Document:

POOLING AND SERVICING AGREEMENT

     

     

     

     

     

    EXHIBIT
      4.1

     

     

    

     

    Citicorp
      Mortgage Securities, Inc.

     

     

    Depositor

     

    CitiMortgage,
      Inc.

     

    Servicer
      and Master Servicer

     

    U.S.
      Bank
      National Association

     

    Trustee

     

    Citibank,
      N.A.

     

    Paying
      Agent, Certificate Registrar

     

    and
      Authenticating Agent

     

    Pooling
      and Servicing Agreement

     

    CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4

     

    REMIC
      Pass-Through Certificates

     

     

    September
      1, 2006

     

    

     

    

    
      
        
          
            

            

            

          

           

        

        
          1

          
            

          

        

        
           

          
          

        

      

    

    
 

    

      Contents

       

      Parties
        9

       

      Background
        9

       

      Agreement
        9

       

      Series
        Terms 9

       

      12 The
        series 9

       

      12.1 Establishment
        9

       

      12.2 General
        terms for classes 10

       

      12.3 Target
        rate 12

       

      12.4 Ratio-stripped
        IO and PO classes 12

       

      12.5 Loss
        limits 12

       

      12.6 Denominations
        12

       

      12.7 The
        mortgage loans 12

       

      12.8 Right
        to
        repurchase 12

       

      12.9 Book-entry
        and definitive certificates 12

       

      12.10 Voting
        interests 12

       

      12.11 Cash
        deposit 13

       

      13 Principal
        balances 13

       

      13.1 Class
        balances 13

       

      13.2 Certificate
        balances 13

       

      14 Allocations
        13

       

      14.1 Interest
        allocations 13

       

      14.2 Principal
        allocations 14

       

      14.3 Unscheduled
        principal 14

       

      14.4 Maintenance
        of subordination 15

       

      15 Allocations
        among the senior classes 16

       

      15.1 Order
        of
        allocation among senior target-rate classes 16

       

      15.2 nas
        classes
        16

       

      15.3 pac
        and
tac
        classes
        17

       

      16 Distributions
        17

       

      16.1 Types
        of
        distributions 17

       

      16.2 Accrual
        and accrual directed classes 17

       

      16.3 Distribution
        priorities 17

       

      16.4 Distributions
        to certificate holders 18

       

      16.5 Final
        distribution on the residual certificates 18

       

      16.6 Wire
        transfer eligibility 18

       

      17 Adjustments
        to class balances 19

       

      18 Loss
        recoveries 20

       

      19 Additional
        structuring features 20

       

      20 Libor
        classes
        21

       

      21 Composite
        and component classes 21

       

      22 Multiple-pool
        series 22

       

      22.1 Adjustment
        of subordinated component class principal balances 22

       

      22.2 Maintenance
        of subordination 24

       

      22.3 Distribution
        shortfalls 24

       

      22.4 Undersubordination
        24

       

      22.5 Undercollateralization
        25

       

      22.6 Non-subordinated
        interest shortfalls 26

       

      23 Super
        senior classes 27

       

      24 Retail
        classes 27

       

      25 Insured
        classes 27

       

      26 Advance
        account 27

       

      27 Remic
        provisions
        27

       

      27.1 Constituent
        remics
        27

       

      27.2 The
        class
        P and class L regular interests 28

       

      27.3 Distributions
        to class P and class L regular interests 28

       

      27.4 remic
        accounts
        and distributions 29

       

      27.5 Tax
        matters person 31

       

      
        
           

        

        
          2

          
            

          

        

        
           

        

      

       

      28 Yield
        maintenance agreement 32

       

      28.1 Agreement
        32

       

      28.2 Tax
        treatment 32

       

      29 Notice
        addresses 33

       

      30 Initial
        Depositories 33

       

      Standard
        Terms 34

       

      1 Definitions
        and usages 34

       

      1.1 Defined
        terms 34

       

      1.2 Usages
        50

       

      1.3 Calculations
        respecting mortgage loans 50

       

      2 Transfer
        of mortgage loans and issuance of certificates; repurchase and substitution
        51

       

      2.1 Transfer
        of mortgage loans 51

       

      2.2 Cmsi’s
        representations and warranties 54

       

      2.3 Repurchase
        or substitution of mortgage loans 56

       

      3 Servicing
        58

       

      3.1 CitiMortgage
        as servicer and master servicer 58

       

      3.2 Collections
        60

       

      3.3 Certificate
        and other accounts 60

       

      3.4 Prepayment
        interest shortfalls 63

       

      3.5 Advances
        63

       

      3.6 Distributions
        65

       

      3.7 Third-party
        servicing 68

       

      3.8 Permitted
        withdrawals from certificate account 69

       

      3.9 Expenses
        70

       

      3.10 Primary
        mortgage insurance 70

       

      3.11 Hazard
        insurance 71

       

      3.12 Realization
        on defaulted mortgage loans 71

       

      3.13 Release
        of mortgage files 74

       

      3.14 Reports
        to certificate holders and others 74

       

      3.15 Tax
        returns and reports 76

       

      3.16 Application
        of buydown funds 77

       

      3.17 Assumption
        and modification agreements 77

       

      3.18 Refinancings
        and curtailments; loan modifications 78

       

      3.19 Investment
        accounts 79

       

      3.20 Paying
        Agent and Certificate Registrar 82

       

      3.21 Exchange
        Act reporting 83

       

      4 CitiMortgage
        84

       

      4.1 Liability
        of CitiMortgage and others 84

       

      4.2 Assumption
        of CitiMortgage’s obligations by affiliate 85

       

      4.3 Maintenance
        of office or agency 85

       

      4.4 Servicer
        not to resign 85

       

      4.5 Delegation
        of duties 85

       

      4.6 Errors
        and omissions insurance
        85

       

      5 The
        certificates 86

       

      5.1 The
        certificates 86

       

      5.2 Registration
        of transfer and exchange of certificates 87

       

      5.3 Mutilated,
        destroyed, lost or stolen certificates 90

       

      5.4 Persons
        deemed owners 91

       

      5.5 Access
        to
        list of certificate holders’ names and addresses 91

       

      5.6 Definitive
        certificates 91

       

      5.7 Notices
        to Clearing Agency 92

       

      6 [Reserved]
        92

       

      7 Default
        92

       

      7.1 Events
        of
        Default 92

       

       

      
        
           

        

        
          3

          
            

          

        

        
           

        

      

       

      7.2 Trustee
        to act; appointment of successor 93

       

      8 The
        Trustee 94

       

      8.1 Duties
        94

       

      8.2 Liability
        95

       

      8.3 Trustee
        not liable for certificates or mortgage loans 95

       

      8.4 Trustee
        may own certificates 96

       

      8.5 Trustee’s
        fees and expenses 96

       

      8.6 Eligibility
        requirements for Trustee 97

       

      8.7 Resignation
        or removal of Trustee 97

       

      8.8 Successor
        trustee 98

       

      8.9 Merger
        or
        consolidation of Trustee 98

       

      8.10 Appointment
        of co-trustee or separate trustee 99

       

      8.11 Tax
        returns 100

       

      8.12 Appointment
        of authenticating agent 100

       

      9 Termination
        101

       

      9.1 Termination
        upon repurchase by cmsi
        or
        liquidation of all mortgage loans 101

       

      10 General
        provisions 103

       

      10.1 Amendments
        103

       

      10.2 Recordation
        of Agreement 104

       

      10.3 Limitation
        on rights of certificate holders 105

       

      10.4 Governing
        law 105

       

      10.5 Maintenance
        of remics
        105

       

      10.6 Notices
        105

       

      10.7 Severability
        of provisions 106

       

      10.8 Assignment
        106

       

      10.9 Certificates
        nonassessable and fully paid 106

       

      11 Depositories
        106

       

      11.1 Depositories
        106

       

      Signatures
        and acknowledgments

    

     

     

    Schedule
      1: Servicing criteria to be addressed in report on assessment of
      compliance

     

     

    PAC
      Schedule
PAC
      1

     

     

    Appendix
      1: Transferee’s Affidavit

     

     

    Exhibit
      A: Forms of certificates A-1

     

     

    Exhibit
      B: Mortgage Loan Schedules 

     

     

    Exhibit
      C: Form of Mortgage Document Custodial Agreement C-1

     

     

    Exhibit
      D: Form of Purchaser Letter D-1

     

     

    Exhibit
      E: Form of ERISA Letter E-1

     

     

    Exhibit
      F: Form of Yield Maintenance Agreement F-1

     

    

    
      
         

      

      
        4

        
          

        

      

      
         

      

    

     

     

    Defined Terms

    

    accrual
      class, 17

    accrual
      directed class, 17

    accrual
      termination day, 34

    advance
      account, 27

    advance
      account advances, 27

    advance
      account available advance amount, 27

    advance
      account depository, 27

    advance
      account depository agreement, 27

    advance
      account funding date, 27

    advance
      account trigger date, 27

    affiliate,
      34

    affiliated
      mortgage loans, 58

    affiliated
      Paying Agent advances, 64

    affiliated
      servicing fee rate, 34

    Agent,
      88

    aggregate
      outstanding advances, 34

    allocated
      loss, 20

    alternative
      certificate account, 106

    alternative
      custodial accounts for P&I, 106

    alternative
      escrow account, 106

    alternative
      servicing account, 106

    applicable
      constituent REMIC, 27

    appraisal,
      34

    assumed
      principal balance, 32

    Authenticating
      Agent, 9, 100

    Authorized
      Officer, 34

    Bankruptcy
      Code, 34

    bankruptcy
      coverage termination date, 34

    bankruptcy
      loss, 34

    bankruptcy
      loss limit, 34

    beneficial
      owner, 35

    book-entry
      certificates, 12

    business
      day, 35

    buydown
      account, 35

    buydown
      funds, 35

    buydown
      mortgage loan, 35

    buydown
      subsidy agreement, 35

    certificate
      account, 60

    certificate
      holder, 35

    certificate
      insurance policy, 27

    certificate
      rate, 10

    Certificate
      Register, 87

    Certificate
      Registrar, 10

    certificates,
      9

    Citibank
      banking affiliate, 35

    CitiMortgage,
      9

    class,
      35

    class
      B
      holder, 58

    class
      B-x, 9

    class
      B-x
      certificates, 9

    class
      IA-IO, 9

    class
      IA-IO certificates, 9

    class
      IA-PO, 9

    class
      IA-PO certificates, 9

    class
      IA-x, 9

    class
      IA-x
      certificates, 9

    class
      IIA-1, 9

    class
      IIA-1
      certificates, 9

    class
      IIA-IO, 9

    class
      IIA-IO certificates, 9

    class
      IIA-PO, 9

    class
      IIA-PO certificates, 9

    class
      L
      regular interest, 28

    class
      LR
      certificates, 9

    class
      P
      regular interests, 28

    class
      percentage, 35

    class
      PR
      certificates, 9

    class
      R
      certificates, 9

    classes
      A-x
      through
      A-y,
      36

    classes
      B-x
      through
      B-y,
      36

    Clearing
      Agency, 36

    Clearing
      Agency Participant, 36

    closing
      date, 10

    CMSI,
      9

    collected
      servicing fee, 36

    component
      classes, 21

    composite
      class, 21

    constituent
      REMIC,
      27

    corporate
      trust office, 33

    cumulative
      loss test, 15

    current
      interest allocation, 13

    custodial
      accounts for P&I, 62

    custodial
      investment account, 80

    cut-off
      date, 9

    debt
      service reduction, 36

    deficient
      valuation, 36

    definitive
      certificates, 12

    delegated
      servicer, 36

    delinquency
      test, 15

    denominations,
      12

    Depository,
      37

    determination
      date, 37

    

    
      
        
           

        

        
          5

          
            

          

        

        
           

        

      

    

    

    

    discount
      loan, 37

    disqualified
      organization, 88

    distribution
      account, 65

    distribution
      day, 10

    distribution
      day data, 67

    distribution
      day statement, 67

    distribution
      report, 74

    Eligible
      Account, 37

    Eligible
      Investments, 80

    eligible
      substitute mortgage loan, 57

    ERISA,
      37

    ERISA
      Prohibited holder, 88

    ERISA
      Restricted Certificates, 37

    escrow
      accounts, 62

    Events
      of
      Default, 92

    Exchange
      Act, 37

    extraordinary
      event, 37

    FDIC,
      37

    Fitch,
      37

    fraud
      loss, 38

    fraud
      loss limit, 37

    Furnished
      Document, 94

    GIC,
      38

    GNMA,
      38

    group,
      22, 38

    group
      target-rate class percentage, 38

    Guide,
      38

    high-cost
      mortgage loan, 38

    holder,
      38

    hypothetical
      mortgage loan, 38

    impaired
      subordination level, 15

    independent
      accountants, 38

    Indirect
      Participant, 38

    initial,
      38

    initial
      bankruptcy loss limit, 12

    initial
      fraud loss amount, 12

    initial
      special hazard loss limit, 12

    insurance
      premium, 27

    insurance
      proceeds, 38

    insured
      class, 27

    Insurer,
      27

    interest
      allocation, 13

    interest
      allocation carryforward, 14

    interest
      distribution, 17

    interest
      portion of a liquidated loan loss, 39

    interest
      portion of a realized loss, 46

    Internal
      Revenue Code, 39

    investment
      account, 39

    Investment
      Income, 39

    IO
      class,
      39

    IO
      loan,
      39

    IO
      strip,
      39

    last
      scheduled distribution day, 10

    latest
      possible maturity date, 10

    LIBOR,
      21

    LIBOR
      accrual
      period, 21

    LIBOR
      classes,
      21

    liquidated
      loan, 39

    liquidated
      loan loss, 39

    liquidation
      expenses, 39

    liquidation
      proceeds, 39

    loss
      recovery, 40

    lower-tier
      REMIC, 27

    lower-tier
      REMIC
      account,
      30

    master
      servicer, 58

    master
      servicing fee, 40

    master
      servicing fee rate, 40

    material
      breach, 56

    MERS,
      52

    month,
      40

    monthly
      affiliated servicing fee rate, 34

    monthly
      master servicing fee rate, 40

    monthly
      pass-through rate, 43

    monthly
      third-party servicing fee rate, 49

    Moody’s,
      40

    mortgage,
      40

    Mortgage
      Document Custodial Agreement, 51

    Mortgage
      Document Custodian, 51

    mortgage
      documents, 40

    mortgage
      file, 40

    mortgage
      loan, 40

    mortgage
      loan schedule, 40

    mortgage
      note, 40

    Mortgage
      Note Custodian, 40

    mortgage
      note rate, 40

    mortgaged
      property, 40

    mortgagor,
      40

    multiple-pool
      series, 40

    NAS
      classes,
      16

    net
      liquidation proceeds, 40

    net
      Paying Agent advances, 41

    net
      REO
      proceeds, 41

    net
      voluntary advances, 41

    non-accelerated
      senior classes, 16

    nonrecoverable
      advance, 41

    non-subordinated
      losses, 41

    non-supported
      prepayment interest shortfall, 41

    notional
      balance, 13

    officer’s
      certificate, 41

    

    
      
        
           

        

        
          6

          
            

          

        

        
           

        

      

    

    

    

    opinion
      of counsel, 41

    order
      of
      seniority, 41

    order
      of
      subordination, 41

    original
      value, 42

    Originator,
      42

    outstanding,
      42

    overcollateralized,
      25

    PAC
      class,
      17

    Participant,
      43

    pass-through
      rate, 43

    Paying
      Agent, 10

    Paying
      Agent failure, 27

    Paying
      Agent failure advance, 27

    percentage
      interest, 43

    person,
      43

    planned
      amortization class, 17

    planned
      balances, 17

    PO
      class,
      43

    PO
      loan,
      43

    PO
      strip,
      43

    pool,
      43

    pool
      distribution amount, 44

    pool
      I,
      22

    pool
      II,
      22

    POOLING
      REMIC,
      27

    pooling
      REMIC
      account,
      30

    predatory
      lending law, 44

    Predecessor
      Certificates, 44

    premium
      loan, 44

    prepayment
      interest shortfall, 44

    primary
      mortgage insurance certificate, 44

    principal
      allocation, 14

    principal
      balance, 13

    principal
      distribution, 17

    principal
      portion of a liquidated loan loss, 39

    principal
      portion of a realized loss, 46

    principal
      prepayment, 44

    private
      certificates, 44

    Proceeding,
      44

    property
      protection expenses, 44

    Purchaser,
      10

    Qualified
      GIC, 44

    Qualified
      Nominee, 45

    rating
      agency, 10

    ratio-stripped
      IO class, 46

    ratio-stripped
      IO loan, 46

    ratio-stripped
      PO class, 46

    ratio-stripped
      PO loan, 46

    realized
      losses, 46

    record
      date, 46

    reduction
      amount, 25

    regular
      interests, 28

    Regulation
      AB, 83

    reimbursement,
      17

    relevant
      servicer, 46

    Relieved
      interest, 64

    REMIC,
      46

    REMIC
      Provisions, 46

    remittance
      delinquency, 63

    remittances
      on affiliated mortgage loans, 60

    remittances
      on third-party loans, 62

    REO
      loan,
      46

    REO
      proceeds, 46

    REO
      property, 46

    Required
      Amount of Certificates, 46

    reserve
      fund, 27

    residual
      certificates, 9

    residual
      distribution, 17

    residual
      interest, 28

    Responsible
      Officer, 47

    retail
      class,
      27

    retail
      reserve fund,
      27

    S&P,
      47

    scheduled
      monthly loan payment, 47

    scheduled
      principal balance, 47

    scheduled
      principal payments, 47

    scheduled
      servicing fee, 47

    Securities
      Act, 47

    senior
      classes, 9

    senior
      to, 47

    Series
      Terms, 9

    servicing
      account advances, 63

    servicing
      accounts, 61

    Servicing
      Officer, 47

    Similar
      Law, 90

    single
      certificate, 47

    single-pool
      series, 47

    special
      hazard loss, 47

    special
      hazard loss limit, 48

    special
      hazard percentage, 48

    special
      servicer, 58

    special
      servicing agreement, 58

    specially
      serviced mortgage loans, 58

    Standard
      Terms, 9

    startup
      day, 10

    subordinate
      to, 48

    subordinated
      classes, 9

    subordinated
      losses, 48

    subordination
      depletion date, 48

    

    
      
        
           

        

        
          7

          
            

          

        

        
           

        

      

    

    

    

    subordination
      level, 15

    substitution
      adjustment amount, 57

    substitution
      day, 57

    super
      senior classes, 27

    super
      senior support classes, 27

    TAC
      class,
      17

    target
      rate, 12

    targeted
      amortization class, 17

    target-rate
      class, 12

    target-rate
      class percentage, 48

    target-rate
      loan, 48

    target-rate
      strip, 48

    tax
      matters person, 31

    third-party
      mortgage loans, 58

    third-party
      Paying Agent advance, 64

    third-party
      servicer, 58

    third-party
      servicer advance, 64

    third-party
      servicing agreement, 58

    third-party
      servicing fee, 49

    third-party
      servicing fee rate, 49

    Transfer
      Instrument, 49

    Trust,
      9

    Trust
      Fund, 49

    Trustee,
      9

    U.S.
      person, 49

    uncommitted
      cash, 49

    uncommitted
      cash advances, 64

    undercollateralized,
      25

    undersubordination,
      25

    Underwriter,
      10

    unscheduled
      principal payments, 49

    upper-tier
      REMIC, 27

    upper-tier
      REMIC
      account,
      30

    voluntary
      advance, 64

    voting
      interest, 12

    yield
      maintenance agreement, 32

    yield
      maintenance amount, 32

    yield
      maintenance payments, 32

    yield
      maintenance provider, 32

    yield
      maintenance reserve fund, 32

     

    
 

    
      
        
           

        

        
          8

          
            

          

        

        
           

        

      

    

    

    POOLING
      AND SERVICING AGREEMENT 

    September
      1, 2006

    

    PARTIES

    
      	
              ·

            	
              Citicorp
                Mortgage Securities, Inc.,
                a
                Delaware corporation (CMSI)
                

            

    

     

    
      	
              ·

            	
              CitiMortgage,
                Inc.,
                a
                New York corporation (CitiMortgage)

            

    

     

    
      	
              ·

            	
              U.S.
                Bank National Association, a
                national banking association, in its individual capacity and as
                Trustee

            

    

     

    
      	
              ·

            	
              Citibank,
                N.A.,
                a
                national banking association, in its individual capacity and as Paying
                Agent, Certificate Registrar, and Authenticating
                Agent

            

    

     

    BACKGROUND

    In
      the
      regular course of their business, affiliates of CMSI
      originate and acquire mortgage loans. CMSI,
      CitiMortgage
      and the Trustee wish to set forth the terms and conditions under which the
      Trust
      will acquire the mortgage loans listed in exhibit B, certificates will be issued
      to holders evidencing ownership interests in the Trust Fund, and CitiMortgage
      will manage and service the mortgage loans. 

     

    AGREEMENT

    This
      Pooling and Servicing Agreement (this agreement)
      consists of sections 1 through 11 (the Standard
      Terms)
      and
      sections 12 and following (the Series
      Terms).
      The
      Standard Terms follow the Series Terms. If there is a conflict or inconsistency
      between the Standard Terms and the Series Terms, the Series Terms will
      prevail.

     

    SERIES
      TERMS

     

    
      	
              12

            	
              The
                series

            

    

     

    12.1 Establishment

    A
      common
      law trust is established under New York law as of September 1, 2006 (the
cut-off
      date),
      to be
      called the “CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4” (the Trust).
      CMSI
      is the
      settlor of the Trust, and U.S. Bank National Association is the trustee (in
      such
      capacity, the Trustee).

    The
      Trust
      will issue a series of certificates designated as “CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC
      Pass-Through
      Certificates.” The certificates will consist of and be further designated
      as

    (i) 17
      senior
      classes
      of
      certificates individually designated as

    · for
      each
      integer x,
      from 1
      through 12, inclusive, “Senior Class IA-x
      Certificates” (the class
      IA-x certificates
      or
class
      IA-x);

    · “Senior
      Class IIA-1 Certificates” (the class
      IIA-1 certificates
      or
class
      IIA-1);

    · “Senior
      Class IA-PO Certificates” (the class
      IA-PO certificates
      or
class
      IA-PO);

    · “Senior
      Class IA-IO Certificates” (the class
      IA-IO certificates
      or
class
      IA-IO);

    · “Senior
      Class IIA-PO Certificates” (the class
      IIA-PO certificates
      or
class
      IIA-PO);
      and

    · “Senior
      Class IIA-IO Certificates” (the class
      IIA-IO certificates
      or
class
      IIA-IO).

    (ii) six
      subordinated
      classes
      of
      certificates designated, for each integer x,
      from 1
      through 6, inclusive, as “Subordinated Class B-x
      Certificates” (the class
      B-x certificates
      or
class
      B-x)
      (together with the senior classes of certificates, the certificates);
      and

    (iii) three
      residual interests individually designated as

    · “Class
      PR
      Certificates” (the class
      PR certificates),
      

    · “Class
      LR
      Certificates” (the class
      LR certificates),
      and

    · “Class
      R
      Certificates” (the class
      R certificates).
      

    The
      class
      PR, LR and R certificates together constitute the residual
      certificates.
      

    The
      Trustee hereby appoints Citibank, N.A. as Authenticating
      Agent.

    

    
      
        
           

        

        
          9

          
            

          

        

        
           

        

      

    

    

    CMSI,
      with the
      approval of the Trustee, hereby appoints the corporate trust department of
      Citibank, N.A. as Paying
      Agent
      and
Certificate Registrar.

    The
      Mortgage Document Custodian is Citibank (West), FSB. 

    The
      Underwriter
      and the
Purchaser
      for the
      series is HSBC
      Securities (USA)
      Inc.

    The
      certificates will be first executed, authenticated and delivered on September
      28, 2006 (the closing
      date).
      The
      closing date will also be the startup
      day.

    The
      25th
      day of each month (or if the 25th is not a business day, the next succeeding
      business day), beginning in October 2006, will be a distribution
      day.
      The
last
      scheduled distribution day
      for each
      class is specified in the following table. The latest
      possible maturity date
      of each
      class for purposes of section 860G(a)(1) of the Internal Revenue Code and
      Treasury Regulations section 1.860G-1(a)(4)(iii) will be September 25,
      2036.

    The
      nationally recognized statistical rating
      agencies
      for the
      senior classes are Moody’s and Fitch, and for the class IA-1, IA-5 and IA-7
      certificates only, S&P, and the rating agency for classes B-1 through B-5 is
      Fitch.

     

    12.2 General
      terms for classes

    The
      classes will have the following initial principal balances, certificate
      rates,
      and for
      the subordinated classes, initial target-rate class percentages and initial
      subordination levels:

    

     

    
 

    
      	
               

              class

               

            	
               

              initial
                principal (or notional) balance

               

            	
               

              certificate
                rate (per annum)

               

            	
               

              initial
                target-rate class percentage (1)

               

            	
               

              initial
                subordination level (2)

               

            	
               

              last
                scheduled distribution day

               

            
	
              IA-1

               

            	
              $25,495,721.00

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-2

               

            	
              $10,000,000.00
                

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-3

               

            	
              $27,218,000.00
                

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-4

               

            	
              $418,904.00
                

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-5

               

            	
              $104,146,650.00
                

               

            	
              (3)

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-6

               

            	
              $523,350.00
                

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-7

               

            	
              $104,146,650.00
                

              (notional)(4)

               

            	
              (3)

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-8

               

            	
              $49,546,000.00
                

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-9

               

            	
              $66,367,992.00
                

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-10

               

            	
              $2,887,008.00
                

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-11

               

            	
              $1,109,064.00

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-12

               

            	
              $2,407,215.00

               

            	
              6%

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-PO

               

            	
              $193,292.00

               

            	
              0%
                (5)

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IA-IO

               

            	
              $298,067,533.43

              (notional)(6)

               

            	
              (7)

               

            	
              N/A

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IIA-1

               

            	
              $10,010,252.00

               

            	
              5.75%

               

            	
              N/A

               

            	
              N/A

               

            	
              August
                25, 2021

               

            
	
              IIA-PO

               

            	
              $21,118.00

               

            	
              0%
                (5)

               

            	 	 	
              August
                25, 2021

               

            
	
              IIA-IO

               

            	
              $10,163,761.33

               

              (notional)(6)

               

            	
              (7)

               

            	
              N/A

               

            	
              N/A

               

            	
              August
                25, 2021

               

            

    

    

    

    
      
        
           

        

        
          10

          
            

          

        

        
           

        

      

    

    

    

    
      	
              B-1
                (composite)

               

            	
              $6,280,000.00

               

            	
              Blended

               

            	
              2.001342821234%

               

            	
              2.350023853150%

               

            	
              September
                25, 2036

               

            
	
              IB-1
                (component)

               

            	
              $6,070,250.88

               

            	
              6%

               

            	
              2.001250727467%

               

            	
              N/A

               

            	
              N/A

               

            
	
              IIB-1
                (component)

               

            	
              $209,749.12

               

            	
              5.75%

               

            	
              2.004011740785%

               

            	
              N/A

               

            	
              N/A

               

            
	
              B-2
                (composite)

               

            	
              $2,512,000.00

               

            	
              Blended

               

            	
              0.800537128494%

               

            	
              1.550033352451%

               

            	
              September
                25, 2036

               

            
	
              IB-2
                (component)

               

            	
              $2,428,100.35

               

            	
              6%

               

            	
              0.800500290987%

               

            	
              N/A

               

            	
              N/A

               

            
	
              IIB-2
                (component)

               

            	
              $83,899.65

               

            	
              5.75%

               

            	
              0.801604696314%

               

            	
              N/A

               

            	
              N/A

               

            
	
              B-3
                (composite)

               

            	
              $1,727,000.00

               

            	
              Blended

               

            	
              0.550369275839%

               

            	
              1.000039883221%

               

            	
              September
                25, 2036

               

            
	
              IB-3
                (component)

               

            	
              $1,669,318.99

               

            	
              6%

               

            	
              0.550343950054%

               

            	
              N/A

               

            	
              N/A

               

            
	
              IIB-3
                (component)

               

            	
              $57,681.01

               

            	
              5.75%

               

            	
              0.551103228716%

               

            	
              N/A

               

            	
              N/A

               

            
	
              B-4
                (composite)

               

            	
              $1,256,000.00

               

            	
              Blended

               

            	
              0.400268564247%

               

            	
              0.600044632872%

               

            	
              September
                25, 2036

               

            
	
              IB-4
                (component)

               

            	
              $1,214,050.18

               

            	
              6%

               

            	
              0.400250145493%

               

            	
              N/A

               

            	
              N/A

               

            
	
              IIB-4
                (component)

               

            	
              $41,949.82

               

            	
              5.75%

               

            	
              0.400802348157%

               

            	
              N/A

               

            	
              N/A

               

            
	
              B-5
                (composite)

               

            	
              $942,000.00

               

            	
              Blended

               

            	
              0.300201423185%

               

            	
              0.300048195110%

               

            	
              September
                25, 2036

               

            
	
              IB-5
                (component)

               

            	
              $910,537.63

               

            	
              6%

               

            	
              0.300187609120%

               

            	
              N/A

               

            	
              N/A

               

            
	
              IIB-5
                (component)

               

            	
              $31,462.37

               

            	
              5.75%

               

            	
              0.300601761118%

               

            	
              N/A

               

            	
              N/A

               

            
	
              B-6
                (composite)

               

            	
              $942,162.52

               

            	
              Blended

               

            	
              0.300253215898%

               

            	
              N/A

               

            	
              September
                25, 2036

               

            
	
              IB-6
                (component)

               

            	
              $910,694.72

               

            	
              6%

               

            	
              0.300239399449%

               

            	
              N/A

               

            	
              N/A

               

            
	
              IIB-6
                (component)

               

            	
              $31,467.80

               

            	
              5.75%

               

            	
              0.300653622899%

               

            	
              N/A

               

            	
              N/A

               

            

    

     

    ____________

    
      	
              (1)

            	
              The
                initial target-rate class percentages
                are:

            

    

     

    
      	
              senior
                target-rate classes:

               

            	
              95.647027571103%

               

            
	
              group
                I senior target-rate classes:

               

            	
              95.647227877429%

               

            
	
              group
                II senior target-rate classes:

               

            	
              95.641222602010%

               

            
	
              subordinated
                classes:

               

            	
              4.352972428897%

               

            

    

    
      	
              (2)

            	
              The
                initial subordination level for the senior classes is
                4.350000104897%.

            

    

     

    
      	
              (3)

            	
              The
                annual certificate rates for the first LIBOR
                accrual period of September 25, 2006 through October 24, 2006, the
                formulas for the annual certificate rates subsequent to the first
                LIBOR
                accrual period, and the maximum and minimum annual certificate rates
                for
                each LIBOR
                class are as follows:

            

    

     

    
      	 	 	
              Annual
                interest rate

               

            
	
              Class

               

            	
              LIBOR
                accrual period beginning date

               

            	
              For
                first accrual period

               

            	
              Formula
                for subsequent accrual periods

               

            	
              Maximum
                

               

            	
              Minimum
                

               

            
	
              IA-5

               

            	
              25th
                day of month

               

            	
              5.98%

               

            	
              LIBOR
                +
                0.65%*

               

            	
              6%*

               

            	
              0.65%

               

            
	
              IA-7

               

            	
              25th
                day of month

               

            	
              0.02%

               

            	
              5.35%
                -
                LIBOR

               

            	
              5.35%

               

            	
              0%

               

            

    

     

    
      	 	
              *

            	
              Class
                IA-5 will benefit from a yield maintenance agreement with The Bank
                of New
                York that may provide additional payments to holders of class IA-5
                certificates for distribution days for which LIBOR
                is
                greater than 5.35%. 

            

    

     

    
      	
              (4)

            	
              The
                notional balance of class IA-7 on any distribution day will equal
                the
                principal balance of class IA-5 on that distribution
                day.

            

    

     

    
      	
              (5)

            	
              Classes
                IA-PO and IIA-PO are ratio-stripped PO classes and do not bear
                interest.

            

    

     

    
      	
              (6)

            	
              After
                the first distribution day, ratio-stripped IO classes IA-IO and IIA-IIO
                will have a notional balance on any distribution day equal to the
                aggregate scheduled principal balance of the premium loans of the
                related
                pool on the last day of the preceding
                month.

            

    

     

    

    
      
        
           

        

        
          11

          
            

          

        

        
           

        

      

    

    

    (7)
      Each
      ratio-stripped IO class will accrue interest on its notional balance at an
      annual rate equal to the weighted average net loan rate of the premium loans
      in
      its related pool minus the target rate for that pool. The initial annual
      interest rates for the ratio-stripped IO classes are expected to
      be:

     

    
      	
              Class
                IA-IO

               

            	
              0.6242223174%

               

            
	
              Class
                IIA-IO

               

            	
              0.5115431514%

               

            

    

     

     

    12.3 Target
      rate

    The
      per
      annum target
      rates
      for the
      pools are

    pool
      I: 6%

    pool
      II: 5.75%

    Each
      class other than any ratio-stripped IO or ratio-stripped PO class is a
target-rate
      class.

     

    12.4 Ratio-stripped
      IO and PO classes

    Each
      of
      classes IA-IO and IIA-IO is a ratio-stripped IO class, and each of classes
      IA-PO
      and IIA-PO is a ratio-stripped IO class. 

     

    12.5 Loss
      limits

    There
      is
      no initial
      special hazard loss limit,
      initial
      bankruptcy loss limit,
      or
initial
      fraud loss amount.

     

    12.6 Denominations

    The
      denominations
      of

    · the
      senior class certificates and the class B-1 through B-3 certificates are initial
      principal (or, for any IO classes, notional) balances of $1,000 and any whole
      dollar amount above $1,000,

    · the
      class
      B-4, B-5 and B-6 certificates are $100,000 initial principal balance and any
      larger integral multiple of $1,000, and

    · the
      residual certificates are percentage interests summing to 100%.

    If
      the
      initial principal or notional balance of a class is not a permitted denomination
      for a certificate of that class, one certificate of the class may be issued
      in a
      different denomination.

     

    12.7 The
      mortgage loans

    The
      mortgage loans in the Trust Fund are identified on the mortgage loan schedule.
      The mortgage loans in 

    · pool
      I
      will consist primarily of 20- to 30-year fixed-rate conventional one- to
      four-family mortgage loans, and

    · pool
      II
      will consist primarily of 10- to 15-year fixed-rate conventional one- to
      four-family mortgage loans. 

     

    12.8 Right
      to repurchase

    CMSI
      cannot
      exercise its right to repurchase the mortgage loans pursuant to section 9.1(a)
      of the Standard Terms unless

    · the
      aggregate scheduled principal balance of the mortgage loans is less than
      $31,400,372.86 at the time of repurchase, and

    · if
      there
      is an insured class outstanding and the exercise of such repurchase right would
      result in a draw under any certificate insurance policy, the Insurer has
      previously consented.

     

    12.9 Book-entry
      and definitive certificates

    All
      senior class certificates (other than the ratio-stripped IO certificates) and
      the class B-1 through B-3 certificates will be issued as book-entry
      certificates.
      Book-entry certificates for a class or a group of classes will be represented
      by
      one or more certificates issued in the name of a depository. The ratio-stripped
      IO certificates, the class B-4 through B-6 certificates, and the residual
      certificates will be issued in fully registered certificated form (definitive
      certificates).

     

    12.10 Voting
      interests 

    Each
      IO
      class will have a 1% voting
      interest.
      The
      remaining voting interest will be allocated to the other classes in proportion
      to their principal balances. The voting interest of any class will be allocated
      among

    

    
      
        
           

        

        
          12

          
            

          

        

        
           

        

      

    

    

    the
      certificates of the class in proportion to the certificates’ principal or
      notional balances, except that an Insurer will be entitled to the voting
      interest of an insured class for as long as the insured class is outstanding
      and
      the Insurer is not in default..

     

    12.11 Cash
      deposit

    No
      cash
      will be deposited into the certificate account on the closing date.

     

    
      	
              13

            	
              Principal
                balances

            

    

     

    13.1 Class
      balances

    Each
      class that is not an IO class will have a principal
      balance,
      and
      each IO class will have a notional
      balance.
      The
      principal or notional balance of multiple classes (e.g.,
      the
      senior classes) is the aggregate of the principal or notional balances of those
      classes.

    The
      initial principal or notional balance for each class is stated in “The series -
      General terms for classes” above. The principal balance of each class that is
      not an IO class will be adjusted on each distribution day, as described in
      “Adjustments to class balances” below.

    The
      notional balance of a ratio-stripped IO class for any distribution day after
      the
      initial distribution day will equal the aggregate scheduled principal balance
      of
      the premium loans of the related pool on the last day of the preceding
      month.

    The
      notional balance of each IO class that is not a ratio-stripped IO class will
      be
      adjusted on each distribution day as described in “The series - General terms
      for classes” above.

     

    13.2 Certificate
      balances

    The
      sum
      of the initial principal or notional balances stated on the certificates of
      each
      class will equal the initial principal or notional balance of the
      class.

    Except
      as
      may be provided in “Retail classes” below, the principal or notional balance of
      each certificate will equal its proportional share, based on the initial
      principal or notional balances stated on the certificates of the class, of
      the
      principal balance or notional balance of the class to which the certificate
      belongs.

     

    
      	
              14

            	
              Allocations

            

    

     

    14.1 Interest
      allocations

    Beginning
      on the cut-off date, each class (other than any PO class) will accrue interest
      for each month on its principal or notional balance at the certificate rate
      for
      the class stated in “The series - General terms for classes” above. In
      calculating accrued interest,

    · a
      class’s
      principal or notional balance on the last day of a month will be considered
      to
      be the class’s principal or notional balance on every day of the month,
      and

    · interest
      for a month will be calculated at 1/12 of the certificate rate, regardless
      of
      the number of days in the month.

    Example:
      Suppose that on January 1, a class has a principal balance of $1,020,000 and
      a
      certificate rate of 6% per annum. On the January distribution day, the class’s
      principal balance is reduced by $20,000. As a result, the principal balance
      of
      the class on January 31 is $1 million. Then the interest accrued for the class
      during January (which is paid on the February distribution
      day) is 1/12 of 6% of $1 million = $5,000; that the principal balance of the
      class was greater than $1 million before the January distribution day, and
      that
      January has 31 days, are irrelevant.

    A
      class’s
interest
      allocation
      for a
      distribution day is the sum of

    · the
      class’s current
      interest allocation
      for the
      distribution day, consisting of the class’s accrued interest for the preceding
      month minus
      the
      class’s proportional share, based

    

    
      
        
           

        

        
          13

          
            

          

        

        
           

        

      

    

    

    on
      accrued interest, of (1) any non-supported prepayment interest shortfall,
      and (2) the interest portion of any non-subordinated losses, for the
      preceding month,

    · plus
      any
      excess of the class’s
      interest allocation for the preceding distribution day over the interest
      distributed to the class on that preceding distribution day (the interest
      allocation carryforward
      from
      that distribution day). (If the class is an insured class, for purposes of
      calculating allocations and distributions to the class, the interest allocation
      carryforward from a distribution day will be reduced by any payments to the
      class from the Insurer relating to the interest allocation carryforward, but
      will not be so reduced for purposes of effecting the Insurer’s subrogation
      rights relative to the interest portion of any insured payment.)

     

    14.2 Principal
      allocations

    The
      principal
      allocation
      for a
      distribution day is:

    (a)
      for any
      ratio-stripped PO class, the sum for that distribution day of scheduled and
      unscheduled principal payments on its PO strip for that distribution
      day.

    (b)
      for the
      senior target-rate classes collectively, the
      sum for
      that
      distribution day of

    · the
      target-rate class percentage for the senior target-rate classes of scheduled
      principal payments on the target-rate strip, and

    · all
      unscheduled principal payments on the target-rate strip allocated to the senior
      target-rate classes pursuant to “ - Unscheduled principal” below. 

    The
      principal allocation for the senior target-rate classes will be allocated among
      the individual senior target-rate classes pursuant to “Allocations among the
      senior classes” below.

    (c)
      for each
      subordinated class,
      

    · the
      class’s target-rate class percentage of scheduled principal payments on the
      target-rate strip for that distribution day,

    · plus
      the
      class’s proportional share, based on the principal balances of the subordinated
      classes, of unscheduled principal payments on the target-rate strip for that
      distribution day that are not allocated to the senior target-rate classes
      pursuant to the preceding paragraph (b),

    · plus
      or
minus
      any
      amounts that are reallocated to or from the class pursuant to “- Maintenance of
      subordination” below. 

     

    14.3 Unscheduled
      principal

    For
      each
      distribution day, the following percentage of unscheduled principal payments
      on
      the target-rate strip received during the preceding month will be allocated
      to
      the senior target-rate classes:

    · 100%
      if
      the target-rate class percentage for all the senior target-rate classes on
      the
      distribution day exceeds the initial target-rate class percentage for all the
      senior target-rate classes.

    · otherwise,
      and subject to the following proviso, the sum of (1) the target-rate class
      percentage for the senior target-rate classes, plus (2) the following
      percentage of the target-rate class percentage for the subordinated
      classes:

    
      	
               

              distribution
                days

            	
               

              percentage

            
	
              1through60

            	
              100%

            
	
              61through72

            	
              70%

            
	
              73through84

            	
              60%

            
	
              85through96

            	
              40%

            
	
              97through108

            	
              20%

            
	
              109
                and after

               

            	
              0%

               

            

    

    provided,
      that

    · if
      the
      distribution day is one on which the percentage shown in the preceding table
      is
      to be reduced - that is, the 61st, 73rd, 85th 97th or 109th distribution day
      -
      and either the cumulative loss test or the delinquency

    

    
      
        
           

        

        
          14

          
            

          

        

        
           

        

      

    

    

    test
      described below are not satisfied, then the percentage will not be reduced
      on
      that distribution day or on any subsequent distribution day until both the
      cumulative loss and delinquency tests are passed, and

    · if
      the
      cumulative loss test is not satisfied for a distribution day, the percentage
      of
      unscheduled principal payments allocated to the senior target-rate classes
      will
      be the greater of the percentage of unscheduled principal payments allocated
      to
      the senior target-rate classes for that distribution day calculated in
      accordance with the preceding rules of this section, or the percentage of
      unscheduled principal payments allocated to the senior target-rate classes
      for
      the preceding distribution day.

    The
      cumulative
      loss test
      is
      satisfied for a distribution day if cumulative realized losses through that
      distribution day do not exceed the following percentages of the initial
      principal balance of the subordinated classes: 

    
      	
               

              distribution
                days 

            	
               

              percentage
                of initial principal balance of subordinated
                classes

            
	
              61 through72

            	
              30%

            
	
              73 through84

            	
              35%

            
	
              85 through96

            	
              40%

            
	
              97 through108

            	
              45%

            
	
              109
                and after

            	
              50%

            

    

     

    The
      delinquency
      test
      is
      satisfied for a distribution day if CitiMortgage certifies to the Trustee that
      the average of the aggregate scheduled principal balance of mortgage loans
      delinquent 60 days or more (including, for this purpose, mortgage loans in
      foreclosure and real estate owned by the Trust as a result of mortgagor default)
      for that distribution day and the preceding five distribution days is either
      (1) less than 50% of the average of the principal balance of the
      subordinated classes for those distribution days, or (2) less than 2% of
      the average scheduled principal balance of all of the mortgage loans for those
      distribution days.

    If
      there
      are composite and component subordinated classes, only the composite
      subordinated classes are considered in the cumulative loss and delinquency
      tests.

     

    14.4 Maintenance
      of subordination

    The
      subordination
      level
      for a
      class (other than a ratio-stripped IO class) is the sum of the class percentages
      of all classes that are subordinate to that class. If a class’s subordination
      level on the day before a distribution day is less than the class’s initial
      subordination level, then the class will have an impaired
      subordination level
      on that
      distribution day.

    If
      a
      subordinated class has an impaired subordination level on a distribution day,
      then all principal originally allocated to the subordinated classes will be
      allocated to the most senior of the subordinated classes with an impaired
      subordination level and to those subordinated classes that are senior to the
      impaired class, in proportion to their principal balances, up to those
      classes’
      principal balances, and any remainder will be allocated to the remaining
      subordinated classes, in order of seniority, up to those classes’ principal
      balances. 

    Example:
      Suppose that on a distribution day, (a) each of classes B-1 through B-6 had
      a principal balance on the preceding day of $1,000, (b) the aggregate
      principal allocation to the subordinated
      classes is $3,120, and (c) class B-2 has an impaired subordination level.
      Then on that distribution day

    (1) the
      entire amount allocated to the subordinated classes will be allocated to classes
      B-1 and B-2, in proportion to their principal balances, up to their principal
      balances, and

    (2) $1,000
      of the remaining $1,120 will be allocated to class B-3, reducing its principal
      balance to zero, and 

    

    
      
        
           

        

        
          15

          
            

          

        

        
           

        

      

    

    

    (3)
      the remaining $120 will be allocated to class B-4.

     

    
      	
              15

            	
              Allocations
                among the senior classes

            

    

     

    15.1 Order
      of allocation among senior target-rate classes

    On
      each
      distribution day before the subordination depletion date, the aggregate
      scheduled and unscheduled principal allocated to the senior target-rate classes
      of a group will be allocated to the individual senior target-rate classes of
      that group as follows:

    Group
      I:
      Principal allocated to the group I senior target-rate classes from the pool
      I
      target-rate strip will be allocated sequentially as follows:

    First,
      to
      classes IA-1, IA-11 and IA-12, the amounts determined under ‘‘NAS
      classes’’ below.

    Second,
      to
      classes IA-2 through IA-4 and IA-8 through IA-10 sequentially as follows, until
      their aggregate principal balance is reduced to their aggregate planned balance
      for that distribution day as shown in “—PAC
      classes”
below:

    
      	 	
              A.

            	
              Concurrently
                to classes IA-2, IA-9 and IA-10, in proportion to their principal
                balances, until their principal balances are reduced to
                zero.

            

    

    
      	 	
              B.

            	
              Sequentially
                to classes IA-8, IA-3 and IA-4, in that order, until their principal
                balances are reduced to zero.

            

    

    Third,
      sequentially to classes IA-5 and IA-6, until their principal balances are
      reduced to zero.

    Fourth,
      to
      classes IA-2 through IA-4 and IA-8 through IA-10 sequentially as follows,
      without regard to their aggregate planned balance:

    
      	 	
              A.

            	
              Concurrently
                to classes IA-2, IA-9 and IA-10, in proportion to their principal
                balances, until their principal balances are reduced to zero.
                

            

    

    
      	 	
              B.

            	
              Sequentially
                to classes IA-8, IA-3 and IA-4, in that order, until their principal
                balances are reduced to zero.

            

    

    Fifth,
      concurrently to classes IA-1, IA-11 and IA-12, in proportion to their principal
      balances, until their principal balances are reduced to zero.

    Group
      II:
      Principal allocated to the group II senior target-rate classes from the pool
      II
      target-rate strip will be allocated to class IIA-1 until its principal balance
      is reduced to zero. 

    Beginning
      on the subordination depletion date, the priorities stated above will cease
      to
      be in effect, and the principal allocation for the senior target-rate classes
      of
      each group will be allocated to the senior target-rate classes of the group
      in
      proportion to their principal balances on the preceding day.

     

    15.2 NAS
      classes

    Classes
      IA-1, IA-11 and IA-12 are non-accelerated
      senior,
      or
NAS
      classes.

    For
      the
      first 60 distribution days, the principal allocation for a NAS
      class
      will be zero. For distribution day 61 and after, the principal allocation for
      each NAS
      class
      will equal

    · its
      proportionate share, based on the principal balances of the group’s target-rate
      classes, of scheduled principal payments on the related pool’s target-rate strip
      allocated to the group’s target-rate classes for that distribution day,
      plus

    · the
      following percentage of its proportionate share, based on principal balances
      of
      the group‘s target-rate classes, of unscheduled principal payments on the
      related pool’s target-rate strip allocated to

    

    
      
        
           

        

        
          16

          
            

          

        

        
           

        

      

    

    

    the
      group’s target-rate classes for that distribution day:

    
      	
               

              distribution
                day

            	
               

              percentage

            
	
              0
                -
                60

            	
              0%

            
	
              61
                - 72

            	
              30%

            
	
              73
                - 84

            	
              40%

            
	
              85
                - 96

            	
              60%

            
	
              97
                - 108

            	
              80%

            
	
              109
                and after

               

            	
              100%

            

    

     

    15.3 PAC
      and TAC
      classes

    Classes
      IA-2 through IA-4, and IA-8 through IA-10, are planned
      amortization
      (or
PAC) classes.
      The
      aggregate planned
      balances
      for the
PAC
      classes
      are given in the PAC
      Schedule. 

    There
      are
      no targeted
      amortization
      (or
TAC) classes.
      

     

    
      	
              16

            	
              Distributions

            

    

     

    16.1 Types
      of distributions

    Each
      distribution will be either an interest
      distribution,
      a
principal
      distribution,
      a
reimbursement,
      or a
residual
      distribution,
      as
      described in “- Distribution priorities” below.

     

    16.2 Accrual
      and accrual directed classes

    Class
      IA-6 is an accrual
      class.
      Its
accrual
      directed class
      is class
      IA-5. 

    On
      each
      distribution day before its accrual termination day, the interest distribution
      for class IA-6 will be redirected to class IA-5 until its principal balance
      is
      reduced to zero.

    If
      on a
      distribution day before an accrual class’s accrual termination day, the accrual
      class’s interest distribution exceeds the aggregate principal balances of its
      accrual directed classes, then 

    · only
      that
      portion of the accrual class’s interest distribution that equals the aggregate
      principal balances of its accrual directed classes will be redirected to the
      accrual directed classes, and

    · the
      excess will be distributed as principal to the accrual class itself.

    If
      interest distributions on multiple accrual classes are directed to the same
      accrual directed classes, then on the last distribution day before those accrual
      classes’ accrual termination day, the redirected portion of the interest
      distribution for each such accrual class will be in proportion to the principal
      balances of such accrual classes on the day before the distribution
      day.

     

    16.3 Distribution
      priorities

    Subject
      to section 18, “loss recoveries,” on each distribution day, the pool
      distribution amount will be first distributed to any Insurer to pay any
      insurance premium, and then to the outstanding classes in the following priority
      (and, if there are any insured classes, the insured payment and amounts
      withdrawn from the reserve fund will be applied to make payments to the insured
      class certificates as provided in “Insured classes” below):

    (1) To
      each senior class, first,
      its
      current interest allocation for that distribution day, and second
      its
      interest allocation carryforward from the preceding distribution day,
except
      that an
      accrual class’s
      interest distributions may be redirected as described in “-
      Accrual
      and accrual directed classes”
      above.
      Distributions of current allocations among the senior classes will be in
      proportion to current interest allocations for, and distributions of interest
      allocation carryforwards will be in proportion to interest allocation
      carryforwards to, that distribution day.

    (2) (a) To
      any ratio-stripped PO class, principal up to its principal allocation for that
      distribution day, and (b) to the senior

    

    
      
        
           

        

        
          17

          
            

          

        

        
           

        

      

    

    

    target-rate
      classes, principal up to their aggregate principal allocation for that
      distribution day, to be distributed to the senior target-rate classes in the
      priorities described in “Allocations among the senior classes - Order of
      allocation among senior target-rate classes” above. 

    (3) To
      each subordinated class, in order of seniority, first,
      interest up to its interest allocation for that distribution day, and
second,
      principal up to its principal allocation for that distribution day,
      except
      that a
      subordinated class’s principal distribution may be used to reimburse a
      ratio-stripped PO class, as described in the following paragraph.

    (4) Principal
      distributed to the subordinated classes under the preceding paragraph will
      be
      used to reimburse a ratio-stripped PO class up to the amount of (a) any
      realized subordinated losses previously allocated to the ratio-stripped PO
      class, and (b) any reduction to the ratio-stripped PO class’s principal
      balance to reflect the excess of (i) the aggregate principal allocations to
      the ratio-stripped PO class over (ii) the aggregate principal distributions
      to the ratio-stripped classes, as described in “Adjustments to class balances”
below, to the extent that such losses and reductions were not previously
      reimbursed under this paragraph (4) or “Loss recoveries” below. Such
      reimbursements will be taken from distributions to the subordinated classes
      in
      order of subordination. 

    (5) To
      each class, in order of seniority, a reimbursement of any reduction to the
      classes’ principal balances to reflect the excess of (a) the aggregate
      principal allocations to the classes over (b) the aggregate principal
      distributions to the classes, as described in “Adjustments to class balances”
below, to the extent such reductions were not previously reimbursed. Classes
      with equal seniority will share in the reimbursement in proportion to such
      unreimbursed reductions.

    (6) To
      the residual certificates, a residual distribution of the remaining pool
      distribution amount.

    A
      class
      that is no longer outstanding cannot receive a distribution.

