CAPTION>
                                                                                        Category under
                                            Name of Anti-Predatory Lending             Applicable Anti-
       State/Jurisdiction                         Law/Effective Date                 Predatory Lending Law
--------------------------------   ------------------------------------------------  ---------------------
<S>                                <C>                                               <C>
Georgia (Oct. 1, 2002 - Mar. 6,    Georgia Fair Lending Act, Ga. Code Ann. Sections  Home Loan
2003)                              7-6A-1 et seq.

                                   Effective October 1, 2002 - March 6, 2003

New Jersey                         New Jersey Home Ownership Security Act of 2002,   Home Loan
                                   N.J. Rev. Stat. Sections 46:10B-22 et seq.

                                   Effective for loans closed on or after November
                                   27, 2003

New Mexico                         Home Loan Protection Act, N.M. Rev. Stat.         Home Loan
                                   Sections 58-21A-1 et seq.

                                   Effective as of January 1, 2004; Revised as of
                                   February 26, 2004

North Carolina                     Restrictions and Limitations on High Cost Home    Consumer Home Loan
                                   Loans, N.C. Gen. Stat. Sections 24-1.1E et seq.

                                   Effective July 1, 2000; amended October 1,
                                   2003 (adding open-end lines of credit)

South Carolina                     South Carolina High Cost and Consumer Home        Consumer Home Loan
                                   Loans Act, S.C. Code Ann. Sections 37-23-10
                                   et seq.

                                   Effective for loans taken on or after January
                                   1, 2004
</TABLE>

                                      J-40
<PAGE>

                 SCHEDULE A TO MORTGAGE LOAN PURCHASE AGREEMENT

                 REQUIRED RATINGS FOR EACH CLASS OF CERTIFICATES

                              Offered Certificates

<TABLE>
<CAPTION>
    Class                   Moody's                  S&P
-------------               -------                  ---
<S>                         <C>                      <C>
Class I-A                     Aaa                    AAA
Class II-A                    Aaa                    AAA
Class III-A-1                 Aaa                    AAA
Class III-A-2                 Aaa                    AAA
Class IV-A-1                  Aaa                    AAA
Class IV-A-2                  Aaa                    AAA
Class V-A                     Aaa                    AAA
Class X-A                     Aaa                    AAA
Class A-R                     N/R                    AAA
Class M-1                     Aa2                     AA
Class M-2                      A2                      A
Class M-3                     Baa2                   BBB
</TABLE>

None of the above ratings has been lowered since the respective dates of such
letters.

                                      J-41
<PAGE>

                                    EXHIBIT K

                       SERVICING CRITERIA TO BE ADDRESSED
                           IN ASSESSMENT OF COMPLIANCE
                          (RMBS unless otherwise noted)

      KEY:  X - obligation

WHERE THERE ARE MULTIPLE CHECKS FOR CRITERIA THE ATTESTING PARTY WILL IDENTIFY
IN ITS MANAGEMENT ASSERTION THAT IT IS ATTESTING ONLY TO THE PORTION OF THE
DISTRIBUTION CHAIN IT IS RESPONSIBLE FOR IN THE RELATED TRANSACTION AGREEMENTS.
CAPITALIZED TERMS USED HEREIN BUT NOT DEFINED HEREIN SHALL HAVE THE MEANINGS
ASSIGNED TO THEM IN THE POOLING AND SERVICING AGREEMENT, DATED AS OF JULY 1,
2006, AMONG MERRILL LYNCH MORTGAGE INVESTORS, INC., AS DEPOSITOR, WELLS FARGO
BANK, N.A., AS MASTER SERVICER AND SECURITIES ADMINISTRATOR, AND HSBC BANK USA,
NATIONAL ASSOCIATION, AS TRUSTEE.

<TABLE>
<CAPTION>
REG AB REFERENCE                        SERVICING CRITERIA                      SECURITIES ADMINISTRATOR    MASTER SERVICER
----------------    ---------------------------------------------------------   ------------------------    ---------------
<S>                 <C>                                                         <C>                         <C>
                    GENERAL SERVICING CONSIDERATIONS

1122(d)(1)(i)       Policies and procedures are instituted to monitor any                  X                       X
                    performance or other triggers and events of default in
                    accordance with the transaction agreements.

1122(d)(1)(ii)      If any material servicing activities are outsourced to                 X                       X
                    third parties, policies and procedures are instituted to
                    monitor the third party's performance and compliance with
                    such servicing activities.

1122(d)(1)(iii)     Any requirements in the transaction agreements to                     N/A                     N/A
                    maintain a back-up servicer for the Pool Assets are
                    maintained.