    Notwithstanding
      anything to the contrary in this agreement, no distribution will be made to
      a
      subordinated class on a distribution day if on that distribution day the
      principal balance of a more senior class would be reduced by any part of the
      principal portion of a realized subordinated loss.

     

    16.4 Distributions
      to certificate holders

    On
      each
      distribution day, distributions to a class will be distributed to the holders
      of
      the certificates of the class in proportion to the principal or notional
      balances of their certificates.

     

    16.5 Final
      distribution on the residual certificates 

    Upon
      termination of the Trust in accordance with section 9.1, “Termination upon
      repurchase by CMSI
      or
      liquidation of all mortgage loans,” any class PR certificates, and if there are
      no class PR certificates, the LR certificates will receive all amounts remaining
      in the certificate account and in any retail reserve fund after all required
      distributions on the certificates, and any required distributions to any
      Insurer, have been made.

     

    16.6 Wire
      transfer eligibility

    The
      minimum number of single certificates eligible for wire transfer on each
      distribution day, for the certificates, is 1,000 (representing a $1,000,000
      initial principal balance or initial notional balance) and, for

    

    
      
        
           

        

        
          18

          
            

          

        

        
           

        

      

    

    

    the
      residual certificates, a 100% percentage interest.

     

    
      	
              17

            	
              Adjustments
                to class balances

            

    

    On
      each
      distribution day, the principal balance of each class that is not an IO class
      will be adjusted, in the following order, as follows:

    (1) The
      principal balance of any ratio-stripped PO class will be reduced by realized
      losses on its PO strip for the preceding month. 

    (2) The
      aggregate principal balance of the target-rate classes will be reduced by the
      principal portion of realized non-subordinated losses on the target-rate strip
      for the preceding month. The reduction will first be allocated between the
      subordinated classes, collectively, and the senior target-rate classes,
      collectively, in proportion to aggregate principal balances. The reduction
      for
      the subordinated classes will be allocated to the individual subordinated
      classes in proportion to their principal balances. The reduction for the senior
      target-rate classes will be allocated to the individual senior target-rate
      classes in proportion to their principal balances, except
      that the
      principal balance of an accrual class will be deemed to be the lesser of its
      principal balance or its initial principal balance.

    (3) To
      the extent that on the distribution day an interest distribution to an accrual
      class is redirected to an accrual directed class, the principal balance of
      the
      accrual class will be increased. 

    (4) The
      principal balance of each class will be reduced by its principal distributions
      for that distribution day, including 

    (a) principal
      distributions to an accrual directed class that are redirected from interest
      distributions to an accrual class, and

    (b) principal
      distributions to a subordinated class, even if part or all of those principal
      distributions are, pursuant to section 16.3(4), used to reimburse a
      ratio-stripped PO class. 

    However,
      any portion of an accrual class’s interest distribution that, on the
      distribution day before the class’s accrual termination day, is distributed as
      principal to the accrual class itself, will neither increase nor decrease the
      class’s principal balance.

    (5) The
      aggregate principal balance of the target-rate classes will be reduced by the
      principal portion of realized subordinated losses on the target-rate strip
      for
      the preceding month. The reductions will be applied first to the subordinated
      classes in order of subordination, in each case until the principal balance
      of
      the class is reduced to zero. If the realized subordinated losses exceed the
      principal balance of the subordinated classes, the principal balance of the
      senior target-rate classes will be reduced by the amount of the excess. The
      excess will be allocated among the senior target-rate classes in proportion
      to
      their principal balances, except
      that for
      this allocation, the principal balance of an accrual class will be deemed to
      be
      the lesser of its principal balance or its initial principal
      balance.

    (6) The
      principal balance of any ratio-stripped PO class will be reduced by the excess
      of (a) the class’s principal allocation over (b) the class’s principal
      distribution for that distribution day.

    (7) The
      principal balance of each target-rate class will be reduced, in order of
      subordination, in an aggregate amount equal to the excess of (a) the
      aggregate principal allocations to the target-rate classes over (b) the
      aggregate principal

    

    
      
        
           

        

        
          19

          
            

          

        

        
           

        

      

    

    

    distributions
      to the target-rate classes. Classes of equal seniority will share in such
      reduction in proportion to the amounts by which the principal allocation to
      each
      such class exceeded its principal distribution. 

    For
      purposes of the preceding paragraphs (1) through (7),

    · the
      principal portion of a debt service reduction will not be considered a realized
      loss, and

    · references
      to the class principal balances in any paragraph mean the principal balances
      after the adjustments required by the preceding numbered
      paragraphs.

    Where
      the
      principal balance of a class is reduced due to a realized loss under the
      preceding paragraphs (1), (2) or (5), the loss will be said to be allocated
      to
      the class (an allocated
      loss)
      to the
      extent of the reduction. 

     

    
      	
              18

            	
              Loss
                recoveries

            

    

    The
      following rules for loss recoveries supersede any conflicting rules in
“Distributions” or “Adjustments to class balances” above.

    On
      each
      distribution day, the amount of any loss recovery for the preceding month will
      be distributed as follows:

    First,
      to each
      senior class to the extent of and in proportion to its aggregate realized losses
      for that and all preceding months that were not previously reimbursed under
      this
      paragraph or, for a ratio-stripped PO class, paragraph 4 of “Distributions —
Distribution priorities” above.

    Second,
      to the
      target-rate classes in the same manner as a distribution of unscheduled
      principal.

    Distributions
      made pursuant to paragraph First
      above
      will not result in any adjustments to class balances, but distributions made
      pursuant to paragraph Second
      above
      will result in the normal adjustments to the class balances described in
      paragraph 4 of “Adjustments to class balances” above.

    The
      principal balances of the subordinated classes will be increased in order of
      seniority to the extent of their aggregate realized losses for that and all
      preceding months that were not previously reimbursed under this paragraph,
      up to
      an aggregate amount for all subordinated classes equal to the loss recovery
      less
      the amounts distributed to the senior classes under paragraph First
      above.

    Example:
      In May, there is a $1,000 of loss recovery. On the June distribution day, prior
      to any distributions or adjustments, the senior classes have aggregate
      unreimbursed losses of $100 and the subordinated classes have aggregate
      unreimbursed losses of $700. Then on the June distribution day,

    1 $100
      of the loss recovery will be distributed to the senior classes to reimburse
      them
      for previously allocated losses, but the distribution will not reduce the
      principal balances of the senior classes.

    2 The
      remaining $900 of the loss recovery will be distributed to the target-rate
      classes in the same manner as unscheduled principal, and class balances will
      be
      reduced by the amount of the distributions.

    3 The
      principal balances of the subordinated classes will be increased by the
      remaining $900. (The increase may be less than $900 if any of the subordinated
      classes are no longer outstanding.)

    If
      expenses on the liquidated loans for any month exceed the amounts recovered
      on
      the liquidated loans for the month, the excess will be treated as a realized
      loss on the mortgage loans.

     

    
      	
              19

            	
              Additional
                structuring features

            

    

    The
      preceding provisions for allocations and distributions, and for adjustments
      to
      class balances, are subject to the following

    

    
      
        
           

        

        
          20

          
            

          

        

        
           

        

      

    

    

    sections
      on LIBOR
      classes,
      composite and component classes, multiple-pool series, retail classes, and
      insured classes.

     

    
      	
              20

            	
              LIBOR
                classes

            

    

    Classes
      IA-5 and IA-7 are LIBOR
      classes.

    Each
      LIBOR
      class
      will have a monthly LIBOR
      accrual period
      from the
      day of the month indicated in the footnotes to the table in “The Series -
      General terms for classes” above through the day preceding the first day of the
      next LIBOR
      accrual
      period. The first LIBOR
      accrual
      period for a class will be the latest possible LIBOR
      accrual
      period that ends before the first distribution day.

    Example:
      The LIBOR
      accrual period for a LIBOR
      class begins on the 25th day of the month, and the first distribution day is
      February 25, 200x. Then the first LIBOR
      accrual period for the class begins on January 25, 200x and runs through
      February 24, 200x, the second LIBOR
      accrual period begins on February 25, 200x and runs through March 24, 200x,
      and
      so forth. 

    A
      LIBOR
      class
      will not accrue interest for any period before its first LIBOR
      accrual
      period. The interest rate for each LIBOR
      class is
      stated in “The series - General terms for classes” above.

    CitiMortgage
      will determine LIBOR
      for each
LIBOR
      accrual
      period (after the first LIBOR
      accrual
      period) on the second business day before the beginning of each LIBOR
      accrual
      period as follows:

    · LIBOR
      for any
      determination day will be the British Bankers Association LIBOR
      rate for
      US dollar deposits with a one-month maturity at 11AM,
      London
      time on that day, as such rate appears on Telerate Page 3750, Bloomberg Page
      BBAM,
      or
      another page of these or any other financial reporting service in general use
      in
      the financial services industry, rounded upward, if necessary, to the nearest
      multiple of 1/16 of 1%.
      

    · If
      no
      rate is so reported on that day, CitiMortgage will determine LIBOR
      on the
      basis of the rates on that day at approximately 11AM,
      London
      time, at which deposits in U.S. Dollars with a maturity of one month in a
      principal amount of not less than U.S. $1 million and representative for a
      single transaction in that market at that time, are offered to prime banks
      in
      the London interbank market for at least four major banks in the London
      interbank market selected by CitiMortgage. CitiMortgage will request the
      principal London office of each such bank to provide a quotation of its rate.
      If
      at least two such quotations are provided, LIBOR
      will be
      the arithmetic mean of those quotations. 

    · If
      fewer
      than two quotations are provided, LIBOR
      will be
      the arithmetic mean of the rates quoted at approximately 11AM,
      New
      York time, on that day by three major banks in New York City selected by
      CitiMortgage for loans in U.S. Dollars to leading European banks having a
      maturity of one month in a principal amount of not less than U.S. $1 million
      that is representative for a single transaction in such market at such time.
      If
      the banks selected by CitiMortgage are not quoting such rates, LIBOR
      will be
LIBOR
      for the
      preceding LIBOR
      accrual
      period.

    CitiMortgage
      may designate an affiliate or a third party to determine LIBOR.

     

    
      	
              21

            	
              Composite
                and component classes

            

    

    The
      composite
      classes
      of the
      series, and each composite class’s component
      classes
      are
      shown in the table in “The series - General terms for classes”
above.

    

    
      
        
           

        

        
          21

          
            

          

        

        
           

        

      

    

    

    Each
      composite class is comprised of two or more component classes. Certificates
      are
      only issued for composite classes. Component classes cannot be severed from
      their composite classes, and cannot be separately transferred. Component classes
      are, however, considered classes for all purposes of the preceding sections
      on
      allocations and distributions except
      that all
      distributions to the component classes of a composite class will become
      distributions to the composite class. A composite class is not considered a
      class for purposes of allocations and distributions, but instead receives all
      the distributions made to any of its component classes. Voting is by composite,
      not component, classes.

    In
      a
      multiple-pool series, each subordinated class is a composite class formed of
      two
      or more component classes. Unless otherwise specified, references to a
“subordinated class” mean the composite class.

     

    
      	
              22

            	
              Multiple-pool
                series

            

    

    This
      is a
      multiple-pool series. The mortgage loans of this series are divided into two
      pools. Pool
      I
      consists
      of the mortgage loans described in exhibit B-1, and Pool
      II
      consists
      of the mortgage loans described in exhibit B-2. 

    Each
      class of this series (other than certain composite classes) belongs to a
group
      of
      classes related to a specific pool. The designation of each class in a group
      bears the roman numeral prefix of its related pool, and the group is referred
      to
      by that prefix. 

    Example:
      Classes related to pool I bear the prefix “I,” as IA-1, IB-1, etc., and are
      referred to collectively as “group I.”

    With
      exceptions described below, the classes of each group are treated like a
      separate series, with allocations to the classes of the group being based solely
      on payments on the related pool. Any ratio-stripping will be done on a pool
      basis, so that there will be separate PO, IO and target-rate strips for each
      pool, with the related group having its own target-rate, and ratio-stripped
      IO
      and PO, classes. 

    The
      subordinated classes of each group will be component classes. A ratio-stripped
      IO or PO class of a group will only be a component class if so designated in
      “The series - General terms for classes” above.

     

    22.1 Adjustment
      of subordinated component class principal balances

    On
      each
      distribution day, the aggregate amount of any 

    · realized
      subordinated losses on the mortgage loans in a pool, or

    · excess
      of
      the aggregate principal allocations to the related group’s target-rate classes
      over the aggregate principal distributions to those classes, 

    that,
      in
      accordance with “Adjustments to class balances” above, would reduce the
      principal balances of the group’s subordinated component classes in order of
      subordination if the pool and the related groups were considered a separate
      series, will instead reduce

    · the
      principal balances of the subordinated composite classes in order of
      subordination, and 

    · the
      aggregate principal balance of the group’s subordinated component
      classes,

    by
      that
      amount.

    Such
      reduction in the aggregate principal balance of a group’s subordinated component
      classes will result in adjustments to the principal balance of the subordinated
      component classes of each group so the ratio of the principal balances of the
      component classes from each group will be the same for each subordinated
      composite class.

    

    
      
        
           

        

        
          22

          
            

          

        

        
           

        

      

    

    

    Example:
      Assume subordinated composite classes B-1 through B-6, each with a principal
      balance of $1,000. There are two groups, I and II, and the aggregate principal
      balance of each group’s subordinated component classes is $3,000. Then for each
      subordinated composite class, the ratio of the principal balance of its group
      I
      component class to the principal balance of its group II component class must
      be
      1 to 1. Consequently, both the group I and the group II component class of
      each
      subordinated composite class will have a principal balance of $500.

    Now
      assume a $750 subordinated loss in pool I. Then

    · the
      principal balance of class B-6 will be reduced by $750, to $250, which will
      reduce the aggregate principal balance of the subordinated composite classes
      to
      $5,250,

    · the
      aggregate principal balance of the group I subordinated component classes will
      be reduced by $750, to $2,250, while the aggregate principal balance of the
      group II subordinated component classes will remain at $3,000;

    · the
      ratio of the aggregate principal balance of the group I subordinated component
      classes to the aggregate principal balance of the group II subordinated
      component classes will be $2,250 to $3,000, or 3 to 4;

    · for
      classes B-1 through B-5, the principal balance of the composite class will
      remain at $1,000, but the principal balance of its group I component class
      will
      be approximately $428.57, and the principal balance of its group II component
      class will be approximately $571.43 (a ratio of 3 to 4); and

    · class
      B-6’s principal balance of $250 will be comprised of a group I component class
      with a principal balance of approximately $107.14, and a group II component
      class with a principal balance of approximately $142.86 (a ratio of 3 to
      4).

    If
      subordinated losses on a mortgage pool for a distribution day exceed the
      aggregate principal balance of the subordinated component classes of the related
      group, the aggregate principal balance of such component classes will be reduced
      to zero, and the aggregate principal balance of the subordinated component
      classes of the other groups will be reduced by the excess.

    Example:
      Suppose that in the series in the preceding example, the group I subordinated
      component classes and the group II subordinated
      component classes each have an aggregate initial principal balance of $3,000,
      and that each subordinated composite class, B-1 through B-6 has a principal
      balance of $1,000. Now suppose that there are $4,000 of subordinated losses
      on
      the mortgage loans in pool II’s
      target-rate strip, but no losses on the mortgage loans in pool
      I’s
      target-rate strip. Then the entire $4,000 of losses will be allocated to the
      subordinated classes, reducing the principal balance of classes B-3 through
      B-6
      to zero. Classes B-1 and B-2 will each retain a principal balance of $1,000,
      comprised of a group I component class with a principal balance of $1,000 and
      a
      group II component class with a principal balance of $0. The principal balance
      of the subordinated group I component classes will thus be reduced by $1,000
      even though there are no losses on the pool I target-rate
      strip.

    Subject
      to “- Undercollateralization” below, if realized subordinated losses on a
      distribution day exceed the aggregate principal balance of the subordinated
      classes, the aggregate principal balance of the senior classes in each group
      will be reduced by the group’s proportional share of the excess losses, based on
      the proportions of all the losses for that distribution day in the mortgage
      loan
      pools.

    Example:
      Assume that for a distribution day, there are $2,250 of realized subordinated
      losses in pool I and $4,500 of realized subordinated

    

    
      
        
           

        

        
          23

          
            

          

        

        
           

        

      

    

    

    losses
      in pool II. The aggregate principal balance of the subordinated classes is
      only
      $6,000. Then the principal balance of the subordinated classes will be reduced
      to $0, and the remaining $750 of losses will reduce the aggregate principal
      balance of the senior classes of group I by $250 (or 1/3 of $750), and will
      reduce the aggregate principal balance of the senior classes of group II by
      $500
      (or 2/3 of $750). The principal balances of the component classes of the
      subordinated classes are irrelevant for these purposes.

     

    22.2 Maintenance
      of subordination

    Impairment
      of subordination for subordinated classes of a multiple-pool series will be
      determined based on composite, not component, classes. In determining whether
      a
      composite class has an impaired subordination level, the principal balance
      of
      the composite class will equal the sum of the principal balances of its
      component classes. If a subordinated composite class has an impaired
      subordination level, then principal will be allocated among the subordinated
      composite classes pursuant to “Allocations - Maintenance of subordination”
above, and, for purposes of adjusting principal balances, will be further
      allocated to the component classes in proportion to their principal
      balances.

     

    22.3 Distribution
      shortfalls

    If
      on a
      distribution day, payments on the mortgage loans in the target-rate strip for
      a
      pool are not sufficient to permit payments of any insurance premium due to
      an
      Insurer, and all interest and principal allocated to the senior target-rate
      classes of the related group, then the pool may receive insurance premium,
      interest and principal distributions from payments on the mortgage loans in
      another pool once any insurance premium due is paid to the Insurer, and full
      interest and principal distributions are made to the senior target-rate classes
      of the group related to the other pool.

    Example:
      Suppose that there are two groups of classes and that on a distribution day,
      cash available for distribution to the group I senior-target rate classes from
      payments on the pool I mortgage loans is $1,000 less than the
      aggregate
      interest and principal allocations to group I’s senior target-rate classes,
      while cash available for distribution to the group II senior-target rate classes
      from payments on the pool II mortgage loans exceeds the aggregate interest
      and
      principal allocations to group II’s senior target-rate classes by $1,500. Then
      $1,000 of the extra $1,500 available to group II will be used to make full
      interest and principal distributions to the group I senior target-rate classes,
      and only the remaining $500 will be distributed to the group II subordinated
      component classes.

    If
      there
      are several pools for which mortgage loan payments do not provide enough cash
      for full distributions to the senior target-rate classes and any Insurer, the
      related groups will receive cash from other pools in proportion to the aggregate
      amount by which any insurance premium due to an Insurer, and interest and
      principal distributions would otherwise fall short of interest and principal
      allocations. If there are several pools where mortgage loan payments provide
      cash in excess of the amount required for full distributions, they will provide
      cash to the senior target-rate classes, and any Insurer, of those groups related
      to the other pools in proportion to the amounts of the excess.

     

    22.4 Undersubordination

    If
      on a
      distribution day before the subordination depletion date, the principal balances
      of all the senior target-rate classes of any group (but not the principal
      balances of all the group’s subordinated component

    

    
      
        
           

        

        
          24

          
            

          

        

        
           

        

      

    

    

    classes)
      have been reduced to zero, and there is undersubordination (as defined below),
      then on that distribution day, before any distributions are made,

    · the
      pool
      distribution amount of the group will be reduced by an amount (the reduction
      amount)
      equal
      to the lesser of (1) unscheduled principal payments on the related pool’s
      target-rate strip received by the Trust during the preceding month and
      (2) the excess, determined without regard to this section “-
      Undersubordination,” of the pool distribution amount over the amount required to
      be used to reimburse any ratio-stripped PO classes,

    · the
      principal allocation to each class in the group will be reduced by the class’s
      proportionate share, based on principal balances, of the reduction
      amount,

    · the
      pool
      distribution amount of each group whose senior target-rate classes have not
      been
      reduced to zero will be increased by a proportionate share of the reduction
      amount based on the aggregate principal balance of the senior target-rate
      classes of each such group, and

    · the
      aggregate principal allocation for the senior target-rate classes of each group
      whose senior target-rate classes have not been reduced to zero will be increased
      by the portion of the reduction amount added to its pool distribution amount,
      which increased aggregate allocation will be further allocated among the senior
      target-rate classes in accordance with the rules in “Allocations among the
      senior target-rate classes” above.

    There
      is
undersubordination
      on a
      distribution day if either

    · the
      subordination level of the senior classes (without regard to group) on that
      distribution day is less than 200% of the initial subordination level of the
      senior classes, or

    · the
      aggregate scheduled principal balance of the mortgage loans in any pool that
      are
      delinquent 60 days or more (including for this purpose mortgage loans in
      foreclosure and real estate owned by the Trust as a result of Mortgagor
      default), averaged over the last six months, is 50% or more of the principal
      balance of the related group’s subordinated component classes.

     

    22.5 Undercollateralization

    Because
      losses on a mortgage loan may be allocated in part to the subordinated component
      classes of a different group, the scheduled principal balance of a pool’s
      target-rate strip could differ from the aggregate principal balance of the
      related group’s target-rate classes. If the scheduled principal balance of a
      pool’s target-rate strip is less than the aggregate principal balance of the
      related group’s target-rate classes, the group will be undercollateralized
      by the
      amount of the difference; conversely, if the scheduled principal balance of
      a
      pool’s target-rate strip is more than the aggregate principal balance of the
      related group’s target-rate classes, the group will be overcollateralized
      by the
      amount of the difference.

    If
      a
      group is undercollateralized, the normal distribution rules will be adjusted
      as
      follows:

    (1) To
      the extent that scheduled interest payments on the target-rate strip of a pool
      related to an overcollateralized group exceed the aggregate interest allocations
      to that groups’ target-rate classes, plus any insurance premium due to an
      Insurer, that excess, up to the amount of any interest allocation carryforwards
      that the undercollateralized group would otherwise experience on that
      distribution day and the insurance premium, will be deducted from the pool
      distribution amount for the overcollateralized group and added to
      the

    

    
      
        
           

        

        
          25

          
            

          

        

        
           

        

      

    

    

    pool
      distribution amounts for the undercollateralized group. If there is more than
      one such undercollateralized group, or more than one overcollateralized group,
      then (a) amounts will be deducted from the pool distribution amounts for
      the groups that are overcollateralized in proportion to such excess interest
      payments, up to the aggregate amount of such interest allocation carryforwards
      and the insurance premium for the undercollateralized groups, and
      (b) amounts will be added to the pool distribution amounts of the
      undercollateralized groups in proportion to the amount of such interest
      allocation carryforwards and insurance premium.

    (2) Before
      the subordination depletion date, if one or more groups is undercollateralized
      and the principal balance of each of the groups’ subordinated component classes
      has been reduced to zero, then (a) all amounts that (after required
      reimbursements to any ratio-stripped PO classes) would otherwise be distributed
      as principal to the subordinated component classes of the other groups, up
      to
      the aggregate amount by which such undercollateralized groups are
      undercollateralized, will, in proportion to the aggregate principal balance
      of
      the subordinated component classes of such other groups, be deducted from the
      pool distribution amount and the principal allocations to the subordinated
      component classes of such other groups, and (b) such amount will be added
      to the pool distribution amounts and the principal allocations of the
      target-rate classes of such undercollateralized groups, in proportion to the
      amount by which such groups are undercollateralized.

    (3) After
      the subordination depletion date, if a group is undercollateralized, then

    · once
      a
      group’s target-rate classes are all reduced to zero, principal payments on the
      related pool’s target-rate strip will be added to the pool distribution amount
      and to the principal allocations of the target-rate classes of the
      undercollateralized groups, in proportion to the amount by which they are
      undercollateralized, and

    · realized
      losses on the target-rate strips of the pools related to the overcollateralized
      groups will, up to the amount by which the group is overcollateralized, not
      reduce the principal balances of the target-rate classes of those groups, but
      will instead reduce the principal balances of the target-rate classes of the
      undercollateralized groups, in proportion to the amount by which they are
      undercollateralized, and in accordance with “Adjustments to class balances”
above. If there is more than one overcollateralized group, the losses that
      will
      not reduce principal balance will be in proportion to the amount by which each
      group is overcollateralized. If there is more than one undercollateralized
      group, the aggregate reductions in principal balances for each group will be
      in
      proportion to the amounts by which such groups are
      undercollateralized.

     

    22.6 Non-subordinated
      interest shortfalls

    Prior
      to
      the subordination depletion date, reductions to interest allocations due to
      (a) interest shortfalls due to the federal Servicemembers Civil Relief Act
      or any comparable state laws and (b) non-supported prepayment interest
      shortfalls will be allocated pro-rata to all the classes of all the groups,
      regardless of the pools in which the shortfalls originate. 

    From
      and
      after the subordination depletion date, 

    · interest
      shortfalls due to the federal Servicemembers Civil Relief Act or
      any

    

    
      
        
           

        

        
          26

          
            

          

        

        
           

        

      

    

     

    comparable
      state laws will be separately calculated for each pool, and will be allocated
      solely to the classes of the related group, and 

    · the
      compensating cap and non-supported prepayment interest shortfalls will be
      separately calculated for each pool, and non-supported prepayment interest
      shortfalls for a pool will be allocated solely to the classes of the related
      group.

     

    
      	
              23

            	
              Super
                senior classes

            

    

    The
      following table lists the super
      senior classes, and
      their
      respective super
      senior support classes.
      

     

    
      	
              Super
                senior class

            	
              Super
                senior support class

            	
              Support
                amount

            
	
              IA-1

            	
              IA-11
                

            	
              $1,109,064.00

            
	
              IA-1

            	
              IA-12

            	
              $473,407.59

            
	
              IA-5

            	
              IA-12

            	
              $1,933,807.41

            
	
              IA-9

            	
              IA-10

            	
              $2,887,008.00

            

    

     

    After
      the
      subordination depletion date, any loss (other than a non-subordinated loss)
      on a
      target-rate strip that would otherwise reduce the principal balance of a super
      senior class will instead reduce the principal balance of its super senior
      support classes. 

    A
      loss
      that would otherwise reduce the principal balance of super senior class IA-1
      will instead reduce the principal balances of super senior support classes
      IA-11
      and IA-12 in proportion to their principal balances; once class IA-12 has been
      reduced by such losses by the support amount shown above, all further losses
      that would otherwise reduce the principal balance of class IA-1 will instead
      reduce the principal balance solely of class IA-11, until the principal balance
      of class IA-11 is reduced to zero . 

    For
      these
      purposes, the principal balance of a super senior support class on a
      distribution day will be determined after giving effect to the adjustments
      described in paragraphs (2) through (5) of section 17, “Adjustments to class
      balances,“ for that distribution day (which include the reductions for
      non-subordinated losses, principal distributions and realized subordinated
      losses), but before the adjustments required by this section 23.

     

    
      	
              24

            	
              Retail
                classes

            

    

    There
      are
      no retail
      classes.
      There
      is no retail
      reserve fund.

     

    
      	
              25

            	
              Insured
                classes

            

    

    There
      are
      no insured
      classes.
      There
      is no Insurer,
      certificate
      insurance policy,
      insurance
      premium,
      or
reserve
      fund.

     

    
      	
              26

            	
              Advance
                account

            

    

    There
      is/are no advance
      account,
      advance
      account advances,
      advance
      account available advance amount,
      advance
      account depository,
      advance
      account depository agreement,
      advance
      account funding date,
      or
advance
      account trigger date,
      Paying
      Agent failure,
      or
Paying
      Agent failure advance.

     

    
      	
              27

            	
              REMIC
                provisions 

            

    

     

    27.1 Constituent
      REMICs

    (a)
      CMSI
      and the
      Trustee will make the appropriate elections to treat the Trust Fund, and the
      affairs of the Trust Fund will be conducted so as to qualify the Trust Fund,
      for
      federal income tax purposes as three separate constituent
      REMICs
      - the
pooling
      REMIC,
      the
      lower-tier
      REMIC,
      and
      the upper-tier
      REMIC.
      The
      pooling REMIC
      will be
      the applicable
      constituent REMIC
      for
      purposes of section 3.21. 

    The
      assets of the pooling REMIC
      will
      consist of the mortgage loans, such amounts

    

    
      
        
           

        

        
          27

          
            

          

        

        
           

        

      

    

    

    as
      may
      from time to time be held in the certificate account, any insurance policies
      relating to a mortgage loan, and property that secured a mortgage loan and
      that
      has been acquired by foreclosure or deed in lieu of foreclosure and all proceeds
      thereof. Classes IA-PO, IA-IO, IIA-PO, IIA-IO, and the class P regular interests
      described below, are designated as the regular
      interests
      in the
      pooling REMIC
      within
      the meaning of Internal Revenue Code Section 860G(a)(1). Class PR is designated
      as the residual
      interest
      in the
      pooling REMIC
      within
      the meaning of Internal Revenue Code Section 860G(a)(2).

    The
      assets of the lower-tier REMIC
      will
      consist of the class P regular interests described below, the Trustee’s rights
      under any certificate insurance policy and reserve fund, any retail reserve
      fund, and any assets in the lower-tier REMIC
      account
      described below. Classes IA-1 through IA-4, IA-6, IA-8 through IA-12, IIA-1,
      and
      B-1 through B-6, and any class L regular interests described below, are
      designated as the regular interests in the lower-tier REMIC.
      Class LR
      is designated as the residual interest in the lower-tier REMIC.

    The
      assets of the upper-tier REMIC
      will
      consist of any class L regular interests described below, and any assets in
      the
      upper-tier REMIC
      account
      described below. Classes IA-5, and IA-7 are designated as the regular interests
      in the upper-tier REMIC.
      Class R
      is designated as the residual interest in the upper-tier REMIC.

     

    27.2 The
      class P and class L regular interests

    There
      are
      four uncertificated class
      P regular interests,
      each
      designated as “CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC
      Pass-Through Certificates,” and further individually designated as
      a

    · “PI-M
      regular interest,”

    · “PI-Q
      regular interest,” 

    · “PII-M
      regular interest,” and

    · “PII-Q
      regular interest.” 

    There
      is
      one uncertificated class
      L regular interest,
      designated as “CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC
      Pass-Through Certificates,” and further designated as the “LI-5 regular
      interest.”

    The
      initial principal or notional balances and certificate rates of the class P
      and
      class L regular interests are:

     

    
      	
              Regular
                interest

               

            	
              initial
                principal (or notional) balance

               

            	
              certificate
                rate (per annum)

               

            
	
              PI-M

               

            	
              $1,320.295275

               

            	
              6%

               

            
	
              PI-Q

               

            	
              $303,321,536.454725

               

            	
              6%

               

            
	
              PII-M

               

            	
              $45.620977

               

            	
              5.75%

               

            
	
              PII-Q

               

            	
              $10,466,416.149023

               

            	
              5.75%

               

            
	
              LI-5

               

            	
              $104,146,650.00
                

               

            	
              6%

               

            

    

    The
      Trustee acknowledges that it is holding the class P regular interests as assets
      of the lower-tier REMIC
      and
      any
      class L regular interests as assets of the upper-tier REMIC.

     

    27.3 Distributions
      to class P and class L regular interests

    On
      each
      distribution day, each regular interest will receive a principal distribution,
      or allocation of the principal portion of realized losses, equal in the
      aggregate to the principal distribution, or allocation of the principal portion
      of realized losses, for that day on,

    · for
      the
      PI-M and PI-Q regular interests, the pool I target-rate strip; 

    · for
      the
      PII-M and PII-Q regular interests, the pool II target-rate strip,
      and

    · for
      the
      class LI-5 regular interest, class IA-5. 

    Recoveries
      of previously allocated realized losses of principal will be allocated to the
      class P and any class L regular

    

    
      
        
           

        

        
          28

          
            

          

        

        
           

        

      

    

    

    interests
      in the same manner as realized losses were allocated to them.

    For
      each
      distribution day, and for each pool x
      and
y,
      the
      Px-M
      regular interest will receive distributions of principal, or allocation of
      the
      principal portion of realized losses on the related target-rate strip, so as
      to
      keep its principal balance (computed to $.000001) equal to 0.01% of the
      aggregate principal balance of the subordinated component classes of the related
      group. However, if the ratio of the principal balance of the Px-M
      regular interest to the principal balance of the Py-M
      regular interest is not the same as the ratio of the aggregate principal balance
      of the component classes xB-1
      through xB-6
      to
      the aggregate principal balance of the component classes yB-1
      through yB-6,
      then
      the least amount of principal will be distributed to the Px-M
      or
      Py-M
      regular interest, as applicable, so that the ratio of the principal balance
      of
      the Px-M
      regular interest to the principal balance of the Py-M
      regular interest will be the same as the ratio of the aggregate principal
      balance of the component classes xB-1
      through xB-6
      to
      the aggregate principal balance of the component classes yB-1
      through yB-6.
      Also, for such distribution day, the Px-Q regular interest will receive the
      balance of the principal distribution, and allocation of the principal portion
      of realized losses on its related target-rate strip.

    As
      of any
      date, the principal balance of the class LI-5 regular interest will equal the
      principal balance of class IA-5. 

    On
      each
      distribution day, each class P and any class L regular interest will receive
      an
      interest distribution at its certificate rate, and interest shortfalls and
      the
      interest portion of realized losses for the related target-rate strip will
      be
      allocated to such regular interest in the same proportion as interest is
      allocated to them, provided
      that
      

    · (a) prior
      to the subordination depletion date, non-supported prepayment interest
      shortfalls will be allocated pro-rata to all the class P regular interests,
      regardless of the pool in which the shortfalls originate, and (b) from and
      after the subordination depletion date, non-supported prepayment interest
      shortfalls for any pool x
      (where
x
      is a
      variable for pool designations I, II, etc.)
      will
      be allocated solely to the Px-M
      and
      Px-Q
      regular interests, and

    · (a) prior
      to the subordination depletion date, any class L regular interest will be
      allocated its proportional share, based on accrued interest of any lower-tier
      REMIC
      regular
      interests, of non-supported prepayment interest shortfalls, regardless of the
      pool in which the shortfalls originate, and (b) from and after the
      subordination depletion date, any class L regular interest will be allocated
      its
      proportional share, based on accrued interest of any class L regular interests
      and the other lower-tier REMIC
      regular
      interests designated class xA,
      of
      non-supported prepayment interest shortfalls for pool x.

    No
      interest shortfall amount or unpaid interest shortfall on any class P or class
      L
      regular interest will bear interest. 

    The
      certificate rate for the class LI-5 regular interest is comprised of the sum
      of
LIBOR
      plus
      0.65% per annum payable on the class IA-5 certificates, and 5.35%
      per
      annum
      minus LIBOR
      payable
      on the notional balance of the class IA-7 certificates. 

     

    27.4 REMIC
      accounts and distributions

    CitiMortgage,
      the
      Trustee and the Paying Agent will 

    · perform
      their duties in a manner consistent with the REMIC
      provisions of the Internal Revenue Code, and will not

    

    
      
        
           

        

        
          29

          
            

          

        

        
           

        

      

    

     

    knowingly
      take or fail to take any action that would adversely affect the continuing
      treatment of the Trust Fund as segregated asset pools and the treatment of
      each
      such segregated asset pool as a REMIC
      or would
      result in the imposition of a tax on the Trust Fund, or any constituent
REMIC,
      and

    · carry
      out
      their covenants in this agreement and the elections and reporting required
      in
      section 3.15 on behalf of each constituent REMIC,
      including maintaining the following segregated accounts: 

    · the
      certificate account, 

    · if
      there
      is a pooling REMIC,
      a
      pooling REMIC
      account,

    · a
      lower-tier
      REMIC
      account,
      and

    · if
      there
      is an upper-tier REMIC,
      an
upper-tier
      REMIC
      account.

    Any
      pooling REMIC
      account,
      the lower-tier REMIC
      account,
      and any upper-tier REMIC
      account
      will be established in the same manner as the certificate account.

    CitiMortgage,
      on behalf of the Trustee, will deposit daily in the certificate account in
      accordance with section 3.3 all remittances received by it, any amounts required
      to be deposited in the certificate account pursuant to section 3.2, all other
      deposits required to be made to the certificate account other than those amounts
      specifically designated to be deposited in any pooling REMIC
      account,
      the lower-tier REMIC
      account,
      or any upper-tier REMIC
      account
      in this section, “REMIC
      accounts
      and distributions,” and all investments made with moneys on deposit in the
      certificate account, including all income or gain from such investments, if
      any.
      Funds on deposit in the certificate account will be held and invested in
      accordance with the applicable provisions of section 3.2 and 3.20. Distributions
      from the certificate account will be made in accordance with sections 3.6,
      3.8
      and these Series Terms to make payments in respect of the regular and residual
      interests in any pooling REMIC,
      the
      lower-tier REMIC,
      and any
      upper-tier REMIC
      and to
      pay servicing fees in accordance with section 3.6(h) and any insurance
      premium.

    Notwithstanding
      anything herein to the contrary, regular and residual interests in any pooling
      REMIC,
      the
      lower-tier REMIC,
      and any
      upper-tier REMIC
      will not
      receive distributions directly from the certificate account. On each
      distribution day, 

    · if
      there
      is a pooling
      REMIC,
CitiMortgage,
      on behalf of the Trustee, will withdraw from the certificate account and deposit
      by 12
      noon
      in
      the pooling REMIC
      account
      all distributions to be made on such distribution day in respect of interest
      on
      or in reduction of the principal balance of any class P regular interests,
      and

    · if
      there
      is no pooling REMIC,
      CitiMortgage,
      on behalf of the Trustee, will withdraw from the certificate account and deposit
      by 12 noon in the lower-tier REMIC
      account
      all distributions to be made on such distribution day in respect of interest
      on
      or in reduction of the principal balance of the regular interests in the
      lower-tier REMIC.

    If
      there
      is an upper-tier REMIC,
      CitiMortgage, on behalf of the Trustee, will immediately thereafter withdraw
      from the lower-tier REMIC
      account
      and deposit in the upper-tier REMIC
      account
      all distributions to be made on such distribution day in respect of interest
      on
      or in reduction of the principal balance of any class L regular interests.
      

    The
      Trustee will cause to be distributed from the lower-tier REMIC
      account
      and any upper-tier REMIC
      account,
      to the extent funds are on deposit therefor, all amounts required to be
      distributed with respect to the regular and residual interests in
      the

    

    
      
        
           

        

        
          30

          
            

          

        

        
           

        

      

    

    

    lower-tier
      REMIC
      and any
      upper-tier REMIC
      as
      specified in these Series Terms.

    To
      the
      extent that any part of the lower-tier REMIC
      account
      or any upper-tier REMIC
      account
      is designated in these Series Terms as an investment account, the provisions
      in
      section 3.19 applicable to the investment of funds will apply to such
REMIC
      accounts. In addition, section 3.3(a) regarding commingling will apply to such
      REMIC
      accounts.

    (b) CitiMortgage will
      maintain books for constituent REMICs
      on a
      calendar year taxable year and on the accrual method of accounting.

    (c) The
      Trustee will not create, or permit the creation of, any “interests” in any
      constituent REMIC
      within
      the meaning of Internal Revenue Code Section 860D(a)(2) other than the interests
      represented by the certificates or, if there are multiple REMICs,
      the
      uncertificated regular interests in any pooling REMIC
      or (if
      there is an upper-tier REMIC)
      the
      lower-tier REMIC.

    (d) Except
      as otherwise provided in the Internal Revenue Code, CitiMortgage will not grant,
      and neither CitiMortgage nor the Trustee will accept, property unless
      (i) substantially all of the property held by each constituent REMIC
      constitutes either “qualified mortgages” or “permitted investments” as defined
      in Internal Revenue Code Sections 860G(a)(3) and (5), respectively, and
      (ii) no property will be granted to a constituent REMIC
      after
      the startup day, unless the grant would not subject the constituent REMIC
      to the
      100% tax on contributions to a REMIC
      after
      the startup day imposed by Internal Revenue Code Section 860G(d).

    (e)
      The
      Trustee will not accept on behalf of the Trust Fund or a constituent
REMIC
      any fee
      or other compensation for services and will not accept on behalf of the Trust
      Fund any income from assets other than those permitted to be held by a
REMIC.

    (f) Neither
      CitiMortgage nor the Trustee will sell or permit the sale of all or any portion
      of the mortgage loans, or of an Eligible Investment held in the certificate
      account or in any REMIC
      account
      (other than in accordance with sections 2.2, 2.3, 2.4 and 3.19(a)) unless such
      sale is pursuant to a “qualified liquidation” as defined in Internal Revenue
      Code Section 860F(a)(4)(A) and is in accordance with section 9.1.

     

    27.5 Tax
      matters person

    If
      in any
      taxable year there will be more than one holder of any class of residual
      certificates, a tax
      matters person
      may be
      designated for the related REMIC,
      who
      will have the same duties for the related REMIC
      as those
      of a “tax matters partner” under Subchapter C of Chapter 63 of Subtitle F of the
      Internal Revenue Code, and who will be, in order of priority,
      (i) CitiMortgage or an affiliate of CitiMortgage, if CitiMortgage or such
      affiliate is the holder of a residual certificate of the related REMIC
      at any
      time during the taxable year or at the time the designation is made,
      (ii) if CitiMortgage is not a holder of a residual certificate of the
      related REMIC
      at the
      relevant time, CitiMortgage as agent for the holder of the residual certificate
      of the related REMIC,
      if the
      designation is permitted to be made under the Internal Revenue Code, or
      (iii) the holder of a residual certificate of the related REMIC
      or
      person who may be designated a tax matters person in the same manner in which
      a
      tax matters partner may be designated under applicable Treasury Regulations,
      including Treas-ury Regulations § 1.860F-4(d) and tem-porary Treasury
      Regulations § 301.-6231-(a)-(7)-1T.

     

     

    

    
      
        
           

        

        
          31

          
            

          

        

        
           

        

      

    

    

     

    28
      YIELD
      MAINTENANCE AGREEMENT

     

    28.1 Agreement

    The
      Trustee is hereby directed to enter into a yield
      maintenance agreement
      with The
      Bank of New York (the yield
      maintenance provider)
      in
      substantially the form attached as exhibit F. The yield maintenance agreement
      is
      an asset of the Trust, but not of any constituent REMIC.

    Payments
      to the yield maintenance provider will be made by the Underwriter, and the
      Trustee will have no responsibility for such payments.

    Under
      the
      yield maintenance agreement, the yield maintenance provider will make certain
      payments (yield
      maintenance payments)
      to the
      Paying Agent for the benefit of the holders of the class IA-5 certificates.
      Yield maintenance payments received by the Paying Agent will be distributed
      to
      the holders of the class IA-5 certificates in proportion to the principal
      balances of their certificates.

    Each
      yield maintenance payment to be distributed to the holders of the class IA-5
      certificates will be a per annum percentage equal to the excess of LIBOR
      for the
      accrual period (but not more than 8.85%) over 5.35% of an assumed
      principal balance
      for the
      class for the relevant distribution day set forth in the yield maintenance
      agreement. 

    The
      Paying Agent will pass the yield maintenance payments through to the holders
      of
      the class IA-5 certificates, but not more than will be required to pay the
      class
      IA-5 certificates an amount (the yield
      maintenance amount)
      for
      that distribution day equal to a per annum rate of the excess of LIBOR
      for the
      accrual period (but not more than 8.85%) over 5.35% of the actual principal
      balance for the class for that distribution day.

    If
      for
      any distribution day, the assumed principal balance is greater than the
      aggregate outstanding principal balance of the class IA-5 certificates, the
      yield maintenance payment by the yield maintenance provider to the Paying Agent
      may exceed the yield maintenance amount required to be made to the holders
      of
      the class IA-5 certificates. In such case, any excess will be deposited in
      a
yield
      maintenance reserve fund
      maintained in an account at the Paying Agent. If for any distribution day,
      the
      assumed principal balance is less than the aggregate outstanding principal
      balance of the class IA-5 certificates, the yield maintenance payment will
      be
      less than the yield maintenance amount for such distribution day and a shortfall
      will result. The amount in the yield maintenance reserve fund, if any, will
      be
      used (i) to cover any such shortfall for any distribution day, and (ii) for
      distribution days after the distribution day in May 2010, to pay the yield
      maintenance amount. Once the principal balance of the class IA-5 certificates
      has been reduced to zero, or the Trust has been terminated, any funds remaining
      in the yield maintenance reserve fund will be paid to the
      Underwriter.

    The
      yield
      maintenance reserve fund may not be invested.

    The
      yield
      maintenance reserve fund will be treated as an “outside reserve fund” under the
REMIC
      provisions, beneficially owned by the Underwriter, who will be entitled to
      any
      reimbursement from the REMICs
      with
      respect thereto.

     

    28.2 Tax
      treatment

    CitiMortgage
      will treat the portion of the Trust that holds the right of the class IA-5
      certificates to receive payments under the yield maintenance agreement as a
      grantor trust for federal income tax purposes.

    

    
      
        
           

        

        
          32

          
            

          

        

        
           

        

      

    

    

    CitiMortgage
      will treat the holders of the class IA-5 certificates as the beneficial owners
      of the right to receive payments under the yield maintenance agreement, and
      the
      Underwriter as the beneficial owner of the yield maintenance agreement and
      the
      yield maintenance reserve fund. Based on information provided annually by
      CitiMortgage with respect to the Class IA-5 Certificates, the Trustee will
      report, or will cause to be reported, annually to the holders of the class
      IA-5
      certificates and to the IRS
      (as
      attachments to Form 1041 or other applicable form) their allocable shares of
      income and expense with respect to their right to receive payments under the
      yield maintenance agreement under the rules applicable to notional principal
      contracts, taking into account the portion of the original issue price of the
      class IA-5 certificates allocable to their right to receive payments under
      the
      yield maintenance agreement, and treating each holder of class IA-5 certificates
      as if it were an original holder. CitiMortgage will not vary the investment
      of
      the holders of the class IA-5 certificates to take advantage of variations
      in
      market rates of interest to improve their rates of return.

     

    
      	
              29

            	
              Notice
                addresses

            

    

    Notices
      should be sent:

    To
      the
      Trustee at its corporate trust office at One Federal Street, 3rd Floor, Boston,
      Massachusetts 02110, Attention: Corporate Trust Services. 

    To
      CMSI
      at
      Citicorp Mortgage Securities, Inc., 1000 Technology Drive, O’Fallon, Missouri
      63368, Attention: Daniel P. Hoffman.

    To
      CitiMortgage at CitiMortgage, Inc., 1000 Technology Drive, O’Fallon, Missouri
      63368, Attention: Daniel P. Hoffman.

    To
      S&P at 55 Water Street, 41st Floor, New York, New York 10041, Attention:
      RMBS Surveillance. 

    To
      Moody’s at 99 Church Street, New York, New York 10007.

    To
      Fitch
      at Residential Mortgage Pass-Through Monitoring, Fitch Ratings, One State Street
      Plaza, 30th Floor, New York, New York 10004.

    To
      Citibank, N.A. at (a) for certificate transfer and presentment of
      certificates for final distribution, at 111 Wall Street, 15th floor, New York,
      NY 1005, Attention: 15th floor window, and (b) for all other purposes, at
      388 Greenwich Street, 14th Floor, New York, NY 10013, Attention: Agency and
      Trust, CMSI.
      

    To
      the
      Mortgage Document Custodian at Citibank (West), FSB, 5280 Corporate Drive,
      M/C
      0005, Frederick, Maryland 21703, Attention: Loretta Badgett. 

    To
      any
      Insurer, at the address given for the Insurer in the first paragraph of “Insured
      classes” above.

    The
      Paying Agent, any Insurer, CMSI
      and
      CitiMortgage may each change their address for notices by written notice to
      the
      others. The Trustee may change its corporate trust office by written notice
      to
CMSI,
      CitiMortgage,
      any
      Insurer, and all certificate holders.

     

    
      	
              30

            	
              Initial
                Depositories

            

    

    The
      initial Depository for the certificate and servicing accounts for the mortgage
      loans will be Citibank (West), FSB.
      

    

     

    

    
      
         

      

      
        33

        
          

        

      

      
         

      

    

     

    STANDARD
      TERMS

     

    1 Definitions
      and usages

     

    1.1 Defined
      terms

    In
      this
      agreement, the following words and phrases have the following
      meanings:

    accrual
      termination day:
      For an
      accrual class, the earlier of (1) the first distribution day on which the
      principal balance of each of its accrual directed classes on the preceding
      day
      is zero, or (2) the subordination depletion date.

    affiliate:
      For a
      specified person, any other person that controls, is controlled by or is under
      common control with the specified person. In this definition, “control” of a
      specified person means the power to direct the management and policies of the
      person, directly or indirectly, whether through the ownership of voting
      securities, by contract or otherwise; and the terms “controlling” and
“controlled” have correlative meanings.

    affiliated
      servicing fee rate:
      0.25%
      per annum. The monthly
      affiliated servicing fee rate is one-twelfth of the affiliated servicing fee
      rate.

    aggregate
      outstanding advances:
      For a
      determination date, the aggregate of net servicing account advances, net
      voluntary advances, net Paying Agent advances and advance account advances
      made
      from the cut-off date to the determination date, plus any uncommitted cash
      advances to be made on the next distribution day.

    appraisal:
      For a
      mortgage loan, the appraisal conducted in connection with the origination of
      the
      mortgage loan, whether originated upon the purchase of the related mortgaged
      property or in connection with a refinancing.

    Authorized
      Officer:
      For
      CitiMortgage or CMSI,
      the
      Chairman of the Board of Directors, the President, any Executive Vice President,
      Senior Vice President, Vice President, Assistant Vice President, Controller,
      Assistant Controller, Secretary, Assistant Secretary, Treasurer or Assistant
      Treasurer, or any other natural person designated in an officer’s certificate
      signed by any of the foregoing officers and furnished to the Trustee and, solely
      in the case of a statement given pursuant to section 3.22, any Servicing
      Officer.

    Bankruptcy
      Code:
      The
      United States Bankruptcy Code of 1978.

    bankruptcy
      coverage termination date:
      If
      there is a bankruptcy loss limit, the distribution day on which the bankruptcy
      loss limit has been reduced to zero or a negative number (or the subordination
      depletion date, if earlier).

    bankruptcy
      loss:
      For a
      mortgage loan, (1) a debt service reduction or (2) a deficient
      valuation, unless,
      in
      either case, CitiMortgage has notified the Trustee that CitiMortgage is
      diligently pursuing any remedies that may exist in connection with the
      representations and warranties made regarding the related mortgage loan and
      either (A) the related mortgage loan is not in default with regard to
      payments due thereunder, or (B) delinquent payments of principal and
      interest under the related mortgage loan, and any premiums on any applicable
      hazard insurance policy and any related escrow payments for the mortgage loan,
      are being advanced on a current basis without giving effect to any debt service
      reduction.

    bankruptcy
      loss limit:
      If an
      initial bankruptcy loss limit is stated in the Series Terms, for a distribution
      day, the initial bankruptcy loss limit minus the aggregate amount of bankruptcy
      losses since the cut-off date. The bankruptcy loss limit may be further reduced
      by CitiMortgage (including accelerating the manner in which such coverage is
      reduced) provided that prior to

    

    
      
        
           

        

        
          34

          
            

          

        

        
           

        

      

    

    

    the
      reduction, each rating agency confirms in writing to CitiMortgage (with a copy
      to the Trustee) that the reduction will not adversely affect the rating agency’s
      then-current rating of the certificates.

    beneficial
      owner:
      For a
      certificate held by a Clearing Agency, the person who is the beneficial owner
      of
      the certificate as reflected on the Clearing Agency’s books or on the books of a
      person maintaining an account with the Clearing Agency (directly or as an
      Indirect Participant, in accordance with the Clearing Agency’s
      rules).

    business
      day:
      Any day
      other than a Saturday, a Sunday or a day on which banking institutions in New
      York, New York or in the cities where the Trustee, the Paying Agent,
CMSI,
      CitiMortgage, any Insurer (but only to the extent that the Insurer is required
      under this agreement to make or receive a payment on that day), any delegated
      servicers, and (but only if the third-party servicer is depositing funds
      received on third-party mortgage loans with CitiMortgage or the Paying Agent
      on
      that day) the third-party servicer is located are authorized or obligated by
      law
      or executive order to be closed or, in the case of a distribution day and if
      there are book-entry certificates, any day on which the relevant Clearing Agency
      is closed. For purposes of determining LIBOR
      for
      any
      LIBOR
classes,
      a business day is a day on which banks in London and New York are open for
      the
      transaction of international business.

    buydown
      account:
      The
      deposit account or accounts, which may bear interest, created and maintained
      in
      the name of the Trustee for the benefit of the mortgagors, subject to the rights
      of the Trustee pursuant to the buydown subsidy agreements.

    buydown
      funds:
      Funds
      contributed at origination by the seller or buyer of a property subject to
      a
      buydown mortgage loan, or by any other source, plus interest earned thereon,
      in
      order to reduce the payments required from the mortgagor for a specified period
      in specified amounts.

    buydown
      mortgage loan:
      Any
      mortgage loan for which, pursuant to a buydown subsidy agreement, (i) the
      mortgagor pays less than the full monthly payments specified in the mortgage
      note for a specified period, and (ii) the difference between the payments
      required under the buydown subsidy agreement and the mortgage note is provided
      from buydown funds.

    buydown
      subsidy agreement:
      The
      agreement relating to a buydown mortgage loan pursuant to which an Originator
      may apply the buydown funds to a mortgagor’s payments.

    certificate
      holder
      or
holder:
      The
      person in whose name a certificate is registered in the Certificate
      Register.

    Citibank
      banking affiliate:
      An
      affiliate of Citibank, N.A. that is either (i) a federal savings and loan
      association duly organized, validly existing and in good standing under the
      federal banking laws, (ii) an institution duly organized, validly existing
      and in good standing under the applicable banking laws of any state, or
      (iii) a national banking association duly organized, validly existing and
      in good standing under the federal banking laws.

    class:
      For
      certificates, any certificates designated as a class in the Series Terms, for
      any class L or class P regular interests, the regular interests in the
      constituent REMIC
      designated as such in “REMIC
      provisions” above, and for residual certificates, all residual certificates
      having the same class designation. A “class” will be understood not to include a
      residual class of certificates unless otherwise expressly stated.

    class
      percentage:
      For one
      or more classes, the ratio of the aggregate of the principal

    

    
      
        
           

        

        
          35

          
            

          

        

        
           

        

      

    

    

    balances
      of the classes to the aggregate of the principal balances of all classes of
      the
      series, expressed as a percentage.

    classes
      A-x through A-y:
      For a
      positive integer x
      and a
      greater integer y,
      each
      class A-z
      for all
      integers z
      from
x
      through
y,
      inclusive. Example:
      “classes A-3 through A-5” means each of classes A-3, A-4, and A-5. If a class is
      designated with an integer and letter pair, then such class follows the class
      with the same integer x
      and
      precedes the class of the next greater integer y.
      Example:
      “classes A-3 through A-5” means, if there are classes A-4A and A-4B, each of
      classes A-3, A-4, A-4A, A-4B, and A-5.

    classes
      B-x through B-y:
      For a
      positive integer x
      and any
      greater integer y,
      each
      class B-z
      for all
      integers z
      from
x
      through
y,
      inclusive. Example:
      “classes B-3 through B-5” means each of classes B-3, B-4 and B-5.

    Clearing
      Agency:
      An
      organization registered as a “clearing agency” pursuant to Section 17A of the
      Exchange Act. The initial Clearing Agency will be The Depository Trust
      Company.

    Clearing
      Agency Participant:
      A
      broker, dealer, bank other financial institution or other person for whom a
      Clearing Agency effects book-entry transfers and pledges of securities deposited
      with the Clearing Agency.

    collected
      servicing fee
      on a
      mortgage loan: For any month, the excess of the interest payment received on
      the
      mortgage loan for the month (including accrued interest due but not received
      from liquidation or insurance proceeds for liquidated loans) over the amount
      of
      interest on the mortgage loan for the month at the pass-through rate, up to
      the
      servicing fee CitiMortgage is permitted to retain under this agreement.

    debt
      service reduction:
      For a
      mortgage loan, a reduction in the scheduled monthly loan payment for the
      mortgage loan by a court of competent jurisdiction in a proceeding under the
      Bankruptcy Code or any similar state law, except a reduction that would
      constitute a deficient valuation. If the court proceeding results in an increase
      in the scheduled payment for a month (for example, a final balloon payment
      or a
      payment in a month after the originally scheduled maturity of the mortgage
      loan), the increased payment will be considered a scheduled payment and not
      a
      debt service reduction.

    Example:
      Suppose a homeowner has a mortgage loan with an outstanding principal balance
      of
      $50,000 and an interest rate of 7%. The loan has 10 years to run. The homeowner
      files for bankruptcy, and the bankruptcy court (1) reduces
      the outstanding principal balance to $40,000, (2) reduces the interest rate
      to 6%, and (3) stretches the payments out to 20 years.
      Then

    · the
      $10,000 reduction in principal owed is a bankruptcy loss, and 

    · the
      difference between the monthly payment the homeowner would have made on the
      remaining $40,000 at the original interest rate and maturity, and the monthly
      payment the homeowner is now required to make on the new lower interest rate
      and
      extended maturity, is a debt service reduction, and

    · payments
      in the final 10 years (that is, after the originally scheduled maturity) will
      be
      scheduled payments.

    deficient
      valuation:
      For a
      mortgage loan, a valuation by a court of competent jurisdiction of the mortgaged
      property in an amount less than the then-outstanding indebtedness under the
      mortgage loan, or a reduction in the scheduled monthly principal payment that
      results in a permanent forgiveness of principal, which valuation or reduction
      results from a proceeding under the Bankruptcy Code or any similar state
      law.

    delegated
      servicer:
      A
      person or persons, including a special servicer, to whom CitiMortgage delegates
      some or all of its

    

    
      
        
           

        

        
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    servicing
      obligations pursuant to section 4.5.

    Depository:
      The
      bank or banks or savings and loan association or associations or trust company
      or companies (which may be the Trustee or which may be Citibank, N.A. or a
      Citibank banking affiliate ) at which the certificate account, buydown account,
      escrow account, custodial account for P&I and servicing account are
      established or maintained pursuant to section 3.2, 3.3 or 3.3. Each Depository
      must meet the requirements of section 11.1. 

    determination
      date:
      For
      each distribution day, the close of business on the 18th day (or, if that day
      is
      not a business day, the preceding business day) of the month in which the
      distribution day occurs.

    discount
      loan:
      A
      mortgage loan that has a pass-through rate less than the target
      rate.

    Eligible
      Account:
      Either

    (A)
      a
      segregated account or accounts maintained at Citibank, N.A. or a Citibank
      banking affiliate, provided that the short-term unsecured debt obligations
      of
      Citibank, N.A. or the Citibank banking affiliate are rated at least “A-1+” by
      S&P if S&P is a rating agency, “F-l” by Fitch if Fitch is a rating
      agency, and “P-1” by Moody’s if Moody’s is a rating agency, or 

    (B)
      a
      segregated account or accounts maintained with an institution 

    · whose
      deposits are insured by the FDIC,
      

    · the
      unsecured and uncollateralized debt obligations of which are rated at least “AA”
by S&P if S&P is a rating agency, “AA” by Fitch if Fitch is a rating
      agency, and “Aa” by Moody’s if Moody’s is a rating agency, 

    · that
      has
      a short term rating of at least “A-1+” by S&P if S&P is a rating agency,
“F-1” by Fitch if Fitch is a rating agency, and “P-1” by Moody’s if Moody’s is a
      rating agency, and 

    · is
      either
      (i) a federal savings and loan association duly organized, validly existing
      and in good standing under the federal banking laws, (ii) an institution
      duly organized, validly existing and in good standing under the applicable
      banking laws of any state, (iii) a national banking association duly
      organized, validly existing and in good standing under the federal banking
      laws
      and (iv) a principal subsidiary of a bank holding company, or 

    (C) a
      trust account (which will be a “special deposit account”) maintained with the
      trust department of a federal or state chartered depository institution or
      of a
      trust company, having capital and surplus of not less than $50 million, acting
      in its fiduciary capacity. 

    Any
      Eligible Account maintained with the Trustee will conform to the preceding
      clause (C).

    ERISA:
      The
      Employee Retirement Income Security Act of 1974.

    ERISA
      Restricted Certificates:
      The
      B-4, B-5 and B-6 certificates.

    Exchange
      Act:
      The
      Securities Exchange Act of 1934.

    extraordinary
      event:
      Any of
      the following events: (i) hostile or warlike action in time of peace or war;
      (ii) the use of any weapon of war employing atomic fission or radioactive force
      whether in time of peace or war; or (iii) insurrection, rebellion, revolution,
      civil war or any usurped power or action taken by any governmental authority
      in
      preventing such occurrences (but not including looting or rioting occurring
      not
      in time of war).

    FDIC:
      The
      Federal Deposit Insurance Corporation.

    Fitch:
      Fitch
      Ratings.

    fraud
      loss limit:
      If an
      initial fraud loss limit is stated in the Series Terms, for a distribution
      day,

    (X)
      prior
      to the second anniversary of the cut-off date, the initial fraud loss
      limit

    

    
      
        
           

        

        
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    minus
      the
      aggregate amount of fraud losses since the cut-off date, and 

    (Y)
      from
      the second through fifth anniversary of the cut-off date, (1) the lesser of
      (a)
      the fraud loss limit as of the most recent anniversary of the cut-off date
      and
      (b) 0.50% of the aggregate scheduled principal balance of all the mortgage
      loans
      as of the most recent anniversary of the cut-off date, minus (2) the aggregate
      amount of fraud losses since the most recent anniversary of the cut-off date.
      

    After
      the
      fifth anniversary of the cut-off date the fraud loss limit will be
      zero.

    fraud
      loss:
      A
      liquidated loan loss as to which there was fraud in the origination of the
      mortgage loan.

    GIC:
      A
      guaranteed investment contract or surety bond.

    GNMA:
      the
      Government National Mortgage Association.

    group:
      In a
      multiple-pool series, the classes related to a pool; in a single-pool series,
      all the classes.

    group
      target-rate class percentage:
      For one
      or more target-rate classes of a group, the ratio of the classes’ principal
      balance to the principal balance of all target-rate classes of the group,
      expressed as a percentage. For a single pool series, the group target-rate
      class
      percentage is the same as the target-rate class percentage.

    Guide:
      The
      CitiMortgage, Inc. Servicing Guide, being the manual relating to CitiMortgage’s
      mortgage loan purchase program, as revised or supplemented from time to
      time.

    high-cost
      mortgage loan:
      A “high
      cost loan,” “high-rate, high-fee mortgage,” “covered loan,” or similar loan
      under any predatory lending law, if the law contains provisions that may result
      in liability of the Trust Fund as a purchaser or assignee of the
      loan.

    holder:
      Has the
      same meaning as “certificate holder.”

    hypothetical
      mortgage loan:
      A
      non-existent mortgage loan that, combined with one or more other hypothetical
      mortgage loans, would have the same interest and principal payments as an actual
      mortgage loan. 

    Example:
      A mortgage loan having a principal balance of $100,000 and a pass-through rate
      of 8% could be divided into two hypothetical mortgage loans, the first having
      a
      $100,000 principal balance and a pass-through rate of 7% per annum, and the
      second an IO loan having a $100,000 principal balance and a pass-through rate
      of
      1% per annum. References to the hypothetical mortgage loans in the target-rate
      strip will include those actual mortgage loans whose pass-through rates equal
      the target rate.

    independent
      accountants :
      Accountants who are “independent” within the meaning of Rule 2-01(b) of the
      Securities and Exchange Commission’s Regulation S-X under the Exchange
      Act.

    Indirect
      Participant:
      An
      organization that participates in the Clearing Agency by clearing through or
      by
      maintaining a custodial account with a Participant.

    initial:
      As
      applied to a principal or notional balance, target-rate class percentage, or
      subordination level, means the principal or notional balance, target-rate class
      percentage, or subordination level as of the cut-off date.

    insurance
      proceeds:
      Proceeds of 

    · a
      primary
      mortgage insurance policy,

    · a
      hazard
      insurance policy to the extent not applied to restore the mortgaged property
      or
      released to the mortgagor in accordance with CitiMortgage’s normal servicing
      procedures or, for a third-party servicer, the Guide, and 

    · any
      other
      insurance policy or bond relating to the mortgage loans or their
      servicing.

    

    
      
        
           

        

        
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    Internal
      Revenue Code:
      The
      Internal Revenue Code of 1986.

    investment
      account:
      The
      certificate account (but only if so stated in the Series Terms) and any other
      account or any portion thereof that consists of cash or Eligible
      Investments.

    Investment
      Income:
      Any and
      all investment income and gains, net of any losses, actually received on the
      investment of funds on deposit in all investment accounts.

    IO
      class:
      A class
      that has a certificate rate but no principal balance, receives interest
      distributions on its notional balance, but does not receive principal
      distributions.

    IO
      loan:
      A
      mortgage loan having only a “notional balance.” Such a mortgage loan would pay
      interest (usually at a variable rate) on its notional balance, but would not
      pay
      principal.

    IO
      strip:
      The
      ratio-stripped IO loans for all the premium loans.

    liquidated
      loan:
      A
      mortgage loan for which 

    · the
      related mortgaged property has been acquired, liquidated or foreclosed, and
      the
      relevant servicer determines that all liquidation proceeds it expects to recover
      have been recovered, or 

    · the
      related mortgaged property is retained or sold by the mortgagor, and the
      relevant servicer has accepted payment from the mortgagor in consideration
      for
      the release of the mortgage in an amount that is less than the outstanding
      principal balance of the mortgage loan as a result of a determination by the
      relevant servicer that the potential liquidation expenses for the mortgage
      loan
      would exceed the amount by which the cash portion of such payment is less than
      the outstanding principal balance of the mortgage loan.

    liquidated
      loan loss:
      For a
      distribution day, the aggregate losses for each mortgage loan that became a
      liquidated loan prior to the first day of the month that contains the
      distribution day, which for each such liquidated loan will equal the excess
      of

    · (A) the
      unpaid principal balance of the mortgage loan on the first day of the preceding
      month, plus (B) accrued interest in accordance with the amortization
      schedule at the time applicable to the mortgage loan at the applicable mortgage
      note rate from the first day of the month as to which interest was last paid
      on
      the mortgage loan through the last day of the month in which the mortgage loan
      became a liquidated loan, over 

    · the
      net
      liquidation proceeds for the mortgage loan.

    Each
      liquidated loan loss will have an interest portion and a principal portion.
      If
      net liquidation proceeds for the mortgage loan exceed the accrued interest
      described in clause (B) above, the interest
      portion of the liquidated loan loss
      will be
      zero; otherwise, the interest portion of the liquidated loan loss will be the
      excess of the accrued interest described in clause (B) above over such net
      liquidation proceeds. The principal
      portion of a liquidated loan loss
      will
      equal the liquidated loan loss minus the interest portion of the liquidated
      loan
      loss. 

    liquidation
      expenses:
      For a
      liquidated loan, out-of-pocket expenses paid or incurred by or for the account
      of the relevant servicer or the Trust Fund for (a) property protection
      expenses, (b) property sales expenses, (c) foreclosure costs,
      including court costs and reasonable attorneys’ fees, (d) similar expenses
      reasonably paid or incurred in connection with the liquidation of the liquidated
      loan, (e) servicing fees not previously paid on the liquidated loan, and
      (f) any tax imposed on the Trust Fund with respect to a liquidated loan or
      property received by deed in lieu of foreclosure.

    liquidation
      proceeds:
      For a
      period, the amounts received by the relevant servicer in

    

    
      
        
           

        

        
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    connection
      with the liquidation of a liquidated loan, whether through judicial or
      non-judicial foreclosure, proceeds of insurance policies, condemnation proceeds,
      proceeds of a deficiency action (less amounts retained by CitiMortgage pursuant
      to section 3.12), or otherwise, including payments received from the mortgagor
      for the liquidated loan, other than amounts required to be paid to the mortgagor
      pursuant to the terms of the liquidated loan or to be applied otherwise pursuant
      to law.

    loss
      recovery:
      For a
      liquidated loan, any amounts received on the liquidated loan (net of expenses
      on
      the liquidated loan) for any month after the month in which the mortgage loan
      becomes a liquidated loan, that are not applied to the reduction of aggregate
      outstanding advances for the liquidated loan.

    master
      servicing fee:
      The
      amount payable to CitiMortgage pursuant to section 3.7.

    master
      servicing fee rate:
      The per
      annum rate agreed between CitiMortgage and a third-party servicer for
      calculating the master servicing fee. The monthly
      master
      servicing fee rate will be one-twelfth of the master servicing fee rate.

    month:
      A
      calendar month.

    Moody’s:
      Moody’s
      Investors Service, Inc.

    mortgage:
      For a
      mortgage loan, the mortgage or deed of trust creating a first lien on and an
      interest (a) for a mortgage loan relating to a cooperative apartment in a
      cooperative housing corporation, in the mortgagor’s interest therein securing a
      mortgage note, and (b) for other cases, in real property securing a
      mortgage note.

    mortgage
      documents:
      All
      documents contained in the mortgage file.

    mortgage
      file:
      The
      mortgage documents listed in section 2.1 pertaining to a particular mortgage
      loan and any additional documents required to be added to such documents
      pursuant to this agreement.

    mortgage
      loan:
      At any
      time, the indebtedness of a mortgagor evidenced by a mortgage note that is
      secured by real property (or shares evidencing ownership interest in a
      cooperative apartment in a cooperative housing corporation) and that is sold
      and
      assigned to the Trustee and held at such time in the Trust Fund pursuant to
      this
      agreement, the mortgage loans originally so held being identified in the
      mortgage loan schedule.

    mortgage
      loan schedule:
      The
      list of mortgage loans transferred to the Trustee as part of the Trust Fund,
      attached as exhibit B, or separately delivered, in physical or electronic form,
      to the Trustee.

    mortgage
      note:
      For a
      mortgage loan, the promissory note or other evidence of indebtedness of the
      mortgagor.

    Mortgage
      Note Custodian:
      The
      Mortgage Document Custodian is also designated by CMSI
      as the
      Mortgage Note Custodian. At any time that the rating agencies’ respective rating
      of Citigroup Inc.’s long-term senior debt is below the respective rating
      assigned by each such rating agency to the certificates, the Mortgage Note
      Custodian may not be an affiliate of CMSI.

    mortgage
      note rate:
      For a
      mortgage loan, the annual rate per annum at which interest accrues on the
      mortgage loan.

    mortgaged
      property:
      Any
      real property subject to a mortgage, or any cooperative apartment in a
      cooperative housing corporation.

    mortgagor:
      The
      obligor on a mortgage note.

    multiple-pool
      series:
      A
      series in which the mortgage loans are divided into two or more pools for
      purposes of allocations and distributions. Each series is either a single-pool
      series or a multiple-pool series.

    net
      liquidation proceeds:
      For a
      period, the aggregate amount of liquidation proceeds for a liquidated loan,
      net
      of related

    

    
      
        
           

        

        
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    liquidation
      expenses not previously recovered. 

    net
      REO
      proceeds:
      For a
REO
      loan,
REO
      proceeds
      net of any related expenses of the relevant servicer.

    net
      Paying Agent advances:
      For a
      period, the amount (which may be negative) obtained by subtracting the amount
      of
      any reimbursements for Paying Agent advances received in the period from the
      aggregate amount of Paying Agent advances made in the period.

    net
      voluntary advances:
      For a
      period, the amount (which may be negative) obtained by subtracting the amount
      of
      any reimbursements for voluntary advances received in the period from the
      aggregate amount of voluntary advances made in the period.

    nonrecoverable
      advance:
      Any
      portion of a voluntary advance or Paying Agent advance previously made or
      proposed to be made in respect of a mortgage loan that has not been previously
      reimbursed to the relevant servicer or the Paying Agent and that, in the good
      faith judgment of such person, would not be ultimately recoverable from
      liquidation proceeds or other recoveries in respect of the related mortgage
      loan. Nonrecoverable advances also include any advance by CitiMortgage
      of part or all of the shortfall in interest collections on a mortgage loan
      due
      to the federal Servicemembers Civil Relief Act or any similar state legislation
      that cannot be recouped from later payments on the mortgage loan. The
      determination by such person that it has made a nonrecoverable advance or that
      any proposed advance, if made, would be a nonrecoverable advance, will be
      evidenced by a certification of a Servicing Officer delivered to the Trustee
      and
      the Paying Agent and detailing the basis for such determination, but any delay
      or failure to send such certification will not impair such person’s right to
      withhold or recover such advance. 

    non-subordinated
      losses:
      (1) Special hazard, fraud or bankruptcy losses that exceed the
      then-applicable limit for that type of loss, (2) realized losses from
      extraordinary events, and (3) interest shortfalls due to limitations on
      interest rates mandated by the federal Servicemembers Civil Relief Act or any
      comparable state laws. 

    non-supported
      prepayment interest shortfall:
      For a
      distribution day and a class (other than a PO class), the class’s proportional
      share, based on interest accrued, of the sum of (1) for affiliated mortgage
      loans, the excess, if any, of the prepayment interest shortfalls on such
      mortgage loans for that distribution day over the amount deposited in the
      distribution account by CitiMortgage pursuant to section 3.4 in connection
      with
      prepayment interest shortfalls, and (2) for third-party mortgage loans, any
      excess of the prepayment interest shortfalls on such mortgage loans for that
      distribution day over the aggregate amount deposited in the certificate account
      in respect thereof by the applicable third-party servicers as required by
      section 3.4 and the Guide. 

    officer’s
      certificate:
      A
      certification signed by an Authorized Officer of CitiMortgage or CMSI
      and
      delivered to the Trustee or Paying Agent.

    opinion
      of counsel:
      A
      written opinion of counsel, who (unless otherwise specified herein) may be
      counsel for, or an employee of, CMSI
      or an
      affiliate of CMSI,
      which
      counsel will be reasonably acceptable to the Trustee.

    order
      of seniority:
      For the
      target-rate classes, the following order: the senior classes, followed by
      classes B-1, B-2, B-3, B-4, B-5 and B-6.

    order
      of subordination:
      For the
      target-rate classes, the following order: classes B-6, B-5,

    

    
      
        
           

        

        
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    B-4,
      B-3,
      B-2 and B-1, followed by the senior classes.

    original
      value:
      For the
      mortgaged property underlying a mortgage loan, the lesser of 

    · the
      sales
      price of the mortgaged property and 

    · its
      appraisal value determined pursuant to an appraisal made in connection with
      origination of the mortgage loan, except that the original appraisal of the
      mortgaged property may be used for a refinanced mortgage loan the unpaid
      principal balance of which, after refinancing, does not exceed the unpaid
      principal balance of the original mortgage loan at the time of refinancing
      by an
      amount greater than the amount of the closing costs associated with the
      refinancing.

    The
      original
      value
      of a
      mortgage loan is the original value of the mortgaged property underlying the
      mortgage loan plus the value of any other property securing the mortgage
      loan.

    Originator:
      The
      affiliate or affiliates of CMSI,
      or the
      third-party originators, from which CMSI
      is
      acquiring the mortgage loans.

    outstanding:
      (1) For certificates as of any date, all certificates previously
      authenticated and delivered under this agreement except:

    (i)
      certificates that have been canceled by the Certificate Registrar or delivered
      to the Certificate Registrar for cancellation;

    (ii)
      certificates for which money for a distribution in the necessary amount to
      reduce the principal balance to zero has been deposited with the Paying Agent
      in
      trust for the holders of such certificates; provided, however, that if a
      distribution in reduction of the principal balance of such certificates to
      zero
      will be made, notice of the distribution has been duly given pursuant to this
      agreement or provision therefor, satisfactory to the Trustee, has been
      made;

    (iii)
      certificates in exchange for or in lieu of which other certificates have been
      authenticated and delivered pursuant to this agreement unless proof satisfactory
      to the Certificate Registrar is presented that any such certificates are held
      by
      a protected purchaser under Article 8 of the Uniform Commercial Code in effect
      in the applicable jurisdiction; and

    (iv)
      certificates alleged to have been destroyed, lost or stolen for which
      replacement certificates have been issued as provided for in section 5.3 and
      authenticated and delivered pursuant to this agreement;

    provided,
      however, that in determining whether the holders of the requisite percentage
      of
      the aggregate principal balance or percentage interest of any outstanding
      certificates or of the outstanding certificates of any one or more classes
      have
      given any request, demand, authorization, direction, notice, consent or waiver,
      such percentage will be based on the principal balance of such certificate
      and
      provided, further, certificates owned by CMSI
      or any
      other obligor upon the certificates or any affiliate of CMSI
      or such
      other obligor will be disregarded and deemed not to be outstanding, except
      that,
      in determining whether the Trustee will be protected in relying upon any such
      request, demand, authorization, direction, notice, consent, or waiver, only
      certificates which the Trustee knows to be so owned will be so disregarded
      and
      except that where CMSI
      or any
      other obligor upon the certificates or any affiliate of CMSI
      or such
      other obligor will be owner of 100% of the aggregate principal balance or
      percentage interest of any outstanding certificates, CMSI
      or such
      other obligor or affiliate will be permitted to give any request, demand,
      authorization,

    

    
      
        
           

        

        
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    direction,
      notice, consent or waiver hereunder. Certificates so owned that have been
      pledged in good faith may be regarded as outstanding if the pledgee establishes
      to the satisfaction of the Trustee the pledgee’s right so to act with respect to
      such certificates and that the pledgee is not CMSI
      or any
      other obligor upon the certificates or any affiliate of CMSI
      or such
      other obligor.

    (2)
      for a
      class for any day, a class with a non-zero principal balance or non-zero
      notional balance on that day, and 

    (3)
      for a
      mortgage loan, for the first day of a month, a mortgage loan that, prior to
      such
      first day, was not the subject of a principal prepayment in full, did not become
      a liquidated loan, and was not purchased pursuant to section 2.2 or
      2.3.

    Participant:
      A
      participating organization in the Clearing Agency.

    pass-through
      rate:
      For a
      mortgage loan for any date or period, the applicable mortgage note rate, minus
      

    
      	
              ·

            	
              for
                an affiliated mortgage loan, the affiliated servicing fee rate, and
                

            

    

    
      	
              ·

            	
              for
                a third-party mortgage loan, the sum of the third-party servicing
                fee rate
                and the master servicing fee rate. 

            

    

    Any
      regular monthly remittance of interest at the pass-through rate for a mortgage
      loan is based upon annual interest at that rate on the scheduled principal
      balance as of the first day of the month of the mortgage loan divided by twelve.
      Interest at the pass-through rate will be computed on the basis of a 360-day
      year, each month being assumed to have 30 days. The monthly
      pass-through rate will be one-twelfth of the pass-through rate.

    (Any
      partial remittance of interest at such rate by reason of a full principal
      prepayment is based upon annual interest at that rate on the prepaid principal
      balance of the related mortgage loan, multiplied by a fraction the numerator
      of
      which is the actual number of days elapsed in the month of the prepayment to
      the
      date of the prepayment, and the denominator of which is 360. For affiliated
      mortgage loans, and some or all of the third-party mortgage loans, the mortgagor
      is not required to pay interest on a partial principal prepayment that is
      received during a month. The amounts required to be paid pursuant to section
      3.4
      are in addition to any interest payments made by mortgagors and passed through
      on full and partial prepayments.)

    percentage
      interest:
      For a
      class of residual certificates, if the residual certificate has a principal
      balance as specified in the Series Terms, the ratio of the initial principal
      balance of the residual certificate to the aggregate initial principal balance
      of the entire class, expressed as a percentage; if the residual certificate
      does
      not have a principal balance, the portion represented by such residual
      certificate (expressed as a percentage) of the total ownership interest in
      the
      applicable constituent REMIC
      represented by all residual certificates of the class. For a certificate of
      an
      IO class, the ratio of the notional balance of the certificate to the aggregate
      notional balance of the entire class.

    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.

    PO
      class:
      A class
      that has a principal balance and receives principal distributions, but does
      not
      have a certificate rate and does not receive interest
      distributions.

    PO
      loan:
      A
      mortgage loan that has a principal balance, but on which no interest is paid
      by
      the mortgagor.

    PO
      strip:
      The
      ratio-stripped PO loans for all the discount loans.

    pool:
      A pool
      of mortgage loans.

    

    
      
        
           

        

        
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    pool
      distribution amount:
      For a
      distribution day and a mortgage loan pool, the funds eligible for distribution
      to the related classes on that distribution day, being all amounts deposited
      into the certificate account relating to that pool, but excluding the
      following:

    (a) uncommitted
      cash that will not be used on the distribution day for an uncommitted cash
      advance;

    (b) all
      permitted withdrawals from the certificate account pursuant to section 3.8;
      and

    (c) all
      income from Eligible Investments that are held in an investment
      account.

    predatory
      lending law:
      The
      Georgia Fair Lending Act, the Maine Consumer Credit Code - Truth-in-Lending,
      the
      New Jersey Home Ownership Security Act of 2002, the New Mexico Home Loan
      Protection Act, the New York Predatory Lending Act, or any similar state, local
      or federal law that regulates high-cost mortgage loans.

    Predecessor
      Certificates:
      For a
      particular certificate of a class, every previous certificate of that class
      evidencing all or a portion of the same principal balance, notional balance
      or
      percentage interest as that evidenced by the particular certificate; for the
      purpose of this definition, any certificate authenticated and delivered under
      section 5.3 in lieu of a lost, destroyed or stolen certificate will be deemed
      to
      evidence the same principal balance, notional balance or percentage interest,
      as
      the case may be, as the lost, destroyed or stolen certificate.

    premium
      loan:
      A
      mortgage loan having a pass-through rate equal to or greater than the target
      rate.

    prepayment
      interest shortfall:
      For a
      mortgage loan that was the subject of a principal prepayment applied during
      the
      preceding month, an amount equal to (1) one month of interest on the
      principal prepayment at the pass-through rate, less (2) the amount of any
      interest (adjusted to the pass-through rate) on the principal prepayment
      received from the mortgagor.

    primary
      mortgage insurance certificate:
      The
      certificate of primary mortgage insurance relating to a particular mortgage
      loan
      to the extent initially set forth in the mortgage loan schedule.

    principal
      prepayment:
      For a
      mortgage loan, a payment of principal on the mortgage loan that is received
      in
      advance of the date it is scheduled to be paid and that is not accompanied
      by an
      amount representing scheduled interest for any month subsequent to the month
      of
      prepayment, but excluding any proceeds of or advances on a liquidated
      loan.

    private
      certificates:
      The
      residual certificates and certificates of classes B-4 through B-6 and, unless
      otherwise stated in the Series Terms, any ratio-stripped IO
      classes.

    Proceeding:
      Any
      suit in equity, action at law or other judicial or administrative
      proceeding.

    property
      protection expenses:
      For
      mortgage loans, expenses paid or incurred by or for the account of CitiMortgage
      or the Trust Fund in accordance with the related mortgages for (a) real estate
      property taxes and property repair, replacement protection and preservation
      expenses, and (b) similar expenses reasonably paid or incurred to preserve
      or
      protect the value of the mortgages.

    Qualified
      GIC:
      A GIC,
      assigned to the Trustee or Paying Agent, or entered into by the Trustee or
      Paying Agent at the direction of CMSI,
      on or
      before the closing date, providing for the investment of funds insuring a
      minimum or fixed rate of return on investments of such funds, which contract
      or
      surety bond will

    (a) be
      an
      obligation of an insurance company, trust company, commercial bank

    

    
      
        
           

        

        
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    (which
      may be Citibank, N.A. or a Citibank banking affiliate) or other entity whose
      credit standing is confirmed in writing as acceptable by each rating
      agency;

    (b) provide
      that the Trustee or the Paying Agent may exercise all of the rights of
CMSI
      under
      such contract or surety bond without the necessity of the taking of any action
      by CMSI;

    (c) provide
      that if at any time (subject to the second proviso of this section (c)) the
      then
      current credit standing of the obligor under such guaranteed investment contract
      is such that continued investment pursuant to such contract of funds included
      in
      the Trust Fund would result in a downgrading of any rating of any class of
      the
      certificates, the Trustee or the Paying Agent may terminate such contract and
      be
      entitled to the return of all funds previously invested thereunder, together
      with accrued interest thereon at the interest rate provided under such contract
      through the date of delivery of such funds to the Trustee or the Paying Agent,
      provided that the Trustee or the Paying Agent will not be charged with knowledge
      of any such potential downgrading unless it will have received written notice
      of
      such potentiality from the provider of the GIC which must be obligated to give
      such notice at least once per year; provided, further, that upon any such event
      CMSI,
      by
      written notice to the Trustee or the Paying Agent, may replace such contract
      with a substitute GIC having substantially the same terms (including without
      limitation a rate of return at least as high as the contract being replaced)
      so
      long as such substitute contract has an obligor with a credit standing no less
      than the credit standing of the obligor under the contract to be replaced at
      the
      time the contract was executed and such fact is certified by CMSI
      to the
      Trustee or the Paying Agent;

    (d) provide
      that the Trustee’s interest therein will be transferable to any successor
      trustee hereunder;

    (e) provide
      that the funds invested thereunder and accrued interest thereon be available
      not
      later than the day prior to any distribution day on which such funds may be
      required for distribution hereunder; and

    (f) meet
      such
      other standards as may be specified in the Series Terms.

    Qualified
      Nominee:
      A
      person (who may not be CMSI
      or an
      affiliate of CMSI)
      in
      whose name Eligible Investments held by the Trustee or Paying Agent may be
      registered as nominee of the Trustee or the Paying Agent in lieu of registration
      in the name of the Trustee or the Paying Agent, provided that the following
      conditions will be satisfied in connection with such registration:

    (a) the
      instruments governing the creation and operation of the nominee provide that
      neither the nominee nor any owner of an interest in the nominee (other than
      the
      Trustee or the Paying Agent) will have any interest, beneficial or otherwise,
      in
      any Eligible Investments held in the name of the nominee, except for the purpose
      of transferring and holding legal title thereto;

    (b) the
      nominee and the Trustee or the Paying Agent have entered into a binding
      agreement in substantially the form to be provided by CMSI
      establishing that any Eligible Investments held in the name of the nominee
      are
      to be held by the nominee as agent (other than commission agent or broker)
      or
      nominee for the account of the Trustee; and

    (c) in
      connection with the registration of any Eligible Investment in the name of
      the
      nominee, all requirements under applicable governmental regulations necessary
      to
      effect a valid registration of transfer of such Eligible Investment are complied
      with as evidenced to the Trustee and the Paying

    

    
      
        
           

        

        
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    Agent
      upon its request by an opinion of counsel.

    ratio-stripped
      IO class:
      An IO
      class with an initial notional balance equal to the initial notional balance
      of
      one or more IO strips, and that receives interest distributions solely from
      distribution on those strips.

    ratio-stripped
      IO loan:
      For any
      premium loan with a pass-through rate greater than the target rate, a single
      hypothetical IO loan that, combined with a single hypothetical target-rate
      loan,
      has the same interest and principal payments as the premium loan.

    Example:
      For a premium loan with a $100,000 principal balance and a pass-through rate
      1%
      per annum greater than the target rate, the (hypothetical) ratio-stripped IO
      loan will have a notional balance of $100,000 and a pass-through rate of 1%
      per
      annum, and the (hypothetical) target-rate loan will have a principal balance
      of
      $100,000 and a pass-through rate equal to the target rate.

    ratio-stripped
      PO class:
      A PO
      class whose initial principal balance equals the initial principal balance
      of
      one or more PO strips (rounded down to the nearest whole dollar), and that
      receives principal distributions solely from distribution on those strips,
      or
      from reimbursements from subordinated classes.

    ratio-stripped
      PO loan:
      For any
      discount loan, a single hypothetical PO loan that, combined with a single
      hypothetical target-rate loan, has the same interest and principal payments
      as
      the original discount loan.

    Example:
      For a discount loan with a $100,000 principal balance and a pass-through rate
      1%
      per annum less than the target rate of 5% per annum, the (hypothetical)
      ratio-stripped PO loan will have a principal balance of $20,000 and a
      pass-through rate of 0%, and the (hypothetical) target-rate loan will have
      a
      principal balance of $80,000 and a pass-through rate equal to the target
      rate.

    realized
      losses:
      For a
      distribution day, liquidated loan losses (including special hazard losses and
      fraud losses) and bankruptcy losses incurred in the preceding month. For a
      realized loss consisting of a liquidated loan loss, the interest
      and
principal
      portions
      of the
      realized loss will equal the interest and principal portions of the liquidated
      loan loss.

    record
      date:
      For a
      distribution day, the close of business on (a) for a LIBOR
      class,
      the last day (whether or not a business day) of its last LIBOR
      accrual
      period preceding the distribution day, and (b) for any other class, the last
      day
      of the preceding month.

    relevant
      servicer:
      CitiMortgage or a third-party servicer, as the context requires.

    REMIC:
      A “real
      estate mortgage investment conduit” within the meaning of Internal Revenue Code
      Section 860D. References to the “REMIC”
are
      to
      the constituent REMICs
      constituted by the Trust Fund.

    REMIC
      Provisions:
      The
      provisions of the federal income tax law relating to REMICs,
      which
      appear at Sections 860A through 860G of the Internal Revenue Code.

    REO
      loan:
      A
      mortgage loan that is not a liquidated loan and as to which the related
      mortgaged property is held as part of the Trust Fund.

    REO
      proceeds:
      Proceeds, net of any related expenses, received in respect of any REO
      loan
      (including, without limitation, proceeds from the rental of the related
      mortgaged property).

    REO
      property:
      A
      mortgaged property acquired by the Trust Fund through foreclosure or
      deed-in-lieu of foreclosure in connection with a defaulted mortgage loan or
      otherwise treated as having been acquired pursuant to the REMIC
      Provisions.

    Required
      Amount of Certificates:
      (i) 2/3
      or more of the aggregate voting interest of the outstanding certificates, if
      affected by the

    

    
      
        
           

        

        
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    occurrence
      of an Event of Default and (ii) 2/3 or more of the aggregate outstanding
      percentage interest of the residual certificates, if affected by such an Event
      of Default.

    Responsible
      Officer
      of the
      Trustee means an officer who is employed in the Corporate Trust Department
      or a
      similar group for the Trustee with direct responsibility for the administration
      of this agreement.

    S&P:
      Standard and Poor’s Ratings Services, a division of The McGraw- Hill Companies,
      Inc.

    scheduled
      monthly loan payment:
      For a
      mortgage loan (including a REO
      loan)
      and a distribution day, the payment of principal and interest due on the first
      day of the month in which the distribution day occurs in accordance with the
      amortization schedule applicable to the mortgage loan at that time (after
      adjustment for any partial principal prepayments or deficient valuations
      occurring prior to such first day of the month but before any adjustment to
      such
      amortization schedule other than deficient valuations by reason of any
      bankruptcy, or similar proceeding or any moratorium or similar waiver or grace
      period). 

    scheduled
      principal balance:
      For one
      or more mortgage loans on a date, the initial principal balance of the loans,
      less
      the sum
      of (a) the aggregate of the principal portion of all scheduled monthly loan
      payments required to be made on the loans on or before the first day of the
      month in which the date falls (whether or not received), provided
      that
      after the bankruptcy coverage termination date, the scheduled principal balance
      will not be reduced by the principal portion of any debt service reductions,
      and
      (b) any principal prepayments on the loans received or posted before the close
      of business on the last business day of the preceding month.

    scheduled
      principal payments:
      For one
      or more mortgage loans for a distribution day, the principal portion of the
      scheduled monthly loan payments on the loans for the distribution day.

    scheduled
      servicing fee:
      For any
      month, a fee equal to

    · for
      each
      affiliated mortgage loan, the scheduled principal balance of the mortgage loan
      as of the close of business on the last day of the preceding month, multiplied
      by the monthly affiliated servicing fee rate, and

    · for
      each
      third-party mortgage loan, the scheduled principal balance of the mortgage
      loan
      as of the close of business on the first day of the month, multiplied by the
      relevant monthly third-party servicing fee rate.

    Securities
      Act:
      The
      Securities Act of 1933.

    senior
      to:
      A
      target-rate class is senior to another target-rate class if it is ranked above
      it in order of seniority.

    Servicing
      Officer:
      Any
      officer of CitiMortgage, a delegated servicer or a third-party servicer involved
      in, or responsible for, the administration and servicing of the Trust Fund
      whose
      name appears on a list of servicing officers attached to an officer’s
      certificate furnished to the Trustee by CitiMortgage, as such list may from
      time
      to time be amended.

    single
      certificate:
      A
      single certificate evidences (a) for a residual certificate, 1% percentage
      interest, (b) for a certificate of an IO class, $1,000 initial notional balance,
      and (c) for a certificate of any other class, $1,000 initial principal
      balance.

    single-pool
      series.
      A
      series in which the mortgage loans are not divided into two or more pools for
      purposes of allocations and distributions. Each series is either a single-pool
      series or a multiple-pool series.

    special
      hazard loss:
      (i) A
      liquidated loan loss suffered by a mortgaged property on account of direct
      physical loss, exclusive of (a) any loss covered by a hazard policy or
      a

    

    
      
        
           

        

        
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    flood
      insurance policy maintained for the mortgaged property pursuant to section
      3.11,
      and (b) any loss caused by or resulting from:

    (1) normal
      wear and tear;

    (2) infidelity,
      conversion or other dishonest act on the part of the Trustee, CitiMortgage
      or
      any of their agents, employees or delegees; or

    (3) errors
      in
      design, faulty workmanship or faulty materials, unless the collapse of the
      property or a part thereof ensues; or

    (ii)
      a
      liquidated loan loss suffered by the Trust Fund arising from or related to
      the
      presence or suspected presence of hazardous wastes or hazardous substances
      on a
      mortgaged property, unless the loss to a mortgaged property is covered by a
      hazard policy or a flood insurance policy maintained for the mortgaged property
      pursuant to section 3.11.

    special
      hazard loss limit:
      If an
      initial special hazard loss limit is stated in the Series Terms, for a
      distribution day, the initial special hazard loss limit minus the sum of
      (i) the aggregate amount of special hazard losses and (ii) the Adjustment
      Amount (as defined below) as most recently calculated. For each anniversary
      of
      the cut-off date, the Adjustment Amount will be the excess of the amount
      calculated in accordance with the preceding sentence (without giving effect
      to
      the deduction of the Adjustment Amount for such anniversary) over the greater
      of
      (A) the product of the special hazard percentage for such anniversary
      multiplied by the aggregate scheduled principal balance of all the mortgage
      loans on the distribution day immediately preceding such anniversary and
      (B) twice the scheduled principal balance of the mortgage loan in the Trust
      Fund which has the largest scheduled principal balance on the distribution
      day
      immediately preceding such anniversary.

    special
      hazard percentage:
      As of
      each anniversary of the cut-off date, the greater of (i) 1% and
      (ii) the largest percentage obtained by dividing the aggregate scheduled
      principal balances (as of the immediately preceding distribution day) of the
      mortgage loans secured by mortgaged properties located in a single, five-digit
      ZIP
      code
      area
      in the State of California by the aggregate scheduled principal balance of
      all
      the mortgage loans as of such anniversary.

    subordinated
      losses:
      Realized losses other than non-subordinated losses.

    subordinate
      to:
      A
      target-rate class is subordinate to another target-rate class if it is ranked
      below it in order of seniority.

    subordination
      depletion date:
      The
      first distribution day for which the principal balance of the subordinated
      classes on the preceding day is zero.

    target-rate
      class percentage:
      For one
      or more target-rate classes, the ratio of the classes’ principal balance to the
      principal balance of all target-rate classes, expressed as a
      percentage.

    target-rate
      loan:
      For any
      mortgage loan, a single hypothetical mortgage loan that has a pass-through
      rate
      equal to the target rate, and

    (i)
      if
      the mortgage loan has a pass-through rate equal to or greater than the target
      rate, has the same principal balance as the mortgage loan, and

    (ii)
      if
      the mortgage loan is a discount loan, has a principal balance equal to the
      product of (A) the principal balance of the mortgage loan and (B) the
      ratio of the pass-through rate for the mortgage loan to the
      target-rate.

    target-rate
      strip:
      The
      mortgage loan pool formed of the target-rate loans for all the mortgage loans.
      

    

    
      
        
           

        

        
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    third-party
      servicing fee:
      For any
      month, a fee for each third-party mortgage loan equal to the lesser of
      (a) the scheduled principal balance of the mortgage loan as of the close of
      business on the first day of the month, multiplied by the relevant monthly
      third-party servicing fee rate, and (b) the excess of the interest payment
      received on the mortgage loan for the month (including interest payments
      included in liquidation or insurance proceeds) over the amount of the interest
      payment to be deposited in the certificate account. 

    third-party
      servicing fee rate:
      For a
      third-party mortgage loan other than a specially serviced mortgage loan, the
      per
      annum rate specified as such on schedule B-TP to exhibit B under the heading
      “Sub Fee,” reduced (but not below zero) by any applicable master servicing fee
      rate, and for a specially serviced mortgage loan, the per annum servicing fee
      rate for the special servicer provided for in or pursuant to the special
      servicing agreement. The monthly
      third-party servicing fee rate will be one-twelfth of the relevant third-party
      servicing fee rate.

    Transfer
      Instrument:
      A deed
      transferring an interest in property subject to a mortgage.

    Trust
      Fund:
      The
      corpus of the trust created by this agreement, consisting of the mortgage loans,
      the certificate account, any pooling, lower-tier, or upper-tier REMIC
      account,
REO
      property
      and the primary mortgage insurance certificates, any other insurance policies
      for the mortgage loans, any retail reserve fund and the rights of the Trustee
      under any reserve fund and any certificate insurance policy.

    uncommitted
      cash:
      For a
      distribution day, any cash in the certificate account representing principal
      prepayments posted or liquidation proceeds deposited on or after the first
      day
      of the month immediately preceding such distribution day and all related
      payments of interest and all payments which represent early receipt of scheduled
      payments of principal and interest due on a date or dates subsequent to such
      first day of the month.

    unscheduled
      principal payments:
      For one
      or more mortgage loans for a distribution day, the sum of

    · all
      principal prepayments on the mortgage loans received by CitiMortgage or a
      third-party servicer during the month preceding the distribution day, up to
      the
      scheduled principal balance, in each case, of the mortgage loan, 

    · the
      greater of (1) aggregate net liquidation proceeds from any of the mortgage
      loans that became a Liquidated Loan during the month preceding such distribution
      day, minus
      (a) the portion of such proceeds representing interest, and (b) any
      unreimbursed advances of principal made by the CitiMortgage, a third-party
      servicer, or the Paying Agent on such mortgage loans, and (2) the aggregate
      scheduled principal balances of such mortgage loans for the distribution day,
      and

    · the
      scheduled principal balance of any of the mortgage loans that was repurchased
      by
CMSI
      during
      such month pursuant to section 2.3, “Repurchase or substitution of mortgage
      loans” below. 

    U.S.
      person:
      A
      citizen or resident of the United States of America, 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 of America, 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 U.S. federal income tax
      regardless of its source, or a trust if a court within the

    

    
      
        
           

        

        
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    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).

     

    1.2 Usages

    In
      this
      agreement and the certificates, unless otherwise stated or the context otherwise
      clearly requires, the following usages apply:

    · “This
      agreement,” “herein,” “hereof” and words of similar import when used in this
      agreement will refer to this agreement.

    · In
      computing periods from a specified date to a later specified date, the words
      “from” and “commencing on” (and the like) mean “from and including,” and the
      words “to,” “until” and “ending on” (and the like) mean “to but
      excluding.”

    · An
      action
      permitted under this agreement may be taken at any time and from time to time.
      Except as otherwise indicated, a permitted action may be taken in the actor’s
      sole discretion. References to a person’s taking action include the person’s
      refraining from action. Thus, a statement that a person “may take any action
      that ... “ means that a person may take or refrain from taking any action that
....

    · All
      indications of time of day mean New York City time.

    · “Including”
      means “including, but not limited to.” “A or B” means “A or B or
      both.”

    · References
      to an agreement (including this agreement) will refer to the agreement as
      amended at the relevant time.

    · References
      to numbered sections or paragraphs in this agreement will refer to sections
      or
      paragraphs of this agreement, and such section references will include all
      included sections. For example, a reference to section 6 will be to section
      6 of
      this agreement, and also to sections 4.1, 4.2, etc.
      

    · References
      to an exhibit in this agreement will refer to all included numbered subdivisions
      of the exhibit. For example, references to exhibit A will also refer to
      subdivisions A-1, A-2, etc.

    · References
      to a statute include all regulations promulgated under or implementing the
      statute, as in effect at the relevant time. References to a specific provision
      of a statute includes successor provisions.

    · References
      to any governmental or quasi-governmental agency or authority will include
      any
      successor agency or authority.

    · Where
      a
      decimal appears that has been shortened, it will be rounded according to the
      usual rules; that is, if the decimal is only shown to x places, the last number
      (in the xth place) will be raised by one if the following number (in the x+1st
      place) is 5, 6, 7, 8 or 9.

     

    1.3 Calculations
      respecting mortgage loans

    (a) In
      connection with all calculations required to be made pursuant to this agreement
      for remittances on any mortgage loan, any payments on the mortgage loans or
      any
      payments on any other assets included in a Trust Fund, the rules set forth
      in
      this section 1.2 will be applied.

    (b) Calculations
      for remittances on mortgage loans will be made on a
      mortgage-loan-by-mortgage-loan basis, based upon current information as to
      the
      terms of such mortgage loans and reports of payments received on such mortgage
      loans supplied to CitiMortgage by the person responsible for the servicing
      thereof and satisfying such requirement, if any, as may be set forth in section
      3.

    

    
      
        
           

        

        
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    (c) Each
      remittance receivable on a mortgage loan will be assumed to be received on
      the
      first day of the month.

     

    2 Transfer
      of mortgage loans and issuance of certificates; repurchase and
      substitution

     

    2.1 Transfer
      of mortgage loans

    (a) CMSI,
      as of
      the closing date, hereby transfers and assigns to the Trustee, without recourse,
      all of CMSI’s
      right,
      title and interest in and to 

    · the
      mortgage loans, including all remittances received or receivable by CMSI
      on or
      with respect to the mortgage loans (other than payments of principal and
      interest due and payable on the mortgage loans, and principal prepayments
      thereon received, on or before the cut-off date), and

    · the
      proceeds of any title, primary mortgage, hazard or other insurance policies
      related to the mortgage loans. 

    Such
      transfer and assignment is absolute, is made in exchange for the certificates
      described in section 12, and is intended by the parties to be a sale.
      Nonetheless, to the extent such transfer is held not to be a sale under
      applicable law, it is intended that this agreement shall be a security agreement
      under applicable law, and CMSI
      shall be
      deemed to have granted to the Trustee, for the benefit of the certificate
      holders and any Insurer, a security interest in the Trust Fund, including the
      mortgage loans, mortgage notes and related documents. CMSI
      will, at
      its own expense, take any action reasonably requested by the Trustee to confirm,
      perfect, and protect the priority of, the security interest granted hereby,
      including the filing of Uniform Commercial Code financing statements in the
      appropriate jurisdictions.

    CMSI
      will not
      transfer any other property to the Trust Fund except as expressly permitted
      by
      this agreement.

    The
      Trustee acknowledges receipt of the documents and other property referred to
      in
      section 2.1, and declares that the Trustee will hold such documents and other
      property, including property yet to be received in the Trust Fund, in trust,
      upon the trusts herein set forth, for the benefit of all present and future
      certificate holders and any Insurer. 

    (b) The
      Trustee and CitiMortgage have entered into a Mortgage
      Document Custodial Agreement
      substantially in the form of exhibit C with the Mortgage
      Document Custodian
      named in
      section 12.1. The Mortgage Document Custodian will hold the mortgage documents
      in trust for the Trustee and the benefit of the Trustee, any Insurer and all
      present and future certificate holders. The Mortgage Document Custodian may
      be
      the Trustee, any affiliate of the Trustee, an affiliate of CMSI,
      or an
      independent entity. 

    The
      Trustee may at any time remove the initial or any successor Mortgage Document
      Custodian, and enter into a Mortgage Document Custodial Agreement substantially
      in the form of exhibit C hereto pursuant to which the Trustee appoints a
      successor Mortgage Document Custodian to hold the Mortgage Documents in trust
      for the Trustee and the benefit of the Trustee, all present and future
      certificate holders, and any Insurer, which Agreement may provide that the
      Mortgage Document Custodian shall conduct the review of each Mortgage File
      required under the first paragraph of section 2.3(b), except that, if the
      Mortgage Document Custodian so appointed is CMSI
      or an
      affiliate of CMSI,
      the
      Trustee may conduct such review.

    (c) CMSI
      will on
      or before the closing date deliver to the Mortgage Document

    

    
      
        
           

        

        
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    Custodian
      on behalf of the Trustee to be held in trust the following documents or
      instruments for each mortgage loan (other than mortgage loans secured by shares
      in a cooperative housing corporation) (except to the extent CMSI
      is
      complying with section 2.1(f)):

    (i) The
      mortgage note, endorsed by manual or facsimile signature without recourse by
      the
      Originator or an affiliate of the Originator in blank or to the Trustee showing
      a complete chain of endorsements from the named payee to the Trustee or from
      the
      named payee to the affiliate of the Originator and from such affiliate to the
      Trustee, except that endorsement is not required where Mortgage Electronic
      Registration Systems, Inc. (MERS)
      is the
      named payee or the nominee of the named payee.

    (ii) The
      original recorded mortgage, with evidence of recording thereon or a copy of
      the
      mortgage certified by the public recording office in those jurisdictions where
      the public recording office retains the original.

    (iii) Any
      original assumption, modification, buydown or conversion-to-fixed-interest-rate
      agreement applicable to the mortgage.