1122(d)(1)(iv)      A fidelity bond and errors and omissions policy is in                                          X
                    effect on the party participating in the servicing
                    function throughout the reporting period in the amount of
                    coverage required by and otherwise in accordance with the
                    terms of the transaction agreements.

                    CASH COLLECTION AND ADMINISTRATION

1122(d)(2)(i)       Payments on pool assets are deposited into the                         X                       X
                    appropriate custodial bank accounts and related bank
                    clearing accounts no more than two business days
                    following receipt, or such other number of days specified
                    in the transaction agreements.

1122(d)(2)(ii)      Disbursements made via wire transfer on behalf of an                   X                       X
                    obligor or to an investor are made only by authorized
                    personnel.

1122(d)(2)(iii)     Advances of funds or guarantees regarding collections,                                         X
                    cash flows or distributions, and any interest or other
                    fees charged for such advances, are made, reviewed and
                    approved as specified in the transaction agreements.

1122(d)(2)(iv)      The related accounts for the transaction, such as cash                 X                       X
                    reserve accounts or accounts established as a form of
                    over collateralization, are separately maintained (e.g.,
                    with respect to commingling of cash) as set forth in the
                    transaction agreements.
</TABLE>

                                      K-1
<PAGE>

<TABLE>
<CAPTION>
REG AB REFERENCE                        SERVICING CRITERIA                      SECURITIES ADMINISTRATOR    MASTER SERVICER
----------------    ---------------------------------------------------------   ------------------------    ---------------
<S>                 <C>                                                         <C>                         <C>
1122(d)(2)(v)       Each custodial account is maintained at a federally                    X                       X
                    insured depository institution as set forth in the
                    transaction agreements. For purposes of this criterion,
                    "federally insured depository institution" with respect
                    to a foreign financial institution means a foreign
                    financial institution that meets the requirements of Rule
                    13k-1(b)(1) of the Securities Exchange Act.

1122(d)(2)(vi)      Unissued checks are safeguarded so as to prevent
                    unauthorized access.

1122(d)(2)(vii)     Reconciliations are prepared on a monthly basis for all                X                       X
                    asset-backed securities related bank accounts, including
                    custodial accounts and related bank clearing accounts.
                    These reconciliations are (A) mathematically accurate;
                    (B) prepared within 30 calendar days after the bank
                    statement cutoff date, or such other number of days
                    specified in the transaction agreements; (C) reviewed
                    and approved by someone other than the person who
                    prepared the reconciliation; and (D) contain
                    explanations for reconciling items. These reconciling
                    items are resolved within 90 calendar days of their
                    original identification, or such other number of days
                    specified in the transaction agreements.

                    INVESTOR REMITTANCES AND REPORTING

1122(d)(3)(i)       Reports to investors, including those to be filed with                 X                       X
                    the Commission, are maintained in accordance with the
                    transaction agreements and applicable Commission
                    requirements. Specifically, such reports (A) are prepared
                    in accordance with timeframes and other terms set forth
                    in the transaction agreements; (B) provide information
                    calculated in accordance with the terms specified in the
                    transaction agreements; (C) are filed with the Commission
                    as required by its rules and regulations; and (D) agree
                    with investors' or the trustee's records as to the total
                    unpaid principal balance and number of Pool Assets
                    serviced by the Servicer.

1122(d)(3)(ii)      Amounts due to investors are allocated and remitted in                 X                       X
                    accordance with timeframes, distribution priority and
                    other terms set forth in the transaction agreements.

1122(d)(3)(iii)     Disbursements made to an investor are posted within two                X                       X
                    business days to the Servicer's investor records, or such
                    other number of days specified in the transaction
                    agreements.

1122(d)(3)(iv)      Amounts remitted to investors per the investor reports                 X                       X
                    agree with cancelled checks, or other form of payment, or
                    custodial bank statements.

                    POOL ASSET ADMINISTRATION

1122(d)(4)(i)       Collateral or security on pool assets is maintained as
                    required by the transaction agreements or related pool
                    asset documents.

1122(d)(4)(ii)      Pool assets and related documents are safeguarded as
                    required by the transaction agreements

1122(d)(4)(iii)     Any additions, removals or substitutions to the asset
                    pool are made, reviewed and approved in accordance with
                    any conditions or requirements in the transaction
                    agreements.
</TABLE>

                                      K-2
<PAGE>

<TABLE>
<CAPTION>
REG AB REFERENCE                        SERVICING CRITERIA                      SECURITIES ADMINISTRATOR    MASTER SERVICER
----------------    ---------------------------------------------------------   ------------------------    ---------------
<S>                 <C>                                                         <C>                         <C>
1122(d)(4)(iv)      Payments on pool assets, including any payoffs, made in
                    accordance with the related pool asset documents are
                    posted to the Servicer's obligor records maintained no
                    more than two business days after receipt, or such other
                    number of days specified in the transaction agreements,
                    and allocated to principal, interest or other items
                    (e.g., escrow) in accordance with the related pool asset
                    documents.