    (iv) An
      assignment from the Originator or an affiliate of the Originator to the Trustee
      in recordable form of the mortgage which may be included, where permitted by
      local law, in a blanket assignment or assignments of the mortgage to the
      Trustee, including any intervening assignments and showing a complete chain
      of
      title from the original mortgagee named under the mortgage to the Originator
      or
      an affiliate of the Originator and to the Trustee, except
      that
      (x) if the mortgage is registered with MERS,
      only
      assignments from the origination of the mortgage to its assignment to
MERS
      will be
      required, and (y) if the mortgage was originated with MERS
      as the
      original mortgagee (a “MOM
      loan”),
      no interim assignment will be required.

    (v) The
      original or a copy of the title insurance policy (which may be a certificate
      or
      a short form policy relating to a master policy of title insurance) pertaining
      to the mortgaged property, or in the event such original title policy is
      unavailable, a copy of the preliminary title report and the lender’s recording
      instructions, with the original to be delivered within 180 days of the closing
      date or other evidence of title.

    (vi) Any
      related primary mortgage insurance certificate and related policy or a copy
      thereof.

    (d) CMSI
      will on
      or before the closing date deliver to the Mortgage Document Custodian on behalf
      of the Trustee to be held in trust the following documents or instruments for
      each mortgage loan secured by shares in a cooperative housing corporation
      (except to the extent CMSI
      is
      complying with section 2.1(f)):

    (i) The
      mortgage note, endorsed by manual or facsimile signature without recourse by
      the
      Originator or an affiliate of the Originator in blank or to the Trustee showing
      a complete chain of endorsements and assignments from the named payee to the
      Trustee or from the named payee to the affiliate of the Originator and from
      such
      affiliate to the Trustee.

    (ii) The
      original mortgage, with evidence of recording thereon (if recordation was
      required under applicable law).

    (iii) Any
      original assumption, modification, buydown or conversion-to-fixed-interest-rate
      agreement applicable to the mortgage.

    (iv) The
      original stocks, shares, membership certificate or other contractual agreement
      evidencing ownership;

    (v) The
      original stock power executed in blank.

    

    
      
        
           

        

        
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    (vi) The
      original executed security agreement or similar document and all assignments
      thereof showing a complete chain of assignment from the named secured party
      to
      the Trustee.

    (vii) The
      original executed proprietary lease or occupancy agreement and all assignments
      thereof showing a complete chain of assignment from the named secured party
      to
      the Trustee.

    (viii) The
      original executed recognition agreement and any executed assignments of
      recognition agreement showing a complete chain of assignment from the named
      secured party to the Trustee.

    (ix) (Except
      for mortgage loans (x) secured by mortgaged properties in the State of New
      Jersey or (y) originated prior to October 1988 and secured by mortgaged
      properties in the State of New York) the executed UCC-1 financing statement
      with
      evidence of recording thereon and executed original UCC-3 financing statements
      or other appropriate UCC financing statements required by state law, evidencing
      a complete and unbroken chain from the mortgagee to the Trustee with evidence
      of
      recording thereon (or in a form suitable for recordation).

    (x) Any
      related primary mortgage insurance certificate and related policy.

    (e) CMSI
      will,
      on
      or before the closing date, deposit in the certificate account 

    · all
      payments on the mortgage loans that
      CMSI
      receives
      after the cut-off date and before the closing date, to the extent such payments
      are being transferred and assigned to the Trustee under this agreement, except
      any portion of such payments on mortgage loans (including servicing fees) of
      a
      type not required to be deposited therein as specified in section 11 or the
      Series Terms, and

    · any
      amount required to be so deposited under the Series Terms.

    (f) If
      CMSI
      is
      required under this section 2.1 to deliver an original recorded mortgage or
      a
      completed assignment in recordable form to the Mortgage Document Custodian
      by
      the closing date, but cannot do so because of a delay in recording the mortgage,
      CMSI
      may
      instead

    · deliver
      a
      copy of the mortgage, provided that CMSI
      certifies that the original mortgage has been delivered to a title insurance
      company for recordation after receipt of its policy of title insurance or binder
      therefor (which may be a certificate relating to a master policy of title
      insurance), and 

    · an
      assignment to the Trustee completed except for recording information.

    In
      all
      such instances, CMSI
      will
      deliver the original recorded mortgage and completed assignment (if applicable)
      to the Mortgage Document Custodian promptly upon receipt of such mortgage.
      

    If
      an
      original recorded mortgage has been lost or misplaced, CMSI
      or the
      related title insurance company may deliver, in lieu of the mortgage, a copy
      of
      the mortgage bearing recordation information and certified as true and correct
      by the office in which the original mortgage was recorded. 

    If
      CMSI
      cannot
      deliver the original or a copy of a title insurance policy (which may be a
      certificate relating to a master policy of title insurance) for a mortgaged
      property to the Mortgage Document Custodian by the closing date because the
      policy is not yet available, CMSI
      may
      instead deliver a binder for the policy, and deliver the original or a copy
      of
      the policy to the Trustee when available. 

    If
      CMSI
      cannot
      deliver an original assumption, modification, buydown or
      conversion-to-fixed-interest-rate agreement to the Mortgage Document Custodian
      by the closing date, CMSI
      may
      instead deliver a certified copy thereof. CMSI
      will
      deliver

    

    
      
        
           

        

        
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    the
      original assumption, modification, buydown or conversion-to-fixed-interest-rate
      agreement to the Trustee promptly upon receipt thereof.

    CMSI
      will, at
      its own expense, prepare and deliver to the Mortgage Document Custodian each
      assignment referred to in clause (a)(iv) or (b)(vi) and (b)(ix) above as soon
      as
      practicable but not later than 60 days after the date of initial issuance of
      the
      certificates. For each mortgage relating to a mortgaged property located in
      a
      state for which the rating agencies require recordation of such assignments
      (as
      will be specified in the Series Terms or a CMSI
      officer’s certificate), CMSI
      intends
      to record the assignment in the appropriate public office for real property
      records (or supply the Mortgage Document Custodian with evidence of recordation)
      as soon as practicable after the initial issuance of the certificates. Except
      as
      provided in this section, neither CMSI
      nor any
      Originator or affiliate of any Originator will have any obligation to record
      any
      assignment of any mortgage in order to name the Trustee as mortgagee of record.
      The preceding sentence will not be in derogation of the obligation of
CMSI,
      the
      Originators and affiliates of the Originators to record (and supply the Mortgage
      Document Custodian with evidence thereof) assignments of mortgages required
      in
      order that CMSI,
      an
      Originator or an affiliate of an Originator be shown as mortgagee of record
      of
      each mortgage.

    CMSI
      will, at
      its own expense, record any UCC-3 financing statements not previously recorded,
      and will supply the Mortgage Document Custodian with evidence of the
      recordation. CMSI
      intends
      to effect recordation in the appropriate public office as soon as practicable
      after the initial issuance of the certificates.

    For
      mortgage loans that have been prepaid in full after the cut-off date and prior
      to the closing date, CMSI,
      in lieu
      of delivering the above documents to the Mortgage Document Custodian, will
      on
      the closing date deliver a certification of a Servicing Officer as set forth
      in
      section 3.13.

    (g)
      Concurrently with the transfer and assignment to the Trustee of the mortgage
      loans, the Trustee or the Authenticating Agent will, in accordance with a
      written order or request signed in CMSI’s
      name
      by an Authorized Officer, authenticate and deliver to or upon CMSI’s
      order,
      duly authenticated certificates in authorized denominations evidencing the
      entire ownership of the Trust Fund. The Trustee acknowledges that to the extent
      it holds any class P or class L regular interests, it holds such regular
      interests as assets of the lower-tier or upper-tier REMIC,
      as
      described in the Series Terms.

    (h)
      CMSI
      and the
      Trustee agree and understand that it is not intended that any mortgage loan
      be
      included in the Trust that is a “High-Cost Home Loan,” as defined in either the
      Indiana High Cost Home Loan Law, effective January 1, 2005, the New Jersey
      Home
      Ownership Security Act of 2002, effective November 27, 2003, or the New Mexico
      Home Loan Protection Act, effective January 1, 2004, or a “high cost home
      mortgage loan,” as defined in the Massachusetts Predatory Home Loan Practices
      Act, effective November 9, 2004.

     

    2.2 CMSI’s
      representations and warranties 

    CMSI
      represents and warrants to the Trustee and any Insurer that:

    (i) The
      information in exhibit B was true and correct in all material respects as of
      the
      dates respecting which such information is furnished, and the information
      provided to the rating agencies, including the loan

    

    
      
        
           

        

        
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    level
      detail, is true and correct according to rating agency
      requirements.

    (ii) As
      of the
      closing date, each mortgage will be a valid first lien on the property securing
      the related mortgage note subject only to 

    · the
      lien
      of current real property taxes and assessments as limited in clause (vi) below,
      

    · covenants,
      conditions and restrictions, rights of way, easements and other matters of
      public record as of the date of recording of the mortgage, which exceptions
      appearing of record are acceptable to mortgage lending institutions generally
      or
      specifically reflected in the appraisal obtained in connection with the
      origination of the related mortgage loan, 

    · other
      matters to which like properties are commonly subject that do not in the
      aggregate materially interfere with the benefits of the security intended to
      be
      provided by the mortgage, and 

    · for
      a
      mortgage on a cooperative apartment in a cooperative housing corporation, the
      right of the related cooperative to cancel the related shares and terminate
      the
      proprietary lease for unpaid assessments (general and special) owed by the
      mortgagor;

    (iii) Immediately
      before the transfer and assignment of the mortgage loans to the Trustee,
CMSI
      has good
      title to, and is the sole legal owner of, each mortgage loan (except as set
      forth in clause (v) below) and immediately upon the transfer and assignment,
      CMSI
      will
      have taken all steps necessary so that the Trustee will have good title to,
      and
      will be the sole legal owner of, each mortgage loan (except as set forth in
      clause (v) below);

    (iv) As
      of the
      cut-off date, no payment of principal of or interest on any mortgage loan was
      30
      days or more past due (a mortgage loan being considered 30 days past due in
      a
      given month when payment due on the first day of the prior month has not been
      made on or before the last day of such prior month) or has been 30 days or
      more
      past due more than once for the twelve months preceding the cut-off
      date;

    (v) As
      of the
      closing date, there is no mechanics’ lien or claim for work, labor or material
      affecting the mortgaged property that is or may be a lien prior to, or equal
      with, the lien of the mortgage except those that are insured against by the
      title insurance policy referred to in (x) below;

    (vi) As
      of the
      closing date, there is no delinquent tax or assessment lien against any
      mortgaged property;

    (vii) As
      of the
      closing date, there is no valid offset, defense or counterclaim to any mortgage
      note or mortgage, including the obligation of the mortgagor to pay the unpaid
      principal and interest on the mortgage note;

    (viii) As
      of the
      closing date, each mortgaged property is free of material damage and is in
      good
      repair;

    (ix) Each
      mortgage at the time it was originated complied in all material respects with
      applicable state, local and federal laws, including, without limitation, all
      applicable usury, equal credit opportunity, recording, disclosure and predatory
      lending laws. No mortgage loan is a high cost loan under the predatory lending
      law of any jurisdiction in which a mortgaged property is located, no mortgage
      loan is a “High Cost Loan” or “Covered Loan,” as such terms are defined in the
      current version of Standard & Poor’s LEVELS® Glossary, (Version 5.7 Revised,
      Appendix E), and no mortgage loan originated on or after October 1, 2002 through
      March 6, 2003 is governed by the Georgia Fair Lending Act; 

    (x)
      A
      lender’s title insurance policy or binder approved as such by Fannie Mae or
      Freddie Mac,
      or other
      assurance of title

    

    
      
        
           

        

        
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    customary
      in the relevant jurisdiction, was issued on the date of the origination of
      each
      mortgage loan (other than a mortgage loan for a cooperative apartment), and,
      as
      of the closing date, each such policy, binder or assurance is valid and in
      full
      force and effect;

    (xi)
      The
      mortgage loans conform in all material respects with their descriptions in
      the
      prospectus relating to the certificates;

    (xii)
      Each mortgage loan with an original principal balance exceeding 80% (or, for
      certain mortgage loans originated before 1995, 90%) of its original value is
      covered by primary mortgage insurance at least until its outstanding principal
      balance is less than or equal to 80% of the original value, either through
      principal payments by the mortgagor or as determined by a new appraisal
      delivered subsequent to origination. So long as it is in effect, the primary
      mortgage insurance covers losses from defaults in an amount equal to the excess,
      of the outstanding principal balance of the mortgage loan over 75% of the
      original value of the mortgage loan;

    (xiii) The
      original principal balance of each mortgage loan was not more than 95% of the
      original value of the mortgage loan;

    (xiv)
      For
      each buydown mortgage loan, the buydown funds deposited in the buydown account,
      if any, will be sufficient, after crediting interest at the rate per annum,
      if
      any, specified in the buydown agreement compounded monthly to the buydown
      account and adding the amounts required to be paid by the mortgagor, to make
      the
      scheduled payments stated in the mortgage note for the term of the buydown
      subsidy agreement; 

    (xv) Each
      mortgage loan is a “qualified mortgage” within the meaning of Section 860G(a)(3)
      of the Internal Revenue Code.

    The
      representations and warranties in this section 2.2 will survive delivery of
      the
      mortgage files to the Trustee. 

     

    2.3 Repurchase
      or substitution of mortgage loans 

    (a)
      Each
      of CMSI,
      CitiMortgage and the Trustee will promptly notify the other parties if it
      discovers a breach of any of the representations and warranties in section
      2.2
      that materially and adversely affects the interests of the certificate holders
      or any Insurer in a mortgage loan (including a mortgage loan substituted for
      a
      nonconforming mortgage loan pursuant to section 2.4) (a material
      breach).

    (b)
      Pursuant to the Mortgage Document Custodial Agreement, the Mortgage Document
      Custodian will review each mortgage file within 90 days after the closing date
      to ascertain that all required documents have been executed, received and
      recorded, if applicable, and that such documents relate to the mortgage loans
      identified in exhibit B. If the Mortgage Document Custodian finds that a
      document in a mortgage file is missing or materially defective, the Mortgage
      Document Custodian will promptly notify CitiMortgage and CMSI
      by
      e-mail.

    (c)
      If
CMSI
      is
      notified of a material breach, CMSI
      will
      have 60 days after the notice (or a longer period approved in advance in writing
      by a Responsible Officer of the Trustee) to cure the breach in all material
      respects, or to repurchase the mortgage loan or substitute eligible substitute
      mortgage loans, as provided in this section 2.3. 

    If
      CMSI
      is
      notified by the Mortgage Document Custodian that the documentation for a
      mortgage loan is defective, CMSI
      will
      have 180 days after the notice to cure the breach in all material respects,
      or
      to repurchase the mortgage loan

    

    
      
        
           

        

        
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    or
      substitute eligible substitute mortgage loans, as provided in this section
      2.3,
      except that CMSI
      will
      only have 90 days after the notice to cure, cure, repurchase, or substitute
      if
      the defect causes the mortgage loan to fail to be a “qualified mortgage” under
      Internal Revenue Code section 860G(a)(3).

    (d)
      Any
      repurchase by CMSI
      of a
      mortgage loan will be at a price equal to 

    (i) 100%
      of the scheduled principal balance of the mortgage loan on the date of
      repurchase, plus 

    (ii) accrued
      and unpaid interest thereon at the pass-through rate to the first day of the
      following month, plus 

    (iii) any
      costs and damages incurred by the Trust Fund in connection with any violation
      by
      such mortgage loan of any predatory lending law, plus 

    (iv) aggregate
      outstanding advances for the mortgage loan, to the extent not recovered in
      (ii)
      above. 

    (e)
      CMSI
      will pay
      the repurchase price to CitiMortgage, which will promptly deposit the repurchase
      price in the certificate account. A repurchase of a mortgage loan under this
      section 2.3 will be considered a prepayment in full of the mortgage loan on
      the
      date of repurchase. Upon the Trustee’s receipt of written notice of the deposit
      signed by an Authorized Officer of CitiMortgage, the Trustee will direct the
      Mortgage Document Custodian to release the related mortgage file to CMSI
      and will
      execute and deliver such instruments of transfer or assignment furnished to
      the
      Trustee, in each case without recourse, as CMSI
      reasonably requests, to vest the mortgage loan in CMSI.
      Repurchase of the mortgage loan by CMSI
      will be
      deemed to include the right to receive any remittance on the mortgage loan
      payable or received on or after the date of repurchase, and CitiMortgage will,
      upon receipt, promptly pay CMSI
      the
      amount of any such remittance. 

    (f)
      CMSI
      may,
      instead of repurchasing a mortgage loan pursuant to this section 2.3, substitute
      one or more eligible substitute mortgage loans (as defined below) for one or
      more nonconforming mortgage loans. Such a substitution will take place on a
      business day designated by CMSI
      (the
substitution
      day)
      occurring before the second anniversary of the startup day, subject to
      satisfaction of the conditions in section 2.1 and the following
      conditions:

    (i) no
      Event
      of Default is continuing; and

    (ii) the aggregate
      scheduled principal balance of all eligible substitute mortgage loans
      substituted on the substitution day (determined for each eligible substitute
      mortgage loan as of the substitution day) does not exceed 40% of the aggregate
      scheduled principal balance of all mortgage loans as of the closing
      date;

    (g)
      An
eligible
      substitute mortgage loan:
      is a
      mortgage loan 

    · for
      which
      all payments of principal and interest due on or before the substitution day
      have been received,

    · 
      that has
      a mortgage note rate equal to or greater than the highest mortgage note rate
      of
      any mortgage loan for which it is being substituted, 

    · that
      matures no later than, and no more than one year before, any mortgage loan
      for
      which it is being substituted, 

    · that
      has
      an original term to maturity equal to each mortgage loan for which it is being
      substituted, and

    · that
      has
      a scheduled principal balance that, together with any other eligible substitute
      mortgage loans being substituted on that substitution day, and any funds
CMSI
      deposits
      in the certificate account relating to the substitution (the
      substitution adjustment amount)
      equals
      or exceeds the

    

    
      
        
           

        

        
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    mortgage
      loans for which they are being substituted.

    The
      substitution adjustment amount will be separately accounted for as a reserve
      fund in the certificate account and will be remitted to certificate holders
      in
      the month following receipt when the repurchase proceeds are remitted to
      compensate for the resulting shortfall incurred in connection with the
      substitution of mortgage loans.

    (h)
      If,
      on the substitution day, any installment of principal and interest has been
      received in the certificate account where the principal portion has not been
      applied to reduce the scheduled principal balance of the mortgage loan that
      is
      being substituted for, because the installment was received before the first
      day
      of the applicable month, the full amount of such prepaid installment will be
      paid on the substitution day to CMSI
      from the
      certificate account.

    (i)
      Upon
      a substitution of mortgage loans pursuant to this section 2.3,

    · exhibit
      B
      to this agreement will be deemed to be amended to exclude all mortgage loans
      being replaced by such eligible substitute mortgage loans and to include,
      pursuant to section 10.1, the information in the supplemental mortgage loan
      schedule regarding the eligible substitute mortgage loans, and all references
      in
      this agreement to mortgage loans will include such eligible substitute mortgage
      loans, 

    · CMSI
      will be
      deemed to represent and warrant, as of the substitution day, that the
      representations and warranties in section 2.2 are true of the eligible
      substitute mortgage loans, and

    · the
      Trustee will release to CMSI
      the
      nonconforming mortgage loans and execute and deliver any instruments of transfer
      or assignment required to transfer, without recourse, the nonconforming mortgage
      loans to CMSI.

    (j)
      CMSI’s
      obligation under this section 2.3 to repurchase or substitute mortgage loans
      will be the sole remedy against CMSI
      available to the certificate holders or the Trustee on behalf of the certificate
      holders for a material defect in a mortgage document or a breach of a
      representation and warranty in section 2.2.

     

    3 Servicing 

     

    3.1 CitiMortgage
      as servicer and master servicer

    (a)
      Affiliated
      mortgage loans.
      CitiMortgage will service those mortgage loans listed in exhibit B, other than
      any mortgage loans listed on schedule B-TP (the affiliated
      mortgage loans).
      

    (b)
      Third-party
      mortgage loans.
      The
      mortgage loans listed in schedule B-TP to exhibit B (third-party
      mortgage loans)
      will be
      serviced by a third-party
      servicer
      pursuant
      to this agreement, a third-party
      servicing agreement
      between
      CitiMortgage and the third-party servicer, and the Guide. CitiMortgage will
      be
      the master
      servicer
      for each
      third-party mortgage loan. Each third-party servicing agreement will be
      consistent with this agreement and, except for special servicing agreements,
      will be effective as of the closing date.

    (c)
      Special
      servicing.
      CitiMortgage may enter into a special
      servicing agreement
      with an
      unaffiliated person (the class
      B holder).
      At any
      time that the class B holder holds 100% of the beneficial interest in the most
      subordinated class of certificates, the class B holder may designate a
special
      servicer
      to
      service certain mortgage loans in default and REO
      property
      (specially
      serviced mortgage loans).
      Any
      special servicing agreement will be subject to each rating agency’s
      acknowledgement that the ratings

    

    
      
        
           

        

        
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    of
      the
      certificates in effect immediately prior to CitiMortgage’s entering into the
      special servicing agreement will not be qualified, downgraded or withdrawn,
      and
      that the certificates will not be placed on credit review status (except for
      possible upgrading) as a result of the agreement.

    CitiMortgage
      will be the master servicer and the special servicer will be a third-party
      servicer for the specially serviced mortgage loans. Except as otherwise stated
      or as the context clearly requires, references in this agreement to third-party
      mortgage loans will include specially serviced mortgage loans, and references
      to
      third-party servicing agreements will include special servicing agreements.
      

    (d)
      Third-party
      servicing.
      With
      CitiMortgage’s approval, a third-party servicer may delegate its servicing
      obligations, but the third-party servicer will remain obligated under its
      third-party servicing agreement. CitiMortgage and any third-party servicer
      may
      amend the third-party servicing agreement, consistent with this
      agreement.

    CitiMortgage
      will enforce each third-party servicer’s obligations under its third-party
      servicing agreement, including any obligation to make advances for delinquent
      payments or to purchase a mortgage loan on account of defective documentation
      or
      a breach of a representation or warranty. Such enforcement, including the legal
      prosecution of claims, termination of third-party servicing agreements, and
      the
      pursuit of other appropriate remedies, will as to form, extent and timing be
      conducted as CitiMortgage, in its good faith business judgment, would require
      if
      it were the owner of the mortgage loans. CitiMortgage will pay the costs of
      enforcement at its own expense, but will be reimbursed only from

    · a
      general
      recovery resulting from the enforcement only to the extent that the recovery
      exceeds all amounts due on the mortgage loans, or 

    · a
      specific recovery of costs, expenses or attorneys fees against the party against
      whom the enforcement is directed. 

    (e) Servicing generally.
      In
      connection with its servicing and master servicing, CitiMortgage 

    · may,
      acting alone or through third-party servicers, take any action it deems
      necessary or desirable. 

    · may
      execute and deliver on behalf of itself, the certificate holders or the Trustee
      any instruments of satisfaction or cancellation, or of partial or full release
      or discharge and all other comparable instruments, for the mortgage loans and
      the related mortgaged properties.

    · will
      service and master service the mortgage loans in the best interests of, and
      for
      the benefit of, the certificate holders and any Insurer.

    · will
      service the affiliated mortgage loans in accordance with its normal servicing
      procedures for mortgage loans held in its own portfolio. 

    · will
      master service the third-party mortgage loans, in accordance with prudent
      mortgage loan servicing standards and procedures accepted in the mortgage
      banking industry and in accordance with the Guide.

    · will
      promptly notify the Trustee of any circumstance that might adversely affect
      CitiMortgage’s ability to service or master service any mortgage loan or to
      otherwise perform its obligations under this agreement. 

    · will
      maintain accurate books and records, and an adequate system of audit and
      internal controls, that will permit the Trustee, or its duly authorized
      representatives and designees, to examine and audit and make legible
      reproductions of records during reasonable business

    

    
      
        
           

        

        
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    hours.
      All such records will be maintained for the period required by the Guide or
      any
      longer period required by law.

    The
      Trustee will furnish CitiMortgage with any powers of attorney and other
      documents reasonably necessary or appropriate, and will take any other actions
      that CitiMortgage reasonably requests, to enable CitiMortgage to carry out
      its
      servicing duties.

     

    3.2 Collections 

    CitiMortgage
      and each third-party servicer will, to the extent consistent with this
      agreement, 

    
      	
              ·

            	
              follow
                such normal collection procedures as it deems necessary and advisable,
                and
                

            

    

    
      	
              ·

            	
              make
                reasonable efforts to collect all amounts payable on the mortgage
                loans it
                services. 

            

    

    Consistent
      with the foregoing, CitiMortgage may 

    · waive
      any
      late payment charge, prepayment charge or penalty interest in connection with
      the prepayment of a mortgage loan or any assumption fees or other fees collected
      in the ordinary course of servicing the mortgage loan, and

    · arrange
      with a mortgagor a schedule for the payment of principal and interest due and
      unpaid after the applicable first day of the month if CitiMortgage reasonably
      believes that without the arrangement the mortgagor would default on the
      mortgage loan. Regardless of whether such an arrangement is made, the mortgage
      loan will be considered delinquent for all purposes of this
      agreement.

    CitiMortgage
      need not institute litigation to collect any payment if it reasonably believes
      that the cost of litigation is likely to outweigh its economic benefit.

     

    3.3 Certificate
      and other accounts 

    (a)
      Certificate
      account.
      On or
      before the closing date, CitiMortgage will open with Depositories or the Paying
      Agent one or more certificate accounts (collectively, the certificate
      account).
      The
      certificate account will include any alternative certificate account. The
      certificate account will be a non-interest bearing account unless the Series
      Terms state that the certificate account is an investment account.

    CitiMortgage
      will not commingle funds and other property in the certificate account with
      any
      other funds or property of CitiMortgage or the Trustee. However, in order to
      efficiently transfer funds in the certificate account to a distribution account,
      CitiMortgage may, on the business day preceding the date funds are to be
      transferred from the certificate account to the distribution account, transfer
      those funds to a commingled clearance account, provided,
      that if
      Fitch has rated the certificates, CitiMortgage may not so commingle funds unless
      CitiMortgage’s short-term rating, or the short-term rating of any person to whom
      CitiMortgage has delegated servicing under this agreement, by Fitch is at least
      “F1.” The clearance account will be under CitiMortgage’s sole control, and
      CitiMortgage will maintain adequate records indicating the ownership of the
      funds in the clearance account.

    CitiMortgage,
      on behalf of the Trustee, will deposit in the certificate account, within one
      business day following receipt and posting, the following amounts received
      by it
      on the affiliated mortgage loans (remittances
      on the
      affiliated mortgage loans):

    · all
      principal payments and prepayments (other than payments due, and principal
      prepayments received, on or before the cut-off date);

    

    
      
        
           

        

        
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    all
      interest payments (other than payments due on or before the cut-off date),
      net
      of any servicing fee retained by CitiMortgage pursuant to section
      3.8(b);

    · any
      buydown funds required to be deposited pursuant to section 3.16;

    · all
      net
      liquidation proceeds, other than proceeds to be applied to the restoration
      or
      repair of the related mortgaged property or released to the related mortgagor
      in
      accordance with normal servicing procedures;

    · proceeds
      from the repurchase of a mortgage loan, and the substitution adjustment amount
      in connection with an eligible substitute mortgage loan;

    · all
      hazard insurance proceeds;

    · any
      advance account advance; 

    · any
      loss
      recoveries; and

    · the
      amount CitiMortgage is required to pay into the certificate account pursuant
      to
      section 3.4, “Prepayment interest shortfalls.”

    If
      CitiMortgage must repay any amount deposited in the certificate account, by
      reason of the reversal of a provisional credit owing to the dishonor of a
      mortgagor’s check or otherwise, CitiMortgage will promptly 

    · withhold
      a corresponding amount from a subsequent deposit into the certificate account,
      and 

    · restate
      its accounts appropriately.

    CitiMortgage
      need not deposit in the certificate account 

    
      	
              ·

            	
              amounts
                required to be deposited into the servicing account,
                

            

    

    
      	
              ·

            	
              collected
                servicing fees, except as required by section 3.4, “Prepayment interest
                shortfalls,”

            

    

    
      	
              ·

            	
              prepayment
                charges, late payment charges, assumption fees and other similar
                charges,
                which CitiMortgage may retain as additional servicing compensation,
                and
                

            

    

    
      	
              ·

            	
              reimbursements
                of property protection expenses,

            

    

    received
      on affiliated mortgage loans.

    (b)
      Servicing
      accounts.
      CitiMortgage will establish and maintain servicing
      accounts
      with
      Depositories, and will deposit therein all collections of taxes, assessments,
      primary mortgage or hazard insurance premiums or comparable items for the
      account of the mortgagors. CitiMortgage may withdraw funds from the servicing
      account, but only 

    · to
      effect
      payment of taxes, assessments, primary mortgage or hazard insurance premiums
      or
      comparable items, 

    · to
      reimburse the relevant servicer for costs incurred in effecting the timely
      payment of taxes and assessments on a mortgaged property, for servicing account
      advances, and for payments made pursuant to section 3.1 regarding timely payment
      of taxes and assessments, section 3.10 regarding premiums on primary mortgage
      insurance policies, and section 3.11 regarding premiums on standard hazard
      insurance policies, or

    · to
      refund
      to a mortgagor any amounts determined to be overages, or to pay interest owed
      to
      mortgagors on such account to the extent required by law, or to clear and
      terminate such accounts at the termination of this agreement in accordance
      with
      section 9.1.

    The
      servicing account may commingle collections from other series that have the
      same
      Trustee. The servicing account will be a non-interest bearing account unless
      the
      Series Terms state that the servicing account is an investment
      account.

    Any
      costs
      incurred by the relevant servicer in effecting the timely payment of taxes
      and
      assessments on a mortgaged property will not, for the purpose of calculating
      monthly distributions to certificate holders, be added to the amount owing
      under
      the related mortgage loan,

    

    
      
        
           

        

        
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    even
      if
      the terms of the mortgage loan so permit.

    (c)
      Third-party
      accounts.
      CitiMortgage will establish and maintain with Depositories segregated
custodial
      accounts for P&I
      and
      segregated escrow
      accounts
      in
      accordance with the requirements of the Guide. Each third-party servicer will
      deposit in such accounts, within two business days of receipt and posting,
      the
      amounts related to the third-party mortgage loans required by the third-party
      servicing agreements to be so deposited. Amounts in a custodial account for
      P&I will be fully insured by the FDIC
      or the
      National Credit Union Share Insurance Fund. To the extent amounts in a custodial
      account for P&I are not fully insured, the excess will either, at
      CitiMortgage’s option, 

    · be
      promptly remitted to the certificate account or a custodial investment account,
      or 

    · be
      secured by one or more Eligible Investments maturing not later than the
      determination date, provided that the Trustee has received an opinion of counsel
      acceptable to the Trustee to the effect that CitiMortgage has either a claim
      to
      the funds held by the institution or a perfected first security interest against
      such Eligible Investments superior to the claims of any other depositor or
      general creditor of such institution.

    Proceeds
      received on individual third-party mortgage loans from a title, hazard or other
      insurance policy covering the mortgage loan, other than a primary mortgage
      insurance policy, will be deposited first in the applicable escrow account
      if
      required for the restoration or repair of the related mortgaged property.
      Proceeds from such insurance policies not so deposited in the applicable escrow
      account and proceeds from primary mortgage insurance policies will be deposited
      in the custodial account for P&I and will be applied to the balances of the
      related third-party mortgage loans as payments of interest and principal.

    Third-party
      servicers may withdraw funds from custodial accounts for P&I as permitted by
      this agreement and in accordance with the Guide. The Trustee will have no
      responsibility for monitoring such withdrawals. 

    CitiMortgage
      will maintain separate accounting on a mortgage loan-by-mortgage loan basis
      for
      any remittances to or payments from the custodial accounts for
      P&I.

    (d)
      Transfers
      from third-party accounts to certificate account.
      On each
      determination date, each third-party servicer will withdraw from its custodial
      accounts for P&I and deposit into the certificate account the following
      amounts (remittances
      on
      third-party loans):

    · scheduled
      installments of principal and interest on the third-party mortgage loans
      received by the third-party servicers that were due on the first day of that
      month, net of third-party servicing fees due third-party servicers;

    · principal
      prepayments and insurance proceeds, net of third-party servicing fees due
      third-party servicers, received in the preceding month; 

    · liquidation
      proceeds on a third-party mortgage loan.

    (e) Accounts
      generally.
      The
      certificate account, the servicing account, each custodial account for P&I,
      the escrow account and the distribution account will each bear a designation
      clearly indicating that the funds in the account are held for the benefit of
      the
      Trustee or the certificate holders. CitiMortgage, each third-party servicer, and
      the Paying Agent will hold all money and property received by it as part of
      the
      Trust Fund and will apply it as

    

    
      
        
           

        

        
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    provided
      in this agreement, except
      that
      amounts from buydown funds required to be deposited pursuant to section 3.16
      will be held by CitiMortgage in the buydown account on behalf of the mortgagors,
      subject to withdrawal by CitiMortgage for the purposes set forth in sections
      3.6(b) and (c). 

     

    3.4 Prepayment
      interest shortfalls

    (a)
      Affiliated
      mortgage loans.
      CitiMortgage
      will deposit in the certificate account on the business day preceding each
      distribution day the aggregate prepayment interest shortfall on the affiliated
      mortgage loans for the preceding month provided
      that
      such
      deposit need not exceed the lesser of 

    · the
      aggregate amount of the collected servicing fees on the affiliated mortgage
      loans for the month preceding such distribution day and 

    · one-half
      the scheduled servicing fee on the affiliated mortgage loans for that month.
      

    Such
      deposit will not be considered to be a voluntary advance by
      CitiMortgage,
      and will
      not be reimbursable to CitiMortgage from the certificate account or
      otherwise.

    (b)
      Third-party
      mortgage loans.
      Each
      third-party servicer will transfer to the certificate account on each
      determination date the aggregate amount required under the Guide to be paid
      by
      third-party servicers in respect of prepayment interest shortfalls on
      third-party mortgage loans for the preceding month.

    (c)
      Each
      third-party servicer will deposit in the certificate account on the business
      day
      preceding each distribution day the aggregate prepayment interest shortfall
      on
      its third-party mortgage loans for the preceding month, provided
      that the
      aggregate of such deposits for all third-party loans for any distribution day
      will be reduced by any amounts paid by the third-party servicer under the
      preceding paragraph (b) on the preceding determination date.

     

    3.5 Advances

    (a) Servicing
      account advances.
      CitiMortgage
      will deposit in the servicing account the payment of property taxes and
      insurance premiums and other similar payments relating to the third-party
      mortgage loans that are not timely paid by the mortgagors or advanced by the
      third-party servicers on the date when such tax, premium or other cost for
      which
      such payment is intended is due.

    (b)
      Remittance
      delinquencies. For
      each
      distribution day, a
      remittance delinquency:
      

    · on
      an
      affiliated loan is the originally scheduled interest at the pass-through rate,
      and principal installment (as adjusted for any principal prepayments), on the
      mortgage loan due from the mortgagor on (but not before) the first day of the
      month but not received in the certificate account by close of business on the
      third business day before the distribution day.

    · on
      a
      third-party loan is the originally scheduled interest at the pass-through rate,
      and principal installment (as adjusted for any principal prepayments), on the
      mortgage loan due from the mortgagor on (but not before) the first day of the
      month but not received in the certificate account by close of business on the
      determination date for the distribution day.

    · on
      a
      buydown mortgage loan is the accrued and unpaid interest at the related
      pass-through rate, and the principal installment (as adjusted for any principal
      prepayments) on the mortgage loan due from the related buydown account on (but
      not before) the first day of the month but not received in the certificate
      account by close of business on (a) the third business day before the
      distribution day (for a buydown mortgage loan that is an affiliated

    

    
      
        
           

        

        
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    loan)
      or
      (b) the determination date (for a buydown mortgage loan that is a
      third-party mortgage loan).

    A
      remittance delinquency does not include an apparent remittance delinquency
      that
      is determined by CitiMortgage to be the result of the occurrence of an
      extraordinary event (but not including a remittance delinquency determined
      to be
      eligible for an advance pursuant to this section 3.5).

    (c)
      Advances
      by third-party servicers.
      To the
      extent required by its third-party servicing agreement, each third-party
      servicer will transfer to the certificate account, on the determination date,
      any amount required to be advanced under its third-party servicing agreement
      (a
third-party
      servicer advance).

    (d)
      Uncommitted
      cash advances.
      On the
      business day before each distribution day, CitiMortgage will transfer from
      the
      certificate account to the distribution account

    · uncommitted
      cash related to affiliated mortgage loans in an amount not greater than the
      remittance delinquencies on the affiliated mortgage loans for that distribution
      day, and

    · uncommitted
      cash relating to third-party mortgage loans in an amount not greater than the
      remittance delinquencies on the third-party mortgage loans for that distribution
      day.

    (e)
      Voluntary
      advances by CitiMortgage.
      On the
      business day before each distribution day, CitiMortgage will deposit in the
      certificate account a voluntary
      advance
      equal to

    · the
      sum
      of (i) remittance delinquencies on the mortgage loans for that distribution
      day, (ii) scheduled interest not required to be paid by the mortgagors on
      the first day of the month because of the limitations on mortgage interest
      payments under the federal Servicemembers Civil Relief Act or any comparable
      state laws, in each case after adjustment of delinquent or non-required interest
      payments to interest at the pass-through rate, and (iii) the amount of any
      uncommitted cash transferred to the distribution account for the preceding
      distribution day, minus
      

    · the
      sum
      of (i) uncommitted cash transferred to the distribution account on the same
      day pursuant to paragraph (d) above, and (ii) any third-party servicer
      advances for that distribution day.

    (f)
      Paying
      agent advances.
      Before
      noon on each distribution day, the Paying Agent will deposit into the
      distribution account an affiliated
      Paying Agent advance
      equal to

    · the
      sum
      of (i) all remittance delinquencies on the affiliated mortgage loans for
      that distribution day, and (ii) the amount of all uncommitted cash advances
      related to the affiliated mortgage loans transferred to the distribution account
      for the preceding distribution day, minus 

    · the
      sum
      of (i) any uncommitted cash advance related to the affiliated mortgage
      loans for that distribution day and (ii) any voluntary advance by
      CitiMortgage related
      to the affiliated loans for that distribution day, other than an advance of
      interest not required to be paid because of the limitations on mortgage interest
      payments under the federal Servicemembers Civil Relief Act or any comparable
      state laws (Relieved
      interest).

    Before
      noon on each distribution day, the Paying Agent will deposit into the
      distribution account a third-party
      Paying Agent advance
      equal to

    · the
      sum
      of (i) all remittance delinquencies on the third-party mortgage loans for
      that distribution day, and (ii) the amount of uncommitted cash advances
      related to the third-party mortgage loans transferred to the distribution
      account for the preceding distribution day, minus

     

    

    
      
        
           

        

        
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    the
      sum
      of (i) any uncommitted cash advances related to third-party mortgage loans
      for that distribution day, and (ii) any third-party servicer advance, other
      than an advance of Relieved interest, for that distribution day.

    CitiMortgage
      will on the business day it receives notice from the Paying Agent of the amount
      of any affiliated or third-party Paying Agent advance,

    · pay
      the
      Paying Agent a servicing administration fee of $100 for each distribution day
      on
      which the Paying Agent makes such an advance, and

    · reimburse
      the Paying Agent for the amount of the advance, 

    provided
      that if
      the notice is received after 1PM
      on a
      business day, the administration fee and reimbursement will be made to the
      Paying Agent by 1PM
      on the
      following business day. 

    Promptly
      after the Trust Fund is terminated pursuant to section 9, CitiMortgage will
      notify the Paying Agent of the amount of affiliated and third-party Paying
      Agent
      advances for which CitiMortgage reimbursed the Paying Agent and that were not
      recovered from later remittances, net recoveries or other proceeds or
      collections on the affiliated or third-party mortgage loans, respectively.
      The
      Paying Agent will reimburse CitiMortgage for the amount of reimbursements not
      so
      recovered on the next business day after its receipt of the notice.

    (g)
      Limited
      obligation to make advances.
      Notwithstanding anything to the contrary in this agreement, the relevant
      servicer will not be obligated to make any advance described in sections (a)
      through (e) above, nor will the Paying Agent be obligated to make any advance
      described in section (f) above, except to the extent that the servicer or the
      Paying Agent determines that the advance will be recoverable from future
      payments and proceeds on the related mortgage loan.

    CitiMortgage
      will provide the Paying Agent with any information CitiMortgage has and the
      Paying Agent requests to help the Paying Agent determine if a Paying Agent
      advance will be recoverable.

    (h)
      Future
      moratorium legislation.
      If
      after the date of this agreement, any state or locality enacts legislation
      granting mortgagors a full or partial moratorium on mortgage payments while
      the
      mortgagor is on active military service, CitiMortgage, will, by notice to the
      Paying Agent, elect whether CitiMortgage will advance part or all of any
      postponed payments under such legislation. CitiMortgage will make a separate
      election for each state or locality that adopts such legislation. To the extent
      CitiMortgage elects not to advance part or all of such postponed payments,
      the
      Paying Agent will not have any obligation to advance such payments.

     

    3.6 Distributions

    (a)
      Transfers
      to distribution account.
      Not
      later than 12 noon on each distribution day, CitiMortgage will withdraw from
      the
      certificate account and deposit in a distribution
      account
      established by the Paying Agent (or to the extent provided in the Series Terms,
      any pooling, lower-tier or upper-tier REMIC
      account), all distributions to be made on the distribution day on the
      certificates (or class P or class L regular interests). The distribution account
      will be an Eligible Account, and will not be commingled with any other
      account.

    (b)
      Distributions
      to certificate holders.
      On each
      distribution day, the Paying Agent will distribute from the distribution account
      (or, to the extent provided in the Series Terms, any pooling, lower-tier, or
      upper-tier REMIC
      account)
      to each certificate holder of

    

    
      
        
           

        

        
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    record
      on
      the preceding record date (other than as provided in section (c) below for
      final
      distributions) the certificate holder’s share (based on the denomination of
      certificates of the applicable class held by the holder) of the amounts
      distributable to such class in accordance with the priorities set forth in
      the
      Series Terms, as set forth in the applicable distribution day statement.

    All
      reductions in principal balance of a certificate (or one or more Predecessor
      Certificates) effected by distributions made on any distribution day or
      reductions thereof without distributions in accordance with this agreement
      (including final distributions under section (c) below or section 9.1) will
      be
      binding upon all holders of such certificate and of any certificate issued
      upon
      the registration of transfer thereof or in exchange therefor or in lieu thereof,
      whether or not the distributions are noted on the certificate. 

    (c)
      Final
      distributions.
      If
      CitiMortgage expects that the principal balance of any class will be reduced
      to
      zero on the next distribution day, it will, not later than the third day before
      that distribution day, mail to the Paying Agent and each person in whose name
      a
      certificate to be so retired is registered at the close of business on the
      applicable record date a notice that:

    · CitiMortgage
      expects that funds sufficient to reduce the principal balance of the certificate
      to zero will be available in the certificate account on that distribution day,
      and

    · if
      such
      funds are available, (A) a final distribution will be made on that distribution
      day, but only upon presentation and surrender of the certificate at the office
      or agency of the Paying Agent maintained for that purpose pursuant to the Series
      Terms (the address of which will be set forth in the notice), and (B) no
      interest will accrue on the certificate after the end of the month preceding
      the
      distribution day.

    The
      final
      distribution on each certificate (including the final distribution on any
      certificate receiving a distribution in connection with a termination pursuant
      to section 9.1) will be payable only upon presentation and surrender of the
      certificate on or after the distribution day for such final distribution at
      the
      office or agency of the Paying Agent maintained for that purpose pursuant to
      the
      Series Terms.

    (d)
      Method
      of payment.
      Each
      distribution will be made 

    
      	
              ·

            	
              by
                check mailed to the certificate holder at its address appearing in
                the
                Certificate Register, or 

            

    

    
      	
              ·

            	
              by
                wire transfer if the certificate holder is eligible for wire transfer
                under the Series Terms and the Paying Agent has received wiring
                instructions from the certificate holder, or

            

    

    
      	
              ·

            	
              by
                such other means of payment as the certificate holder, CitiMortgage,
                and
                the Paying Agent may agree. 

            

    

    Wiring
      instructions received by the Paying Agent will remain in effect until changed
      by
      the certificate holder by written notice to the Paying Agent at least five
      business days before a distribution day.

    (e)
      Unclaimed
      distributions.
      Any
      amounts in the distribution account that are distributable as interest or
      principal pursuant to this section 3.6, but are not distributed because of
      the
      non-presentation of the related certificates, or because the check for such
      payment is returned undelivered, will be held by the Paying Agent for two years
      in a separate trust account for the benefit of the holders of such certificates.
      Amounts in the separate account will be deemed to have been distributed to
      the
      holders for the purpose of any calculations required by this agreement and
      will
      no longer be available for

    

    
      
        
           

        

        
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    application
      to any other amounts due under this agreement.

    After
      two
      years, any amount that remains in the separate account will be paid to the
      holders of the residual certificates, as appropriate (except that any amounts
      representing reimbursement for an insured payment will be paid to the Insurer).
      After such payment, the certificate holders will be required to seek payments
      as
      unsecured general creditors from the holders of the residual certificates,
      as
      appropriate.

    (f) Determination
      of distributions.
      CitiMortgage will determine on each determination date, based on payments
      received on the mortgage loans:

    · the
      pool
      distribution amount;

    · the
      interest allocation and interest allocation carryforward for each
      class;

    · the
      principal allocation for each class;

    · the
      principal distribution for each class;

    · any
      ratio-stripped PO class reimbursement;

    · any
      insurance premium; and

    · any
      other
      information required to determine the distributions to be made to certificate
      holders in accordance with the Series Terms.

    (g)
      Distribution
      day data.
      CitiMortgage will prepare, and will deliver to the Paying Agent no later than
      12
      noon on the third business day before each distribution day, distribution
      day data
      for that
      distribution day as to:

    (i) the
      pool
      distribution amount (including any portion that represents loss
      recoveries);

    (ii) the
      aggregate amount of interest accrued during the related month on all outstanding
      certificates and any non-supported prepayment interest shortfalls;

    (iii) the
      aggregate amount of interest to be distributed to each class, identifying the
      portion attributable to the class’s interest allocation
      carryforwards;

    (iv) the
      aggregate distribution in reduction of principal balance to be made for each
      class;

    (v) the
      amount in reduction of principal balance of the certificates that is not the
      result of distributions in reduction of principal balance;

    (vi) whether
      the amount expected to be available in the certificate account will be
      sufficient to pay all amounts specified in clauses (iii) and (iv) above and,
      if
      not, the percentages of each such amount that may be paid in accordance with
      the
      priorities set forth in the Series Terms from the amounts expected to be
      available in the certificate account;

    (vii) the
      amounts included in the statement pursuant to clauses (iii) and (iv) above,
      expressed in each case per $1,000 initial principal balance (or initial notional
      balance), to be distributed;

    (viii) the
      aggregate amounts of affiliated servicing fee and any third-party servicing
      fee
      to be paid pursuant to section 3.6(h);

    (ix) any
      special hazard loss limit, fraud loss limit and bankruptcy loss limit after
      giving effect to the distributions to be made on the distribution
      day;

    (x) any
      amount to be withdrawn from the certificate account and paid over to the holders
      of the class PR or class LR certificates pursuant to section 3.6(h);
      and

    (xi) the
      principal balance of the certificates that will remain outstanding after giving
      effect to the distributions to be made on the distribution day, expressed both
      on an aggregate basis and per $1,000 initial principal balance.

    On
      the
      second business day before each distribution day, CitiMortgage will deliver
      to
      the Paying Agent a distribution
      day statement
      (which
      may be in electronic form), setting forth the distribution day data in statement
      format.

    

    
      
        
           

        

        
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    (h)
      Payment
      of servicing fees; distributions to residual holders.
      On each
      distribution day, if 

    
      	
              ·

            	
              CitiMortgage
                has transferred funds from the certificate account to the distribution
                account in accordance with section 3.6(a), and

            

    

    
      	
              ·

            	
              the
                Depository for the certificate account has set aside any uncommitted
                cash
                in the certificate account that is not required for an uncommitted
                cash
                advance, the amount of which uncommitted cash CitiMortgage
                will certify to such Depository, 

            

    

    then
      CitiMortgage will withdraw any cash balance remaining in the certificate
      account, and apply it in the following order: 

    First,
      to the
      payment to CitiMortgage of any portion of the servicing fee
      not
      already retained pursuant to section 3.8(b); and

    Second,
      as a
      distribution to the holders of any class PR, and if there are no class PR
      certificates, to the holders of the class LR certificates. 

    (i)
      Transfer
      of certificates.
      Subject
      to the foregoing provisions of this section 3.6, each certificate delivered
      under this agreement upon registration of transfer of or in exchange for or
      in
      lieu of any other certificate will carry the rights to unpaid distributions
      that
      were carried by the other certificate. 

     

    3.7 Third-party
      servicing

    (a)
      Third-party
      servicing fee.
      As
      compensation for its activities under its third-party servicing agreements,
      each
      third-party servicer will be entitled to a third-party servicing fee for each
      third-party mortgage loan as to which a monthly installment of principal and
      interest is received equal to the monthly third-party servicing fee rate for
      the
      mortgage loan multiplied by the scheduled principal balance on which the
      installment of interest accrued. (The third-party servicer’s compensation may be
      reduced by any master servicing fee on such third-party mortgage loan, as
      described in the following paragraph (b).) 

    (b)
      Master
      servicing fee.
      CitiMortgage will be entitled to any master servicing fee that CitiMortgage
      and
      the third-party servicer may agree upon in the third-party servicing agreement,
      provided
      that
      the
      master servicing fee rate

    · for
      a
      specially serviced mortgage loan may not exceed 0.25% per annum,
      and

    · for
      a
      third-party mortgage loan other than a specially serviced mortgage loan may
      not
      exceed the per annum rate specified as the third-party servicing fee rate on
      schedule B-TP to exhibit B under the heading “Sub Fee.”

    CitiMortgage
      may also be entitled to additional master servicing compensation not based
      on
      the master servicing fee rate, as agreed with the third-party servicer, such
      as
      any net REO
      proceeds
      in excess of the outstanding principal balance and accrued interest on a
      mortgage loan.

    (c)
      CitiMortgage
      liability.
      Notwithstanding any third-party servicing agreement, provisions of this
      agreement relating to agreements or arrangements between CitiMortgage and a
      third-party servicer, or reference to actions taken through a third-party
      servicer or otherwise, CitiMortgage will remain obligated and liable to the
      Trustee and the certificate holders for the servicing of the third-party
      mortgage loans in accordance with this agreement to the same extent as though
      CitiMortgage alone were servicing the third-party mortgage loans itself.

    All
      documents, instruments or contracts executed by third-party servicers on behalf
      of CitiMortgage will be treated by the Trustee as though executed by
      CitiMortgage itself.

    Any
      amounts received by a third-party servicer for a third-party mortgage loan
      will

    

    
      
        
           

        

        
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    be
      deemed
      to have been received by CitiMortgage for purposes of this agreement. If a
      third-party servicer fails to remit any amounts it receives that are required
      to
      be transferred to the certificate account or an escrow account, CitiMortgage
      will transmit the required amounts to the account.

    Nothing
      in this agreement will limit any indemnification agreement between CitiMortgage
      and a third-party servicer, but the indemnification agreement will not diminish
      CitiMortgage’s obligations or liability under this agreement.

     

    3.8 Permitted
      withdrawals from certificate account

    (a)
      CitiMortgage may pay the following amounts from the certificate account, in
      order of priority listed:

    (i)
      to
      itself, collected servicing and master servicing fees (to the extent not
      withheld from payments of interest received on the mortgage loans), and, for
      a
      liquidated loan, the excess of scheduled servicing fees over the collected
      servicing fees;

    (ii)
      reimbursements to itself for (A) liquidation expenses incurred on a
      mortgage loan, up to the liquidation proceeds on the mortgage loan deposited
      in
      the certificate account, net of applicable servicing fees, (B) any amounts
      due
      CitiMortgage under section 3.12 relating to deficiency actions, and (C) any
      excess of the liquidation proceeds after such reimbursement over the principal
      balance of the mortgage loan, together with accrued and unpaid interest at
      the
      mortgage note rate to the date of purchase at the foreclosure sale, liquidation
      proceeding or otherwise. For these purposes, liquidation expenses will include
      subsequent trailing bills relating to previously disposed REO
      property
      in which distribution of net liquidation proceeds has occurred. 