1122(d)(4)(v)       The Servicer's records regarding the pool assets agree
                    with the Servicer's records with respect to an obligor's
                    unpaid principal balance.
1122(d)(4)(vi)      Changes with respect to the terms or status of an
                    obligor's pool assets (e.g., loan modifications or
                    re-agings) are made, reviewed and approved by authorized
                    personnel in accordance with the transaction agreements
                    and related pool asset documents.

1122(d)(4)(vii)     Loss mitigation or recovery actions (e.g., forbearance
                    plans, modifications and deeds in lieu of foreclosure,
                    foreclosures and repossessions, as applicable) are
                    initiated, conducted and concluded in accordance with
                    the timeframes or other requirements established by the
                    transaction agreements.

1122(d)(4)(viii)    Records documenting collection efforts are maintained
                    during the period a pool asset is delinquent in
                    accordance with the transaction agreements. Such records
                    are maintained on at least a monthly basis, or such
                    other period specified in the transaction agreements,
                    and describe the entity's activities in monitoring
                    delinquent pool assets including, for example, phone
                    calls, letters and payment rescheduling plans in cases
                    where delinquency is deemed temporary (e.g., illness or
                    unemployment).

1122(d)(4)(ix)      Adjustments to interest rates or rates of return for pool
                    assets with variable rates are computed based on the
                    related pool asset documents.

1122(d)(4)(x)       Regarding any funds held in trust for an obligor (such
                    as escrow accounts): (A) such funds are analyzed, in
                    accordance with the obligor's pool asset documents, on
                    at least an annual basis, or such other period specified
                    in the transaction agreements; (B) interest on such
                    funds is paid, or credited, to obligors in accordance
                    with applicable pool asset documents and state laws; and
                    (C) such funds are returned to the obligor within 30
                    calendar days of full repayment of the related pool
                    assets, or such other number of days specified in the
                    transaction agreements.

1122(d)(4)(xi)      Payments made on behalf of an obligor (such as tax or
                    insurance payments) are made on or before the related
                    penalty or expiration dates, as indicated on the
                    appropriate bills or notices for such payments, provided
                    that such support has been received by the servicer at
                    least 30 calendar days prior to these dates, or such
                    other number of days specified in the transaction
                    agreements.

1122(d)(4)(xii)     Any late payment penalties in connection with any
                    payment to be made on behalf of an obligor are paid from
                    the Servicer's funds and not charged to the obligor,
                    unless the late payment was due to the obligor's error
                    or omission.
</TABLE>

                                      K-3
<PAGE>

<TABLE>
<CAPTION>
REG AB REFERENCE                        SERVICING CRITERIA                      SECURITIES ADMINISTRATOR    MASTER SERVICER
----------------    ---------------------------------------------------------   ------------------------    ---------------
<S>                 <C>                                                         <C>                         <C>
1122(d)(4)(xiii)    Disbursements made on behalf of an obligor are posted
                    within two business days to the obligor's records
                    maintained by the servicer, or such other number of days
                    specified in the transaction agreements.

1122(d)(4)(xiv)     Delinquencies, charge-offs and uncollectible accounts are                                      X
                    recognized and recorded in accordance with the
                    transaction agreements.

1122(d)(4)(xv)      Any external enhancement or other support, identified in
                    Item 1114(a)(1) through (3) or Item 1115 of Regulation
                    AB, is maintained as set forth in the transaction
                    agreements.
</TABLE>

                                      K-4
<PAGE>

                                    EXHIBIT L

                          SARBANES-OXLEY CERTIFICATION

                                     [DATE]

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

Re: Merrill Lynch Mortgage Investors Trust, Series 2006-A4

I, [identify the certifying individual], certify that:

1. I have reviewed the report on Form 10-K and all reports on Form 10-D required
to be filed in respect of the period covered by this report on Form 10-K of
Merrill Lynch Mortgage Investors Trust, Series 2006-A4 (the "Exchange Act
periodic reports");

2. Based on my knowledge, the Exchange Act periodic reports, taken as a whole,
do not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in light of the
circumstances under which such statements were made, not misleading with respect
to the period covered by this report;

3. Based on my knowledge, all of the distribution, servicing and other
information required to be provided under Form 10-D for the period covered by
this report is included in the Exchange Act periodic reports;

4. [I am responsible for reviewing the activities performed by the servicer(s)
and based on my knowledge and the compliance review(s) conducted in preparing
the servicer compliance statement(s) required in this report under Item 1123 of
Regulation AB, and except as disclosed in the Exchange Act periodic reports, the
servicer(s) [has/have] fulfilled [its/their] obligations under the servicing
agreement(s) in all material respects; and]

5. All of the reports on assessment of compliance with servicing criteria for
ABS and their related attestation reports on assessment of compliance with
servicing criteria for asset-backed securities required to be included in this
report in accordance with Item 1122 of Regulation AB and Exchange Act Rules
13a-18 and 15d-18 have been included as an exhibit to this report, except as
otherwise disclosed in this report. Any material instances of noncompliance
described in such reports have been disclosed in this report on Form 10-K.

                                      L-1
<PAGE>

[In giving the certifications above, I have reasonably relied on information
provided to me by the following unaffiliated parties [name of servicer,
sub-servicer, co-servicer, depositor or trustee].]

Date: ________________________

                                    ________________________________________
                                    [Signature]
                                    [Title]

                                      L-2
<PAGE>

                                    EXHIBIT M

                  FORM OF BACK-UP SARBANES-OXLEY CERTIFICATION

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

Re: Merrill Lynch Mortgage Investors Trust, Series 2006-A4

[_______], the [_______] of [_______] (the "Company") hereby certifies to the
Depositor, the Master Servicer and the Securities Administrator, and each of
their officers, directors and affiliates that:

(1) I have reviewed [the servicer compliance statement of the Company provided
in accordance with Item 1123 of Regulation AB (the "Compliance Statement"),] the
report on assessment of the Company's compliance with the Servicing Criteria set
forth in Item 1122(d) of Regulation AB (the "Servicing Criteria"), provided in
accordance with Rules 13a-18 and 15d-18 under the Securities Exchange Act of
1934, as amended (the "Exchange Act") and Item 1122 of Regulation AB (the
"Servicing Assessment"), the registered public accounting firm's attestation
report provided in accordance with Rules 13a-18 and 15d-18 under the Exchange
Act and Section 1122(b) of Regulation AB (the "Attestation Report"), and all
servicing reports, officer's certificates and other information relating to the
servicing of the Mortgage Loans by the Company during 200[ ] that were delivered
by the Company to any of the Depositor, the Master Servicer and the Trustee
pursuant to the Agreement (collectively, the "Company Servicing Information");

(2) Based on my knowledge, the Company Servicing Information, taken as a whole,
does not contain any untrue statement of a material fact or omit to state a
material fact necessary to make the statements made, in the light of the
circumstances under which such statements were made, not misleading with respect
to the period of time covered by the Company Servicing Information;

(3) Based on my knowledge, all of the Company Servicing Information required to
be provided by the Company under the Agreement has been provided to the
Depositor, the Master Servicer and the Securities Administrator;

(4) I am responsible for reviewing the activities performed by [_______] as
[_______] under the [_______] (the "Agreement"), and based on my knowledge [and
the compliance review conducted in preparing the Compliance Statement] and
except as disclosed in [the Compliance Statement,] the Servicing Assessment or
the Attestation Report, the Company has fulfilled its obligations under the
Agreement in all material respects; and

                                      M-1
<PAGE>

(5) [The Compliance Statement required to be delivered by the Company pursuant
to the Agreement, and] [The] [the] Servicing Assessment and Attestation Report
required to be provided by the Company and [by any Subservicer or Subcontractor]
pursuant to the Agreement, have been provided to the Depositor, the Master
Servicer and the Securities Administrator. Any material instances of
noncompliance described in such reports have been disclosed to the Depositor,
the Master Servicer and the Securities Administrator. Any material instance of
noncompliance with the Servicing Criteria has been disclosed in such reports.

Capitalized terms used but not defined herein have the meanings ascribed to them
in the Pooling and Servicing Agreement, dated as of July 1, 2006, among Merrill
Lynch Mortgage Investors, Inc., as depositor (the "Depositor"), Wells Fargo
Bank, N.A., as master servicer (in such capacity, the "Master Servicer") and
securities administrator (in such capacity, the "Securities Administrator") and
HSBC Bank USA, National Association, as trustee (the "Trustee").