    (iii)
      reimbursement to itself for (x) voluntary advances or
      (y) reimbursements by CitiMortgage to the Paying Agent for Paying Agent
      advances. Reimbursements pursuant to this clause (iii) will be limited to
      amounts received on particular mortgage loans (including, for this purpose,
      liquidation and insurance proceeds) that represent late payments of principal
      or
      interest, or subsequent payments of interest that was excused mortgagors on
      military service under applicable moratorium legislation;

    (iv)
      reimbursement to an advancing person (including CitiMortgage, to the extent
      CitiMortgage has reimbursed the Paying Agent for a Paying Agent advance) for
      voluntary or Paying Agent advances that the advancing person determines are
      nonrecoverable advances;

    (v)
      reimbursement to itself for servicing account advances not previously reimbursed
      out of the servicing
      account, in each case to the extent that amounts representing reimbursements
      of
      such advances on mortgage loans may have been deposited in the certificate
      account;

    (vi)
      reimbursement to an advancing person of voluntary advances, Paying Agent
      advances, or advance account advances, made on a mortgage loan in an amount
      not
      to exceed at any time in the aggregate the amount of payments from time to
      time
      deposited in the certificate account and not required to be distributed to
      the
      certificate holders (including, for this purpose, liquidation and insurance
      proceeds covering the mortgaged property);

    (viii)
      payments to itself or the holders of the residual certificates of Investment
      Income;

    (ix)
      transfers to the distribution account; 

    (x)
      payments to clear and terminate the certificate account pursuant to section
      9.1;
      and

    

    
      
        
           

        

        
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    (xi)
      all
      remittances received following the repurchase of a mortgage loan that are
      required to be paid to CMSI
      pursuant
      to section 2.3. 

    CitiMortgage
      may also withdraw funds from the certificate account, and adjust the pool
      distribution amount for any pool or the amount of scheduled or unscheduled
      principal payments, to appropriately adjust for prior servicing errors,
      including errors in posting, allocation, or distribution, if CitiMortgage
      believes that such withdrawals or adjustments are necessary to effect the
      provisions of this agreement.

    If,
      at
      the request of the Trustee, CitiMortgage delivers an officer’s certificate to
      the Trustee in connection with any such withdrawal or adjustment, the Trustee
      may conclusively rely without investigation on the officer’s certificate as to
      the reasons, amount and conformity to this agreement of the withdrawal or
      adjustment.

    CitiMortgage
      will maintain separate accounting records, on a mortgage loan-by-mortgage loan
      basis, of withdrawals from the certificate account pursuant to clauses (ii),
      (iii), (iv), (vi), (vii), (viii) and (x) of this section; provided
      that
      such records need not be retained by CitiMortgage for a period longer than
      its
      five most recent fiscal years.

    (b)
      In
      lieu of withdrawing collected or scheduled servicing fees from the certificate
      account pursuant to paragraph (a) above, CitiMortgage may, prior to transferring
      collection on mortgage loans, or liquidation or insurance proceeds, to the
      certificate account, withhold and pay to itself out of each payment received
      by
      it on account of interest the appropriate collected servicing fee. Any amounts
      that CitiMortgage is required to deposit in the certificate account pursuant
      to
      section 3.4, “Prepayment interest shortfalls,” will be deemed to reduce the
      collected or scheduled servicing fee to which CitiMortgage is entitled pursuant
      to this section. 

     

    3.9 Expenses

    (a)
      CitiMortgage expenses.
      CitiMortgage
      will pay all expenses incurred by it in connection with its servicing and master
      servicing activities under this agreement, and will not be entitled to
      reimbursement therefor except as expressly provided in this agreement.
      CitiMortgage will also be liable for all expenses, liabilities and obligations
      of the Trust Fund (other than the obligation to make principal and interest
      distributions on the certificates) including those set forth in section 8.5,
      “Trustee’s fees and expenses.” To the extent such expenses, liabilities or
      obligations consist of federal income taxes, including, without limitation,
      prohibited transaction taxes, taxes on net income from foreclosure property
      and
      taxes on certain contributions to a REMIC
      after
      the startup day, nothing will prevent CitiMortgage from contesting any such
      tax,
      if permitted by law, pending the outcome of such proceedings. 

    (d)
      Third-party
      servicer expenses.
      Each
      third-party servicer will pay all expenses incurred by it in connection with
      its
      servicing activities under its third-party servicing agreement (including
      advance payment of premiums for primary mortgage insurance policies, if
      required) and will not be entitled to reimbursement therefor except as expressly
      provided in its third-party servicing agreement.

     

    3.10 Primary
      mortgage insurance 

    CitiMortgage
      will exercise its best reasonable efforts to maintain each primary mortgage
      insurance policy in full force. CitiMortgage will present claims to the insurer,
      and take any other reasonable action that may be necessary to permit recovery,
      under any primary mortgage

    

    
      
        
           

        

        
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    insurance
      policy for a defaulted mortgage loan. 

    CitiMortgage
      may substitute for any primary mortgage insurance policy another substantially
      equivalent policy issued by another insurer, provided
      that
      no
      such substitution will be made unless (i) CitiMortgage is advised by each rating
      agency that the substitution will not negatively affect the rating agency’s
      then-current rating of the certificates (for any insured class certificates,
      without regard to any certificate insurance policy) or (ii) the claims-paying
      ability of the substitute primary mortgage insurer is, at the time of
      substitution, rated at least “AA” or its equivalent by each rating agency rating
      the certificates.

     

    3.11 Hazard
      insurance

    CitiMortgage
      will maintain for each mortgage loan (other than a mortgage loan for a
      cooperative apartment) hazard insurance with extended coverage in an amount
      at
      least equal to the lesser of

    · the
      maximum insurable value of the improvements securing the mortgage loan if that
      amount is less than the unpaid principal balance on the mortgage loan,

    · the
      principal balance owing on the mortgage loan if that amount is between 80%
      and
      100%, inclusive, of the insurable value, or 

    · 80%
      of
      the insurable value if the principal balance of the mortgage loan is less than
      80% of the insurable value. 

    Except
      for cooperative apartments, CitiMortgage will also maintain on property acquired
      upon foreclosure, or by deed in lieu of foreclosure, hazard fire insurance
      with
      extended coverage in an amount at least equal to the lesser of 

    · the
      maximum insurable value from time to time of the improvements that are a part
      of
      the property, or 

    · the
      unpaid principal balance of the mortgage loan at the time of foreclosure or
      deed
      in lieu of foreclosure plus (A) accrued interest at the mortgage note rate
      and
      (B) CitiMortgage’s good-faith estimate of liquidation expenses for the property.

    If
      a
      mortgaged property is located in a federally designated flood area, the hazard
      insurance will include flood insurance. No earthquake or other additional
      insurance will be required for any property, except as required by applicable
      law. 

    CitiMortgage
      may maintain a blanket hazard insurance policy on all of the mortgage loans.
      However, if the blanket policy contains a deductible clause, CitiMortgage will
      deposit in the certificate account any amount not payable under the blanket
      policy because of the deductible clause that would have been paid under a hazard
      policy that meets the requirements of this section and does not have a
      deductible clause.

    Any
      cost
      incurred by CitiMortgage in maintaining hazard insurance will not, for the
      purpose of calculating monthly distributions to the certificate holders, be
      added to the amount owing under the related mortgage loan, even if the terms
      of
      the mortgage loan permit it. 

     

    3.12 Realization
      on defaulted mortgage loans

    CitiMortgage
      will use its best efforts, consistent with its customary servicing procedures,
      to foreclose upon or otherwise comparably convert the ownership of properties
      securing any mortgage loans that continue in default and as to which no
      satisfactory arrangements can be made for collection of delinquent payments
      pursuant to section 3.2. Consistent with the foregoing, CitiMortgage will use
      reasonable efforts to realize upon defaulted mortgage loans in a manner that
      will maximize the receipt of

    

    
      
        
           

        

        
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    principal
      and interest by the certificate holders, taking into account, among other
      things, the timing of foreclosure proceedings. 

    If
      a
      deficiency action is available against the mortgagor or any other person,
      CitiMortgage may proceed for the deficiency. CitiMortgage may retain 25% of
      the
      net proceeds received from a mortgagor pursuant to a deficiency action as
      compensation for proceeding with the deficiency action. 

    Any
      property (other than the mortgaged property) pledged by or on behalf of a
      mortgagor as security for a mortgage loan in default, including marketable
      securities, may be liquidated and the proceeds thereof applied to cover any
      shortfalls upon the liquidation of a mortgaged property provided
      that the
      Trust Fund will in no event acquire ownership of any such property unless the
      Trustee receives an opinion of counsel to the effect that such ownership will
      not cause any constituent REMIC
      to fail
      to qualify as a REMIC
      and will
      not subject any constituent REMIC
      to any
      tax.

    If
      title
      to a mortgaged property is acquired in foreclosure or by deed in lieu of
      foreclosure, the deed or certificate of sale will be issued to the Trustee,
      or
      to its nominee on behalf of the Trust Fund. Notwithstanding such acquisition
      of
      title and cancellation of the mortgage loan, the mortgage loan will (except
      for
      purposes of section 9.1) be considered an outstanding mortgage loan until the
      mortgaged property is sold and the mortgage loan becomes a liquidated loan.
      Consistent with the foregoing for purposes of all calculations hereunder so
      long
      as the mortgage loan is considered outstanding, it will be assumed that the
      related mortgage note and its amortization schedule in effect on and after
      the
      acquisition of title (after giving effect to any previous principal prepayments,
      and before any adjustment thereto by reason of any deficient valuations and
      debt
      service reductions or any similar proceeding or any moratorium or similar waiver
      or grace period) remain in effect (notwithstanding that the indebtedness
      evidenced by the mortgage note will have been discharged), subject to adjustment
      to reflect the application of REO
      proceeds
      received in any month. 

    Net
      REO
      proceeds
      received in any month will be deemed to have been received first in payment
      of
      the accrued interest that remained unpaid on the date that such mortgage loan
      became an REO
      loan,
      with any excess being deemed to have been received for delinquent principal
      installments that remained unpaid on such date. Thereafter, net REO
      proceeds
      received in any month will be applied to the payment of installments of
      principal and accrued interest on the mortgage loan deemed to be due and payable
      in accordance with the terms of the mortgage note and amortization schedule.
      If
      the net REO
      proceeds
      exceed the then delinquent principal and interest installments on the mortgage
      loan, the excess will be treated as a principal prepayment received on the
      mortgage loan, up to the outstanding principal balance of the mortgage loan.
      Any
      net REO
      proceeds
      in excess of the outstanding principal balance and accrued interest on the
      mortgage loan will be treated as additional servicing compensation for
      CitiMortgage. 

    If
      CitiMortgage forecloses or accepts a deed in lieu of foreclosure on a mortgaged
      property, CitiMortgage will dispose of the mortgaged property before the end
      of
      the third calendar year that begins after the year of acquisition by the
      applicable constituent REMIC,
      unless

    · (i) the
      Trustee receives an opinion of counsel to the effect that the holding by
      the

    

    
      
        
           

        

        
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    applicable
      constituent REMIC
      of the
      mortgaged property subsequent to such period (and specifying the period beyond
      such period for which the mortgaged property may be held) will not result in
      the
      imposition of taxes on “prohibited transactions” of any of the constituent
REMICs
      as
      defined in Internal Revenue Code Section 860F, or cause any of the constituent
      REMICs
      to fail
      to qualify as a REMIC
      at any
      time that any certificates are outstanding, in which case the applicable
      constituent REMIC
      may
      continue to hold such mortgaged property (subject to any conditions contained
      in
      such opinion of counsel), or 

    · CitiMortgage
      has, prior to the expiration of such period, applied to the Internal Revenue
      Service for an extension of the period in the manner contemplated by Internal
      Revenue Code Section 856(e)(3), in which case the period will be extended by
      the
      applicable period. 

    Notwithstanding
      any other provision of this agreement, unless otherwise required pursuant to
      applicable state law, no mortgaged property acquired by the applicable
      constituent REMIC
      will be

    · rented
      (or allowed to continue to be rented) or otherwise used for the production
      of
      income by or on behalf of the applicable constituent REMIC
      in such
      a manner or pursuant to any terms that would (1) cause such mortgaged property
      to fall to qualify as “foreclosure property” within the meaning of Internal
      Revenue Code Section 860G(a)(8), (2) subject any of the constituent REMICs
      to the
      imposition of any federal or state income taxes on “net income from foreclosure
      property” earned from such mortgaged property within the meaning of Internal
      Revenue Code Section 860G(c), or (3) cause the sale of such mortgaged property
      to result in the receipt by any of the constituent REMICs
      of any
      income from non-permitted assets as described in Internal Revenue Code Section
      860F(a)(2)(B), or 

    · sold
      in a
      manner or pursuant to terms that would subject any of the constituent
REMICs
      to the
      imposition of any federal or state income taxes on “net income from foreclosure
      property” within the meaning of Internal Revenue Code Section 860G(c), unless
      CitiMortgage agrees to indemnify and hold harmless each constituent REMIC
      against
      the imposition of such taxes.

    The
      foregoing is subject to the provision that, if any mortgaged property is
      damaged, whether from an uninsured cause or otherwise, CitiMortgage will not
      be
      required to expend its own funds in connection with any foreclosure or towards
      the restoration of such property unless it determines that 

    · the
      restoration or foreclosure will increase the net proceeds of liquidation of
      the
      mortgage loan to the certificate holders, after reimbursement to itself for
      such
      expenses, and 

    · CitiMortgage
      will recover such expenses through liquidation or insurance
      proceeds.

    CitiMortgage
      will be responsible for all other costs and expenses incurred by it in any
      such
      proceedings; provided,
      however,
      that
      it
      will be entitled to reimbursement thereof from the related property, as
      contemplated in section 3.8. Notwithstanding the above, CitiMortgage will not
      be
      entitled to recover legal expenses incurred in connection with liquidation
      proceedings where the mortgagor pays all delinquent payments and expenses and
      the proceedings are terminated prior to liquidation, other than sums received
      from the mortgagor for such expenses.

    Notwithstanding
      anything to the contrary in this section 3.12, CitiMortgage will not be
      obligated to foreclose upon or otherwise convert the ownership of
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    mortgaged
      property that it believes may be contaminated with or affected by pollutants,
      contamination, hazardous wastes or hazardous substances. CitiMortgage will
      not
      be liable to the certificate holders if, based on its belief that no such
      contamination or effect exists, CitiMortgage forecloses on a mortgaged property
      and takes title to such mortgaged property, and the mortgaged property is later
      determined to be so contaminated or affected.

    If
      CitiMortgage does not elect to foreclose on a mortgaged property, CitiMortgage
      may, in the exercise of its judgment, elect to accept a payment or payments,
      in
      connection with the sale by the mortgagor of the mortgaged property or the
      retention by the mortgagor of the mortgaged property, in aggregate amount less
      than the outstanding balance of the mortgage loan and accrued interest
      thereon.

    The
      Trustee will furnish CitiMortgage with any powers of attorney and other
      documents necessary or appropriate to enable CitiMortgage to carry out its
      efforts in realizing upon defaulted mortgage loans hereunder.

     

    3.13 Release
      of mortgage files 

    (a)
      CitiMortgage will promptly notify the Trustee of the payment in full of any
      mortgage loan or CitiMortgage’s receipt of notice that payment in full will be
      escrowed in a manner customary for such purpose, and will request delivery
      to it
      of the mortgage file. CitiMortgage’s notice will include a Servicing Officer
      certification that all amounts that CitiMortgage must deposit in the certificate
      account, in connection with the payment pursuant to section 3.3 have been or
      will be so deposited. Upon receipt of the certification and request, the Trustee
      will promptly direct the Mortgage Document Custodian to release the related
      mortgage documents to CitiMortgage. 

    For
      the
      servicing or foreclosure of any mortgage loan, including collection under a
      primary mortgage insurance policy, the Trustee will, upon CitiMortgage’s request
      and its delivery to the Trustee of a receipt signed by a Servicing Officer,
      direct the Mortgage Document Custodian to release the related mortgage documents
      to CitiMortgage. The Trustee will execute such documents furnished it as are
      necessary to the prosecution of any such proceedings. The receipt will obligate
      CitiMortgage to return the mortgage documents to the Mortgage Document Custodian
      when CitiMortgage no longer needs them, unless the mortgage loan has been
      prepaid or liquidated in the interim, in which case, upon receipt of a Servicing
      Officer certification similar to that described in the first paragraph of this
      section, the Trustee will release the receipt to CitiMortgage.

    (b)
      CitiMortgage will record any instrument of satisfaction of the mortgage executed
      by it if required by applicable law, and deliver it to the person entitled
      thereto. CitiMortgage may not withdraw any expenses incurred in connection
      with
      the instrument of satisfaction from the certificate account. 

     

    3.14 Reports
      to certificate holders and others

    (a) On
      or before each distribution day, CitiMortgage will deliver to each certificate
      and residual certificate holder, any Insurer, the Trustee, the Paying Agent,
      each rating agency and each Underwriter, a distribution
      report
      setting
      forth for that distribution day: 

    (i)
      for
      each pool, the pool distribution amount;

    (ii)
      for
      each outstanding class, the interest distribution for a single
      certificate;

    

    
      
        
           

        

        
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    (iii)
      for
      each outstanding class, the principal distribution for a single certificate,
      net
      of any deductions for reimbursements to PO classes;

    (iv)
      for
      each outstanding PO class, the amount of any reimbursements from the
      subordinated classes;

    (v)
      for
      each outstanding class, the distribution of loss recoveries for a single
      certificate;

    (vi)
      for
      each outstanding class, the principal or notional balance of a single
      certificate, and the aggregate principal or notional balance of the class,
      after
      giving effect to the distributions on the distribution day;

    (vii)
      for
      each outstanding class, any increase or decrease in principal or notional
      balance of a single certificate since the preceding distribution day (including
      for each outstanding accrual class, the amount of any accrued interest added
      to
      the principal balance of a single certificate), after giving effect to the
      distributions on the distribution days;

    (viii)
      for each outstanding class, any decrease in principal balance of a single
      certificate that is not the result of a principal distribution;

    (ix)
      for
      each outstanding target-rate class, its target-rate class percentage and, for
      a
      multi-pool series, its group target rate class percentage; 

    (x)
      for
      each pool, the percentage of unscheduled principal payments on the pool‘s
      target-rate strip allocated on the distribution day to the related group’s
      senior target-rate classes. 

    (xi)
      for
      each outstanding class, any interest allocation carryforward applicable to
      the
      next succeeding distribution day;

    (xii)
      the
      collected servicing fee and master servicing fee for the month preceding the
      month of the distribution day, as reduced, for the servicing fee, by the amount
      of any deposits by CitiMortgage under section 3.4 for prepayment interest
      shortfalls;

    (xiii)
      for each outstanding insured class, the amount of any premiums paid to an
      Insurer out of remittances for the month preceding the distribution day, and
      any
      amount to be paid by an Insurer to holders of single certificates on the
      distribution day;

    (xiv)
      for
      each pool and for the series, the aggregate amount of remittances received
      from
      the first day of the month preceding the month in which the distribution day
      occurs through the first day of the following month;

    (xv)
      for
      each pool and for the series, any servicing account advances, voluntary and
      third-party servicer advances calculated as of the determination date, Paying
      Agent advances, advance account advances, uncommitted cash advances and any
      other amounts charged thereto for the applicable distribution day;

    (xvi)
      for
      each pool and for the series, reimbursement for the distribution day of any
      servicing account advances, voluntary advances, third-party servicer advances,
      Paying Agent advances, advance account advances, and uncommitted cash advances
      for any prior distribution day;

    (xvii)
      for each pool and for the series, the aggregate scheduled principal balance
      of
      the mortgage loans as of the last day of the month preceding the month of the
      distribution, after giving effect to payments on the mortgage loans due on
      the
      related first day of the month and principal prepayments distributed on the
      distribution day;

    (xviii)
      for each pool and for the series, the weighted average mortgage interest rate
      (before deduction of the servicing fee) and the weighted average remaining
      term
      to stated maturity, after giving effect to distributions on the distribution
      day;

    

    
      
        
           

        

        
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    (xix)
      for
      each pool and for the series, the number and aggregate principal balance of
      mortgage loans delinquent 30 days and 60 or more days (as determined by
      CitiMortgage under the Mortgage Bankers Association method); 

    (xx)
      for
      each pool and for the series, the book value of any REO
      property; and

    (xxi)
      any
      other information required for a distribution report on Form 10-D under the
      federal securities laws. 

    The
      distribution report will provide appropriate introductory and explanatory
      information to introduce any material terms, parties or abbreviations used,
      and
      shall state the applicable record, determination and distribution dates.
      CitiMortgage will determine the format of the distribution report, and may
      include additional information relating to the series if CitiMortgage believes
      such information may be material to certificate holders.

    CitiMortgage
      will provide certificate holders that are federally insured savings and loan
      associations with certain reports, and will provide access to information and
      documentation regarding the mortgage loans included in the Trust Fund,
      sufficient to permit such associations to comply with applicable regulations
      of
      the Office of Thrift Supervision.

    Any
      report required by this subsection (a) to be delivered to any person will be
      deemed delivered when it is posted to CitiMortgage’s website, www-.citimortgagembs.-com,
      or to
      any other website of which CitiMortgage gives
      prior notice to the person, and the person can access the statement or report
      on
      the website without paying an additional charge or subscription
      fee.

    (b)
      CitiMortgage will provide the Paying Agent and the Trustee by the third business
      day before each distribution day with a statement of the information set forth
      in clauses (i) through (xii) of subsection (a), such information to be
      given in the aggregate. 

    (c)
      Not
      later than 15 business days after receipt of a written request from the Trustee,
      CitiMortgage will deliver to the Trustee a statement, certified by a Servicing
      Officer, of the aggregate of deposits in and withdrawals from the certificate
      account for each category of deposit specified in sections 3.3 and each category
      of withdrawal specified in section 3.8 for any distribution day specified by
      the
      Trustee.

    (d)
      The
      Trustee may at any time during normal business hours inspect and copy at
      CitiMortgage’s expense CitiMortgage’s books, records and accounts for the
      mortgage loans.

    (e) CitiMortgage
      will provide to any Insurer each notice, report, opinion or other written item
      (other than mortgage documents) delivered pursuant to the penultimate paragraph
      of section 2.3 and sections 2.4, 3.5, 3.6, 3.14(a), 3.19, 3.21, 3.22, 4.3,
      4.4,
      8.8, 9.1, 10.1, and 11.2.

     

    3.15 Tax
      returns and reports 

    (a)
      For
      federal income tax purposes, each constituent REMIC
      will
      have a calendar year taxable year and will maintain its books on the accrual
      method of accounting.

    (b)
      CitiMortgage will prepare and file with the Internal Revenue Service and
      applicable state or local tax authorities income tax or information returns
      for
      each taxable year for each constituent REMIC,
      and will
      furnish to certificate holders the schedules, statements or information, as
      required by the Internal Revenue Code or state or local tax laws, regulations
      or
      rules. 

    Within
      30
      days of the startup day, CitiMortgage will furnish to the Internal Revenue
      Service, on Form 8811 or as otherwise required by the Internal Revenue Code,
      the
      name, title, address, and

    

    
      
        
           

        

        
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    telephone
      number of the person that certificate holders may contact for tax information
      relating to the REMICs,
      together with any additional information required by the Form, and will update
      such information as required by the Internal Revenue Code. Income tax or
      information returns will be signed by the Trustee or any other person required
      to sign the returns by the Internal Revenue Code or state or local tax laws,
      regulations or rules.

    (c)
      In
      the first federal income tax return for each constituent REMIC
      for its
      short taxable year ending December 31 in the year in which the startup day
      occurs, REMIC
      status
      will be elected for that taxable year and all succeeding taxable
      years.

    (d)
      CitiMortgage will maintain records relating to each constituent REMIC,
      including its income, expenses, assets and liabilities, and the adjusted basis
      of its property as required by the Internal Revenue Code, or as necessary to
      prepare the foregoing returns, schedules, statements or
      information.

    (e)
      Each
      holder of a residual certificate will be deemed to have agreed, by acceptance
      thereof, to be bound by this section 3.15 and by section 5.2 and by
“REMIC
      Provisions” in the Series Terms.

     

    3.16 Application
      of buydown funds 

    On
      or
      before the closing date if there are any buydown mortgage loans in the Trust
      Fund, CitiMortgage will open the buydown account with the Depository in the
      name
      of the Trustee, on behalf of the mortgagors. For each buydown mortgage loan,
      on
      the business day following receipt of the mortgagor’s required monthly payment
      under the buydown agreement, CitiMortgage will withdraw from the buydown account
      and deposit in immediately available funds in the certificate account an amount
      which, when added to the mortgagor’s payment, will equal the full monthly
      payment due under the mortgage note. No later than the fifth business day before
      the last business day of each month, CitiMortgage will deposit in the buydown
      account in immediately available funds an amount equal to interest at the rate
      per annum specified in the buydown agreement compounded monthly on the buydown
      funds for each buydown mortgage loan.

    If
      a
      buydown mortgage loan is fully prepaid while buydown funds remain in the buydown
      account, the unpaid principal balance of the buydown mortgage loan will be
      reduced by the amount of the buydown funds (which reduction will constitute
      a
      principal prepayment) and, on the business day following the date of the
      principal prepayment, CitiMortgage will deposit the buydown funds in the
      certificate account. If the property securing a buydown mortgage loan is sold
      in
      liquidation of the buydown mortgage loan (either by CitiMortgage or the insurer
      under any related primary mortgage insurance policy) while buydown funds remain
      in the buydown account, the buydown funds will be (i) deposited in the
      certificate account on the business day following the liquidation as a reduction
      of the unpaid principal balance of the buydown mortgage loan or (ii) to the
      extent required under an applicable primary mortgage insurance policy, paid
      to
      the insurer of the mortgage loan.

     

    3.17 Assumption
      and modification agreements 

    If
      a
      mortgagor transfers a mortgaged property that is subject to an enforceable
      due-on-sale clause, CitiMortgage will accelerate the maturity of the mortgage
      loan to the extent permissible, unless CitiMortgage reasonably believes that
      the
      due-on-sale clause is not enforceable. 

    

    
      
        
           

        

        
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    If
      CitiMortgage reasonably believes that the mortgaged property is not subject
      to
      an enforceable due-on-sale clause, or that enforcement will adversely affect
      primary mortgage insurance coverage, CitiMortgage may enter into an assumption
      and modification agreement with the transferee of the mortgaged property,
      pursuant to which both the transferee and the original mortgagor will be liable
      on the mortgage loan, provided
      that

    · the
      mortgage loan as assumed or modified meets the requirements set forth in this
      agreement for mortgage loans initially included in the Trust Fund, 

    · the
      mortgage loan continues to be covered by any related primary mortgage insurance
      and hazard insurance policy, and 

    · no
      principal, interest or other payment on the mortgage loan is reduced or
      postponed.

    CitiMortgage
      will forward an original of each assumption and modification agreement to the
      Mortgage Document Custodian (with a copy to the Trustee) to be added to the
      related mortgage file, and the agreement will be considered a part of the
      mortgage file for all purposes to the same extent as all other documents and
      instruments that are part of the mortgage file. Any fee collected by
      CitiMortgage for entering into such an agreement will be retained by
      CitiMortgage as additional servicing compensation.

     

    3.18 Refinancings
      and curtailments; loan modifications

    (a)
      In
      addition to waivers and arrangements permitted by section 3.2, CitiMortgage
      may
      refinance affiliated or third-party mortgage loans if the refinancing arises
      out
      of a mortgagor’s request for a refinancing, modification, or other relief from
      the provisions of the mortgage loan.

    On
      the
      business day preceding the distribution day in the month following the effective
      date of the refinancing of a mortgage
      loan pursuant to this section, CitiMortgage will deposit into the certificate
      account the amount of the prepayment in full of the mortgage loan (net of all
      voluntary advances and Paying Agent advances for the mortgage loan, which will
      be reimbursed to the Paying Agent or deemed reimbursed to CitiMortgage, as
      the
      case may be). Upon the Trustee’s receipt of written notification of the deposit
      signed by an Authorized Officer of CitiMortgage, the related mortgage file
      will
      be released, and the Trustee will comply with the provisions of section
      3.13.

    For
      the
      purposes of this section, a “refinancing” will include any process with a
      mortgagor that results in the refinanced mortgage loan being identified and
      serviced as a “new mortgage loan” in CitiMortgage’s books, records and servicing
      files. However, in connection with a partial prepayment, CitiMortgage may reduce
      the scheduled monthly payments on the mortgage loan so that the mortgage loan
      will still be paid in equal monthly installments of principal and interest,
      but
      the prepayment will not change the originally scheduled maturity date, and
      such
      modification will not be considered a “refinancing” for purposes of this
      section. 

    (b)
      CitiMortgage may agree with any homeowner to modify or waive any provision
      of a
      mortgage loan if the modification or waiver does not

    · affect
      the amount or timing of any payment of principal or interest on the mortgage
      loan, 

    · in
      CitiMortgage’s judgment, materially impair the security for, or reduce the
      likelihood of timely payment of amounts due on, the mortgage loan,
      or

     

    

    
      
        
           

        

        
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    otherwise
      constitute a “significant modification” within the meaning of Treasury
      Regulations Section 1.860G-2(b).

    Notwithstanding
      the preceding paragraph, CitiMortgage may agree with any homeowner to modify
      or
      waive any provision of a mortgage loan if 

    · the
      mortgage loan is 90 days or more past due or, in CitiMortgage’s judgment, is
      subject to imminent default, or 

    · CitiMortgage
      delivers to the Trustee an opinion of counsel to the effect that the
      modification or waiver will not affect the REMIC
      status
      of any REMIC.

    CitiMortgage
      will within 10 business days deliver to the Mortgage Document Custodian for
      deposit in the related mortgage file an original signed copy of the agreement
      providing for the modification or waiver. If applicable law requires a
      modification or waiver to be recorded, CitiMortgage will (i) deliver a copy
      of such signed agreement to the Trustee and (ii) deliver to the Trustee
      such document, with evidence of notification upon receipt thereof from the
      public recording office.

    CitiMortgage
      may condition any modification or waiver on the homeowner’s payment to
      CitiMortgage of a reasonable or customary fee for the additional services
      performed, together with reimbursement for CitiMortgage’s out-of-pocket
      expenses, in connection with the modification or waiver. CitiMortgage may retain
      such fees or reimbursements as additional servicing compensation.

     

    3.19 Investment
      accounts

    (a)
      Investments.
      CitiMortgage may invest and reinvest funds in an investment account in
      accordance with this section 3.19 in one or more Eligible Investments (as
      described below) bearing interest or sold at discount. However, no such
      investment may mature later than the business day immediately preceding the
      next
      distribution day, except,
      that
      investments (including repurchase agreements) on which the Paying Agent, in
      its
      commercial capacity, is the obligor may mature on the next distribution
      day.

    The
      Trustee and CitiMortgage will deposit in the certificate account immediately
      upon receipt all proceeds from investment of funds and disposition of assets
      in
      the certificate account. Any loss resulting from such investment will be charged
      to the certificate account. 

    CitiMortgage
      may, from time to time, withdraw from any investment account (other than the
      certificate account), any Investment Income therein, and pay same to itself,
      the
      seller or the holders of the residual certificates, as applicable.

    CitiMortgage
      will not invest funds in the certificate account or sell an investment held
      in
      an investment account unless the investment:

    · is
      made
      in the name of the Trustee (in its capacity as such) or a Qualified Nominee
      of
      the Trustee, and

    · is
      a
“cash flow investment” as defined in Internal Revenue Code Section
      860G(a)(6).

    CitiMortgage
      will not dispose of any Eligible Investment prior to its maturity. However,
      if
      sufficient uninvested funds are
      not
      available in the certificate account to make a required disbursement,
      CitiMortgage may sell or otherwise convert to cash a sufficient amount of the
      investments in the certificate account if, prior to such sale or conversion,
      CitiMortgage receives 

    (i)
      an
      opinion of counsel (which opinion may not be provided by an employee of
      CitiMortgage or of an affiliate of CitiMortgage) that the sale or conversion
      will not constitute a “prohibited transaction” under Internal Revenue Code
      Section 860F(a), or 

    

    
      
        
           

        

        
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    (ii)
      if
      the sale or conversion constitutes such a “prohibited transaction,” (A) the
      consent of the holders of 100% percentage interest of the residual certificates
      to the prohibited transaction together with each such holder’s proportionate
      share of any tax imposed on the Trust Fund attributable to the transaction,
      and
      (B) an opinion of counsel (which opinion may not be provided by an employee
      of
      CitiMortgage or of an affiliate of CitiMortgage) that the transaction will
      not
      disqualify any constituent REMIC
      as a
REMIC.

    The
      Trustee will not have any liability for any loss incurred in connection with
      any
      investment or any sale or liquidation thereof pursuant to this agreement, unless
      caused by its negligence or willful misconduct, or for any insufficiency in
      the
      certificate account or the buydown account, except for losses on investments
      that are liabilities of the Trustee in its commercial capacity.

    (b) Custodial
      investment account.
      Prior
      to the business day preceding the distribution day, CitiMortgage may deposit
      the
      amounts required to be transferred on the determination date from the custodial
      accounts for P&I in a separate account in the name of CitiMortgage and the
      Trustee (such account will be maintained in the trust department of a Depository
      and will bear a designation clearly indicating that the principal of all
      investments in such account is held for the benefit of the Trustee on behalf
      of
      the certificate holders) (the custodial
      investment account)
      for
      investment only in one or more Eligible Investments. CitiMortgage will bear
      any
      and all losses incurred on any investments made with such funds and will be
      entitled to retain all gains realized on such investments as additional
      compensation for its services as master servicer. The amount of any losses
      incurred in respect of any such investments will be deposited in the custodial
      investment account by CitiMortgage out of its own funds immediately as realized.
      Any successor master servicer appointed pursuant to this agreement will not
      be
      responsible for losses attributable to its predecessor. No investments held
      in
      the custodial investment account will mature later than the business day
      preceding the distribution day.

    (c)
      Eligible
      Investments.
      Eligible
      Investments
      means
      any one or more of the following obligations or securities:

    (i) direct
      obligations of, and obligations fully guaranteed by, the United States of
      America, Freddie Mac, Fannie Mae, the Farm Credit Banks, the Federal Home Loan
      Banks, the Student Loan Marketing Association (but only for obligations backed
      by letters of credit or senior obligations) 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; provided, however, that any
      obligation of, or guaranteed by, the Federal Home Loan Banks or the Farm Credit
      Banks or any obligation of, or guaranteed by, Freddie Mac or Fannie Mae, other
      than a senior debt obligation of Freddie Mac or Fannie Mae or a mortgage
      participation or pass-through certificate guaranteed by Freddie Mac or Fannie
      Mae, excluding stripped mortgage securities which are valued greater than par
      on
      the portion of unpaid principal, will be an Eligible Investment only if, at
      the
      time of investment, each rating agency confirms in writing that such investment
      is acceptable;

    (ii) Federal
      Funds, demand and time deposits in, certificates of deposits of, or bankers’
acceptances issued by, any depository institution or trust company (including
      the Trustee or any agent of the Trustee, acting in their respective

    

    
      
        
           

        

        
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    commercial
      capacities) incorporated under the laws of the United States of America or
      any
      state thereof and subject to supervision and examination by federal or state
      banking authorities, so long as at the time of such investment or contractual
      commitment providing for such investment the certificate of deposit or other
      unsecured short-term debt obligations of such depository institution or trust
      company have a maturity of not more than one year and a credit rating of not
      less than “A-1+” (“A-1” if the maturity is not greater than 30 days) by S&P
      if S&P is a rating agency, “P-1” by Moody’s if Moody’s is a rating agency,
      and “F-1” by Fitch if Fitch is a rating agency; each such investment being
      expressly authorized and deemed authorized by a certificate holder’s purchase or
      acceptance of any certificate when acting in the capacity of a fiduciary
      (including a “fiduciary” of an “employee benefit plan” subject to ERISA,
      as
      those term are defined in Sections 3(21) and 3(3) of ERISA,
      respectively) which purchase or acceptance will also evidence and be deemed
      to
      evidence any such certificate holder’s representation and warranty to
      CitiMortgage, the Certificate Registrar and the Trustee and any agent of the
      Trustee that such certificate holder is duly authorized by and empowered under
      appropriate governing instruments (for example, an employee benefit plan, in
      the
      case of an ERISA
      fiduciary) to give such authorization; and money market funds investing
      exclusively in any of the investments discussed in this definition of Eligible
      Investments with a rating of not less than “A-1+” (“A-1” if the maturity is not
      greater than 30 days) by S&P if S&P is a rating agency, “F-1” by Fitch
      if Fitch is a rating agency, and “P-1” by Moody’s if Moody’s is a rating
      agency;

    (iii) repurchase
      obligations for (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 where such security has a remaining maturity of one year or less and where
      such repurchase obligation has been entered into with a depository institution
      or trust company (acting as principal) with a rating of not less than “A-1+” by
      S&P if S&P is a rating agency, “P-1” by Moody’s if Moody’s is a rating
      agency, and “F-1” by Fitch if Fitch is a rating agency;

    (iv) securities
      bearing interest or sold at a discount issued by any corporation incorporated
      under the laws of the United States of America or any state thereof which have
      a
      maturity not greater than 30 days and an unsecured long-term debt rating of
      at
      least “AA” if S&P is a rating agency, “AA” if Fitch is a rating agency, and
“Aa” if Moody’s is a rating agency, or an unsecured short-term debt rating, of
      at least “A-1” if S&P is a rating agency, “F-1” if Fitch is a rating agency,
      and “P-1” if Moody’s is a 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
      Eligible Investments to the extent that investment therein will cause the then
      outstanding principal balance of securities issued by such corporation and
      held
      as part of the Trust Fund to exceed 10% of the aggregate current principal
      balance of certificates outstanding and of the current percentage interest
      of
      the residual certificates outstanding, and the aggregate principal balance
      of
      all cash and Eligible Investments, held in the Trust Fund;

    

    
      
        
           

        

        
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    (v) 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 at the time of such
      investment a rating of not less than “A-1+” (“A-1” if the maturity is not
      greater than 30 days and such commercial paper does not exceed 20% of the then
      current balance of the certificates) by S&P if S&P is a rating agency,
“F-1” by Fitch if Fitch is a rating agency, and “P-1” by Moody’s if Moody’s is a
      rating agency;

    (vi) a
      Qualified GIC;

    (vii) certificates
      or receipts representing direct ownership interests in future interest or
      principal payments on obligations of the United States of America or its
      agencies or instrumentalities (which obligations are backed by the full faith
      and credit of the United States of America) held by a custodian on behalf of
      the
      holders of such receipts;

    (viii) any
      other
      money market deposit, obligation, security or investment bearing interest or
      sold at a discount which has an unsecured short-term debt rating of at least
      “A-1+” (“A-1” if the maturity is not greater than 30 days and such investments
      do not exceed 20% of the then scheduled principal balance of the mortgage loans)
      if S&P is a rating agency, “F-1” if Fitch is a rating agency, and “P-1” if
      Moody’s is a rating agency, or if such investment relates to a money market
      fund, such fund must be rated in the highest rating category by each rating
      agency (which, for S&P, is “AAAm” or “AAAm-G”); and

    (ix) any
      other
      demand or time deposit, obligation, security or investment bearing interest
      or
      sold at a discount that each rating agency confirms in writing is
      acceptable;

    provided,
      that
      each such Eligible Investment is a “permitted investment” as defined in Internal
      Revenue Code Section 860G(a)(5).

     

    3.20 Paying
      Agent and Certificate Registrar

    (a)
      Paying
      Agent.
      CitiMortgage or the Trustee may remove a Paying Agent, and CitiMortgage, with
      the Trustee’s approval, may appoint another Paying Agent. 

    A
      Paying
      Agent 

    · may
      not
      be an Originator, CitiMortgage or an affiliate of CitiMortgage unless the Paying
      Agent is an agency and trust department of Citibank, N.A., 

    · must
      be
      authorized to exercise corporate trust powers under the laws of its jurisdiction
      of organization, and 

    · must
      be
      rated at least “A-1” by S&P if S&P is a rating agency, and at least
“F-1” by Fitch if Fitch is a rating agency. 

    If
      no
      Paying Agent is appointed, the Trustee will be the Paying Agent. CitiMortgage
      will notify the rating agencies of any change of Paying Agent.

    The
      Paying Agent will

    · hold
      all
      amounts deposited with it by CitiMortgage or the Trustee for payment on the
      certificates in trust for the benefit of the certificate holders and any Insurer
      until the amounts are paid to the certificate holders or the Insurer or
      otherwise disposed of in accordance with this agreement,

    · give
      the
      Trustee notice of any default by CitiMortgage in making any such deposit,
      and

    · during
      the continuance of a default by CitiMortgage in making such a deposit, upon
      the
      Trustee’s written request, immediately pay to the Trustee all amounts so held in
      trust by the Paying Agent.

    CitiMortgage
      will cause any Paying Agent that is not the Trustee or a signatory to this
      agreement to execute and deliver to

    

    
      
        
           

        

        
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    the
      Trustee an instrument in which the Paying Agent agrees with the Trustee that
      the
      Paying Agent will have all the rights and obligations of a Paying Agent under
      this agreement.

    (b)
      Certificate
      Registrar.
      CitiMortgage or the Trustee may remove a Certificate Registrar, and
      CitiMortgage, with the Trustee’s approval, may appoint another Certificate
      Registrar. 

    A
      Certificate Registrar 

    · may
      not
      be an Originator, CitiMortgage or an affiliate of CitiMortgage unless the
      Certificate Registrar is an agency and trust department of Citibank, N.A.,
      and

    · must
      be
      authorized to exercise corporate trust powers under the laws of its jurisdiction
      of organization. 

    If
      no
      Certificate Registrar is appointed, the Trustee will be the Certificate
      Registrar.

     

    3.21 Exchange
      Act reporting

    (a)
      CitiMortgage, as servicer, will prepare and file all reports required to be
      filed by CMSI,
      as
      depositor, under the Exchange Act (other than Forms 10-K), including required
      periodic reports on Form 10-D, and any required current report on Form 8-K.
      CMSI
      authorizes CitiMortgage to sign and file such reports on behalf of CMSI.
      CMSI will
      file
      all required Forms 10-K.

    (b)
      For
      each calendar year for which CMSI
      is
      required to file a Form 10-K with the Securities and Exchange Commission for
      this series, each party to this agreement who

    · participates
      in the servicing function, within the meaning of section 1122 of Regulation
      AB
      under the Securities Act (Regulation
      AB),
      for
      this series, or who controls such a participant, will submit, or will cause
      such
      controlled participant to submit, by March 1 of the following year, a report
      on
      an assessment of compliance covering the servicing criteria set forth opposite
      its name on schedule 1, “Servicing criteria to be addressed in report on
      assessment of compliance” (as such schedule may be modified pursuant to section
      3.22(c) below), and an attestation report of a registered public accounting
      firm, all as required by and in full conformity with the requirements of rule
      1122, and

    · is
      a
      servicer, within the meaning of section 1123 of Regulation AB, for this series,
      or who controls such a servicer, will submit, or will cause such controlled
      servicer to submit, by March 1 of the following year, a statement of compliance
      signed by an authorized officer, as required and in full conformity with the
      requirements of rule 1123.

    (c)
      Schedule 1 may be modified 

    · by
      agreement of CMSI
      and each
      party affected by such modification, without the consent of any other party
      or
      the certificate holders, and

    · by
      CMSI,
      without
      the consent of any other party or the certificate holders, if
      CMSI
      is
      advised by counsel that such change may be required to comply with Regulation
      AB. 

    (d)
      CMSI
      and each
      other person who is or becomes a party to this agreement shall render all
      reasonably requested assistance to CMSI
      and
      CitiMortgage in providing information necessary for the preparation of such
      reports. CMSI
      and
      CitiMortgage shall require each third-party servicer, and any other person
      who
      participates in the servicing function, to agree to provide such
      assistance.

    (e)
      CitiMortgage hereby appoints KPMG LLP as its independent accountants for
      purposes of preparing and delivering for each year an attestation on
      CitiMortgage’s assessment of compliance with the applicable servicing criteria
      as of and for the period ending the end of such year. The

    

    
      
        
           

        

        
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    attestation
      report is to be furnished to CitiMortgage and the Trustee by March 1 in the
      following year, and must be made in accordance with standards for attestation
      engagements issued or adopted by the Public Company Accounting Oversight
      Board.

    If
      such
      firm resigns, CitiMortgage will promptly appoint a successor firm of independent
      accountants of recognized national reputation. CitiMortgage will promptly notify
      the Trustee if CitiMortgage fails to appoint a successor firm of independent
      accountants within 15 days after such resignation. If CitiMortgage does not
      appoint a successor within 10 days thereafter, the Trustee will promptly appoint
      a successor firm of independent accountants of recognized national reputation.
      The fees of the independent accountants and any successor will be paid by
      CitiMortgage as servicer, or by any successor servicer.

     

    4 CitiMortgage

     

    4.1 Liability
      of CitiMortgage and others

    Each
      of
      CitiMortgage, CMSI
      and
      Citibank, N.A. will be liable under this agreement to any person or to the
      certificate holders only to the extent of obligations specifically undertaken
      by
      CitiMortgage, CMSI
      or
      Citibank, N.A. in this agreement.

    Neither
      CitiMortgage, CMSI
      nor
      Citibank, N.A.,
      nor any
      of their directors, officers, employees and agents will be liable to the Trust
      Fund or the certificate holders for any action, or for refraining from taking
      any action, pursuant to this agreement, or for errors in judgment, provided,
      however, that neither CitiMortgage, CMSI,
      Citibank, N.A., nor any such person will be protected against any liability
      that
      would otherwise be imposed for willful misfeasance, bad faith or gross
      negligence in the performance, or for reckless disregard, of their obligations
      under this agreement. CitiMortgage, CMSI,
      Citibank, N.A. and any of their directors, officers, employees or agents may
      rely on any document prima
      facie
      properly
      executed and submitted by any person as to any matters arising under this
      agreement.

    CitiMortgage,
      CMSI,
      Citibank, N.A., and each of their directors, officers, employees and agents
      will
      be indemnified and held harmless by the Trust Fund against any loss, liability
      or expense incurred in connection with any actual or threatened legal or
      regulatory proceedings relating to this agreement or the certificates, other
      than a loss, liability or expense incurred by reason of willful misfeasance,
      bad
      faith or gross negligence in the performance, or reckless disregard, of their
      obligations under this agreement. 

    CitiMortgage
      need not appear in, prosecute or defend any legal action that is not incidental
      to its duties to service the mortgage loans in accordance with this agreement
      and that in its opinion may involve it in any expense or liability. CitiMortgage
      may, however, undertake any such action it deems desirable to enforce or secure
      the rights and duties of the parties or the interests of the certificate
      holders. CitiMortgage’s legal expenses and costs of such action and any
      resulting liability will be expenses, costs and liabilities of the Trust Fund,
      for which CitiMortgage will be reimbursed out of the certificate account.

    Notwithstanding
      the foregoing, CitiMortgage will indemnify, defend and hold harmless the Trustee
      and the Trust Fund against any damages, claims or liabilities arising out of
      any
      violation (or claimed violation) prior to the closing date of any predatory
      lending law.

     

     

    

    
      
        
           

        

        
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    4.2
      Assumption of CitiMortgage’s obligations by affiliate

    Any
      corporation into which CitiMortgage is merged or consolidated, or that results
      from a merger, conversion or consolidation involving CitiMortgage, or that
      succeeds to the business of CitiMortgage, or more than 50% of the voting stock
      of which is, directly or indirectly, owned by Citigroup Inc., and that executes
      an agreement of assumption to perform all of CitiMortgage’s obligations under
      this agreement, will be CitiMortgage’s successor under this agreement, 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. Such
      agreement of assumption will not, however, release CitiMortgage from any of
      its
      obligations or liabilities under this agreement.

     

    4.3 Maintenance
      of office or agency

    CMSI
      shall
      maintain or cause to be maintained at its expense an office or offices or agency
      or agencies where the certificates may be surrendered for registration of
      transfer or exchange and where notices and demands to or upon CMSI
      in
      respect of the certificates and this agreement may be served. CMSI
      initially appoints the Certificate Registrar designated in the Series Terms
      as
      its office for purposes of receipt of notices and demands. CMSI
      will
      give prompt written notice to CitiMortgage, the Trustee and the certificate
      holders of any change in the location of the Certificate Register or any such
      office or agency.

     

    4.4 Servicer
      not to resign

    Subject
      to sections 4.2 and 4.5, CitiMortgage will not resign as servicer without the
      consent of the Trustee, any Insurer, the holders of more than 2/3 of the voting
      interests of the outstanding certificates and 2/3 of the percentage interests
      of
      the residual certificates, except upon a determination that the performance
      of
      its duties hereunder is no longer permissible under applicable law. Any such
      determination permitting the resignation of CitiMortgage as Servicer will be
      supported by an opinion of counsel to such effect delivered to the Trustee.
      No
      resignation by CitiMortgage will become effective until the Trustee or a
      successor servicer and master servicer have assumed CitiMortgage’s obligations
      in accordance with section 7.2.

     

    4.5 Delegation
      of duties

    CitiMortgage
      may without notice or consent delegate any of its servicing duties, and any
      rights relating to such duties, to any person or persons, including a person
      more than 50% of whose stock is owned, directly or indirectly, by Citigroup
      Inc.; provided that each such person that services any mortgage loans has been
      approved as a seller/servicer by the Federal Housing Administration,
GNMA,
      Fannie
      Mae or Freddie Mac,
      and has
      been approved in writing by the rating agencies. Such delegation will not,
      however, relieve CitiMortgage of its responsibility for such duties. Each
      delegee of CitiMortgage’s servicing duties will have those powers and duties
      that are granted to or required of CitiMortgage as servicer or master servicer
      under this agreement for such duties, subject to the limitations imposed by
      the
      agreement between CitiMortgage and such delegee.

     

    4.6 Errors
      and omissions insurance

    CitiMortgage
      will maintain in force 

    · a
      policy
      or policies of insurance covering errors and omissions in the performance of
      its
      servicing obligations, and 

    · a
      fidelity bond for its officers, employees and agents. 

    

    
      
        
           

        

        
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    Such
      policies and bond will, together, comply with Fannie Mae or Freddie Mac
      requirements for persons servicing mortgage loans purchased by such
      association.

     

    5 The
      certificates

     

    5.1 The
      certificates

    (a)
      The
      certificates and residual certificates will be substantially in the forms set
      forth in exhibit A. The certificates will be issued in the denominations
      specified in the Series Terms and will be executed by manual or facsimile
      signature on behalf of CMSI
      by its
      Chairman, President, one of its Vice Presidents, or one of its Assistant Vice
      Presidents. Certificates bearing the manual or facsimile signatures of
      individuals who were authorized to sign on behalf of CMSI
      when the
      signatures were affixed will bind CMSI,
      even if
      prior to the authentication and delivery of the certificates some of the
      individuals ceased to be authorized or to hold such offices. 

    No
      certificate will be entitled to any benefit under this agreement, or be valid
      for any purpose, unless it authenticated substantially in the form set forth
      in
      exhibit A. The authentication must be manually signed by the Trustee or an
      Authenticating Agent appointed pursuant to section 8.12, and such signature
      will
      be conclusive evidence, and the only evidence, that the certificate has been
      duly authenticated and delivered. All certificates will be dated the date of
      their authentication. 

    (b) Upon
      original issuance, book-entry certificates will be issued in the form of one
      or
      more typewritten certificates, to be delivered to the initial Clearing Agency,
      by, or on behalf of, CMSI.
      Such
      certificates will initially be registered on the Certificate Register in the
      name of the nominee of the initial Clearing Agency, and will bear a legend
      in
      substantially the following form:

    “Unless
      this certificate is presented by an authorized representative of [the Clearing
      Agency] to Citicorp Mortgage Securities, Inc. or its agent for registration
      of
      transfer, exchange, or payment, and any certificate issued is registered in
      the
      name of [the Clearing Agency nominee] or such other name as requested by an
      authorized representative of [the Clearing Agency] (and any payment is made
      to
      [the Clearing Agency nominee] or to such other entity as is requested by an
      authorized representative of [the Clearing Agency]), any transfer, pledge,
      or
      other use hereof for value or otherwise by or to any person is wrongful inasmuch
      as the registered owner hereof, [the Clearing Agency nominee], has an interest
      herein.”

    No
      beneficial owner will receive a definitive certificate representing such
      beneficial owner’s interest in the book-entry certificates, except as provided
      in section 5.6. Until definitive certificates have been issued to beneficial
      owners pursuant to section 5.6:

    (i) This
      section 5.1(b) will be in full force and effect.

    (ii) CMSI,
      the
      Certificate Registrar and the Trustee may deal with the Clearing Agency for
      all
      purposes (including distributions on the book-entry certificates and actions
      by
      the holders of book-entry certificates) as the authorized representative of
      the
      beneficial owners.