                                     [_______]
                                     as [_______]

                                     By:
                                         Name:
                                         Title:
                                         Date:

                                      M-2
<PAGE>

                                    EXHIBIT N

                                   [RESERVED]

                                      N-1
<PAGE>

                                    EXHIBIT O

                       ADDITIONAL DISCLOSURE NOTIFICATION

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

RE: Merrill Lynch Mortgage Investors Trust, Series 2006-A4
    **Additional Form [10-D][10-K][8-K] Disclosure** Required

Ladies and Gentlemen:

In accordance with Section 3.18(b) of the Pooling and Servicing Agreement, dated
as of July 1, 2006, among Merrill Lynch Mortgage Investors, Inc., as depositor,
Wells Fargo Bank, N.A., as master servicer and securities administrator and HSBC
Bank USA, National Association, as trustee, the undersigned, as [ ], hereby
notifies you that certain events have come to our attention that [will] [may]
need to be disclosed on Form [10-D][10-K][8-K].

Description of Additional Form [10-D][10-K][8-K] Disclosure:

List of any Attachments hereto to be included in the Additional Form
[10-D][10-K][8-K] Disclosure:

      Any inquiries related to this notification should be directed to [      ],
phone number: [      ]; email address: [      ].

                                      [NAME OF PARTY],
                                      as [role]

                                      By: _____________________________________
                                          Name:
                                          Title:

                                      O-1
<PAGE>

                                    EXHIBIT P

                   FORM OF ITEM 1123 CERTIFICATION OF SERVICER

                                     [DATE]

Merrill Lynch Mortgage Investors, Inc.
250 Vesey Street
4 World Financial Center, 10th Floor
New York, New York 10080

Wells Fargo Bank, N.A.
9062 Old Annapolis Road
Columbia, MD 21045

Re: Merrill Lynch Mortgage Investors Trust, Series 2006-A4 Mortgage Pass-Through
    Certificates

I, [identify name of certifying individual], [title of certifying individual] of
[name of servicing company] (the "Servicer"), hereby certify that:

(1) A review of the activities of the Servicer during the preceding calendar
year and of the performance of the Servicer under the [related servicing
agreement] (the "Servicing Agreement") has been made under my supervision; and

(2) To the best of my knowledge, based on such review, the Servicer has
fulfilled all its obligations under the related Servicing Agreement in all
material respects throughout such year or a portion thereof[, or, if there has
been a failure to fulfill any such obligation in any material respect, I have
specified below each such failure known to me and the nature and status
thereof].

Date:

                                      [Servicer]

                                      By: ___________________________________
                                      Name: _________________________________
                                      Title: ________________________________

                                       P-1
<PAGE>

                                   EXHIBIT Q-1

                         ADDITIONAL FORM 10-D DISCLOSURE

<TABLE>
<CAPTION>
                                         ADDITIONAL FORM 10-D DISCLOSURE
-----------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 10-D                                         PARTY RESPONSIBLE
-------------------------------------------------------    ------------------------------------------------------
<S>                                                        <C>
  ITEM 1: DISTRIBUTION AND POOL PERFORMANCE INFORMATION

     Information included in the [Monthly Statement]                           Master Servicer
                                                                                  Servicer
                                                                          Securities Administrator

 Any information required by 1121 which is NOT included                           Depositor
               on the [Monthly Statement]

                ITEM 2: LEGAL PROCEEDINGS

Any legal proceeding pending against the following
entities or their respective property, that is material
to Certificateholders, including any proceeding known
to be contemplated by governmental authorities:

- Issuing Entity (Trust Fund)                              Trustee, Master Servicer, Securities Administrator and
                                                                                  Depositor

- Sponsor (Seller)                                             Seller (if a party to the Pooling and Servicing
                                                                            Agreement) or Depositor

- Depositor                                                                       Depositor

- Trustee                                                                          Trustee

- Securities Administrator                                                Securities Administrator

- Master Servicer                                                              Master Servicer

- Custodian                                                                       Custodian

- 1110(b) Originator                                                              Depositor

-  Any  1108(a)(2)   Servicer   (other  than  the  Master                         Servicer
Servicer or Securities Administrator)

- Any other party contemplated by 1100(d)(1)                                      Depositor

     ITEM 3: SALE OF SECURITIES AND USE OF PROCEEDS                               Depositor

Information from Item 2(a) of Part II of Form 10-Q:

With respect to any sale of securities by the sponsor,
depositor or issuing entity, that are backed by the
same asset pool or are otherwise issued by the issuing
entity, whether or not registered, provide the sales
and use of proceeds information in Item 701 of
Regulation S-K. Pricing information can be omitted if
securities were not registered.
</TABLE>

                                     Q-1-1
<PAGE>

<TABLE>
<CAPTION>
                                         ADDITIONAL FORM 10-D DISCLOSURE
-----------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 10-D                                         PARTY RESPONSIBLE
-------------------------------------------------------    ------------------------------------------------------
<S>                                                        <C>
         ITEM 4: DEFAULTS UPON SENIOR SECURITIES                          Securities Administrator