    (iii) To
      the
      extent that this section 5.1(b) conflicts with any other provision of this
      agreement, this section 5.1(b) will control.

    (iv) The
      rights of beneficial owners will be exercised only through the Clearing Agency
      and will be limited to those established by law, the rules, regulations and
      procedures of the Clearing Agency and agreements between such beneficial
      owners

    

    
      
        
           

        

        
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    and
      the
      Clearing Agency or the Clearing Agency Participants. For book-entry
      certificates, references in this agreement to

    · actions
      by certificate holders will refer to actions taken by the Clearing Agency upon
      instructions from the Clearing Agency Participants, and

    · distributions,
      notices, reports and statements to certificate holders will refer to
      distributions, notices, reports and statements to the Clearing Agency or its
      nominee, as registered holder of the book-entry certificates for the
      distribution to beneficial owners in accordance with the procedures of the
      Clearing Agency.

    (v) The
      initial Clearing Agency will make book-entry transfers among the Clearing Agency
      Participants, and will receive and transmit distributions of principal and
      interest on the certificates to the Clearing Agency Participants, for
      distribution to the beneficial owners or their nominees.

    For
      purposes of any provision of this agreement requiring or permitting actions
      with
      the consent of, or at the direction of, holders of book-entry certificates
      evidencing specified voting interests, such direction or consent will be given
      by beneficial owners having the requisite percentage interests.

    Until
      definitive certificates are issued to beneficial owners pursuant to section
      5.6,
      copies of the reports or statements referred to in section 3.14 will be
      available to beneficial owners upon written request to the Trustee at the
      corporate trust office or, if Citibank, N.A. is the Paying Agent, at the website
      referred to in section 3.14.

     

    5.2 Registration
      of transfer and exchange of certificates

    (a)
      CMSI
      will
      maintain at its expense an office or offices or agency or agencies where the
      certificates may be surrendered for registration of transfer or exchange and
      where notices and demands to or upon CMSI
      relating
      to the certificates and this agreement may be served. CMSI
      initially appoints the Certificate Registrar designated in the Series Terms
      as
      its office for purposes of receipt of notices and demands. 

    CMSI
      will
      maintain a Certificate
      Register
      at such
      office in which, subject to such reasonable regulations as it prescribes,
CMSI
      will
      provide for the registration and transfer of certificates. CMSI
      will
      give prompt written notice to the Trustee and to the certificate holders of
      any
      change in the location of the Certificate Register or any such office or
      agency.

    Upon
      surrender for registration of transfer of any certificate at the office or
      agency, CMSI
      will
      execute and the Trustee or the Authenticating Agent will authenticate and
      deliver, in the name of the designated transferee or transferee, one or more
      new
      certificates in authorized denominations of the same aggregate number of single
      certificates or the same aggregate percentage interest, as the case may
      be.

    At
      the
      option of the certificate holder, certificates may be exchanged for other
      certificates of authorized denominations evidencing the same aggregate number
      of
      single certificates or the same aggregate percentage interest, as the case
      may
      be, upon surrender of the certificates to be exchanged at the office or agency.
      CMSI
      will
      execute and the Trustee or Authenticating Agent will authenticate and deliver
      the certificates that the certificate holder is entitled to receive.

    Every
      certificate surrendered for registration of transfer or exchange will be
      accompanied by a written instrument of transfer in form satisfactory to the
      Trustee, CMSI
      and the
      Certificate Registrar, duly

    

    
      
        
           

        

        
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    executed
      by the holder or his attorney duly authorized in writing. 

    No
      service charge will be made for any registration of transfer or exchange of
      certificates, but the Certificate Registrar may require a payment sufficient
      to
      cover any tax or governmental charge imposed in connection with the transfer
      or
      exchange.

    All
      certificates surrendered for registration of transfer and exchange will be
      canceled and, subject to the record retention requirements of the Exchange
      Act,
      subsequently destroyed by the Trustee or, at its direction, by the Certificate
      Registrar.

    The
      Certificate Registrar will provide the Paying Agent and the Trustee by the
      third
      business day before each distribution day, the names and addresses of each
      certificate holder as of the record date and the number of single certificates
      or percentage interest it holds of record.

    (b)
      Notwithstanding the foregoing section 5.2(a), no legal or beneficial interest
      in
      all or any portion of a residual certificate may be transferred, directly or
      indirectly, to a “disqualified organization“ within the meaning of Internal
      Revenue Code Section 860E(e)(5), or to an agent of a disqualified organization
      (including a broker, nominee, or other middleman) (an Agent)
      and any
      such purported transfer will be void and of no effect. Further, no legal or
      beneficial interest in all or any portion of a residual certificate may be
      registered in the name of a Plan or a person investing the assets of a Plan
      (such Plan or person an ERISA
      Prohibited holder)
      or in
      the name of a person that is not (i) a U.S. person or (ii) a non-U.S. person
      that holds the residual certificate in connection with the conduct of a trade
      or
      business within the United States and has furnished the transferor, the
      Certificate Registrar, and the Trustee with an effective Internal Revenue
      Service Form W-8ECI
      or (iii)
      a non-U.S. person that has delivered to the transferor, the Certificate
      Registrar, and the Trustee an opinion of a nationally recognized tax counsel
      to
      the effect that the transfer of the residual certificate to it is in accordance
      with the requirements of the Internal Revenue Code and that such transfer of
      the
      residual certificate will not be disregarded for federal income tax purposes
      (any such person who is not described in clauses (i), (ii) or (iii) above being
      referred to herein as a “Non-permitted Foreign holder”). Furthermore, no legal
      or beneficial interest in all or any portion of a residual certificate may
      be
      transferred, directly or indirectly, to a foreign permanent establishment or
      fixed base, within the meaning of an applicable income tax treaty, of the
      transferee or any other person. CMSI
      will not
      execute and the Trustee or Authenticating Agent will not authenticate and
      deliver, a new residual certificate in connection with any transfer of a
      residual certificate, and neither CMSI,
      the
      Certificate Registrar nor the Trustee will accept a surrender for transfer
      or
      registration of transfer, or register the transfer of, any residual certificate
      unless the transferor will have provided to CMSI,
      the
      Certificate Registrar and the Trustee an affidavit, substantially in the form
      of
      Appendix 1 hereto, signed by the transferee, to the effect that the transferee
      is not such a disqualified organization, an agent for any entity as to which
      the
      transferee has not received a substantially similar affidavit, an ERISA
      Prohibited holder, a Non-permitted Foreign holder, or a person for whom income
      on the residual certificate is attributed to a foreign permanent establishment
      or fixed base, within the meaning of an applicable income tax treaty, of the
      transferee or any other person, accompanied by a written statement signed by
      the
      transferor to the effect that, as of the time of the transfer, the transferor
      has no actual knowledge that such affidavit is

    

    
      
        
           

        

        
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    false.
      Upon notice by CMSI
      that any
      legal or beneficial interest in any portion of a residual certificate has been
      transferred, directly or indirectly, to a disqualified organization or an Agent
      in contravention of the foregoing restrictions, the Trustee will furnish to
      the
      Internal Revenue Service and the transferor of such residual certificate or
      to
      such Agent, within 60 days of the request therefor by such
      transferor or
      such
      Agent, and CMSI
      agrees
      to provide the Trustee with the computation of such information necessary to
      the
      application of Internal Revenue Code Section 860E(e) as may be required by
      the
      Internal Revenue Code, including but not limited to the present value of the
      total anticipated excess inclusions for such residual certificate (or portion
      thereof) for periods after such transfer. At the election of CMSI,
      the
      reasonable cost of computing and furnishing such information may be charged
      to
      the transferor or such Agent; however, the Trustee and CMSI
      will in
      no event be excused from furnishing such information. Every holder of a residual
      certificate will be deemed to have consented to such amendments to this
      agreement as may be required to further effectuate the restrictions on transfer
      of residual certificates to a disqualified organization, an Agent, an
ERISA
      Prohibited holder or a Non-permitted Foreign holder.

    The
      affidavit described in the preceding paragraph will also contain the statement
      of the transferee that it (i) has historically paid its debts as they have
      come
      due and intends to do so in the future, (ii) understands that it may incur
      liabilities in excess of cash flows generated by the residual certificate,
      (iii)
      intends to pay taxes associated with holding the residual certificate as they
      become due, (iv) will not cause the income for the residual certificate to
      be
      attributable to a foreign permanent establishment or fixed base, within the
      meaning of an applicable income tax treaty, of the transferee or any other
      person and (v) will not transfer the residual certificate to any person or
      entity that does not provide a similar affidavit. The transferor’s statement to
      the Trustee and the Certificate Registrar accompanying the affidavit will state
      that, after conducting a reasonable investigation of the financial condition
      of
      the transferee, the transferor has no knowledge or reason to know that the
      statements made by the transferee for clauses (i) and (iii) of the preceding
      sentence are false. Each residual certificate will bear a legend referring
      to
      the restrictions contained in this paragraph and the preceding
      paragraph.

    Notwithstanding
      the foregoing, no transfer of any private certificate may be made unless such
      private certificate has been registered under the Securities Act and applicable
      state securities or “blue sky” laws, or an exemption from the Securities Act and
      applicable state securities or “blue sky” laws is available. Upon surrender for
      registration of transfer of any private certificate, (1) neither the Trustee
      nor
      the Certificate Registrar will accept surrender for transfer or registration
      of
      transfer of, or register the transfer of, any private certificate and (2)
CMSI
      will not
      execute, and neither the Trustee nor the Authenticating Agent will authenticate
      and deliver, any new private certificate in connection with the transfer of
      any
      private certificate, unless either (A) such private certificate has been
      registered under the Securities Act and applicable state securities or “blue
      sky” laws, or (B) exemptions from the registration requirements of the
      Securities Act and applicable state securities or “blue sky” laws are available,
      and the transferee delivers to CMSI,
      the
      Trustee and the Certificate Registrar a letter substantially to the effect
      set
      forth in exhibit

    

    
      
        
           

        

        
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    D
      to this
      agreement and (1) if such transferee is not a “Qualified Institutional Buyer”
within the meaning of Rule 144A of the Securities Act, and if so requested
      by
CMSI,
      an
      opinion of counsel acceptable to CMSI
      will
      have been delivered to CMSI,
      the
      Trustee, and the Certificate Registrar, to the effect that such transfer is
      in
      compliance with either subclause (A) or subclause (B) of this clause (i) of
      this
      section 5.2; or (2) if such transfer is to a non-institutional investor, unless
      such investor is an accredited investor (as defined in Regulation D under the
      Securities Act) and has a net worth (exclusive of primary residence) of at
      least
      $1,000,000 as confirmed in writing to the Trustee and the Certificate
      Registrar.

    No
      transfer of an ERISA
      Restricted Certificate may be made unless any proposed transferee (i) executes
      a
      representation letter in substantially the form of exhibit E hereto and in
      substance satisfactory to the Trustee, the Certificate Registrar and
CMSI
      either
      stating (a) that it is not, and is not acting on behalf of, any employee benefit
      plan subject to Title I of ERISA
      or
      Section 4975 of the Internal Revenue Code, or a governmental plan, as defined
      in
      Section 3(32) of ERISA,
      subject
      to any federal, state or local law (Similar
      Law)
      which
      is, to a material extent, similar to the foregoing provisions of ERISA
      or the
      Internal Revenue Code (collectively, a “Plan”) or using the assets of any such
      Plan to effect such purchase or (b) as to the class B-4, class B-5 and class
      B-6
      certificates only, it is an insurance company and the source of funds used
      to
      purchase the class B-4, class B-5 or class B-6 certificates is an “insurance
      company general account” (as such term is defined in Section V(e) of Prohibited
      Transaction Class Exemption 95-60 (“PTE
      95-60”),
      60 Fed. Reg. 35925 (July 12, 1995)) and there is no Plan for which the amount
      of
      such general accounts reserves and liabilities for the contracts) held by or
      on
      behalf of such Plan and all other Plans maintained by the same employer (or
      affiliate thereof as defined in Section V(a)(1) of PTE
      95-60)
      or by the same employee organization, exceed 10% of the total of all reserves
      and liabilities of such general account (as such amounts are determined under
      Section I(a) of PTE
      95-60)
      at the date of acquisition or (ii) provides (A) an opinion of counsel in form
      and substance satisfactory to the Trustee, the Certificate Registrar and
CMSI
      that the
      purchase or holding of ERISA
      Restricted Certificate by or on behalf of such Plan will not result in the
      assets of the Trust being deemed to be “plan assets” and subject to the
      prohibited transaction provisions of ERISA
      and the
      Internal Revenue Code or Similar Law and will not subject CMSI,
      the
      Trustee or the Certificate Registrar to any obligation in addition to those
      undertaken in this agreement and (B) such other opinions of counsel, officers’
certificates and agreements as CMSI,
      the
      Trustee or the Certificate Registrar may require in connection with such
      transfer.

     

    5.3 Mutilated,
      destroyed, lost or stolen certificates

    If
      

    · any
      mutilated certificate is surrendered to the Certificate Registrar, or the
      Certificate Registrar receives evidence to its satisfaction of the destruction,
      loss or theft of any certificate, 

    · each
      of
      CMSI,
      the
      Certificate Registrar and the Trustee receive such security or indemnity as
      it
      requires to save it harmless, and

    · neither
      the Certificate Registrar nor the Trustee is notified that the certificate
      has
      been acquired by a protected purchaser under Article 8 of the Uniform
      Commercial

    

    
      
        
           

        

        
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    Code
      as
      in effect in the applicable jurisdiction, 

    then
      CMSI
      will
      execute and the Trustee or Authenticating Agent will authenticate and deliver,
      in exchange for or in lieu of such mutilated, destroyed, lost or stolen
      certificate, a new certificate of like tenor and initial principal balance,
      initial notional balance or percentage interest. In connection with the issuance
      of any new certificate under this section 5.3, the Certificate Registrar may
      require a payment sufficient to cover any tax or other governmental charge
      imposed and any other expenses (including the fees and expenses of the Trustee
      and the Certificate Registrar) in connection with the issuance. Any duplicate
      certificate issued pursuant to this section 5.3 will constitute complete and
      indefeasible evidence of ownership in the Trust Fund, as if originally issued
      on
      the closing date, whether or not the lost, stolen or destroyed certificate
      is
      found at any time.

     

    5.4 Persons
      deemed owners

    Prior
      to
      due presentation of a certificate for registration of transfer, CMSI,
      the
      Trustee, any Insurer, the Certificate Registrar and any agent of CMSI,
      the
      Trustee or the Certificate Registrar may treat the person in whose name the
      certificate is registered as the owner of the certificate for the purpose of
      receiving distributions pursuant to section 3.6 and for all other purposes
      whatsoever, and neither CMSI,
      the
      Trustee, any Insurer, the Certificate Registrar nor any agent of CMSI,
      the
      Trustee or the Certificate Registrar will be affected by any notice to the
      contrary.

     

    5.5 Access
      to list of certificate holders’ names and addresses

    If
      the
      Trustee is not the Certificate Registrar and requests CMSI
      or the
      Certificate Registrar to provide a list of the names and addresses of
      certificate holders, CMSI
      or the
      Certificate Registrar will furnish to the Trustee, within 15 days after receipt
      of the request, a list as of the most recent record date, in such form as the
      Trustee reasonably requires. 

    If
      three
      or more certificate holders 

    · request
      such information in writing from the Trustee, 

    · state
      that they desire to communicate with other certificate holders regarding their
      rights under this agreement or under the certificates, and 

    · provide
      a
      copy of the communication they propose to transmit, 

    then
      the
      Trustee will, within five business days after the receipt of the request, afford
      the certificate holders access during normal business hours to the most recent
      list held by the Trustee, if any. If such list is as of a date more than 90
      days
      prior to the date of receipt of the certificate holders’ request, the Trustee
      will promptly request from CMSI
      or the
      Certificate Registrar a current list and will afford the certificate holders
      access to the list promptly upon its receipt by the Trustee. Every certificate
      holder, by receiving and holding a certificate, agrees that neither CMSI,
      the
      Certificate Registrar nor the Trustee will be held accountable by reason of
      the
      disclosure of any such information as to the list of the certificate holders,
      regardless of the source from which the information is derived.

     

    5.6 Definitive
      certificates

    If
      

    · DTC
      advises
      the Trustee and the Certificate Registrar in writing that the Clearing Agency
      is
      no longer willing or able properly to discharge its responsibilities as
      depository for the book-entry certificates, and 

    · CMSI
      is
      unable to locate a qualified successor, 

    

    
      
        
           

        

        
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    the
      Certificate Registrar will notify the beneficial owners, through the Clearing
      Agency, of the occurrence of such event and of the availability of definitive
      certificates to beneficial owners requesting them. Upon surrender to the
      Certificate Registrar by the Clearing Agency of the certificates held of record
      by its nominee, accompanied by re-registration instructions and directions
      to
      execute and authenticate new certificates from CMSI,
      the
      Trustee or the Authenticating Agent will execute and authenticate definitive
      certificates for delivery. CMSI
      will
      arrange for, and will bear all costs of, the printing and issuance of the
      definitive certificates. Neither CMSI,
      the
      Trustee, the Certificate Registrar nor the Authenticating Agent will be liable
      for any delay in delivery of such instructions by the Clearing Agency and may
      conclusively rely on, and will be protected in relying on, such
      instructions.

     

    5.7 Notices
      to Clearing Agency

    Whenever
      notice or other communication to the holders of book-entry certificates is
      required under this agreement, until definitive certificates are issued to
      beneficial owners pursuant to section 5.6, the Trustee will deliver such notices
      and communications to the Clearing Agency.

     

    6 [Reserved]

     

    7 Default

     

    7.1 Events
      of Default

    If
      any of
      the following events (Events
      of Default)
      is
      continuing:

    (a)
      CitiMortgage, as servicer or master servicer, fails to make a full payment,
      deposit, transfer or distribution required of it in such capacities under this
      agreement, and the failure continues unremedied for 

    · 10
      business days after the Trustee gives written notice of the failure to
      CitiMortgage, or the holders of the Required Amount of certificates give written
      notice of the failure to CitiMortgage and the Trustee, if the failure results
      from an error in calculating the amount of the required deposit, transfer or
      distribution, or 

    · three
      business days after such notice if the failure results from any other reason;
      or

    (b)
      CitiMortgage fails to reimburse a Paying Agent advance as required by section
      3.5, and the failure is not remedied for 60 business days after the Trustee
      or
      the Paying Agent gives CitiMortgage written notice of the failure, or the
      holders of the Required Amount of Certificates give CitiMortgage and the Trustee
      such notice; or

    (c)
      CitiMortgage fails to observe or perform in any material respect any other
      covenant or agreement of CitiMortgage set forth in the certificates or in this
      agreement, and the failure 

    · materially
      and adversely affects the rights of the certificate holders, and 

    · continues
      unremedied for 60 business days after the Trustee gives CitiMortgage written
      notice of the failure, requiring the failure to be remedied, or the holders
      of
      the Required Amount of Certificates give such notice to CitiMortgage and the
      Trustee; or

    (d)
      a
      court or agency or supervisory authority having jurisdiction enters a decree
      or
      order for the appointment of a conservator, receiver or liquidator for
      CitiMortgage in any insolvency, readjustment of debt, marshaling of assets
      and
      liabilities or similar proceeding, or for the winding up or liquidation of
      CitiMortgage’s affairs, and the decree or order continues unstayed and in effect
      for 60 consecutive days; or 

    (e) CitiMortgage
      consents to the appointment of a conservator, receiver or liquidator in an
      insolvency, readjustment of debt, marshaling of assets and liabilities,
      or

    

    
      
        
           

        

        
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    similar
      proceeding for CitiMortgage or substantially all of its property, or
      CitiMortgage 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;

    then
      the
      Trustee or the holders of the Required Amount of certificates, by notice in
      writing to CitiMortgage (and to the Trustee if given by the certificate holders)
      may terminate all of CitiMortgage’s rights and obligations as servicer of the
      affiliated mortgage loans and as master servicer of the third-party mortgage
      loans under this agreement. Upon CitiMortgage’s receipt of such notice, all
      CitiMortgage’s authority under this agreement, whether for the certificates or
      the mortgage loans or otherwise, will pass to and be vested in the Trustee
      pursuant to this section 7.1, and the Trustee will be authorized to execute
      and
      deliver, on behalf of CitiMortgage as attorney-in-fact or otherwise, any
      documents and other instruments, and to do or accomplish all other acts or
      things necessary or appropriate to effect the purposes of such notice, whether
      to complete the transfer and endorsement of the mortgage loans and related
      documents or otherwise. CitiMortgage will cooperate with the Trustee in
      effecting the termination of CitiMortgage’s responsibilities and rights
      hereunder, including the transfer to the successor servicer for the
      administration by it of all cash amounts held by CitiMortgage for deposit,
      or
      deposited by CitiMortgage, in the certificate account or servicing account
      or
      subsequently received on the mortgage loans. In addition to any other amounts
      that are then payable, or, notwithstanding the termination of its activities
      as
      servicer and master servicer of the mortgage loans, may become payable to
      CitiMortgage under this agreement, CitiMortgage will be entitled to receive
      out
      of any delinquent interest payment on a mortgage loan, due before such
      termination notice but received afterwards, that portion of the payment that
      it
      would have received if the notice had not been given.

     

    7.2 Trustee
      to act; appointment of successor

    Once
      CitiMortgage receives a notice of termination under section 7.1, the Trustee
      will be the successor in all respects to CitiMortgage in its capacity as
      servicer and master servicer, and will be subject to all CitiMortgage’s rights
      and obligations under this agreement. As compensation, the Trustee will, except
      as provided in section 7.1, be entitled to the same compensation (whether
      payable out of the certificate account or otherwise) as CitiMortgage would
      have
      been entitled to under this agreement if no such notice of termination had
      been
      given. However, the Trustee may, if it is unwilling so to act, or will, if
      it is
      legally unable so to act, appoint, or petition a court of competent jurisdiction
      to appoint, an established housing finance institution with a net worth of
      not
      less than $5 million and approved as seller/servicer by GNMA,
      Fannie
      Mae or Freddie Mac as the successor to CitiMortgage in the assumption of all
      or
      any part of the rights and obligations of CitiMortgage under this agreement.
      Until such a successor is appointed, unless the Trustee is prohibited by law
      from so acting, the Trustee will act in such capacity as provided above. The
      Trustee may make such arrangements for compensation of such successor out of
      payments on the mortgage loans as it and the successor agree; provided,
      however, that no such compensation will exceed CitiMortgage’s compensation under
      this agreement. The

    

    
      
        
           

        

        
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    Trustee
      and the successor will take any actions, consistent with this agreement,
      necessary to effect the succession.

    The
      Trustee will promptly notify the certificate holders and any Insurer of any
      termination of CitiMortgage or appointment of a successor pursuant to this
      section 7.

     

    8 The
      Trustee

     

    8.1 Duties 

    (a)
      Unless the Trustee has notice that an Event of Default is continuing, the
      Trustee will only have those obligations that are specifically set forth in
      this
      agreement, and no implied covenants of the Trustee will be read into this
      agreement.

    (b)
      If
      the Trustee has notice that an Event of Default is continuing, then
      notwithstanding anything to the contrary in this agreement, the Trustee will
      exercise those rights and powers vested in it by this agreement, and use the
      same degree of care and skill in their exercise, as a prudent man would exercise
      under the circumstances in the conduct of his own affairs. If the Trustee is
      incorporated or organized under the laws of the State of New York, then, in
      considering what actions are prudent in the circumstances, the Trustee will
      consider, to the extent applicable, the matters enumerated in Section 126(2)(a)
      through (e) of the New York Real Property Law, as in effect on the date of
      this
      agreement, and will comply with subdivisions (3),(4) and (5) of Section 126
      of
      the New York Real Property Law, as in effect on the date of this
      agreement.

    The
      Trustee will not be charged with notice of an Event of Default (other than
      a
      default in payment to the Trustee) unless a Responsible Officer of the Trustee
      obtains actual knowledge of such failure or receives written notice of such
      Event of Default at its corporate trust office from CitiMortgage or the holders
      of the Required Amount of Certificates.

    (c) The
      Trustee, upon receipt of all resolutions, certifications, statements, opinions,
      reports, documents, orders or other instruments that are specifically required
      or requested to be furnished to the Trustee pursuant to this agreement (each
      a
Furnished
      Document),
      will
      examine them to determine whether they conform to the requirements of this
      agreement. The Trustee may request an officer’s certificate as to any matter of
      fact if the Trustee believes it desirable that the fact be established before
      the Trustee takes an action under this agreement. Unless the Trustee has notice
      that an Event of Default is continuing, the Trustee may conclusively rely,
      without investigation, on the truth of the statements and the correctness of
      the
      opinions expressed in any Furnished Document that the Trustee believes to be
      genuine, signed or presented by the proper parties, and in conformity with
      the
      requirements of this agreement. 

    The
      Trustee will investigate the facts or matters stated in a Furnished Document
      if
      the holders of the Required Amount of Certificates request such investigation
      in
      writing. CitiMortgage will pay, or will reimburse the Trustee upon demand,
      for
      the reasonable expense of such investigation. If the Trustee believes that
      the
      payment within a reasonable time of the costs and liabilities likely to be
      incurred in the investigation are not reasonably assured to it, the Trustee
      may,
      as a condition to conducting such investigation, require reasonable indemnity
      from the certificate holders against such expense or liability. Nothing in
      this
      clause (c) will derogate from CitiMortgage’s obligation to observe any
      applicable law prohibiting disclosure of information regarding the
      mortgagors.

    

    
      
        
           

        

        
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    (d) The
      Trustee will not be required to expend or risk its own funds or otherwise incur
      financial liability in the performance of any of its duties under this
      agreement, or in the exercise of any of its rights or powers, if the Trustee
      reasonably believes that the repayment of such funds or adequate indemnity
      against such risk or liability is not reasonably assured to it.

    (e) Except
      to
      the extent that the Trustee becomes a successor servicer to CitiMortgage under
      sections 4.3 or 7.2, the Trustee will have no responsibility for the performance
      or the manner of performance of any of CitiMortgage’s obligations under this
      agreement. The relationship of CitiMortgage to the Trustee under this agreement
      is intended by the parties to be that of an independent contractor and not
      that
      of a joint venturer, partner or agent.

    (f) The
      Trustee may appoint agents (which may include CitiMortgage and its affiliates)
      to perform any of the Trustee’s obligations under this agreement. Such agents
      will have all of the rights and obligations of the Trustee conferred on them
      by
      such appointment, but the Trustee will continue to be responsible for its
      obligations under this agreement. 

     

    8.2 Liability 

    (a) In
      performing its obligations under this agreement, the Trustee will be liable
      for
      its own negligence or misconduct, except
      that the
      Trustee will not be liable for

    · an
      error
      of judgment by a Responsible Officer of the Trustee, unless the Trustee was
      negligent in ascertaining the pertinent facts;

    · an
      action
      by the Trustee believed by it to be permitted under this agreement;
      and

    · an
      action
      taken in accordance with the direction of the holders of the Required Amount
      of
      certificates relating to the time, method and place of conducting any proceeding
      for any remedy available to the Trustee, or exercising any trust or power
      conferred upon the Trustee, under this agreement.

    (b) The
      Trustee may consult with counsel, and an opinion of counsel will be full and
      complete authorization and protection for any action by the Trustee taken under
      this agreement in accordance with such opinion.

    (c) The
      Trustee will not be responsible for the selection of the Mortgage Document
      Custodian, or any Note Custodian, Paying Agent, Certificate Registrar, or
      Authenticating Agent, nor for their performance of their obligations under
      this
      agreement, the Mortgage Document Custodial Agreement, or any other applicable
      agreement.

     

    8.3 Trustee
      not liable for certificates or mortgage loans

    The
      recitals contained herein and in the certificates (other than the certification
      of authentication on the certificates) will be taken as the statements of
      CitiMortgage, and the Trustee assumes no responsibility for the correctness
      of
      the same. The Trustee makes no representations as to the validity or sufficiency
      of this agreement, the Mortgage Document Custodial Agreement or of the
      certificates (other than the certification of authentication on the
      certificates) or of any mortgage loan or related document. The Trustee will
      not
      be accountable for the use or application by CitiMortgage of any of the
      certificates or of the proceeds of such certificates or for the use or
      application of any funds paid to CitiMortgage in respect of the mortgage loans
      or deposited in or withdrawn from the certificate account or servicing account
      by CitiMortgage. The Trustee will have no liability for any losses incurred
      as a
      result of 

    

    
      
        
           

        

        
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    any
      failure of the Trust Fund to qualify as the specified separate constituent
      REMICs,
      

    · any
      termination, inadvertent or otherwise, of the status of the Trust Fund as the
      specified separate constituent REMICs,
      

    · any
      tax
      on prohibited transactions imposed by Internal Revenue Code Section 860F(a)(1),
      

    · any
      tax
      on net income from foreclosure property imposed by Internal Revenue Code Section
      860G(c), 

    · any
      tax
      on contributions to any constituent REMIC
      after
      the startup day imposed by Internal Revenue Code Section 860G(d), 

    · any
      erroneous calculation or determination or any act or omission of CitiMortgage
      hereunder or 

    · any
      erroneous information included in any federal, state or local income tax or
      information return prepared pursuant to section 3.16; 

    provided,
      that
      the Trustee will not be excused hereby from liability for its own negligence,
      bad faith or failure to perform its duties as specified herein.

     

    8.4 Trustee
      may own certificates

    The
      Trustee in its individual or any other capacity may become the owner or pledgee
      of one or more of the certificates with the same rights as it would have if
      it
      were not Trustee and may otherwise deal with CitiMortgage or any of its
      affiliates as if it were not the Trustee.

     

    8.5 Trustee’s
      fees and expenses

    The
      Trustee’s fees and expenses (and those of any co-trustee appointed pursuant to
      section 8.10), and of any Certificate Registrar, Mortgage Document Custodian,
      Depository, Paying Agent, Authenticating Agent appointed pursuant to section
      8.12, and agent of the Trustee appointed pursuant to section 8.2(g), will
      be
      paid by CitiMortgage, as servicer, in accordance with section 3.9(a). Citibank,
      N.A., as Paying Agent, has agreed to a fee of $3,000 a year. CitiMortgage will
      also pay any expenses associated with the resignation or removal of the Trustee
      and the appointment of a successor Trustee.

    In
      consideration of paying the amounts payable pursuant to this section 8.5,
      CitiMortgage may retain any trustee fee that may be payable on the third-party
      mortgage loans. The Trustee (and any such co-Trustee) will be entitled to
      reasonable compensation (which will not be limited by any provision of law
      with
      respect to the compensation of a trustee of an express trust) for all services
      rendered by them in the execution of the trust or trusts hereby created and
      in
      the exercise and performance of any of the powers and duties hereunder of the
      Trustee, and upon notice to CitiMortgage, the Trustee will be paid or reimbursed
      by CitiMortgage for all reasonable expenses, disbursements and advances incurred
      or made by the Trustee 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 which is the responsibility of the certificate
      holders hereunder.

    The
      Trustee, each Certificate Registrar, each Note Custodian, each Mortgage Document
      Custodian, each Depository, each Paying Agent, each Authenticating Agent and
      any
      agent appointed pursuant to section 8.2 are entitled to indemnification from
      CitiMortgage, as servicer or master servicer, and will be held harmless against
      any loss, liability or expense incurred without negligence or bad faith on
      their
      part, arising out of or in connection with the acceptance or administration
      of
      the trust or

    

    
      
        
           

        

        
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    trusts
      hereunder, including the costs and expenses of defending themselves against
      any
      claim or liability in connection with the exercise or performance of any of
      their powers or duties hereunder. Such indemnification will survive the payment
      of the certificates and termination of the Trust Fund, as well as the
      resignation or removal of CitiMortgage as servicer (if such action which caused
      the need for the indemnification occurred while CitiMortgage acted as servicer),
      and for purposes of such indemnification neither the negligence nor bad faith
      of
      any of the entities enumerated in the preceding sentence, nor of any Note
      Custodian or Mortgage Document Custodian, will be imputed to, or adversely
      affect, the right of any other entity enumerated in the preceding sentence
      to be
      entitled to indemnification.

     

    8.6 Eligibility
      requirements for Trustee

    The
      Trustee hereunder will at all times be a corporation or a national banking
      association, other than an affiliate of CitiMortgage, having its principal
      office in, and organized and doing business under the laws of, the United States
      of America or a state thereof, authorized under such laws to exercise corporate
      trust powers, having a combined capital and surplus of at least $30 million,
      and
      subject to supervision or examination by federal or state authority. If such
      corporation or national banking association 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 8.6,
      the combined capital and surplus of such corporation or national banking
      association will be deemed to be its combined capital and surplus as set forth
      in its most recent report of condition so published. If the Trustee ceases
      to be
      eligible in accordance with the provisions of this section 8.6, the Trustee
      will
      resign immediately in the manner and with the effect specified in section
      8.7.

     

    8.7 Resignation
      or removal of Trustee

    The
      Trustee may resign and be discharged from the trusts hereby created by giving
      written notice thereof to CitiMortgage. Upon receiving such notice of
      resignation, CitiMortgage will promptly appoint a successor Trustee by written
      instrument, in duplicate, one copy of which instrument will be delivered to
      the
      resigning Trustee and one copy to the successor Trustee. If no successor Trustee
      will have been so appointed and having accepted appointment within 30 days
      after
      the giving of such notice of resignation, the resigning Trustee may petition
      any
      court of competent jurisdiction for the appointment of a successor
      Trustee.

    If
      the
      Trustee ceases to be eligible in accordance with the provisions of section
      8.6
      and will fail to resign after written request therefor by CitiMortgage, or
      if
      the Trustee is legally unable to act, or is adjudged a bankrupt or insolvent,
      or
      a receiver of the Trustee or of its property is appointed, or any public officer
      takes charge or control of the Trustee or of its property or affairs for the
      purpose of rehabilitation, conversion or liquidation, then CitiMortgage may
      remove the Trustee. If it removes the Trustee under the authority of the
      immediately preceding sentence, CitiMortgage will promptly appoint a successor
      Trustee by written instrument, in duplicate, one copy of which instrument will
      be delivered to the Trustee so removed and one copy to the successor
      Trustee.

    The
      Trustee may also be removed (i) by CitiMortgage, (a) if the Trustee ceases
      to be
      eligible to continue as such under this

    

    
      
        
           

        

        
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    agreement
      or if the Trustee becomes insolvent, (b) if the Trustee breaches any of its
      duties under this agreement which materially adversely affects the certificate
      holders, (c) if through the performance or nonperformance of certain actions
      by
      the Trustee, the rating assigned to the certificates would be lowered or (d)
      if
      the credit rating of the Trustee is downgraded to a level which would result
      in
      the rating assigned to the certificates to be lowered; or (ii) by the holders
      of
      certificates evidencing more than 50% of the voting interest of the certificates
      then outstanding and more than 50% of the percentage interests of the residual
      certificates.

    Any
      resignation or removal of the Trustee and appointment of a successor Trustee
      pursuant to any of the provisions of this section 8.7 will not become effective
      until acceptance of appointment by the successor Trustee as provided in section
      8.8.

     

    8.8 Successor
      trustee

    Any
      successor Trustee appointed as provided in section 8.7 will execute, acknowledge
      and deliver to CitiMortgage and to its predecessor Trustee an instrument
      accepting such appointment hereunder, and thereupon the resignation or removal
      of the predecessor Trustee will become effective and such successor Trustee,
      without any further act, deed or conveyance, will become fully vested with
      all
      the rights, powers, duties and obligations of its predecessor hereunder with
      like effect as if originally named as Trustee. The predecessor Trustee will
      deliver to the successor Trustee all mortgage files and related documents and
      statements held by it hereunder; and, if any mortgage notes or mortgage
      documents are then held by the Mortgage Note Custodian or Mortgage Document
      Custodian, respectively, pursuant to a Mortgage Document Custodial Agreement,
      the predecessor Trustee and the Mortgage Note Custodian or the Mortgage Document
      Custodian, as the case may be, will amend such Mortgage Document Custodial
      Agreement to make the successor Trustee the successor to the predecessor Trustee
      thereunder; and CitiMortgage and the predecessor Trustee will execute and
      deliver such instruments and do other such things as may reasonably be required
      for fully and certainly vesting and confirming in the successor Trustee all
      such
      rights, powers, duties and obligations.

    No
      successor Trustee will accept appointment as provided in this section 8.8 unless
      at the time of such acceptance such successor Trustee will be eligible under
      the
      provisions of section 8.6.

    Upon
      acceptance of appointment by a successor Trustee as provided in this section
      8.8, CitiMortgage will mail notice of the succession of such Trustee hereunder
      to all holders of certificates at their addresses as shown in the Certificate
      Register, and to any Insurer. If CitiMortgage fails to mail such notice within
      10 days after acceptance of appointment by the successor Trustee, the successor
      Trustee will cause such notice to be mailed at the expense of
      CitiMortgage.

     

    8.9 Merger
      or consolidation of Trustee

    Any
      corporation or national banking association into which the Trustee may be merged
      or converted or with which it may be consolidated, or any corporation or
      national banking association resulting from any merger, conversion or
      consolidation to which the Trustee will be a party, or any corporation or
      national banking association succeeding to all or substantially all of the
      corporate trust business of the Trustee, will be the successor of the Trustee
      hereunder, provided such corporation or national banking association will be
      eligible under

    

    
      
        
           

        

        
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    the
      provisions of section 8.6, 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.

     

    8.10 Appointment
      of co-trustee or separate trustee

    Notwithstanding
      any other provisions of this agreement, for the purpose of meeting any legal
      requirements of any jurisdiction in which any part of the Trust Fund or property
      securing any mortgage note may at the time be located, CitiMortgage and the
      Trustee acting jointly will have the power and will execute and deliver all
      instruments to appoint one or more persons approved by the Trustee 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 Fund, and to vest in such
      person or persons, in such capacity and for the benefit of the certificate
      holders and any Insurer, such title to the Trust Fund, or any part thereof,
      and,
      subject to the other provisions of this section 8.10, such powers, duties,
      obligations, rights and trusts as CitiMortgage and the Trustee may consider
      necessary and desirable. If CitiMortgage will not have joined in such
      appointment within 15 days after the receipt by it of a request so to do, or
      in
      the case an Event of Default will have occurred and be continuing, the Trustee
      alone will have the power to make such appointment. No co-trustee or separate
      trustee hereunder will be required to meet the terms of eligibility as a
      successor trustee under section 8.6 and no notice to the certificate holders
      of
      the appointment of any co-trustee or separate trustee will be required under
      section 8.8.

    Every
      separate trustee and co-trustee will, to the extent permitted by law and by
      the
      instrument appointing such separate trustee or co-trustee, be appointed and
      act
      subject to the following provisions and conditions:

    (a) All
      rights, powers, duties and obligations conferred or imposed upon the Trustee
      will be conferred or imposed upon and exercised or performed by the Trustee
      and
      such separate trustee or co-trustee jointly (it being understood that such
      separate trustee or co-trustee is not authorized to act separately without
      the
      Trustee joining such act), 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 CitiMortgage hereunder), the Trustee will
      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 Fund or any portion thereof in any such jurisdiction) will be exercised
      and performed singly by such separate trustee or co-trustee, but solely at
      the
      direction of the Trustee;

    (b) No
      trustee hereunder will be held personally liable by reason of any act or
      omission of any other trustee hereunder; and

    (c) CitiMortgage
      and the Trustee acting jointly may accept the resignation of or remove any
      separate trustee or co-trustee.

    Any
      notice, request or other writing given to the Trustee will 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 will refer to this agreement and the conditions of this section
      8.
      Each separate trustee and co-trustee, upon its acceptance of the trusts
      conferred, will 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 of the

    

    
      
        
           

        

        
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    provisions
      of this agreement relating to the conduct of, affecting the liability of, or
      affording protection to, the Trustee. Every such instrument will be filed with
      the Trustee and a copy thereof given to CitiMortgage.

    Any
      separate trustee or co-trustee may constitute the Trustee, its agent or
      attorney-in-fact, with full power and authority, to the extent not prohibited
      by
      law, to do any lawful act under or in respect of this agreement on its behalf
      and in its name. If any separate trustee or co-trustee will die, become
      incapable of acting, resign or be removed, all of its estates, properties,
      rights, remedies and trusts will vest in and be exercised by the Trustee to
      the
      extent permitted by law, without the appointment of a new or successor
      trustee.

     

    8.11 Tax
      returns

    The
      Trustee, upon request, will furnish CitiMortgage with all such information
      as
      may be reasonably required in connection with the preparation of all federal,
      state and local income tax or information returns of each constituent
REMIC.
      The
      Trustee will sign the federal and, if applicable, state and local income tax
      returns of each constituent REMIC.

     

    8.12 Appointment
      of authenticating agent

    As
      long
      as any of the certificates remain outstanding the Trustee may appoint an
      Authenticating Agent or Agents (which may include CitiMortgage or any of its
      affiliates) which will be authorized to act on behalf of the Trustee to
      authenticate certificates, and certificates so authenticated will be entitled
      to
      the benefit of this agreement and will be valid and obligatory for all purposes
      as if authenticated by the Trustee hereunder. Wherever reference made in this
      agreement to the authentication and delivery of certificates by the Trustee
      or
      the Trustee’s certification of authentication, such reference will be deemed to
      include authentication and delivery on behalf of the Trustee by an
      Authenticating Agent and a certification of authentication executed on behalf
      of
      the Trustee by an Authenticating Agent. Each Authenticating Agent will be
      acceptable to CitiMortgage and will at all times be a corporation or national
      banking association organized and doing business under the laws of the United
      States of America, any state thereof or the District of Columbia, authorized
      under such laws to act as Authenticating Agent, having a combined capital and
      surplus of not less than $15 million, authorized under such laws to conduct
      a
      trust business and subject to supervision or examination by federal or state
      authority. If such Authenticating Agent publishes reports of condition at least
      annually, pursuant to law or to the requirements of said supervising or
      examining authority, then for the purposes of this section 8.12, the combined
      capital and surplus of such Authenticating Agent will be deemed to be its
      combined capital and surplus as set forth in its most recent report of condition
      so published. If an Authenticating Agent ceases to be eligible in accordance
      with the provisions of this section 8.12, such Authenticating Agent will resign
      immediately in the manner and with the effect specified in this section
      8.12.

    Any
      corporation or national banking association into which an authenticating Agent
      may be merged in or converted or with which it may be consolidated, or any
      corporation or national banking association resulting from any merger,
      conversion or consolidation to which such Authenticating Agent will be a party,
      or any corporation or national banking association succeeding to the corporate
      agency or corporate trust business of an Authenticating Agent, will

    

    
      
        
           

        

        
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    continue
      to be an Authenticating Agent, provided such corporation or national banking
      association will be otherwise eligible under this section 8.12, without the
      execution or filing of any paper or any further act on the part of the Trustee
      or the Authenticating Agent.

    An
      Authenticating Agent may resign by giving written notice thereof to the Trustee
      and to CitiMortgage. The Trustee may terminate the agency of an Authenticating
      Agent by giving written notice thereof to such Authenticating Agent and to
      CitiMortgage. Upon receiving such a notice of resignation or upon such a
      termination, or if the Authenticating Agent ceases to be eligible in accordance
      with the provisions of this section 8.12, the Trustee may appoint a successor
      acceptable to CitiMortgage and will mail written notice of such appointment
      by
      first-class mail, postage prepaid to all certificate holders as their names
      and
      addresses appear in the Certificate Register, and to any Insurer. Any successor
      Authenticating Agent upon acceptance of its appointment hereunder will become
      vested with all the rights, powers and duties of its predecessor hereunder,
      with
      like effect as if originally named as an Authenticating Agent herein. No
      successor Authenticating Agent will be appointed unless eligible under the
      provisions of this section 8.12.

    Any
      reasonable compensation paid to an Authenticating Agent for its services under
      this section 8.12 will be a reimbursable expense pursuant to section 8.5 if
      paid
      by the Trustee.

    If
      an
      appointment is made pursuant to this section 8.12, the certificates may have
      endorsed thereon, in addition to the Trustee’s certification of authentication,
      an alternate certification of authentication in the following form:

    “This
      is
      one of the certificates referred to in the within-mentioned
      Agreement.

    _______________

    As
      Trustee

    

    By_______________________

    Authenticating
      Agent

    

    By_______________________

    Authenticating
      Signature”

     

    9 Termination

     

    9.1 Termination
      upon repurchase by CMSI
      or liquidation of all mortgage loans

    The
      obligations and responsibilities of CMSI,
      CitiMortgage
      and the Trustee under, and the Trust Fund created by, this agreement will
      terminate upon 

    (a) the
      repurchase by CMSI
      of all
      of the mortgage loans and all property acquired in respect of any mortgage
      loan
      remaining in the Trust Fund, or 

    (b)
      the
      later of (i) the maturity or other liquidation (or any advance with respect
      thereto) of the last mortgage loan remaining in the Trust Fund and the
      disposition of all property acquired upon foreclosure or by deed in lieu of
      foreclosure of any mortgage loan and (ii) the payment to the certificate holders
      and to the Insurer, as subrogee of any insured class certificates, of all
      amounts required to be paid to them pursuant to this agreement; 

    provided,
      however, that in no event will the trust created hereby continue beyond the
      expiration of 21 years from the death of the last survivor of the lawful
      descendants of Joseph P. Kennedy, the late Ambassador of the United States
      of
      America to the Court of St. James’s, living on the date of this agreement.

    CMSI’s
      right
      to repurchase all of the mortgage loans on any distribution day

    

    
      
        
           

        

        
          101

          
            

          

        

        
           

        

      

    

    

    pursuant
      to clause (a) above will be conditioned upon 

    · the
      aggregate scheduled principal balances of such mortgage loans, at the time
      of
      any such repurchase and after giving effect to distributions to be made on
      such
      distribution day, aggregating an amount less than 10% of the aggregate scheduled
      principal balance of the mortgage loans as of the closing date, which amount
      is
      set forth in the Series Terms and 

    · any
      other
      condition set forth in the Series Terms. 

    The
      repurchase of the mortgage loans and other property under clause (a) above
      will
      be at a price equal to the sum of 

    · 100%
      of
      the unpaid principal balance of each mortgage loan on the first day of the
      month
      of repurchase (after giving effect to payments of principal due on such first
      day) plus accrued interest at the pass-through rate for each mortgage loan
      to
      but not including the first day of the month in the month in which the related
      distribution is made to certificate holders, after the deduction of (x)
      unreimbursed voluntary advances, affiliated Paying Agent advances, third-party
      Paying Agent advances, and advance account advances (other than such payments
      and advances in respect of interest in excess of the pass-through rate on the
      mortgage loans) made prior to the month of repurchase, whereupon such voluntary
      advances, affiliated Paying Agent advances, third-party Paying Agent advances
      and advance account advances will be reimbursed to the Paying Agent or deemed
      reimbursed to CitiMortgage, as the case may be, by such deductions, and (y)
      the
      aggregate amount of any non-supported prepayment interest shortfalls for the
      distribution day in the month of such repurchase, and 

    · the
      appraised value of any acquired property in the Trust Fund (less the good faith
      estimate of CitiMortgage of liquidation expenses to be incurred in connection
      with its disposal thereof), such appraisal to be conducted by an appraiser
      mutually agreed upon by CitiMortgage and the Trustee.

    Notwithstanding
      anything to the contrary in this section 9.1, if the purchase price of the
      mortgage loans under clause (a) above would be less than the aggregate fair
      market value of the mortgage loans on the first day of the month of repurchase
      (after giving effect to payments of principal due on such first day), then
      CMSI
      may so
      repurchase the mortgage loans only if the repurchase would be permitted under
      then-applicable risk-based capital rules applicable to securitizations treated
      as sales.

    Any
      method of termination or repurchase of the Trust Fund other than as provided
      in
      clauses (a) or (b) above must be based on the receipt by the Trustee of an
      opinion of counsel (who may not be an employee of CMSI
      or of an
      affiliate of CMSI)
      or
      other evidence that such termination and repurchase will be part of a “qualified
      liquidation” within the meaning of Internal Revenue Code Section 860F(a)(4)(A),
      will not adversely affect the status of the Trust Fund as separate constituent
      REMICs
      under
      the Internal Revenue Code and will not otherwise subject the Trust Fund to
      any
      tax. CMSI
      may
      transfer its right to repurchase all of the mortgage loans pursuant to clause
      (a) above to any third party of choice.

    Such
      termination will occur only in connection with a “qualified liquidation” of each
      constituent REMIC
      within
      the meaning of Internal Revenue Code Section 860F(a)(4)(A), pursuant to which
      the Trustee will sell or otherwise dispose of all of the remaining assets of
      the
      Trust Fund and make all required distributions to certificate holders within
      90
      days of the adoption of a plan of complete liquidation. For this purpose, the
      notice of termination

    

    
      
        
           

        

        
          102

          
            

          

        

        
           

        

      

    

    

    described
      in the next paragraph will be the adoption of a plan of complete liquidation
      described in Internal Revenue Code Section 860F-(a)(4)-(A)(i), which will be
      deemed to occur on the date the first such notice is mailed. Such date will
      be
      specified in the final federal income tax return of each constituent
REMIC
      constituted by the Trust Fund. 

    Notice
      of
      a termination, specifying the distribution day upon which the certificate
      holders may surrender their certificates to the Paying Agent for payment of
      the
      final distribution and cancellation, will be given promptly by the Trustee
      by
      letter to the certificate holders mailed not earlier than 30 days nor more
      than
      60 days prior to such distribution day specifying 

    
      	
              ·

            	
              the
                distribution day upon which final payment of the certificates will
                be made
                upon presentation and surrender of the certificates at the office
                of the
                Paying Agent designated in the notice,

            

    

    
      	
              ·

            	
              the
                amount of the final distribution, and

            

    

    
      	
              ·

            	
              that
                the record date otherwise applicable to such distribution day will
                not
                apply, and that distributions will be made only upon presentation
                and
                surrender of the certificates at the designated office of the Paying
                Agent. 

            

    

    CMSI
      will
      give such notice to the Trustee and, if applicable, the Certificate Registrar,
      the Mortgage Document Custodian and the Paying Agent at the time the notice
      is
      given to the certificate holders. 

    If
      such
      notice is given, CMSI
      will
      deposit in the certificate account or the account designated by the Paying
      Agent, on the business day preceding the distribution day for the final
      distribution, an amount equal to the final distribution on the certificates.
      Upon certification to the Trustee by an Authorized Officer of CMSI
      following such final deposit, and delivery by CMSI
      of an
      opinion of counsel to the effect that all conditions set forth in this section
      9.1 have been met, the Trustee will promptly release to CMSI
      the
      mortgage files for the mortgage loans. 

    If
      all of
      the certificate holders do not surrender their certificates for cancellation
      within six months after the date specified in the notice, the Trustee will
      give
      a second written notice to the remaining certificate holders to surrender their
      certificates for cancellation and receive the final distribution. If all the
      certificates have not been surrendered for cancellation within one year after
      the second notice, the Trustee may take appropriate steps to contact the
      remaining certificate holders concerning surrender of their certificates, and
      the cost thereof will be paid out of the funds and other assets which remain
      subject hereto. Interest will not accrue for the period of any delay in the
      payment of a certificate resulting from the failure of a holder to surrender
      the
      certificate in accordance with the notice.

     

    10 General
      provisions

     

    10.1 Amendments

    This
      Agreement may be amended by the parties, without the consent of any of the
      certificate holders, 

    · to
      cure
      an ambiguity or inconsistency, or to correct a mistake, 

    · to
      add
      provisions not inconsistent with this agreement, 

    · to
      comply
      with any requirements imposed by the Internal Revenue Code, 

    · to
      establish a “qualified reserve fund” within the meaning of Internal Revenue Code
      Section 860G(a)(7)(B), or 

    · to
      maintain the status of the Trust Fund as separate constituent REMICs.
      

    This
      Agreement may also be amended by the parties, without certificate holder
      consent, if CMSI
      or
      CitiMortgage delivers

    

    
      
        
           

        

        
          103

          
            

          

        

        
           

        

      

    

    

    an
      opinion of counsel acceptable to the Trustee and the Insurer to the effect
      that
      the amendment will not materially adversely affect the interests of the
      certificate holders or the Insurer. 

    The
      Trustee will execute and deliver any amendment to this agreement provided by
      CMSI
      or
      CitiMortgage that conforms to the preceding two paragraphs, but the Trustee
      need
      not enter into any such amendment that affects the Trustee’s own rights, duties
      or immunities under this agreement or otherwise.

    This
      Agreement may also be amended by the parties to add, change or eliminate
      provisions of this agreement, or to modify the rights of certificate holders;
      with the consent of 

    1 the
      holders of 2/3 of the certificates,

    2 if
      a
      class of certificates is affected materially and adversely by the amendment
      in a
      way that is different from the other affected classes, 2/3 of the certificates
      of the differently affected class, and

    3 the
      Insurer if the Insurer is materially and adversely affected by the
      amendment.

    Approval
      shall be by percentage interest for residual certificates and by principal
      balance for all other certificates.

    In
      connection with any such amendment, CMSI
      or
      CitiMortgage will deliver an opinion of counsel acceptable to the Trustee (x)
      identifying any class of certificates that may be affected materially and
      adversely by the amendment in a way that is different from the other affected
      classes (or stating that there is no such differently affected class) and (y)
      identifying any class whose certificate holders would not be materially
      adversely affected by such amendment.

    Notwithstanding
      the foregoing, no amendment will, without the consent of the holders of all
      the
      outstanding certificates 

    · reduce
      or
      delay collections or payments received on mortgage loans or distributions to
      be
      made on any certificate, or 

    · 
      reduce
      the proportion required to consent to any such amendment. 

    Certificate
      holders may consent to an amendment by approving the substance of the amendment
      rather than the particular form of the proposed amendment. The Trustee may
      prescribe reasonable requirements for the manner of obtaining and evidencing
      such consents. Any proposed amendment is subject to the receipt by the Trustee
      of a legal opinion, at the expense of the party proposing the amendment (or
      at
      the expense of the Trust Fund if proposed by the Trustee), that the amendment
      will not cause any constituent REMIC
      to fail
      to qualify as a REMIC
      or
      subject any constituent REMIC
      to
      tax.

    Promptly
      after the execution of any such amendment or such consent, the Trustee will
      notify each certificate holder of the substance of the amendment or provide
      the
      holder with a copy of the amendment.

     

    10.2 Recordation
      of Agreement

    Any
      manually signed copy of this agreement may be recorded in any appropriate public
      office for real property records in a county or other jurisdiction where
      mortgaged properties are located, or any other appropriate public recording
      office. CitiMortgage will effect such recordation at its expense upon the
      Trustee’s request, acting at the direction of the holders of a majority by
      percentage interest of the residual certificates. The request must be
      accompanied by a legal opinion to the effect that the recording will materially
      and beneficially affect the interests of the certificate holders. 

     

     

    

    
      
        
           

        

        
          104

          
            

          

        

        
           

        

      

    

    

     

    10.3
      Limitation on rights of certificate holders

    A
      certificate holder’s death or incapacity will not terminate this agreement or
      the Trust Fund, nor entitle the certificate holder’s legal representatives or
      heirs to claim an accounting or to take an action or commence a proceeding
      in
      any court for a partition or winding up of the Trust Fund, nor otherwise affect
      the rights, obligations and liabilities of any party to this agreement.

    No
      certificate holder may vote (except as provided in section 10.1) or otherwise
      control the operation and management of the Trust Fund or the obligations of
      the
      parties, nor will anything in this agreement or the certificates be construed
      to
      constitute the certificate holders as partners (except to the extent provided
      in
      Internal Revenue Code Section 860F(e) for holders of residual certificates)
      or
      members of an association; nor will a certificate holder be liable to any third
      person for any action taken by the parties to this agreement pursuant to its
      provisions.

    A
      certificate holder may not institute any suit, action or proceeding with respect
      to this agreement, unless 

    · the
      holder has notified the Trustee of the continuance of an Event of Default,
      

    · the
      holders of the Required Amount of certificates have requested the Trustee to
      institute such action, suit or proceeding in its own name as Trustee, and have
      offered the Trustee such reasonable indemnity as it requires against the costs,
      expenses and liabilities to be incurred, and 

    · the
      Trustee, for 60 days after its receipt of the notice, request and offer of
      indemnity, fails to institute any the action, suit or proceeding.

    Each
      certificate holder understands, and agrees with every other certificate holder
      and the Trustee, that no certificate holders may under this agreement affect,
      disturb or prejudice the rights of any other certificate holders, or obtain
      priority over or preference to any such other holders, or enforce any right
      under this agreement, except as provided in this agreement, and for the equal,
      ratable and common benefit of all certificate holders. For the protection and
      enforcement of the provisions of this section 10.3, each certificate holder
      and
      the Trustee may seek such relief as can be given either at law or in
      equity.

     

    10.4 Governing
      law

    This
      Agreement and the certificates will be governed by the laws of the State of
      New
      York, except that the immunities and standards of care of the Trustee will
      be
      governed by the law of the jurisdiction in which its corporate trust office
      is
      located.

     

    10.5 Maintenance
      of REMICs

    The
      execution and delivery of this agreement will constitute an acknowledgment
      by
      each of CMSI
      and
      CitiMortgage on behalf of the certificate holders that it intends hereby to
      establish and maintain (for federal income tax purposes) one or more “real
      estate mortgage investment conduits” within the meaning of Internal Revenue Code
      Section 860D, and CMSI
      and
      CitiMortgage are hereby granted all necessary powers to further such
      intent.

     

    10.6 Notices

    Except
      as
      otherwise stated in this agreement, all communications relating to this
      agreement including all demands and notices will be in writing and will be
      deemed to have been duly given if personally delivered at or mailed by first
      class mail, to a party at the address for notices set forth in the Series Terms
      or at such other address as the party designates

    

    
      
        
           

        

        
          105

          
            

          

        

        
           

        

      

    

    

    in
      a
      written notice to each other party. Any notice required or permitted to be
      mailed to a certificate holder will be given by first class mail, postage
      prepaid, at the holder’s address shown in the Certificate Register. Any notice
      so mailed within the time prescribed in this agreement will be conclusively
      presumed to have been duly given, whether or not the certificate holder receives
      the notice. Notices to the Trustee will be effective only upon receipt.

     

    10.7 Severability
      of provisions

    If
      a
      provision of this agreement is held invalid, then such provisions will be deemed
      severable from the remaining provisions of this agreement and will in no way
      affect the validity or enforceability of the other provisions, or of the
      certificates or the rights of their holders.

     

    10.8 Assignment

    Notwithstanding
      anything to the contrary in this agreement, except as provided in sections
      4.2,
      4.3 and 4.5, CMSI
      or
      CitiMortgage may not assign this agreement without the prior consent of the
      Trustee and the holders of 2/3 of the outstanding certificates and 2/3 of the
      percentage interests of the outstanding residual certificates.

     

    10.9 Certificates
      nonassessable and fully paid

    It
      is the
      intention of the Trustee that the certificate holders will not be personally
      liable for obligations of the Trust Fund, that the interests represented by
      the
      certificates will be nonassessable for any losses or expenses of the Trust
      Fund
      or for any reason whatsoever, and that the certificates upon authentication
      thereof by the Trustee pursuant to section 2.5 are and will be deemed fully
      paid.

     

    11 Depositories

     

    11.1 Depositories

    CitiMortgage
      may transfer the certificate account, buydown account, if any, escrow account,
      custodial accounts for P&I or servicing account to a bank, savings and loan
      association or trust company organized under the laws of the United States
      or
      any State thereof (an “eligible depository”). Upon such transfer, such
      transferee bank, savings and loan association or trust company will be deemed
      to
      be a Depository for the transferred account or accounts. 

    For
      a
      Depository of the certificate account, buydown account, escrow account,
      custodial accounts for P&I or servicing account to satisfy the “rating
      requirement” 

    · its
      long-term debt obligations must be rated at least “A” by Fitch if Fitch is a
      rating agency, and 

    · its
      short-term debt obligations are rated at least “A-1+” by S&P if S&P is a
      rating agency, “F-1” by Fitch if Fitch is a rating agency, and “P-1” by Moody’s
      if Moody’s is a rating agency. 

    If
      a
      Depository ceases to satisfy the rating requirement, then within five business
      days after such cessation, CitiMortgage will 

    (A)
      transfer or direct the Trustee to transfer the certificate account, buydown
      account, escrow account, custodial accounts for P&I or servicing account to
      an eligible depository that satisfies the rating requirements, 

    (B)
      establish another account in the corporate trust department of the Trustee
      or if
      such Trustee satisfies the rating requirements, in any department of the Trustee
      (the “alternative certificate account,” “alternative buydown account,”
“alternative escrow account,” “alternative custodial accounts for P&I,” or
“alternative servicing account,” as the case may be) and transfer the funds from
      the buydown

    

    
      
        
           

        

        
          106

          
            

          

        

        
           

        

      

    

    

    account
      to the alternative buydown account, direct CitiMortgage or a third-party
      servicer, as applicable, to remit in accordance with this agreement any funds
      deposited into the servicing account, escrow account or custodial accounts
      for
      P&I to the alternative servicing account, alternative escrow account or
      alternative custodial account for P&I, respectively, and direct CitiMortgage
      to remit in accordance with this agreement any funds deposited into the
      certificate account to the alternative certificate account, 

    (C)
      (i)
      cause the Depository to pledge securities in the manner provided by applicable
      law or (ii) pledge or cause to be pledged securities, which will be held by
      the
      Trustee or its agent free and clear of the lien of any third party, in a manner
      conferring on the Trustee a perfected first lien and otherwise reasonably
      satisfactory to the Trustee; such pledge in either case to secure the
      Depository’s performance of its obligations in respect of the certificate
      account, buydown account, escrow account, custodial accounts for P&I or
      servicing account to the extent, if any, that such obligation is not fully
      insured by the FDIC;
      provided,
      however,
      that
      prior to the day a Depository or CitiMortgage, as the case may be, pledges
      securities pursuant to this subsection (C), CitiMortgage, any Insurer and the
      Trustee have received the written assurance of each rating agency that the
      pledging of such securities and any arrangements or agreements relating thereto
      will not result in a reduction or withdrawal of the then-current rating of
      the
      certificates (for any insured class certificates, without reference to any
      certificate insurance policy), 

    (D)
      establish an account or accounts or enter into an agreement so that the existing
      certificate account, buydown account, escrow account, custodial accounts for
      P&I or servicing account is supported by a letter of credit or some other
      form of credit support, which issuer of such letter of credit or other form
      of
      credit support has a long-term and short-term debt rating at least equal to
      the
      rating requirements; provided,
      however,
      that
      prior to the establishment of such an account or the entering into of such
      an
      agreement, CitiMortgage, any Insurer and the Trustee receive written assurance
      from each rating agency that the establishment of such an account or the
      entering into of such an agreement so that the existing certificate account,
      buydown account or servicing account is supported by a letter of credit or
      some
      other form of credit support will not result in a reduction or withdrawal of
      the
      then-current rating on the certificates (for an insured class certificates,
      without reference to a certificate insurance policy), 

    (E)
      establish another account which constitutes an Eligible Account, or

    (F)
      make
      such other arrangements as to which CitiMortgage, any Insurer and the Trustee
      have received prior written assurance from each rating agency that such
      arrangement will not result in a reduction or withdrawal of the then-current
      rating on the certificates. 

    If
      the
      rating on the certificates has been downgraded as a result of a rating downgrade
      of the Depository, for purposes of this paragraph, the then-current rating
      on
      the certificates will be the rating assigned to the certificates prior to any
      such downgrade (for any insured class certificates, without reference to any
      certificate insurance policy).

    

    

     

    

    
      
        
           

        

        
          107

          
            

          

        

        
           

        

      

    

    

     

    SIGNATURES
      AND ACKNOWLEDGMENTS

    

    Citicorp
      Mortgage Securities, Inc.

    

    

    

    By:      /s/
      Daniel
      P.
      Hoffman

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

    Daniel
      P.
      Hoffman

    President

    

    

    

    

    State
      of
      Missouri    )

             
        )
      ss.:

    County
      of
      St. Charles    )

     

    On
      the
      26th day of September 2006 before me, a notary public in and for the State
      of
      Missouri, personally appeared Daniel P. Hoffman, known to me who, being by
      me
      duly sworn, did depose and say that he is President of Citicorp Mortgage
      Securities, Inc., one of the parties that executed the foregoing instrument;
      and
      that he signed his name thereto by authority of the Board of Directors of said
      corporation.

    

    

    

    /s/
      Michele E. Hines

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

    Notary
      Public

    

    

    [Notarial
      Seal]

    

    
      
        
           

        

        
           

          
            

          

        

        
           

        

      

    

    

    CitiMortgage,
      Inc.

    

    

    

    By:   
      /s/  Frank
      Meyers

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

    Frank
      Meyers

    Vice
      President

    

    

    

    
      State
        of
        Missouri    )

               
        )
        ss.:

      County
        of
        St. Charles    )

       

    

    On
      the
      26th day of September 2006 before me, a notary public in and for the State
      of
      Missouri, personally appeared Frank Meyers, known to me who, being by me duly
      sworn, did depose and say that he is Vice President of CitiMortgage, Inc.,
      one
      of the parties that executed the foregoing instrument; and that he signed his
      name thereto by authority of the Board of Directors of said
      corporation.

    

    

    

    /s/
      Michele E. Hines

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

    Notary
      Public

    

    

    [Notarial
      Seal]

    

    
      
        
           

        

        
           

          
            

          

        

        
           

        

      

    

    

    U.S.
      Bank National Association,

    in
      its
      individual capacity and as Trustee

    

    

    

    By:
       /s/
      Claire M. O’Brien

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

    Claire
      M.
      O’Brien

    Vice
      President

    

    

    

    Commonwealth
      of Massachusetts   )

                                                                  
      ) ss.:

    County
      of
      Suffolk                               )

     

    On
      the
      25th day of September 2006 before me, a notary public in and for the
      Commonwealth of Massachusetts, personally appeared Claire M. O’Brien known to me
      who, being by me duly sworn, did depose and say that he/she is Vice President
      of
      U.S. Bank National Association, a national banking association, one of the
      parties that executed the foregoing instrument; and that he/she signed his/her
      name thereto by authority of the Board of Directors of said bank.

    

    

    

    /s/
      Larry
      D. Snell

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

    Notary
      Public

    

    

    [Notarial
      Seal]

    

    
      
        
           

        

        
           

          
            

          

        

        
           

        

      

    

    

    Citibank,
      N.A.,

    in
      its
      individual capacity and as Paying Agent, Certificate Registrar and
      Authenticating Agent

    

    

    

    By: /s/
      Nancy
      Forte

         
      ____________________

    Nancy
      Forte

                   
      Assistant
      Vice President

    

    

    

    State
      of
      New York       )

                                          
      )
      ss.:

    County
      of
      New York   )

     

    On
      the
      28th day of September 2006 before me, a notary public in and for the State
      of
      New York, personally appeared nancy Forte known to me who, being by me duly
      sworn, did depose and say that he/she is Assistant Vice President of Citibank,
      N.A., a national banking association, one of the parties that executed the
      foregoing instrument; and that he/she signed his/her name thereto by authority
      of the Board of Directors of said bank.

    

    

    

    /s/
      Christopher R. Becker

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

    Notary
      Public

    

    

    [Notarial
      Seal]

    

    
 

    
      
         

      

      
         

        
          

        

      

      
         

      

    

    SCHEDULE
      1

     

    

    SERVICING
      CRITERIA TO BE ADDRESSED IN REPORT ON ASSESSMENT OF
      COMPLIANCE

    

    

    
      	
              Regulation
                AB reference

               

            	
               

               

              Servicing
                criteria

               

            	
              Responsible
                person(s)

               

            
	 	
               

              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.

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              1122(d)(1)(iii)

               

            	
              Any
                requirements in the transaction agreements to maintain a back-up
                servicer
                for the Pool Assets are maintained. 

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	 	
               

              Cash
                collection and administration

               

            	 
	
              1122(d)(2)(i)

               

            	
              Payments
                on pool assets 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. 

               

            	
              CitiMortgage

               

            
	
              1122(d)(2)(ii)

               

            	
              Disbursements
                made via wire transfer on behalf of an obligor or to an investor
                are made
                only by authorized personnel. 

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            
	
              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.
                

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            
	
              1122(d)(2)(iv)

               

            	
              The
                related accounts for the transaction, such as cash 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. 

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            

    

    

    Schedule
      1-1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              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.
                

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            
	
              1122(d)(2)(vi)

               

            	
              Unissued
                checks are safeguarded so as to prevent unauthorized access. 

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            
	
              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. 

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            
	 	
               

              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 Pool Assets serviced by the Servicer.

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            
	
              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.

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            
	
              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.
                

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            

    

    

    Schedule
      1-2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	 	
               

              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. 

               

            	
              CitiMortgage

               

              Citibank
                (West), FSB

               

            
	
              1122(d)(4)(ii)

               

            	
              Pool
                assets and related documents are safeguarded as required by the
                transaction agreements 

               

            	
              Citibank
                (West), FSB

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              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.
                

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              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).
                

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            

    

    

    Schedule
      1-3

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              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. 

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

            
	
              1122(d)(4)(xiv)
                

               

            	
              Delinquencies,
                charge-offs and uncollectible accounts are recognized and recorded
                in
                accordance with the transaction agreements. 

               

            	
              CitiMortgage

               

            
	
              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. 

               

            	
              CitiMortgage

               

              Citibank,
                N.A.

               

            

    

    

    

    

    

    

    

    

    

    

    

    

    

    Schedule
      1-4

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    PAC
      SCHEDULE

     

    
      	
              Distribution
                day in

            	
              Classes
                IA-2 through IA-4

              and
                IA-8 through IA-10

              aggregate
                planned balance

            
	
              Initial

            	
              $156,437,904.00

            
	
              October
                2006

            	
              156,074,858.26

            
	
              November
                2006

            	
              155,647,610.81

            
	
              December
                2006

            	
              155,156,271.90

            
	
              January
                2007

            	
              154,600,992.76

            
	
              February
                2007

            	
              153,981,965.58

            
	
              March
                2007

            	
              153,299,423.49

            
	
              April
                2007

            	
              152,553,640.49

            
	
              May
                2007

            	
              151,744,931.36

            
	
              June
                2007

            	
              150,873,651.45

            
	
              July
                2007

            	
              149,940,196.56

            
	
              August
                2007

            	
              148,945,002.60

            
	
              September
                2007

            	
              147,888,545.39

            
	
              October
                2007

            	
              146,771,340.27

            
	
              November
                2007

            	
              145,593,941.75

            
	
              December
                2007

            	
              144,356,943.11

            
	
              January
                2008

            	
              143,060,975.89

            
	
              February
                2008

            	
              141,706,709.44

            
	
              March
                2008

            	
              140,294,850.35

            
	
              April
                2008

            	
              138,826,141.88

            
	
              May
                2008

            	
              137,301,363.32

            
	
              June
                2008

            	
              135,721,329.33

            
	
              July
                2008

            	
              134,086,889.27

            
	
              August
                2008

            	
              132,398,926.40

            
	
              September
                2008

            	
              130,658,357.14

            
	
              October
                2008

            	
              128,867,138.60

            
	
              November
                2008

            	
              127,026,229.87

            
	
              December
                2008

            	
              125,136,620.21

            
	
              January
                2009

            	
              123,199,328.21

            
	
              February
                2009

            	
              121,274,840.00

            
	
              March
                2009

            	
              119,363,073.16

            
	
              April
                2009

            	
              117,463,945.83

            
	
              May
                2009

            	
              115,577,376.65

            
	
              June
                2009

            	
              113,703,284.83

            
	
              July
                2009

            	
              111,841,590.06

            
	
              August
                2009

            	
              109,992,212.60

            
	
              September
                2009

            	
              108,155,073.19

            
	
              October
                2009

            	
              106,330,093.12

            
	
              November
                2009

            	
              104,517,194.18

            
	
              December
                2009

            	
              102,716,298.66

            
	
              January
                2010

            	
              100,927,329.37

            
	
              February
                2010

            	
              99,150,209.63

            

    

    

    PAC
      Schedule page 1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              Distribution
                day in

            	
              Classes
                IA-2 through IA-4

              and
                IA-8 through IA-10

              aggregate
                planned balance

            
	
              March
                2010

            	
              97,384,863.24

            
	
              April
                2010

            	
              95,631,214.51

            
	
              May
                2010

            	
              93,889,188.24

            
	
              June
                2010

            	
              92,158,709.74

            
	
              July
                2010

            	
              90,439,704.77

            
	
              August
                2010

            	
              88,732,099.61

            
	
              September
                2010

            	
              87,035,821.00

            
	
              October
                2010

            	
              85,350,796.17

            
	
              November
                2010

            	
              83,676,952.82

            
	
              December
                2010

            	
              82,014,219.12

            
	
              January
                2011

            	
              80,362,523.72

            
	
              February
                2011

            	
              78,721,795.72

            
	
              March
                2011

            	
              77,091,964.70

            
	
              April
                2011

            	
              75,472,960.68

            
	
              May
                2011

            	
              73,864,714.16

            
	
              June
                2011

            	
              72,267,156.09

            
	
              July
                2011

            	
              70,680,217.85

            
	
              August
                2011

            	
              69,103,831.29

            
	
              September
                2011

            	
              67,537,928.70

            
	
              October
                2011

            	
              66,088,073.30

            
	
              November
                2011

            	
              64,648,413.22

            
	
              December
                2011

            	
              63,218,882.40

            
	
              January
                2012

            	
              61,799,415.21

            
	
              February
                2012

            	
              60,389,946.46

            
	
              March
                2012

            	
              58,990,411.37

            
	
              April
                2012

            	
              57,600,745.59

            
	
              May
                2012

            	
              56,220,885.21

            
	
              June
                2012

            	
              54,850,766.72

            
	
              July
                2012

            	
              53,490,327.02

            
	
              August
                2012

            	
              52,139,503.45

            
	
              September
                2012

            	
              50,798,233.74

            
	
              October
                2012

            	
              49,492,514.01

            
	
              November
                2012

            	
              48,196,058.38

            
	
              December
                2012

            	
              46,908,806.14

            
	
              January
                2013

            	
              45,630,696.95

            
	
              February
                2013

            	
              44,361,670.87

            
	
              March
                2013

            	
              43,101,668.38

            
	
              April
                2013

            	
              41,850,630.31

            
	
              May
                2013

            	
              40,608,497.92

            
	
              June
                2013

            	
              39,375,212.82

            
	
              July
                2013

            	
              38,151,356.24

            
	
              August
                2013

            	
              36,955,861.60

            
	
              September
                2013

            	
              35,788,134.44

            

    

    

    PAC
      Schedule page 2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              Distribution
                day in

            	
              Classes
                IA-2 through IA-4

              and
                IA-8 through IA-10

              aggregate
                planned balance

            
	
              October
                2013

            	
              34,782,038.30

            
	
              November
                2013

            	
              33,799,673.27

            
	
              December
                2013

            	
              32,840,524.30

            
	
              January
                2014

            	
              31,904,087.07

            
	
              February
                2014

            	
              30,989,867.69

            
	
              March
                2014

            	
              30,097,382.56

            
	
              April
                2014

            	
              29,226,158.11

            
	
              May
                2014

            	
              28,375,730.63

            
	
              June
                2014

            	
              27,545,646.07

            
	
              July
                2014

            	
              26,735,459.80

            
	
              August
                2014

            	
              25,944,736.49

            
	
              September
                2014

            	
              25,173,049.85

            
	
              October
                2014

            	
              24,535,306.75

            
	
              November
                2014

            	
              23,912,385.51

            
	
              December
                2014

            	
              23,303,958.60

            
	
              January
                2015

            	
              22,709,705.49

            
	
              February
                2015

            	
              22,129,312.49

            
	
              March
                2015

            	
              21,562,472.63

            
	
              April
                2015

            	
              21,008,885.47

            
	
              May
                2015

            	
              20,468,257.04

            
	
              June
                2015

            	
              19,940,299.62

            
	
              July
                2015

            	
              19,424,731.69

            
	
              August
                2015

            	
              18,921,277.74

            
	
              September
                2015

            	
              18,429,668.16

            
	
              October
                2015

            	
              18,043,888.11

            
	
              November
                2015

            	
              17,665,911.23

            
	
              December
                2015

            	
              17,295,581.56

            
	
              January
                2016

            	
              16,932,746.28

            
	
              February
                2016

            	
              16,577,255.58

            
	
              March
                2016

            	
              16,228,962.62

            
	
              April
                2016

            	
              15,887,723.48

            
	
              May
                2016

            	
              15,553,397.08

            
	
              June
                2016

            	
              15,225,845.14

            
	
              July
                2016

            	
              14,904,932.15

            
	
              August
                2016

            	
              14,580,188.46

            
	
              September
                2016

            	
              14,262,164.79

            
	
              October
                2016

            	
              13,950,724.82

            
	
              November
                2016

            	
              13,645,735.01

            
	
              December
                2016

            	
              13,347,064.43

            
	
              January
                2017

            	
              13,054,584.83

            
	
              February
                2017

            	
              12,768,170.49

            
	
              March
                2017

            	
              12,487,698.23

            

    

    

    PAC
      Schedule page 3

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              Distribution
                day in

            	
              Classes
                IA-2 through IA-4

              and
                IA-8 through IA-10

              aggregate
                planned balance

            
	
              April
                2017

            	
              12,213,047.33

            
	
              May
                2017

            	
              11,944,099.49

            
	
              June
                2017

            	
              11,680,738.78

            
	
              July
                2017

            	
              11,422,851.60

            
	
              August
                2017

            	
              11,170,326.62

            
	
              September
                2017

            	
              10,923,054.75

            
	
              October
                2017

            	
              10,680,929.07

            
	
              November
                2017

            	
              10,443,844.85

            
	
              December
                2017

            	
              10,211,699.40

            
	
              January
                2018

            	
              9,984,392.15

            
	
              February
                2018

            	
              9,761,824.50

            
	
              March
                2018

            	
              9,543,899.87

            
	
              April
                2018

            	
              9,330,523.59

            
	
              May
                2018

            	
              9,121,602.90

            
	
              June
                2018

            	
              8,917,046.91

            
	
              July
                2018

            	
              8,716,766.57

            
	
              August
                2018

            	
              8,520,674.57

            
	
              September
                2018

            	
              8,328,685.42

            
	
              October
                2018

            	
              8,140,715.30

            
	
              November
                2018

            	
              7,956,682.10

            
	
              December
                2018

            	
              7,776,505.35

            
	
              January
                2019

            	
              7,600,106.20

            
	
              February
                2019

            	
              7,427,407.40

            
	
              March
                2019

            	
              7,258,333.24

            
	
              April
                2019

            	
              7,092,809.55

            
	
              May
                2019

            	
              6,930,763.63

            
	
              June
                2019

            	
              6,772,124.26

            
	
              July
                2019

            	
              6,616,821.66

            
	
              August
                2019

            	
              6,464,787.44

            
	
              September
                2019

            	
              6,315,954.61

            
	
              October
                2019

            	
              6,170,257.51

            
	
              November
                2019

            	
              6,027,631.81

            
	
              December
                2019

            	
              5,888,014.48

            
	
              January
                2020

            	
              5,751,343.76

            
	
              February
                2020

            	
              5,617,559.14

            
	
              March
                2020

            	
              5,486,601.33

            
	
              April
                2020

            	
              5,358,412.24

            
	
              May
                2020

            	
              5,232,934.93

            
	
              June
                2020

            	
              5,110,113.65

            
	
              July
                2020

            	
              4,989,893.74

            
	
              August
                2020

            	
              4,872,221.66

            
	
              September
                2020

            	
              4,757,044.96

            

    

    

    PAC
      Schedule page 4

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              Distribution
                day in

            	
              Classes
                IA-2 through IA-4

              and
                IA-8 through IA-10

              aggregate
                planned balance

            
	
              October
                2020

            	
              4,644,312.24

            
	
              November
                2020

            	
              4,533,973.13

            
	
              December
                2020

            	
              4,425,978.30

            
	
              January
                2021

            	
              4,320,279.41

            
	
              February
                2021

            	
              4,216,829.09

            
	
              March
                2021

            	
              4,115,580.94

            
	
              April
                2021

            	
              4,016,489.49

            
	
              May
                2021

            	
              3,919,510.20

            
	
              June
                2021

            	
              3,824,599.42

            
	
              July
                2021

            	
              3,731,714.40

            
	
              August
                2021

            	
              3,640,813.25

            
	
              September
                2021

            	
              3,551,854.92

            
	
              October
                2021

            	
              3,464,799.21

            
	
              November
                2021

            	
              3,379,606.71

            
	
              December
                2021

            	
              3,296,238.85

            
	
              January
                2022

            	
              3,214,657.80

            
	
              February
                2022

            	
              3,134,826.52

            
	
              March
                2022

            	
              3,056,708.72

            
	
              April
                2022

            	
              2,980,268.84

            
	
              May
                2022

            	
              2,905,472.06

            
	
              June
                2022

            	
              2,832,284.25

            
	
              July
                2022

            	
              2,760,671.97

            
	
              August
                2022

            	
              2,690,602.49

            
	
              September
                2022

            	
              2,622,043.71

            
	
              October
                2022

            	
              2,554,964.20

            
	
              November
                2022

            	
              2,489,333.17

            
	
              December
                2022

            	
              2,425,120.46

            
	
              January
                2023

            	
              2,362,296.52

            
	
              February
                2023

            	
              2,300,832.39

            
	
              March
                2023

            	
              2,240,699.72

            
	
              April
                2023

            	
              2,181,870.73

            
	
              May
                2023

            	
              2,124,318.20

            
	
              June
                2023

            	
              2,068,015.47

            
	
              July
                2023

            	
              2,012,936.44

            
	
              August
                2023

            	
              1,959,055.51

            
	
              September
                2023

            	
              1,906,347.63

            
	
              October
                2023

            	
              1,854,788.24

            
	
              November
                2023

            	
              1,804,353.31

            
	
              December
                2023

            	
              1,755,019.27

            
	
              January
                2024

            	
              1,706,763.06

            
	
              February
                2024

            	
              1,659,562.07

            
	
              March
                2024

            	
              1,613,394.15

            

    

    

    PAC
      Schedule page 5

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              Distribution
                day in

            	
              Classes
                IA-2 through IA-4

              and
                IA-8 through IA-10

              aggregate
                planned balance

            
	
              April
                2024

            	
              1,568,237.64

            
	
              May
                2024

            	
              1,524,071.27

            
	
              June
                2024

            	
              1,480,874.24

            
	
              July
                2024

            	
              1,438,626.18

            
	
              August
                2024

            	
              1,397,307.11

            
	
              September
                2024

            	
              1,356,897.49

            
	
              October
                2024

            	
              1,317,378.15

            
	
              November
                2024

            	
              1,278,730.34

            
	
              December
                2024

            	
              1,240,935.68

            
	
              January
                2025

            	
              1,203,976.17

            
	
              February
                2025

            	
              1,167,834.18

            
	
              March
                2025

            	
              1,132,492.45

            
	
              April
                2025

            	
              1,097,934.06

            
	
              May
                2025

            	
              1,064,142.44

            
	
              June
                2025

            	
              1,031,101.38

            
	
              July
                2025

            	
              998,794.98

            
	
              August
                2025

            	
              967,207.68

            
	
              September
                2025

            	
              936,324.23

            
	
              October
                2025

            	
              906,129.70

            
	
              November
                2025

            	
              876,609.48

            
	
              December
                2025

            	
              847,749.24

            
	
              January
                2026

            	
              819,534.96

            
	
              February
                2026

            	
              791,952.90

            
	
              March
                2026

            	
              764,989.61

            
	
              April
                2026

            	
              738,631.91

            
	
              May
                2026

            	
              712,866.90

            
	
              June
                2026

            	
              687,681.94

            
	
              July
                2026

            	
              663,064.67

            
	
              August
                2026

            	
              639,002.95

            
	
              September
                2026

            	
              615,484.92

            
	
              October
                2026

            	
              592,498.96

            
	
              November
                2026

            	
              570,033.69

            
	
              December
                2026

            	
              548,077.95

            
	
              January
                2027

            	
              526,620.84

            
	
              February
                2027

            	
              505,651.65

            
	
              March
                2027

            	
              485,159.93

            
	
              April
                2027

            	
              465,135.42

            
	
              May
                2027

            	
              445,568.09

            
	
              June
                2027

            	
              426,448.11

            
	
              July
                2027

            	
              407,765.84

            
	
              August
                2027

            	
              389,511.86

            

    

    

    PAC
      Schedule page 6

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              Distribution
                day in

            	
              Classes
                IA-2 through IA-4

              and
                IA-8 through IA-10

              aggregate
                planned balance

            
	
              September
                2027

            	
              371,676.96

            
	
              October
                2027

            	
              354,252.07

            
	
              November
                2027

            	
              337,228.37

            
	
              December
                2027

            	
              320,597.17

            
	
              January
                2028

            	
              304,350.01

            
	
              February
                2028

            	
              288,478.56

            
	
              March
                2028

            	
              272,974.70

            
	
              April
                2028

            	
              257,830.46

            
	
              May
                2028

            	
              243,038.03

            
	
              June
                2028

            	
              228,589.79

            
	
              July
                2028

            	
              214,478.26

            
	
              August
                2028

            	
              200,696.12

            
	
              September
                2028

            	
              187,236.19

            
	
              October
                2028

            	
              174,091.47

            
	
              November
                2028

            	
              161,255.08

            
	
              December
                2028

            	
              148,720.30

            
	
              January
                2029

            	
              136,480.53

            
	
              February
                2029

            	
              124,529.34

            
	
              March
                2029

            	
              112,860.41

            
	
              April
                2029

            	
              101,467.56

            
	
              May
                2029

            	
              90,344.74

            
	
              June
                2029

            	
              79,486.03

            
	
              July
                2029

            	
              68,885.63

            
	
              August
                2029

            	
              58,537.86

            
	
              September
                2029

            	
              48,437.16

            
	
              October
                2029

            	
              38,578.10

            
	
              November
                2029

            	
              28,955.35

            
	
              December
                2029

            	
              19,563.70

            
	
              January
                2030

            	
              10,398.04

            
	
              February
                2030

            	
              1,453.37

            
	
              March
                2030

            	
              0.00

            

    

    

    

    

    

    

    

    

    

    

    

    

    PAC
      Schedule page 7

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    APPENDIX
      1

     

    TRANSFEREE’S
      AFFIDAVIT

     

    Transferee’s
      Affidavit

    Affidavit
      Pursuant to Section 

    860e(E)(4)
      of the Internal

    Revenue
      Code of 1986, As Amended

     

    STATE
      OF     )

            ):

    COUNTY
      OF
      )

     

    [
      ],
      being first duly sworn, deposes and says:

    1. That
      he
      is [______________] of [_____________] (the “Investor”), a [state type of
      entity] duly organized and existing under the laws of the [State of
      ____________] [United States], on behalf of which he makes this
      affidavit.

     

    2. That
      the
      Investor’s Taxpayer Identification Number is [______________].

     

    3. That
      the
      Investor is not a “disqualified organization” within the meaning of Section
      860E(e)(5) of the Internal Revenue Code of 1986, as amended (the “Internal
      Revenue Code”) or an ERISA
      Prohibited holder, and will not be a “disqualified organization” or an
ERISA
      Prohibited holder as of [ ,
       ],
      and
      that the Investor is not acquiring a CMALT (CitiMortgage Alternative Loan
      Trust), Series 200[...]-[  ] REMIC Pass-Through Certificates, class
      [R][LR][PR] certificates (the “residual certificates”) for the account of, or as
      agent (including a broker, nominee or other middleman) for, any person or entity
      from which it has not received an affidavit substantially in the form of this
      affidavit. For these purposes, a “disqualified organization” means the United
      States, any state or political subdivision thereof, any foreign governments
      any
      international organization, any agency or instrumentality of any of the
      foregoing (other than an instrumentality if all of its activities are subject
      to
      tax and a majority of its board of directors is not appointed by such
      governmental entity), any cooperative organization furnishing electric energy
      or
      providing telephone service to persons in rural areas described in Internal
      Revenue Code Section 1381(a)(2)(C), or any organization (other than a farmers’
cooperative described in Internal Revenue Code Section 521) that is exempt
      from
      federal income tax unless such organization is subject to the tax on unrelated
      business income imposed by Internal Revenue Code Section 511. For these
      purposes, an “ERISA
      Prohibited holder” means an employee benefit plan the investment of which is
      regulated under Section 406 of the Employee Retirement Income Security Act
      of
      1974, as amended, or Internal Revenue Code Section 4975 or a governmental plan,
      as defined in Section 3(32) of ERISA,
      subject
      to any federal, state or local law which is, to a material extent, similar
      to
      the foregoing provisions of ERISA
      or the
      Internal Revenue Code (collectively, a “Plan”) or a person investing the assets
      of a Plan.

     

    4. That
      the
      Investor historically has paid its debts as they have come due and intends
      to
      pay its debts as they come due in the future and the Investor intends to pay
      taxes associated with holding the residual certificates as they become
      due.

     

    5. That
      the
      Investor will not cause the income with respect to the residual certificates
      to
      be attributable to a foreign permanent establishment or fixed base, within
      the
      meaning of an applicable income tax treaty, of the Investor or any other
      person.

     

    6. That
      the
      Investor understands that it may incur tax liabilities with respect to the
      residual certificates
      in excess of cash flows generated by the residual certificates.

     

    7. That
      the
      Investor will not transfer the residual certificates to any person or entity
      as
      to which the Investor has actual knowledge that the requirements set forth
      in
      paragraphs 3, 4, 5 or 8 are not satisfied or that the Investor has reason to
      know does not satisfy the requirements set forth in paragraph 4.

    

    

     

    Appendix
      1 page 1

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    8 That
      the
      Investor (i) is not a Non-U.S. person or (ii) is a Non-U.S. person that holds
      the residual certificates in connection with the conduct of a trade or business
      within the United States and has furnished the transferor and the Trustee with
      an effective Internal Revenue Service Form W-8ECI
      or (iii)
      is a Non-U.S. person that has delivered to both the transferor and the Trustee
      an opinion of a nationally recognized tax counsel to the effect that the
      transfer of the residual certificates to it is in accordance with the
      requirements of the Internal Revenue Code and the regulations promulgated
      thereunder and that such transfer of the residual certificates will not be
      disregarded for federal income tax purposes. “Non-U.S. person” will mean an
      individual, corporation, partnership or other person other than a “U.S.
      person.” “U.S.
      person” will mean a citizen or resident of the United States, a corporation,
      partnership (except to the extent provided in applicable Treasury regulations)
      or other entity created or organized in or under the laws of the United States
      or any political subdivision thereof, an estate that is subject to U.S. 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 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 be treated as U.S. persons).

     

    9. That
      the
      Investor agrees to such amendments of the Pooling and Servicing Agreement dated
      as of [__________] 1, 200[...] between Citicorp Mortgage Securities, Inc.,
      CitiMortgage, Inc., and [Trustee] [and Paying Agent] (the “Pooling and Servicing
      Agreement”) as may be required to further effectuate the restrictions on
      transfer of the residual certificates to such a “disqualified organization,” an
      agent thereof, an “ERISA
      Prohibited holder” or a person that does not satisfy the requirements of
      paragraphs 4, 5, 6 and 8.

     

    10. That
      the
      Investor consents to the irrevocable designation of CMSI
      as its
      agent to act as “tax matters person” of the REMIC
      pursuant
      to the Pooling and Servicing Agreement, and if such designation is not permitted
      by the Internal Revenue Code and applicable law, to act as tax matters person
      if
      requested to do so.

     

    11. Check
      one
      of the following:

    [_] The
      Investor has computed any consideration paid to it to acquire the residual
      certificates in accordance U.S. Treasury Regulations Sections 1.860E-1(c)(7)
      by
      computing present values using a discount rate equal to the short-term Federal
      rate prescribed by Section 1274(d) of the Code, compounded based on the period
      selected by the Investor.

    [_] The
      transfer of the residual certificates complies with U.S. Treasury Regulations
      Section 1.860E-1(c)(5) and, accordingly,

    (i) the
      Investor is an “eligible corporation,” as defined in U.S. Treasury Regulations
      Section 1.860E-1(c)(6)(i), as to which income from the residual certificates
      will only be taxed in the United States;

    (ii) at
      the
      time of the transfer, and at the close of the Investor's two fiscal years
      preceding the year of the transfer, the Investor had gross assets for financial
      reporting purposes (excluding any obligation of a person related to the Investor
      within the meaning of U.S. Treasury Regulations Section 1.860E-1(c)(6)(ii),)
      in
      excess of $100 million and net assets in excess of $10 million;

    (iii) the
      Investor will transfer the residual certificates only to another “eligible
      corporation,” as defined in U.S. Treasury Regulations Section 1.860E-1(c)(6)(i),
      in a transaction that satisfies the requirements of Sections 1.860E-1(c)(4)(i),
      (ii) and (iii) and 1.860E-1(c)(5); and

    (iv) the
      Investor determined the consideration paid to it to acquire the residual
      certificates based on reasonable market assumptions (including, but not limited
      to, borrowing and investment rates, prepayment and loss assumptions, expense
      and
      reinvestment assumptions, tax rates and other factors specific to the Investor)
      that it has determined in good faith.

    [_] None
      of
      the above.

     

    

     

     

    

     

     

    Appendix
      1 page 2

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    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 200__.

     

    __________________

    

    By:_______________

    Name:

    Title:

     

    COUNTY
      OF
      )

            )

    STATE
      OF    )

     

    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 to before me this ___ day of ________ 200__.

     

    

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    

     

     

    Appendix
      1 page 3

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXHIBIT
      A-1

    FORM
      OF OFFERED CERTIFICATES

    

     

    CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4

     

    REMIC
      Pass-Through Certificates

     

    Certificate

     

    representing
      an ownership interest in a trust fund consisting

     

    primarily
      of mortgage loans acquired by

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    certificate
      no. 1

     

    distribution
      days: 25th of each month or next business day

     

    first
      distribution day: October 25, 2006

     

    last
      scheduled distribution date: [August 25, 2021][September 25, 2036]

     

    
      	
              Unless
                this certificate is presented by an authorized representative of
                The
                Depository Trust Company, a New York corporation (“DTC”) to Citicorp
                Mortgage Securities, Inc. 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 DTC (and any payment is made to Cede & Co. or such
                other entity as is requested by an authorized representative of DTC),
                any
                transfer, pledge, or other use hereof for value or otherwise by or
                to any
                person is wrongful inasmuch as the registered owner hereof, Cede
&
                Co., has an interest herein.

               

              Neither
                this certificate nor the underlying mortgage loans are insured or
                guaranteed by the United States government, the Federal Deposit Insurance
                Corporation or any other governmental agency or instrumentality.
                This
                certificate does not represent an interest in or obligation of Citicorp
                Mortgage Securities, Inc., CitiMortgage, Inc., any affiliate thereof,
                or
                their ultimate parent, Citigroup Inc.

               

            

    

     

    THIS
      CERTIFIES THAT, for value received, Cede & Co. is the registered holder of
      the number of single certificates (each representing $1,000.00 initial principal
      balance or, if indicated, initial notional balance) of the class of certificates
      listed below.

     

    
      	
               

              class

            	
              initial
                principal (or, if indicated, initial notional) balance

            	
               

              certificate
                rate

            	
               

              number
                of single certificates

            	
               

              CUSIP

            	
               

              ISIN

            
	
               

              [class]

            	
               

              $[number]

            	
               

              [rate]

            	
               

              [number]

            	
               

              [CUSIP]

            	
               

              [ISIN]

            

    

     

    A-1-1

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    This
      certificate represents an undivided beneficial ownership interest in the Trust
      Fund created pursuant to the Pooling and Servicing Agreement dated as of
      September 1, 2006 (the “Pooling Agreement”) between Citicorp Mortgage
      Securities, Inc., as Depositor, CitiMortgage, Inc., as Servicer and Master
      Servicer, U.S. Bank National Association, as Trustee, and Citibank, N.A. as
      Paying Agent, Certificate Registrar and Authentication Agent. Terms used in
      this
      certificate that are defined in the Pooling Agreement have the meanings assigned
      to them in the Pooling Agreement.

     

     

    This
      certificate is one of a duly authorized issue of certificates designated as
      CMALT (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC Pass-Through
      Certificates, consisting of seventeen senior classes, six subordinated classes
      and three classes of residual certificates.

     

     

    The
      class
      of securities represented by this certificate is a “regular interest” in a real
      estate mortgage investment conduit (“REMIC”) within the meaning of Section
      860G(a)(1) of the Internal Revenue Code of 1986, as amended.

     

     

    Certificates
      governed by Pooling Agreement

     

    The
      certificates are issued pursuant to the Pooling Agreement, which states the
      rights, limitations (including restrictions on transfer), duties and immunities
      of CMSI, the Trustee and the holders of the certificates, specifies how amounts
      of interest and principal distributable on the classes of certificates are
      calculated and when such amounts are payable, sets forth the relative priorities
      of the classes of certificates to payments and to allocation of losses, and
      sets
      forth the terms upon which the certificates are to be authenticated and
      delivered, and other matters relevant to an investment in certificates. Holders
      may obtain a copy of the Pooling Agreement (without exhibits) from the
      Trustee.

     

    Optional
      early termination

     

    

    This
      certificate may receive a final distribution of all amounts owing in respect
      of
      the class represented by this certificate before its last scheduled distribution
      day if CMSI (or its assignee) exercises its right under the Pooling Agreement
      to
      repurchase all of the mortgage loans in the Trust Fund. This right cannot be
      exercised until the aggregate scheduled principal balance of such mortgage
      loans
      is less than 10% of the aggregate scheduled principal balance of the mortgage
      loans as of the cut-off date.

    

     

    Governing
      law

     

    This
      certificate and the Pooling Agreement are governed by the laws of the State
      of
      New York.

    

    

    

    

    

    A-1-2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

     

     

    Authentication
      required

     

    Unless
      this certificate has been executed by the Trustee or a duly authorized
      Authenticating Agent by manual signature, this certificate shall not be entitled
      to any benefit under the Pooling Agreement or be valid for any
      purpose.

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-1-3

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    IN
      WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate
      to be duly executed.

     

    

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    

     

    

     

    By:_______________________________

    Daniel
      P.
      Hoffman

    President

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-1-4

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    This
      is
      one of the certificates referred to in the Pooling Agreement referred to
      above.

     

    

     

    U.S.
      BANK
      NATIONAL ASSOCIATION,

    as
      Trustee

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    or

     

    CITIBANK,
      N.A.,

    as
      Authenticating Agent for
      the
      Trustee,

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    Date:
      September 28, 2006

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-1-5

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

     

    ABBREVIATIONS

    

    The
      following abbreviations, when used in the inscription on the face of this
      certificate, shall be construed as though they were written out in full
      according to applicable laws or regulations:

    

    TEN
      COM -
      as tenants in common

    TEN
      ENT -
      as tenants by the entireties

    JT
      TEN -
      as joint tenants with right of survivorship and not as tenants in
      common

    

    UNIF
      GIFT
      MIN ACT - _______________ Custodian ____________________

    (Cust)    (Minor)

    Under
      Uniform Gifts to Minors Act ___________________________________

    (State)

    

    Additional
      abbreviations may also be used though not in the above list.

    ______________________________________________________________________________

    

    FOR
      VALUE
      RECEIVED, the undersigned hereby sells, assigns and transfers unto

    

    PLEASE
      INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER

    OF
      ASSIGNEE

    

    ________________________________________________________________

    ________________________________________________________________

    (Please
      print or typewrite name and address, including zip code, of
      assignee)

    

    ________________________________________________________________

    the
      within certificate, and all rights thereunder, hereby irrevocably constituting
      and appointing

    

    ________________________________________________________________

    attorney
      to transfer said certificate on the books of the Certificate Registrar with
      full
      power of substitution in the premises.

    

    Dated: ________________ __________________________

    

    Signature
      Guaranteed by:_________________________________________

    

    NOTICE:
      the signature to this assignment must correspond with the name as written upon
      the face of the within instrument in every particular, without alteration or
      enlargement or any change whatever, and must be guaranteed by a member of a
      Signature Guarantee Medallion Program.

    

    A-1-6

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    EXHIBIT
      A-2

    FORM
      OF CLASS A-IO CERTIFICATES

    

    CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4

    REMIC
      Pass-Through Certificates 

     

    Senior
      Class [IA-IO][IIA-IO] Certificate, Variable Certificate
      Rate

     

    representing
      an ownership interest in a trust fund consisting

     

    primarily
      of mortgage loans acquired by

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    
      	
              certificate
                no. 1

               

            	
              CUSIP
                [          
                ]

               

            
	 	 
	
              $[             
                ] initial notional balance

               

            	
              [        
                 ] Single Certificates

               

            

    

    distribution
      days: 25th of each month or next business day

     

    first
      distribution day: October 25, 2006

     

    last
      scheduled distribution day: [August 25, 2021][September 25, 2036]

     

    

     

    
      	
              This
                certificate is an interest only certificate and is not entitled to
                distributions of principal.

               

              The
                notional balance of this certificate is subject to reduction from
                time to
                time. Accordingly, the outstanding notional balance of this certificate
                at
                any time may be less than its initial notional
                balance.

               

              Neither
                this certificate nor the underlying mortgage loans are insured or
                guaranteed by the United States government, the Federal Deposit Insurance
                Corporation or any other governmental agency or instrumentality.
                This
                certificate does not represent an interest in or obligation of Citicorp
                Mortgage Securities, Inc., CitiMortgage, Inc., any affiliate thereof,
                or
                their ultimate parent, Citigroup Inc.

               

            

    

    

     

    THIS
      CERTIFIES THAT, for value received, CitiMortgage, Inc. is the registered holder
      of the number of single certificates (each representing $1,000.00 initial
      notional balance) set forth above. Each certificate represents an undivided
      beneficial ownership interest in the Trust Fund created pursuant to the Pooling
      and Servicing Agreement dated as of September 1, 2006 (the “Pooling Agreement”)
      between Citicorp Mortgage Securities, Inc., as Depositor, CitiMortgage, Inc.,
      as
      Servicer and Master Servicer, U.S. Bank National Association, as Trustee, and
      Citibank, N.A. as Paying Agent, Certificate Registrar and Authentication Agent.
      Terms used in this certificate that are defined in the Pooling Agreement have
      the meanings assigned to them in the Pooling Agreement.

     

    

     

    A-2-1

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

     

    This
      certificate is one of a duly authorized issue of certificates designated as
      CMALT (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC Pass-Through
      Certificates, consisting of seventeen senior classes, six subordinated classes
      and three classes of residual certificates.

     

    The
      class
      of securities represented by this certificate is a “regular interest” in a real
      estate mortgage investment conduit (“REMIC”) within the meaning of Section
      860G(a)(1) of the Internal Revenue Code of 1986, as amended.

     

    

     

     

    Certificates
      governed by Pooling Agreement

     

    The
      certificates are issued pursuant to the Pooling Agreement, which states the
      rights, limitations (including restrictions on transfer), duties and immunities
      of CMSI, the Trustee and the holders of the certificates, specifies how amounts
      of interest and principal distributable on the classes of certificates are
      calculated and when such amounts are payable, sets forth the relative priorities
      of the classes of certificates to payments and to allocation of losses, and
      sets
      forth the terms upon which the certificates are to be authenticated and
      delivered, and other matters relevant to an investment in certificates. Holders
      may obtain a copy of the Pooling Agreement (without exhibits) from the
      Trustee.

     

    

     

     

    Optional
      early termination

     

    This
      certificate may receive a final distribution of all amounts owing in respect
      of
      the class represented by this certificate before its last scheduled distribution
      day if CMSI (or its assignee) exercises its right under the Pooling Agreement
      to
      repurchase all of the mortgage loans in the Trust Fund. This right cannot be
      exercised until the aggregate scheduled principal balance of such mortgage
      loans
      is less than 10% of the aggregate scheduled principal balance of the mortgage
      loans as of the cut-off date.

    

     

    Governing
      law

     

    This
      certificate and the Pooling Agreement are governed by the laws of the State
      of
      New York.

    

    

    

    

    A-2-2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

     

     

    Authentication
      required

     

    Unless
      this certificate has been executed by the Trustee or a duly authorized
      Authenticating Agent by manual signature, this certificate shall not be entitled
      to any benefit under the Pooling Agreement or be valid for any
      purpose.

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-2-3

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    IN
      WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate
      to be duly executed.

     

    

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    

     

    

     

    By:_______________________________

    Daniel
      P.
      Hoffman

    President

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-2-4

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    This
      is
      one of the certificates referred to in the Pooling Agreement referred to
      above.

     

    

     

    U.S.
      BANK
      NATIONAL ASSOCIATION,

    as
      Trustee

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    or

     

    CITIBANK,
      N.A.,

    as
      Authenticating Agent for
      the
      Trustee,

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    Date:
      September 28, 2006

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-2-5

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    ABBREVIATIONS

    

    The
      following abbreviations, when used in the inscription on the face of this
      certificate, shall be construed as though they were written out in full
      according to applicable laws or regulations:

    

    TEN
      COM -
      as tenants in common

    TEN
      ENT -
      as tenants by the entireties

    JT
      TEN -
      as joint tenants with right of survivorship and not as tenants in
      common

    

    UNIF
      GIFT
      MIN ACT - _______________ Custodian ____________________

    (Cust)    (Minor)

    Under
      Uniform Gifts to Minors Act ___________________________________

    (State)

    

    Additional
      abbreviations may also be used though not in the above list.