                                                                                   Trustee

Information from Item 3 of Part II of Form 10-Q:

Report the occurrence of any Event of Default (after
expiration of any grace period and provision of any
required notice)

   ITEM 5: SUBMISSION OF MATTERS TO A VOTE OF SECURITY                    Securities Administrator
                         HOLDERS                                                   Trustee

Information from Item 4 of Part II of Form 10-Q

       ITEM 6: SIGNIFICANT OBLIGORS OF POOL ASSETS                                Depositor

Item 1112(b) - Significant Obligor Financial
Information*

*This information need only be reported on the Form
10-D for the distribution period in which updated
information is required pursuant to the Item.

  ITEM 7: SIGNIFICANT ENHANCEMENT PROVIDER INFORMATION

Item 1114(b)(2) - Credit Enhancement Provider Financial
Information*

- Determining applicable disclosure threshold                                     Depositor

- Requesting  required financial  information                                     Depositor
(including any required  accountants' consent to the
use thereof) or effecting incorporation by reference

    Item 1115(b) - Derivative Counterparty Financial
                      Information*

- Determining current maximum probable exposure                                   Depositor

- Determining current significance percentage                                     Depositor

- Requesting required financial information (including                            Depositor
any required accountants' consent to the use thereof)
or effecting incorporation by reference

*This information need only be reported on the Form
10-D for the distribution period in which updated
information is required pursuant to the Items.
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                         ADDITIONAL FORM 10-D DISCLOSURE
---------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 10-D                                        PARTY RESPONSIBLE
-------------------------------------------------------    ----------------------------------------------------
<S>                                                        <C>
                ITEM 8: OTHER INFORMATION                     Any party responsible for the applicable Form 8-K
                                                                               Disclosure item
Disclose any information  required to be reported on
Form 8-K during  the  period  covered by the Form 10-D
but not reported

                    ITEM 9: EXHIBITS

         Monthly Statement to Certificateholders                          Securities Administrator

Exhibits required by Item 601 of Regulation S-K, such as                          Depositor
                   material agreements
</TABLE>

<PAGE>

                                   EXHIBIT Q-2

                         ADDITIONAL FORM 10-K DISCLOSURE

<TABLE>
<CAPTION>
                                         ADDITIONAL FORM 10-K DISCLOSURE
--------------------------------------------------------------------------------------------------------
                   ITEM ON FORM 10-K                                       PARTY RESPONSIBLE
-------------------------------------------------------    ---------------------------------------------
<S>                                                        <C>
           ITEM 1B: UNRESOLVED STAFF COMMENTS                                     Depositor

               ITEM 9B: OTHER INFORMATION                  Any party responsible for disclosure items on
                                                                               Form 8-K

Disclose any information required to be reported on
Form 8-K during the fourth quarter covered by the
Form 10-K but not reported

    ITEM 15: EXHIBITS, FINANCIAL STATEMENT SCHEDULES                  Securities Administrator
                                                                              Depositor

        REG AB ITEM 1112(b): SIGNIFICANT OBLIGORS
                     OF POOL ASSETS

Significant Obligor Financial Information*                                    Depositor

*This information need only be reported on the Form
10-K if updated information is required pursuant to
the Item.

  REG AB ITEM 1114(b)(2): CREDIT ENHANCEMENT PROVIDER
                 FINANCIAL INFORMATION

- Determining applicable disclosure threshold                                 Depositor

- Requesting required financial information (including                        Depositor
any required accountants' consent to the use thereof) or
effecting incorporation by reference

*This information need only be reported on the Form 10-K
if updated information is required pursuant to the Item.

 REG AB ITEM 1115(b): DERIVATIVE COUNTERPARTY FINANCIAL
                       INFORMATION

- Determining current maximum probable exposure                               Depositor

- Determining current significance percentage                                 Depositor

- Requesting  required financial  information  (including                     Depositor
any required  accountants' consent to the use thereof) or
effecting incorporation by reference

*This information need only be reported on the Form 10-K
if updated information is required pursuant to the
Item.

           REG AB ITEM 1117: LEGAL PROCEEDINGS

Any legal proceeding pending against the following
entities or their respective property, that is material
to Certificateholders, including any proceeding known
to be contemplated by governmental authorities:
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                         ADDITIONAL FORM 10-K DISCLOSURE
-----------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 10-K                                         PARTY RESPONSIBLE
-------------------------------------------------------    ------------------------------------------------------
<S>                                                        <C>
- Issuing Entity (Trust Fund)                              Trustee, Master Servicer, Securities Administrator and
                                                                                  Depositor

- Sponsor (Seller)                                             Seller (if a party to the Pooling and Servicing
                                                                             Agreement) or Depositor

- Depositor                                                                       Depositor

- Trustee                                                                          Trustee

- Securities Administrator                                                Securities Administrator

- Master Servicer                                                              Master Servicer

- Custodian                                                                       Custodian

- 1110(b) Originator                                                              Depositor

-  Any 1108(a)(2) Servicer (other than the Master                                  Servicer
Servicer or Securities Administrator)

- Any other party contemplated by 1100(d)(1)                                      Depositor

    REG AB ITEM 1119: AFFILIATIONS AND RELATIONSHIPS

Whether (a) the Sponsor (Seller), Depositor or Issuing                       Depositor as to (a)
Entity is an affiliate of the following parties, and (b)                   Sponsor/Seller as to (a)
to the extent known and material, any of the following
parties are affiliated with one another:

- Master Servicer                                                              Master Servicer

- Securities Administrator                                                Securities Administrator

- Trustee                                                                          Trustee

- Any other 1108(a)(3) servicer                                                   Servicer

- Any 1110 Originator                                                         Depositor/Sponsor

- Any 1112(b) Significant Obligor                                             Depositor/Sponsor

- Any 1114 Credit Enhancement Provider                                        Depositor/Sponsor

- Any 1115 Derivate Counterparty Provider                                     Depositor/Sponsor

- Any other 1101(d)(1) material party                                         Depositor/Sponsor

Whether there are any "outside the ordinary course                           Depositor as to (a)
business arrangements" other than would be obtained in                     Sponsor/Seller as to (a)
an arm's length transaction between (a) the Sponsor
(Seller), Depositor or Issuing Entity on the one hand,
and (b) any of the following parties (or their
affiliates) on the other hand, that exist currently or
within the past two years and that are material to a
Certificateholder's understanding of the Certificates:

- Master Servicer                                                              Master Servicer

- Securities Administrator                                                Securities Administrator

- Trustee                                                                         Depositor

- Any other 1108(a)(3) servicer                                                   Servicer

- Any 1110 Originator                                                         Depositor/Sponsor

- Any 1112(b) Significant Obligor                                             Depositor/Sponsor

- Any 1114 Credit Enhancement Provider                                        Depositor/Sponsor
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                         ADDITIONAL FORM 10-K DISCLOSURE
-----------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 10-K                                         PARTY RESPONSIBLE
-------------------------------------------------------    ------------------------------------------------------
<S>                                                        <C>
- Any 1115 Derivate Counterparty Provider                                     Depositor/Sponsor

- Any other 1101(d)(1) material party                                         Depositor/Sponsor

Whether there are any specific relationships involving                       Depositor as to (a)
the transaction or the pool assets between (a) the                         Sponsor/Seller as to (a)
Sponsor (Seller), Depositor or Issuing Entity on the one
hand, and (b) any of the following parties (or their
affiliates) on the other hand, that exist currently or
within the past two years and that are material:

- Master Servicer                                                              Master Servicer

- Securities Administrator                                                Securities Administrator

- Trustee                                                                         Depositor

- Any other 1108(a)(3) servicer                                                   Servicer

- Any 1110 Originator                                                         Depositor/Sponsor

- Any 1112(b) Significant Obligor                                             Depositor/Sponsor

- Any 1114 Credit Enhancement Provider                                        Depositor/Sponsor

- Any 1115 Derivate Counterparty Provider                                     Depositor/Sponsor

- Any other 1101(d)(1) material party                                         Depositor/Sponsor
</TABLE>

<PAGE>

                                   EXHIBIT Q-3

                         FORM 8-K DISCLOSURE INFORMATION

<TABLE>
<CAPTION>
                                         FORM 8-K DISCLOSURE INFORMATION
-----------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 8-K                                          PARTY RESPONSIBLE
-------------------------------------------------------    ------------------------------------------------------
<S>                                                        <C>
 ITEM 1.01- ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT                           All parties

Disclosure is required regarding entry into or
amendment of any definitive agreement that is material
to the securitization, even if depositor is not a
party.

Examples: servicing agreement, custodial agreement.

Note: disclosure not required as to definitive
agreements that are fully disclosed in the prospectus

    ITEM 1.02- TERMINATION OF A MATERIAL DEFINITIVE                              All parties
                       AGREEMENT

Disclosure is required regarding termination of any
definitive agreement that is material to the
securitization (other than expiration in accordance
with its terms), even if depositor is not a party.

Examples: servicing agreement, custodial agreement.

          ITEM 1.03- BANKRUPTCY OR RECEIVERSHIP                                   Depositor

Disclosure is required regarding the bankruptcy or
receivership, with respect to any of the following:

- Sponsor (Seller)                                                       Depositor/Sponsor (Seller)

- Depositor                                                                       Depositor

- Master Servicer                                                              Master Servicer

- Affiliated Servicer                                                             Servicer

- Other Servicer servicing 20% or more of the pool                                Servicer
assets at the time of the report

- Other material servicers                                                        Servicer

- Trustee                                                                          Trustee

- Securities Administrator                                                Securities Administrator

- Significant Obligor                                                             Depositor

- Credit Enhancer (10% or more)                                                   Depositor

- Derivative Counterparty                                                         Depositor

- Custodian                                                                       Custodian
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                         FORM 8-K DISCLOSURE INFORMATION
-----------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 8-K                                          PARTY RESPONSIBLE
-------------------------------------------------------    ------------------------------------------------------
<S>                                                        <C>
ITEM 2.04- TRIGGERING EVENTS THAT ACCELERATE OR INCREASE                          Depositor
 A DIRECT FINANCIAL OBLIGATION OR AN OBLIGATION UNDER AN                       Master Servicer
              OFF-BALANCE SHEET ARRANGEMENT                               Securities Administrator

Includes an early amortization, performance trigger or
other event, including event of default, that would
materially alter the payment priority/distribution
of cash flows/amortization schedule.

Disclosure will be made of events other than waterfall
triggers which are disclosed in the monthly statements
to the certificateholders.

 ITEM 3.03- MATERIAL MODIFICATION TO RIGHTS OF SECURITY                   Securities Administrator
                         HOLDERS                                                   Trustee

                                                                                  Depositor

Disclosure is required of any material modification to
documents defining the rights of Certificateholders,
including the Pooling and Servicing Agreement.

  ITEM 5.03- AMENDMENTS OF ARTICLES OF INCORPORATION OR                           Depositor
              BYLAWS; CHANGE OF FISCAL YEAR

Disclosure is required of any amendment "to the
governing documents of the issuing entity".

 ITEM 6.01- ABS INFORMATIONAL AND COMPUTATIONAL MATERIAL                          Depositor

      ITEM 6.02- CHANGE OF SERVICER OR SECURITIES                        Master Servicer/Securities
                  ADMINISTRATOR                                            Administrator/Depositor/
                                                                              Servicer/Trustee

Requires disclosure of any removal, replacement,
substitution or addition of any master servicer,
affiliated servicer, other servicer servicing 10% or
more of pool assets at time of report, other material
servicers or trustee.

Reg AB disclosure about any new servicer or master
Servicer/Master Servicer/Depositor servicer is also
required.

Reg AB disclosure about any new Trustee is also required.                          Trustee

   ITEM 6.03- CHANGE IN CREDIT ENHANCEMENT OR EXTERNAL               Depositor/Securities Administrator
                         SUPPORT

Covers termination of any enhancement in manner other
than by its terms, the addition of an enhancement, or a
material change in the enhancement provided.  Applies
to external credit enhancements as well as derivatives.
</TABLE>

<PAGE>

<TABLE>
<CAPTION>
                                         FORM 8-K DISCLOSURE INFORMATION
-----------------------------------------------------------------------------------------------------------------
                    ITEM ON FORM 8-K                                          PARTY RESPONSIBLE
-------------------------------------------------------    ------------------------------------------------------
<S>                                                        <C>
Reg AB disclosure about any new enhancement provider is
Depositor also required.

   ITEM 6.04- FAILURE TO MAKE A REQUIRED DISTRIBUTION                     Securities Administrator
                                                                                   Trustee

      ITEM 6.05- SECURITIES ACT UPDATING DISCLOSURE                               Depositor

If any material pool characteristic differs by 5% or
more at the time of issuance of the securities from the
description in the final prospectus, provide updated
Reg AB disclosure about the actual asset pool.

If there are any new servicers or originators required
Depositor to be disclosed under Regulation AB as a
result of the foregoing, provide the information called
for in Items 1108 and 1110 respectively.

              ITEM 7.01- REG FD DISCLOSURE                                       All parties

                 ITEM 8.01- OTHER EVENTS                                          Depositor

   Any event, with respect to which information is not
  otherwise called for in Form 8-K, that the registrant
       deems of importance to certificateholders.

      ITEM 9.01- FINANCIAL STATEMENTS AND EXHIBITS             Responsible party for reporting/disclosing the
                                                                       financial statement or exhibit
</TABLE>