    ________________________________________________________________________

    

    FOR
      VALUE
      RECEIVED, the undersigned hereby sells, assigns and transfers unto

    

    PLEASE
      INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER

    OF
      ASSIGNEE

    ________________________________________________________________

    ________________________________________________________________

    (Please
      print or typewrite name and address, including zip code, of
      assignee)

    

    ________________________________________________________________

    the
      within certificate, and all rights thereunder, hereby irrevocably constituting
      and appointing

    

    ________________________________________________________________

    attorney
      to transfer said certificate on the books of the Certificate Registrar with
      full
      power of substitution in the premises.

    

    Dated: ________________ __________________________

    

    Signature
      Guaranteed by:_________________________________________

    

    NOTICE:
      the signature to this assignment must correspond with the name as written upon
      the face of the within instrument in every particular, without alteration or
      enlargement or any change whatever, and must be guaranteed by a member of a
      Signature Guarantee Medallion Program.

    A-2-6

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXHIBIT
      A-3

    FORM
      OF CLASS B-4, B-5 AND B-6 CERTIFICATES

    

    CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4

    REMIC
      Pass-Through Certificates

    Subordinated
      Class B-[4][5][6] Certificate, Blended Certificate Rate

    

     

    representing
      an ownership interest in a trust fund consisting

     

    primarily
      of mortgage loans acquired by

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    

     

    
      	
              certificate
                no. 1

               

            	
              CUSIP
                [             
                ]

               

            
	 	
              ISIN
                [             
                ]

               

            
	
              $[                ]
                initial notional balance

               

            	
              $[                ]
                Single Certificates

               

            

    

    distribution
      days: 25th of each month or next business day

     

    first
      distribution day: October 25, 2006

     

    last
      scheduled distribution day: September 25, 2036

     

    
      	
              This
                class B-[4][5][6] certificate is subordinated in right of payments
                to the
                class A, B-1, B-2[,][and] B-3[,] [and] [B-4] [and B-5] certificates,
                as
                described in the Pooling Agreement referred to
                below.

               

              Principal
                is paid on this certificate in accordance with the terms of the Pooling
                Agreement. Accordingly, at any time the outstanding principal balance
                of
                this certificate may be less than its initial principal
                balance.

               

              This
                certificate has not been registered under the Securities Act of 1933,
                as
                amended, and may not be sold, or offered for sale, transferred or
                otherwise disposed of unless such sale, transfer or other disposition
                is
                made pursuant to an effective registration statement under such act
                and
                any applicable blue sky law or unless an exemption under such act
                and any
                applicable blue sky law is available.

               

            

    

    

    

    A-3-1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              This
                certificate may not be purchased by or transferred to any person
                that is
                an employee benefit plan subject to Title I of the Employee Retirement
                Income Security Act of 1974, as amended (“ERISA”) or Section 4975 of the
                Internal Revenue Code of 1986, as amended (the “Code”) or any Governmental
                Plan, as defined in Section 3(32) of ERISA, subject to any federal,
                state
                or local law which is, to a material extent, similar to the foregoing
                provisions of ERISA or the Code (collectively, a “Plan”) or any person
                investing the assets of a Plan except as provided in section 5.2
                of the
                Pooling Agreement.

               

              Neither
                this certificate nor the underlying mortgage loans are insured or
                guaranteed by the United States government, the Federal Deposit Insurance
                Corporation or any other governmental agency or instrumentality.
                This
                certificate does not represent an interest in or obligation of Citicorp
                Mortgage Securities, Inc., CitiMortgage, Inc., any affiliate thereof,
                or
                their ultimate parent, Citigroup Inc.

               

            

    

     

    THIS
      CERTIFIES THAT, for value received, HSBC Securities (USA) Inc. is the registered
      holder of the number of single certificates (each representing $1,000.00 initial
      principal balance) set forth above. Each certificate represents an undivided
      beneficial ownership interest in the Trust Fund created pursuant to the Pooling
      and Servicing Agreement dated as of September 1, 2006 (the “Pooling Agreement”)
      between Citicorp Mortgage Securities, Inc., as Depositor, CitiMortgage, Inc.,
      as
      Servicer and Master Servicer, U.S. Bank National Association, as Trustee, and
      Citibank, N.A. as Paying Agent, Certificate Registrar and Authentication Agent.
      Terms used in this certificate that are defined in the Pooling Agreement have
      the meanings assigned to them in the Pooling Agreement.

     

    This
      certificate is one of a duly authorized issue of certificates designated as
      CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC
      Pass-Through Certificates, consisting of seventeen senior classes, six
      subordinated classes and three classes of residual certificates.

     

    The
      class
      of securities represented by this certificate is a “regular interest” in a real
      estate mortgage investment conduit (“REMIC”) within the meaning of Section
      860G(a)(1) of the Internal Revenue Code of 1986, as amended.

     

     

    Certificates
      governed by Pooling Agreement

     

    The
      certificates are issued pursuant to the Pooling Agreement, which states the
      rights, limitations (including restrictions on transfer), duties and immunities
      of CMSI, the Trustee and the holders of the certificates, specifies how amounts
      of interest and principal distributable on the classes of certificates are
      calculated and when such amounts are payable, sets forth the relative priorities
      of the classes of certificates to payments and to allocation of losses, and
      sets
      forth the terms upon which the certificates are to be authenticated and
      delivered, and other matters relevant to an investment in certificates. Holders
      may obtain a copy of the Pooling Agreement (without exhibits) from the
      Trustee.

     

    

     

    

     

    

     

    A-3-2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    Optional
      early termination

     

    This
      certificate may receive a final distribution of all amounts owing in respect
      of
      the class represented by this certificate before its last scheduled distribution
      day if CMSI (or its assignee) exercises its right under the Pooling Agreement
      to
      repurchase all of the mortgage loans in the Trust Fund. This right cannot be
      exercised until the aggregate scheduled principal balance of such mortgage
      loans
      is less than 10% of the aggregate scheduled principal balance of the mortgage
      loans as of the cut-off date.

     

    Governing
      law

     

    This
      certificate and the Pooling Agreement are governed by the laws of the State
      of
      New York.

     

     

    Authentication
      required

     

    Unless
      this certificate has been executed by the Trustee or a duly authorized
      Authenticating Agent by manual signature, this certificate shall not be entitled
      to any benefit under the Pooling Agreement or be valid for any
      purpose.

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-3-3

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    IN
      WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate
      to be duly executed.

     

    

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    

     

    

     

    By:_______________________________

    Daniel
      P.
      Hoffman

    President

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-3-4

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    This
      is
      one of the certificates referred to in the Pooling Agreement referred to
      above.

     

    

     

    U.S.
      BANK
      NATIONAL ASSOCIATION,

    as
      Trustee

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    or

     

    CITIBANK,
      N.A.,

    as
      Authenticating Agent for
      the
      Trustee,

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    Date:
      September 28, 2006

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-3-5

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    ABBREVIATIONS

    

    The
      following abbreviations, when used in the inscription on the face of this
      certificate, shall be construed as though they were written out in full
      according to applicable laws or regulations:

    

    TEN
      COM -
      as tenants in common

    TEN
      ENT -
      as tenants by the entireties

    JT
      TEN -
      as joint tenants with right of survivorship and not as tenants in
      common

    

    UNIF
      GIFT
      MIN ACT - _______________ Custodian ____________________

    (Cust)    (Minor)

    Under
      Uniform Gifts to Minors Act ___________________________________

    (State)

    

    Additional
      abbreviations may also be used though not in the above list.

    ________________________________________________________________________

    

    FOR
      VALUE
      RECEIVED, the undersigned hereby sells, assigns and transfers unto

    

    PLEASE
      INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER

    OF
      ASSIGNEE

    

    ________________________________________________________________

    ________________________________________________________________

    (Please
      print or typewrite name and address, including zip code, of
      assignee)

    

    ________________________________________________________________

    the
      within certificate, and all rights thereunder, hereby irrevocably constituting
      and appointing

    

    ________________________________________________________________

    attorney
      to transfer said certificate on the books of the Certificate Registrar with
      full
      power of substitution in the premises.

    

    Dated: ________________ __________________________

    

    Signature
      Guaranteed by:_________________________________________

    

    NOTICE:
      the signature to this assignment must correspond with the name as written upon
      the face of the within instrument in every particular, without alteration or
      enlargement or any change whatever, and must be guaranteed by a member of a
      Signature Guarantee Medallion Program.

    

    A-3-6

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXHIBIT
      A-4

    FORM
      OF RESIDUAL CLASS PR, LR AND R CERTIFICATES

     

    CMALT
      (CitiMortgage Alternative Loan Trust), Series 2006-A4

    REMIC
      Pass-Through Certificates 

    Residual
      Class [PR][LR][R] Certificate

    representing
      an ownership interest in a trust fund consisting

     

    primarily
      of mortgage loans acquired by 

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    
      	
              certificate
                no. 1

               

            	
              100%
                percentage interest

               

            

    

    

    
      	
              This
                certificate has not been registered under the Securities Act of 1933,
                as
                amended, and may not be sold, or offered for sale, transferred or
                otherwise disposed of unless such sale, transfer or other disposition
                is
                made pursuant to an effective registration statement under such act
                and
                any applicable blue sky law or unless an exemption under such act
                and any
                applicable blue sky law is available.

               

              This
                certificate may not be purchased by or transferred to any person
                that is
                an employee benefit plan subject to Title I of the Employee Retirement
                Income Security Act of 1974, as amended (“ERISA”) or Section 4975 of the
                Internal Revenue Code of 1986, as amended (the “Code”) or any Governmental
                Plan, as defined in Section 3(32) of ERISA, subject to any federal,
                state
                or local law which is, to a material extent, similar to the foregoing
                provisions of ERISA or the Code (collectively, a “Plan”) or any person
                investing the assets of a Plan except as provided in section 5.2
                of the
                Pooling Agreement referred to below.

               

              Transfer
                of this certificate is restricted as set forth in section 5.2 of
                the
                Pooling Agreement. As a condition of ownership of this certificate,
                a
                transferee must furnish an affidavit to the transferor and the Trustee
                that (a) it is not a “disqualified organization,” as defined in Section
                860e(e)(5) of the Code, (b) it is not acquiring this certificate
                as an
                agent (including a broker, nominee or other middleman) on behalf
                of a
                disqualified organization, (c) it understands that it may incur tax
                liabilities in excess of cash flows generated by the residual interest
                and
                it intends to pay taxes associated with holding the residual interest
                as
                they become due, (d) it historically has paid its debts as they have
                come
                due and intends to pay its debts as they come due in the future,
                (e) it
                will not cause the income with respect to this certificate to be
                attributable to a foreign permanent establishment or fixed base,
                within
                the meaning of an applicable income tax treaty, of it or any other
                person,
                and (f) it is not a “Non-permitted Foreign holder,” as defined in section
                5.2 of the Pooling Agreement. By accepting this certificate, a transferee
                will be subject to such restrictions on transferability, and will
                have
                consented to any amendments to the Pooling Agreement that are required
                to
                ensure that this certificate is not transferred to a disqualified
                organization or its agent, or to a Non-permitted Foreign holder.
                To
                satisfy a regulatory safe harbor against the disregard of such transfer,
                the transferor may be required to conduct a reasonable investigation
                of
                the financial condition of the transferee and either transfer this
                certificate at a specified minimum price or transfer this certificate
                to
                an eligible transferee.

               

            

    

    A-4-1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    
      	
              Neither
                this certificate nor the underlying mortgage loans are insured or
                guaranteed by the United States government, the Federal Deposit Insurance
                Corporation or any other governmental agency or instrumentality.
                This
                certificate does not represent an interest in or obligation of Citicorp
                Mortgage Securities, Inc., CitiMortgage, Inc., any affiliate thereof,
                or
                their ultimate parent, Citigroup Inc.

               

            

    

    

     

    THIS
      CERTIFIES THAT, for value received, [CitiMortgage, Inc.][Citicorp Mortgage
      Securities, Inc.] is the registered holder of the percentage interest set forth
      above, representing an ownership interest in the Trust Fund created pursuant
      to
      the Pooling and Servicing Agreement dated as of September 1, 2006 (the “Pooling
      Agreement”) between Citicorp Mortgage Securities, Inc., as Depositor,
      CitiMortgage, Inc., as Servicer and Master Servicer, U.S. Bank National
      Association, as Trustee, and Citibank, N.A. as Paying Agent, Certificate Agent
      and Authentication Agent. Terms used in this certificate that are defined in
      the
      Pooling Agreement have the meanings assigned to them in the Pooling
      Agreement.

     

     

    This
      certificate is one of a duly authorized issue of certificates designated as
      CMALT (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC Pass-Through
      Certificates, consisting of seventeen senior classes, six subordinated classes
      and three classes of residual certificates.

     

     

    Certificates
      governed by Pooling Agreement

     

    The
      certificates are issued pursuant to the Pooling Agreement, which states the
      rights, limitations (including restrictions on transfer), duties and immunities
      of CMSI, the Trustee and the holders of the certificates, specifies how amounts
      of interest and principal distributable on the classes of certificates are
      calculated and when such amounts are payable, sets forth the relative priorities
      of the classes of certificates to payments and to allocation of losses, and
      sets
      forth the terms upon which the certificates are to be authenticated and
      delivered, and other matters relevant to an investment in certificates. Holders
      may obtain a copy of the Pooling Agreement (without exhibits) from the
      Trustee.

     

     

    U.S.
      federal income tax information

     

    Elections
      will be made to treat three segregated asset pools within the Trust Fund as
      real
      estate mortgage investment conduits (each, a “REMIC,” or in the alternative, the
“upper-tier REMIC,” the “lower-tier REMIC,” and the “pooling REMIC,”
respectively). This class [PR][LR][R] certificate represents the “residual
      interest” in the [pooling][lower-tier][upper-tier] REMIC within the meaning of
      Code Section 860G(a)(2). As a condition of ownership of this certificate, the
      holder hereof agrees that it will not take or cause to be taken any action
      that
      would adversely affect the status of any of the three segregated asset pools
      comprising the Trust Fund as a REMIC.

     

    The
      holder further agrees to the designation of the Servicer as its agent to act
      as
“tax matters person” for purposes of Subchapter C of Chapter 63 of Subtitle F of
      the Code or, if requested by the Servicer, to act as tax matters
      person.

     

    A-4-2

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    Governing
      law

     

    This
      certificate and the Pooling Agreement are governed by the laws of the State
      of
      New York.

     

     

    Authentication
      required

     

    Unless
      this certificate has been executed by the Trustee or a duly authorized
      Authenticating Agent by manual signature, this certificate shall not be entitled
      to any benefit under the Pooling Agreement or be valid for any
      purpose.

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-4-3

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    IN
      WITNESS WHEREOF, Citicorp Mortgage Securities, Inc. has caused this certificate
      to be duly executed.

     

    

     

    CITICORP
      MORTGAGE SECURITIES, INC.

     

    

     

    

     

    By:_______________________________

    Daniel
      P.
      Hoffman

    President

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-4-4

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    This
      is
      one of the certificates referred to in the Pooling Agreement referred to
      above.

     

    

     

    U.S.
      BANK
      NATIONAL ASSOCIATION,

    as
      Trustee

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    or

     

    CITIBANK,
      N.A.,

    as
      Authenticating Agent for
      the
      Trustee,

     

    

     

    

     

    

     

    By:_______________________________

    Authorized
      Signatory

     

    

     

    Date:
      September 28, 2006

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    

     

    A-4-5

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    ABBREVIATIONS

    

    The
      following abbreviations, when used in the inscription on the face of this
      certificate, shall be construed as though they were written out in full
      according to applicable laws or regulations:

    

    TEN
      COM -
      as tenants in common

    TEN
      ENT -
      as tenants by the entireties

    JT
      TEN -
      as joint tenants with right of survivorship and not as tenants in
      common

    

    UNIF
      GIFT
      MIN ACT - _______________ Custodian ____________________

    (Cust)    (Minor)

    Under
      Uniform Gifts to Minors Act ___________________________________

    (State)

    

    Additional
      abbreviations may also be used though not in the above list.

    ______________________________________________________________________________

    

    FOR
      VALUE
      RECEIVED, the undersigned hereby sells, assigns and transfers unto

    

    PLEASE
      INSERT SOCIAL SECURITY OR OTHER IDENTIFYING NUMBER

    OF
      ASSIGNEE

    

    ________________________________________________________________

    ________________________________________________________________

    (Please
      print or typewrite name and address, including zip code, of
      assignee)

    

    ________________________________________________________________

    the
      within certificate, and all rights thereunder, hereby irrevocably constituting
      and appointing

    

    ________________________________________________________________

    attorney
      to transfer said certificate on the books of the Certificate Registrar with
      full
      power of substitution in the premises.

    

    Dated: ________________ __________________________

    

    Signature
      Guaranteed by:_________________________________________

    

    NOTICE:
      the signature to this assignment must correspond with the name as written upon
      the face of the within instrument in every particular, without alteration or
      enlargement or any change whatever, and must be guaranteed by a member of a
      Signature Guarantee Medallion Program.

    

    

    

    A-4-6

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    

    

    EXHIBIT
      B-1

    

    MORTGAGE
      LOAN SCHEDULE

    

    

    

    

    

    

    

    

    

    

    

    

    

    DEEMED
      INCORPORATED

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    B-1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXHIBIT
      B-2

    

    MORTGAGE
      LOAN SCHEDULE

    

    

    

    

    

    

    

    

    

    

    

    

    

    DEEMED
      INCORPORATED

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    B-2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXHIBIT
      C

     

    FORM
      OF MORTGAGE DOCUMENT CUTSODIAL AGREEMENT

     

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

     

    PARTIES

     

    
      	·  	
              U.S.
                Bank National Association,
                as trustee (the Trustee)

            

    

    
      	·  	
              Citibank
                (West), FSB,
                a
                federal savings bank (Citibank
                (West))

            

    

    
      	·  	
              Citicorp
                Mortgage Securities, Inc.,
                a Delaware corporation (CMSI)

            

    

    
      	·  	
              CitiMortgage,
                Inc.,
                as Servicer and Master Servicer (CitiMortgage)

            

    

     

    BACKGROUND

     

    The
      Trustee, CMSI,
      CitiMortgage
      and Citibank, N.A. are entering into a Pooling and Servicing Agreement dated
      September 1, 2006 relating to CMALT (CitiMortgage Alternative Loan Trust),
      Series 2006-A4 REMIC
      Pass-Through Certificates (the Pooling
      Agreement).
      Unless
      otherwise stated, terms defined in the Pooling Agreement are used in this
      agreement with the same meaning.

    Pursuant
      to the Pooling Agreement, 

    
      	·  	
              CMSI
                will sell to the Trustee, without recourse, the mortgage loans identified
                in exhibit B to the Pooling Agreement,
                and

            

    

    
      	·  	
              Citibank
                (West) has been designated as Mortgage Document Custodian and Mortgage
                Note Custodian.

            

    

     

    AGREEMENT

     

    1 Appointment
      as Custodian; Acknowledgment of Receipt 

    (a)
      Citibank (West) will serve as Mortgage Document Custodian and Mortgage Note
      Custodian (collectively, Custodian)
      under
      the Pooling Agreement. Citibank (West) certifies to the Trustee that Citibank
      (West) is qualified to serve as Mortgage Document Custodian and Mortgage Note
      Custodian under the Pooling Agreement. Citibank (West) will act as Custodian
      solely for the benefit of the Trustee and the certificate holders.

    (b)
      CMSI
      has
      delivered to Citibank (West), as Custodian, the Mortgage Files, including the
      Mortgage Notes referred to in section 2.1 of the Pooling Agreement. Citibank
      (West) acknowledges receipt of the Pooling Agreement and the Mortgage Files.
      

    From
      time
      to time, CitiMortgage will forward to Citibank (West) additional documents
      evidencing an assumption or modification of a mortgage loan, and Citibank (West)
      will hold such documents in the related Mortgage File in accordance with this
      agreement and the Pooling Agreement.

    (c)
      CitiMortgage
      will pay the reasonable custodial fees and expenses of Citibank (West) or its
      successor, including the Trustee if the Trustee holds any Mortgage Files
      directly as Custodian. 

    (d)
      Upon
      CitiMortgage’s receipt of notice from Citibank (West) or the Trustee that
      Citibank (West) has breached this agreement or the Pooling Agreement,
      CitiMortgage will cause Citibank (West) to comply with this agreement and the
      Pooling Agreement.

    

    C-1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

     

    2 Maintenance
      of office

    Citibank
      (West) will maintain the Mortgage Files, at the office of Citibank (West)
      located at Citibank (West), FSB, 5280 Corporate Drive, M/C 0005, Frederick,
      Md.
      21703, or at such other office of Citibank (West) as it designates by 30 days'
      prior written notice to the Trustee and CMSI.
      

     

    3 Duties
      of Custodian 

    As
      Custodian, Citibank (West) will have all of the rights and obligations of the
      Mortgage Document Custodian and Mortgage Note Custodian set forth in the Pooling
      Agreement, including but not limited to the following:

    (a) Safekeeping.
      Citibank (West) will 

    
      	·  	
              identify
                each Mortgage File by loan number, address of mortgaged property,
                and name
                of Mortgagor, 

            

    

    
      	·  	
              maintain
                the Mortgage Files in secure and fire resistant facilities in accordance
                with customary standards for such custody,

            

    

    
      	·  	
              identify
                the Mortgage Files as being held and to hold the Mortgage Files for
                and on
                behalf of the Trustee for the benefit of all present and future
                certificate holders, 

            

    

    
      	·  	
              maintain
                accurate records pertaining to Mortgages in the Mortgage Files as
                will
                enable the Trustee to comply with the terms and conditions of the
                Pooling
                Agreement, and

            

    

    
      	·  	
              maintain
                at all times a current inventory and conduct periodic physical inspections
                of the Mortgage Files in such a manner as will enable the Trustee
                and
                CitiMortgage to verify the accuracy of Citibank (West)’s record-keeping,
                inventory and physical possession. 

            

    

    Citibank
      (West) will promptly report to the Trustee and CitiMortgage any failure on
      its
      part to hold the Mortgage Files as herein provided and will promptly take
      appropriate action to remedy any such failure.

    (b) Release
      of Files.
      Citibank (West) is authorized, upon receipt of a direction from the Trustee
      pursuant to section 3.13, “Release of Mortgage Files,” of the Pooling Agreement,
      to release to CitiMortgage or its designee, as directed, the Mortgage File
      or
      the documents set forth in such direction. All documents so released will be
      held by the recipient in trust for the benefit of the Trustee in accordance
      with
      the Pooling Agreement. Such Mortgage Files will be returned to Citibank (West)
      when the need therefor in connection with foreclosure or servicing no longer
      exists, unless the mortgage loan is liquidated or paid in full. Citibank (West)
      is also authorized to release any Mortgage or Mortgage Note to CMSI
      after
      purchase by CMSI
      of the
      related mortgage loan or the property securing such mortgage loan, all as
      provided in, and subject to the provisions of, the Pooling
      Agreement.

    

    

    

    

    

    

    

    C-2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

    (c) Review
      of Mortgage Files; Administration; Reports.
      Citibank (West) will attend to all non-discretionary details in connection
      with
      maintaining custody of the Mortgage Files, including reviewing each Mortgage
      File within 90 days after issuance of the certificates, ascertaining that all
      documents required to be delivered pursuant to section 2.1, “Transfer of
      mortgage loans,” of the Pooling Agreement have been executed, received and
      recorded, if applicable, and, in connection therewith, delivering, in electronic
      form, such reports and certifications to the Trustee and CMSI
      as are
      required by the Pooling Agreement. If in the course of such review, or if at
      any
      time during the term of this agreement, Citibank (West) determines that a
      document or documents constituting part of a Mortgage File is defective or
      missing, it will promptly so notify, in electronic form, the Trustee and
      CitiMortgage in accordance with the provisions of section 2.3, “Repurchase or
      substitution of mortgage loans,” of the Pooling Agreement, and will, within 30
      days thereafter, provide the Trustee with an updated report certifying as to
      the
      completeness of the Mortgage File, with any applicable exceptions noted thereon.
      Citibank (West) will assist the Trustee and CitiMortgage generally in the
      preparation of reports (including by providing information reasonably requested
      as necessary to such preparation) to certificate holders or to regulatory bodies
      to the extent necessitated by Citibank (West)'s custody of the Mortgage
      Files.

    (d) Successor
      trustees.
      Citibank (West) will, in accordance with section 8.8. “Successor trustee,” of
      the Pooling Agreement, amend this agreement to make a successor Trustee the
      successor to the predecessor Trustee under this agreement.

     

    4 Access
      to Records

    Subject
      to section 3(b), upon not less than three days’ notice, Citibank (West) will
      permit the Trustee, CitiMortgage or any Subservicer appointed by CitiMortgage
      or
      their duly authorized representatives, attorneys or auditors to inspect the
      Mortgage Files and the books and records maintained by Citibank (West) pursuant
      hereto at such times as the Trustee, CitiMortgage or any Subservicer may
      reasonably request, subject only to compliance by the Trustee, CitiMortgage
      or
      any Subservicer with the security procedures of Citibank (West) applied by
      Citibank (West) to its own employees having access to these and similar
      records.

     

    5 Instructions;
      Authority to Act

    Citibank
      (West) will be deemed to have received proper instructions with respect to
      the
      Mortgage Files upon its receipt of written instructions signed by a Responsible
      Officer of the Trustee or a Servicing Officer of the Servicer. A certified
      copy
      of a resolution of the Board of Directors of the Trustee may be accepted by
      Citibank (West) as conclusive evidence of the authority of any such officer
      to
      act and may be considered as in full force and effect until receipt of written
      notice to the contrary by Citibank (West) from the Trustee, CitiMortgage or
      any
      Subservicer. Such instructions may be general or specific in terms. Citibank
      (West) may rely upon and will be protected in acting in good faith upon any
      such
      written instructions received by it and which it reasonably believes to be
      genuine and duly authorized with respect to all matters pertaining to this
      agreement and its duties hereunder.

    

    

    C-3

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

     

    6 Indemnification
      

    (a)
      Citibank (West) will indemnify the Trustee for any and all liabilities,
      obligations, losses, damages, payments, costs or expenses of any kind whatsoever
      which may be imposed on, incurred or asserted against the Trustee as the result
      of any act or omission in any way relating to the maintenance and custody by
      Citibank (West) of the Mortgage Files; provided,
      however,
      that
      Citibank (West) will not be liable for any portion of any such amount resulting
      from the gross negligence or willful misconduct of the Trustee.

    (b) CitiMortgage
      will indemnify Citibank (West) and hold it harmless against any loss, liability
      or expense incurred without gross negligence or bad faith on Citibank (West)’s
      part, arising out of or in connection with the acceptance or administration
      of
      the trust or trusts created under the Pooling Agreement or Citibank (West)’s
      custody of the Mortgage Files, including the costs and expenses of defending
      itself against any claim or liability in connection with the exercise or
      performance of any of its powers or duties hereunder or under the Pooling
      Agreement. Such indemnification will survive the payment of the certificates
      and
      termination of the Trust Fund, as well as the resignation or removal of
      CitiMortgage as Servicer (if such action which caused the need for the
      indemnification occurred while CitiMortgage acted as Servicer), and for purposes
      of such indemnification neither the negligence nor bad faith of the Trustee
      will
      be imputed to, or adversely affect, the right of Citibank (West) to
      indemnification.

     

    7 Limitation
      of Custodian’s Liabilities and Duties

    (a) Citibank
      (West) will not be responsible for preparing or filing any reports or returns
      relating to federal, state or local income taxes with respect to this agreement,
      other than for Citibank (West)’s compensation or for reimbursement of
      expenses.

    (b) Citibank
      (West) will not be responsible or liable for, and makes no representation or
      warranty with respect to, the validity, adequacy or perfection of any lien
      upon
      or security interest in any Mortgage File.

    (c) Any
      other
      provision of this agreement to the contrary notwithstanding, Citibank (West)
      will have no notice, and will not be bound by any of the terms and conditions
      of
      any other document or agreement executed or delivered in connection with, or
      intended to control any part of, the transactions anticipated by or referred
      to
      in this agreement unless Citibank (West) is a signatory party to that document
      or agreement. Notwithstanding the foregoing sentence, Citibank (West) will
      be
      deemed to have notice of the terms and conditions (including without limitation
      definitions not otherwise set forth in full in this agreement) of other
      documents and agreements executed or delivered in connection with, or intended
      to control any part of, the transactions anticipated by or referred to in this
      agreement, to the extent such terms and provisions are referenced, or are
      incorporated by reference, into this agreement only as long as the Trustee
      or
      CitiMortgage will have provided a copy of any such document or agreement to
      Citibank (West).

    (d) Citibank
      (West)’s rights and obligations will only be such as are expressly set forth in
      this agreement or the Pooling Agreement. In no event will Citibank (West) be
      obligated to ascertain or take action except as expressly provided in this
      agreement or the Pooling Agreement.

    

    

    C-4

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

    (e) Nothing
      in this agreement will be deemed to impose on Citibank (West) any obligation
      to
      qualify to do business in any jurisdiction, other than (i) a jurisdiction
      where a Mortgage File is or may be held by Citibank (West), and (ii) where
      failure to qualify could have a material adverse effect on Citibank (West)
      or
      its property or business or on the ability of Citibank (West) to perform it
      duties hereunder.

    (f) Subject
      to section 3, under no circumstances will Citibank (West) be obligated to verify
      the authenticity of any signature on any of the documents received or examined
      by it in connection with this agreement or the authority or capacity of any
      person to execute or issue such document, nor will Citibank (West) be
      responsible for the value, form, substance, validity, perfection (other than
      by
      taking and continuing possession of the Mortgage Files), priority, effectiveness
      or enforceability of any of such documents, nor will Citibank (West) be under
      a
      duty to inspect, review or examine the documents to determine whether they
      are
      appropriate for the represented purpose or that they have been actually recorded
      or that they are other than what they purport to be on their face.

    (g) Citibank
      (West) will have no duty to ascertain whether or not any cash amount or payment
      has been received by the Trustee, the CMSI
      or any
      third person.

    (h) Citibank
      (West) may assign its rights and obligations under this agreement , in whole
      or
      in part, to any Affiliate; however, Citibank (West) will notify CMSI,
      CitiMortgage
      and the Trustee of any such assignment. Citibank (West) may not assign its
      rights or obligations under this agreement, in whole or in part, to any other
      entity without the prior written consent of CMSI,
      CitiMortgage and the Trustee, which consent will not be unreasonably withheld.
      An "Affiliate" is an entity that directly or indirectly controls, is controlled
      by or is under common control with Citibank (West). Notwithstanding any such
      assignment, Citibank (West) will remain liable for all of its obligations under
      this agreement unless the assignment has been approved by CMSI,
      CitiMortgage and the Trustee.

    (i) Subject
      to section 6, “Indemnification,” neither Citibank (West) nor any of its
      Affiliates, directors, officers, agents, and employees will be liable
      for

    
      	·  	
              any
                action or omission to act hereunder except for its own or such person’s
                gross negligence, willful misconduct, breach of this agreement or
                violation of applicable law, or

            

    

    
      	·  	
              any
                special, indirect, punitive or consequential damages resulting from
                any
                action taken or omitted to be taken by it or them hereunder or in
                connection herewith even if advised of the possibility of such
                damages.

            

    

    (j) Citibank
      (West) will not be required to expend or risk its own funds or otherwise incur
      any financial liability in the performance of any of its duties under this
      Agreement or the Pooling Agreement or in the exercise of any of its rights
      and
      obligations, if, in its sole judgment, it will believe that repayment of such
      funds or adequate indemnity against such risk or liability is not assured to
      it.

    (k) Citibank
      (West) will not be responsible for delays or failures in performance resulting
      from acts beyond its control, such as acts of God, strikes, lockouts, riots,
      acts of war or terrorism, epidemics, nationalization, expropriation, currency
      restrictions, governmental regulations superimposed after the fact, fire,
      communication line failures, computer viruses, power failures, earthquakes
      or
      other disasters.

    

    C-5

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

    (l) Any
      entity into which Citibank (West) may be merged or converted or with which
      it
      may be consolidated, or any entity resulting from any merger, conversion or
      consolidation to which Citibank (West) will be a party, or any entity succeeding
      to the business of Citibank (West), will be the successor of Citibank (West)
      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.

     

    8. Advice
      of Counsel 

    Citibank
      (West) may rely and act upon advice of counsel with respect to its performance
      as Custodian, and will not be liable for any action it reasonably takes pursuant
      to such advice, provided that such action is not in violation of applicable
      federal or state law.

     

    9. Effective
      Period, Termination and Amendment, and Interpretive and Additional Provisions
      

    This
      agreement may be terminated (a) by Citibank (West)’s resignation as
      Custodian, or (b) by either CitiMortgage or the Trustee. In each case, such
      termination will be effected by notice to the other parties given no less than
      60 days prior to termination. Upon notice of such termination, CitiMortgage
      will
      use its reasonable best efforts to select a successor Custodian reasonably
      acceptable to the Trustee upon substantially the same terms and conditions
      as
      set forth in this agreement. If no such successor Custodian has been selected
      by
      the 50th day
      after
      such notice, the Trustee may, upon prior notice to CitiMortgage, select a
      successor Custodian. If no successor Custodian has been selected by
      CitiMortgage or
      the
      Trustee by the effective date of the Citibank (West)’s termination, the Trustee
      will act as successor Custodian until the Trustee and CitiMortgage agree
      on
      a successor Custodian. 

    At,
      or as
      soon as practicable after, the termination of this agreement, Citibank (West)
      will deliver the Mortgage Files to the successor Custodian at such place as
      the
      successor Custodian reasonably designates. 

     

    10. Binding
      Arbitration 

    Any
      misunderstanding or dispute between Citibank (West) and CMSI
      or
      CitiMortgage arising
      out of this agreement will be settled through consultation and negotiation
      in
      good faith and a spirit of mutual cooperation. However, if these attempts fail,
      such misunderstandings or disputes will be decided by binding arbitration
      conducted, upon request by either of them, in New York, New York, before a
      single arbitrator designated by the American Arbitration Association (the
AAA),
      in
      accordance with the terms of the Commercial Arbitration Rules of the
AAA,
      and to
      the maximum extent applicable, the United States Arbitration Act (Title 9 of
      the
      United States Code). Notwithstanding anything herein to the contrary, either
      Citibank (West), CMSI
      or
      CitiMortgage may
      proceed to a court of competent jurisdiction to obtain equitable relief at
      any
      time. An arbitrator may not award punitive damages or other damages not measured
      by the prevailing party’s actual damages. To the maximum extent practicable, an
      arbitration proceeding under this agreement will be concluded within 180 days
      of
      the filing of the dispute with the AAA.
      This
      arbitration clause will survive any termination or expiration of this agreement
      and if any term, covenant, condition or provision of this arbitration clause
      is
      found to be unlawful, invalid or unenforceable, the remaining parts of the
      arbitration clause will not be affected thereby and will remain fully
      enforceable.

    

    C-6

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

     

    11. Governing
      Law 

    This
      agreement will be governed by, and construed in accordance with, the laws of
      the
      State of New York.

     

    12. Notice
      

    Notices
      and other writings will be delivered or mailed, postage prepaid, 

    
      	·  	
              to
                the Trustee at One Federal Street, 3rd Floor, Boston, Massachusetts
                02110,
                Attention: Corporate Trust Services,

            

    

    
      	·  	
              to
                Citibank (West) at 5280 Corporate Drive, M/C 0005, Frederick, Maryland
                21703, Attention: Loretta Badgett, with a copy to Eric K. Kawamura,
                Vice
                President & General Counsel, Citibank (West), FSB, One Sansome St.,
                19th fl., San Francisco, California 94104, tel: (415) 658-4371, fax:
                (415)
                658-4294, and

            

    

    
      	·  	
              to
                CMSI
                or
                CitiMortgage at 1000 Technology Drive, O’Fallon, Missouri 63368,
                Attention: Daniel P. Hoffman,

            

    

    or
      to
      such other address as the Trustee, Citibank (West), CMSI
      or
      CitiMortgage subsequently specifies in writing to the other parties. Notices
      or
      other writings will be effective only upon receipt.

     

    13. Binding
      Effect

    This
      agreement will be binding upon and will inure to the benefit of the Trustee
      and
      Citibank (West) and their respective successors and permitted assigns.
      Concurrently with the appointment of a successor trustee as provided in section
      8.8 of the Pooling Agreement, the Trustee, CMSI,
      CitiMortgage
      and Citibank (West) will amend this agreement to make the successor trustee
      the
      successor to the Trustee under this agreement.

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    C-7

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    MORTGAGE
      DOCUMENT CUSTODIAL AGREEMENT

    September
      1, 2006

    

    SIGNATURES

    

    

    U.S.
      BANK
      NATIONAL ASSOCIATION,

    as
      Trustee under the Pooling Agreement

    

    

    By:_______________________________

    Name:

    Title:

    

    

    CITIBANK
      (WEST), FSB,

    as
      Custodian

    

    

    By:_______________________________

    Name:

    Title:

    

    

    CITICORP
      MORTGAGE SECURITIES, INC.

    

    

    By:_______________________________

    Name: Daniel
      P.
      Hoffman

    Title: President

    

    

    CITIMORTGAGE,
      INC.

    

    

    By:_______________________________

    Name: Jeffrey
      K. Sarni

    Title: Vice
      President

    

    

    

    

    

    C-8

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXHIBIT
      D

    FORM
      OF PURCHASER LETTER

     

    

    [Purchaser]

    [Date]

    Citicorp
      Mortgage Securities, Inc.

    1000
      Technology Drive

    O’Fallon,
      Missouri 63368

    

    Citibank,
      N.A.

    Agency
      & Trust

    111
      Wall
      Street, 15th Floor

    New
      York,
      New York 10005

    Attn:
      Securities Window

    

    Ladies
      and Gentlemen:

    

    In
      connection with the purchase by us of $_____________________ initial
      principal balance of the CMALT (CitiMortgage Alternative Loan Trust), Series
      2006-A4 REMIC Pass-Through Certificates class B-[4][5][6] certificates, we
      confirm that:

    

    1.
      We
      understand that the class B-[4][5][6] certificates are not being registered
      under the Securities Act of 1933, as amended (the "Securities Act") or any
      state
      securities or "blue sky" laws and are being transferred to us in a transaction
      that is exempt from the registration requirements of the Securities Act and
      any
      such laws.

    

    2.
      We
      (check one)

    

    [_]
      have
      such knowledge and experience in financial and business matters as to be capable
      of evaluating the merits and risks of investment in the class B-[4][5][6]
      certificates, we are able to bear the economic risk of investment in the class
      B-[4][5][6] certificates and we are an accredited investor as defined in
      Regulation D under the Securities Act. We have such knowledge and experience
      in
      financial and business matters, specifically in the field of mortgage related
      securities, as to be able to evaluate the risk of purchasing a certificate
      which
      is subordinate in right of payment, and we have direct, personal and significant
      experience in making investments in mortgage related securities. If we are
      non-institutional investors, our net worth (exclusive of our primary residence)
      is at least $1,000,000.

    

    [_]
      are
      "Qualified Institutional Buyers" within the meaning of Rule 144A promulgated
      under the Securities Act.

    

    3.
      We
      will acquire the class B-[4][5][6] certificates for our own account or for
      accounts as to which we exercise sole investment discretion and not with a
      view
      to any distribution of the class B-[4][5][6] certificates, subject,
      nevertheless, to the understanding that disposition of our property shall at
      all
      times be and remain within our control.

    

    4.
      We
      agree that our class B-[4][5][6] certificates must be held indefinitely by
      us
      unless subsequently registered under the Securities Act and any applicable
      state
      securities or "blue sky" laws or unless exemptions from the registration
      requirements of the Securities Act and such laws are available.

    

    D-1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    5.
      We
      agree that in the event that at some future time we wish to sell, dispose of
      or
      otherwise transfer any of our class B-[4][5][6] certificates, we will not
      transfer any of such class B-[4][5][6] certificates unless:

    

    (A)
      (1)
      the transfer is made to an Eligible Purchaser (as defined below), (2) a letter
      to substantially the same effect as this letter is executed promptly by such
      Eligible Purchaser or by an Eligible Dealer (as defined below) on behalf of
      such
      Eligible Purchaser and (3) all offers or solicitations in connection with the
      sale (if a sale), whether directly or through any agent on our behalf, are
      limited only to Eligible Purchasers and are not made by means of any form of
      general solicitation or general advertising whatsoever; or

    

    (B)
      Such
      class B-[4][5][6] certificates are otherwise sold in a transaction that does
      not
      require registration under the Securities Act.

    

    "Eligible
      Purchaser" means an Eligible Dealer or a corporation, partnership or other
      entity which we have reasonable grounds to believe and do believe can make
      representations with respect to itself to substantially the same effect as
      the
      representations set forth herein; "Eligible Dealer" means any corporation or
      other entity having as a principal business acting as a broker or dealer in
      securities.

    

    6.
      We
      understand that each of the class B-[4][5][6] certificates will bear a legend
      to
      substantially the following effect:

    

    This
      class B-[4][5][6] certificate is subordinated in right of payments to the class
      A, B-1, B-2 [,][and] B-3 [,][and] [B-4] [and B-5] certificates, as described
      in
      the Pooling Agreement referred to herein. This certificate has not been
      registered under the Securities Act of 1933, as amended, and may not be sold,
      or
      offered for sale, transferred or otherwise disposed of unless such sale,
      transfer or other disposition is made pursuant to an effective registration
      statement under such act and any applicable blue sky law or unless an exemption
      under such act and any applicable blue sky law is available.

    

    This
      certificate may not be purchased by or transferred to any person that is an
      employee benefit plan subject to Title I of the Employee Retirement Income
      Security Act of 1974, as amended (“ERISA”) or Section 4975 of the Internal
      Revenue Code of 1986, as amended (the “Code”) or any Governmental Plan, as
      defined in Section 3(32) of ERISA, subject to any federal, state or local law
      which is, to a material extent, similar to the foregoing provisions of ERISA
      or
      the Code (collectively, a “Plan”) or any person investing the assets of a Plan
      except as provided in section 5.2 of the Pooling Agreement referred to
      herein.

    

    Very
      truly yours,

    

    [Name
      of
      Purchaser]

    

    

    By:*_____________________

    Name:

    Title:

    ___________________

    *
      This
      letter may be signed by Purchaser's attorney-in-fact if an executed power of
      attorney to such attorney-in-fact is attached hereto; provided that, upon
      written instruction from the Issuer to the Trustee, no such attachment shall
      be
      required. 

    

    

    D-2

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXHIBIT
      E

    FORM
      OF ERISA LETTER

     

    

    [Purchaser]

    [Date]

    

    Citicorp
      Mortgage Securities, Inc.

    1000
      Technology Drive

    O’Fallon,
      Missouri 63368

    

    Citibank,
      N.A.

    Agency
      & Trust

    111
      Wall
      Street, 15th Floor

    New
      York,
      New York 10005

    Attn:
      Securities Window

    

    

    Ladies
      and Gentlemen:

    

    In
      connection with the purchase by us of $_______________ initial principal balance
      of the CMALT (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC
      Pass-Through Certificates class B-[4][5][6] certificates we confirm
      that:

    

    We
      (check
      one)

    

    [_]
      are
      not an employee benefit plan subject to the fiduciary responsibility provisions
      of the Employee Retirement Income Security Act of 1974, as amended ("ERISA")
      or
      Section 4975 of the Internal Revenue Code of 1986, as amended (the "Code")
      or
      any governmental plan, as defined in Section 3(32) of ERISA, subject to any
      federal, state or local law ("Similar Law") which is, to a material extent,
      similar to the foregoing provisions of ERISA or the Code (collectively, a
      "Plan"), an agent acting on behalf of a Plan, or a person utilizing the assets
      of a Plan or

    

    [_]
      are
      an insurance company and the source of funds used to purchase the certificates
      is an "insurance company general account" (as such term is defined in Section
      V
      (e) of Prohibited Transaction Class Exemption 95-60 ("PTE 95-60"), 60 Fed.
      Reg.
      35925 July 12, 1995) and there is no plan with respect to which the amount
      of
      such general account's reserves and liabilities for the contract (s) held by
      or
      on behalf of such Plan and all other plans maintained by the same employer
      (or
      affiliate thereof as defined in Section V(a)(1) of PTE 95-60) or by the same
      employee organization, exceed 10% of the total of all reserves and liabilities
      of such general account (as such amounts are determined under Section I (a)
      of
      PTE 95-60) at the date of acquisition or

    

    

    E-1

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    

    [_]
      have
      provided a "Benefit Plan Opinion" satisfactory to Citicorp Mortgage Securities,
      Inc. and the Trustee of the trust fund. A Benefit Plan Opinion is an opinion
      of
      counsel to the effect that the proposed transfer will not (a) cause the assets
      of the trust fund to be regarded as "plan assets" and subject to the fiduciary
      responsibility provisions of ERISA or the prohibited transaction provisions
      of
      the Code or Similar Law, (b) give rise to a fiduciary duty under ERISA, Section
      4975 of the Code or Similar Law on the part of Citicorp Mortgage Securities,
      Inc., the Servicer or the Trustee with respect to any Plan, or (c) constitute
      a
      prohibited transaction under ERISA or Section 4975 of the Code or Similar
      Law.

    

    [The
      certificates will be registered in the name of [Nominee Name] but the
      undersigned will be the beneficial owner thereof.]

    

    

    

    Very
      truly yours,

    

    [Name
      of
      Purchaser]

    

    

    

    By:*________________________

    Name:

    Title:

    ____________________

    *
      This
      letter may be signed by Purchaser's attorney-in-fact if an executed power of
      attorney to such attorney-in-fact is attached hereto; provided that, upon
      written instruction from the Issuer to the Trustee, no such attachment shall
      be
      required.

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    

    E-2

     

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    
       

      EXHIBIT
        F

      FORM
        OF YIELD MAINTENANCE AGREEMENT

       

      

        [BNY
          LOGO]

        

        

        Dated:
          September 19, 2006

        

        Rate
          Cap Transaction

        

        Re:
          BNY
          Reference No. 38357

        

        Ladies
          and Gentlemen:

        

        The
          purpose of this letter agreement (“Agreement”)
          is to
          confirm the terms and conditions of the rate Cap Transaction entered into
          on the
          Trade Date specified below (the “Transaction”)
          between The Bank of New York (“BNY”),
          a
          trust company duly organized and existing under the laws of the State of
          New
          York, and U.S. Bank National Association,
          not in
          its individual capacity, but solely as trustee (in such capacity, the
“Trustee”)
          under
          the Pooling and Servicing Agreement, dated as of September 1, 2006, among
          Citicorp Mortgage Securities, Inc., as depositor (the “Depositor”),
          CitiMortgage, Inc., as servicer (the “Servicer”)
          and
          master servicer (the “Master
          Servicer”),
          Citibank, N.A., as paying agent, certificate registrar and authenticating
          agent
          and the Trustee (the “Pooling
          and Servicing Agreement”).
          CMALT
          (CitiMortgage Alternative Loan Trust), Series 2006-A4 (the “Issuing Entity”) is
          referred to herein as the “Counterparty”. This
          Agreement, which evidences a complete and binding agreement between you
          and us
          to enter into the Transaction on the terms set forth below, constitutes
          a
“Confirmation”
as
          referred to in the “ISDA
          Form Master Agreement”
(as
          defined below), as well as a “Schedule” as referred to in the ISDA Form Master
          Agreement.

        

        1. Form
          of Agreement.
          This
          Agreement is subject to the 2000
          ISDA Definitions (the
          “Definitions”),
          as
          published by the International Swaps and Derivatives Association, Inc.
          (“ISDA”).
          You
          and we have agreed to enter into this Agreement in lieu of negotiating
          a
          Schedule to the 1992 ISDA Master Agreement (Multicurrency—Cross Border) form
          (the “ISDA
          Form Master Agreement”).
          An
          ISDA Form Master Agreement, as modified by the Schedule terms in Paragraph
          4 of
          this Confirmation (the “Master
          Agreement”),
          shall
          be deemed to have been executed by you and us on the date we entered into
          the
          Transaction. Except as otherwise specified, references herein to Sections
          shall
          be to Sections of the ISDA Form Master Agreement and the Master Agreement,
          and
          references to Paragraphs shall be to paragraphs of this Agreement. In the
          event
          of any inconsistency between the provisions of this Agreement and the
          Definitions or the ISDA Form Master Agreement, this Agreement shall prevail
          for
          purposes of the Transaction. Capitalized terms not otherwise defined herein
          or
          in the Definitions or the Master Agreement shall have the meaning defined
          for
          such term in the Pooling and Servicing Agreement.

        

        
          	
                  2.

                	
                  Certain
                    Terms.
                    The terms of the particular Transaction to which this Confirmation
                    relates
                    are as follows:

                

        

        

        Type
          of
          Transaction:  Rate
          Cap

        
          
            Ref
              No.
              38357

            
            

          

          
            F-1

            
              

            

          

          
            
            

          

        

        

        

        Notional
          Amount: With
          respect to any Calculation Period the amount set forth for such period
          on
          Schedule I attached hereto. 

        

        Trade
          Date:   September
          19, 2006

        

        Effective
          Date:  September
          28, 2006

        

        Termination
          Date: May
          25,
          2010, subject to adjustment in accordance with the Following Business Day
          Convention.

        

        FIXED
          AMOUNTS

        

        Fixed
          Amount Payer:  Counterparty

        

        Fixed
          Amount:  USD
          257,000.00

        

        Fixed
          Amount Payer 

        Payment
          Date:   September
          28, 2006

        

        

        FLOATING
          AMOUNTS

        

        Floating
          Rate Payer:  BNY

        

        Cap
          Rate: 5.35%

        

        Floating
          Rate for initial

        Calculation
          Period:  To
          be
          determined

        

        Floating
          Rate Day Count

        Fraction:   30/360

        

        Floating
          Rate Option: USD-LIBOR-BBA,
          provided, however, if the Floating Rate Option for a Calculation Period
          is
          greater than 8.85% then the Floating Rate Option for such Calculation Period
          shall be deemed equal to 8.85%.

        

        Designated
          Maturity:  One
          month

        

        Spread:   Inapplicable

        

        Floating
          Rate Payer

        Period
          End Dates: The
          25th
          day of
          each month, beginning on October 25, 2006 and ending on the Termination
          Date
          with No Adjustment

        

        Floating
          Rate Payer

        Payment
          Dates: Early
          Payment shall be applicable. The Floating Rate Payer Payment Date shall
          be one
          (1) Business Day preceding each Floating Rate Payer Period End
          Date.

        
          
            Ref
              No.
              38357

            
            

          

          
            F-2

            
              

            

          

          
            
            

          

        

        

        

        Reset
          Dates: The
          first
          day of each Calculation Period

        

        Compounding:  Inapplicable

        

        Business
          Days for Payments

        By
          both
          parties:  New
          York

        

        Calculation
          Agent:  BNY

        

        3. Additional
          Provisions:
          

        

        1) Reliance.
          Each
          party hereto is hereby advised and acknowledges that the other party has
          engaged
          in (or refrained from engaging in) substantial financial transactions and
          has
          taken (or refrained from taking) other material actions in reliance upon
          the
          entry by the parties into the Transaction being entered into on the terms
          and
          conditions set forth herein. 

        

        2) Transfer,
          Amendment and Assignment.
          No
          transfer, amendment, waiver, supplement, assignment or other modification
          of
          this Transaction shall be permitted by either party unless each of Standard
          & Poor’s Ratings Service, a division of The McGraw-Hill Companies, Inc
          (“S&P”),
          Fitch
          Ratings (“Fitch”) and Moody’s Investors Service, Inc. (“Moody’s”),
          has
          been provided notice of the same and confirms in writing (including by
          facsimile
          transmission) that it will not downgrade, qualify, withdraw or otherwise
          modify
          its then-current ratings on the Class IA-5 Certificates issued under the
          Pooling
          and Servicing Agreement (the “Certificates”).

        

        
          	
                  4.

                	
                  Provisions
                    Deemed Incorporated in a Schedule to the Master
                    Agreement:

                

        

        

        
          	 	
                  1)

                	
                  No
                    Netting Between Transactions.
                    The parties agree that subparagraph (ii) of Section 2(c) will
                    apply to any
                    Transaction.

                

        

        

        
          	 	
                  2)

                	
                  Termination
                    Provisions.
                    Subject to the provisions of Paragraph 4(10) below, for purposes
                    of the
                    Master Agreement:

                

        

        

        
          	 	
                  (a)

                	
                  “Specified
                    Entity”
                    is not applicable to BNY or the Counterparty for any purpose.
                    

                

        

        

        
          	 	
                  (b)

                	
                  The
                    “Breach
                    of Agreement”
                    provision of Section 5(a)(ii) will not apply to BNY or the
                    Counterparty.

                

        

        

        
          	 	
                  (c)

                	
                  The
                    “Credit
                    Support Default”
                    provisions of Section 5(a)(iii) will not apply to BNY (except
                    with respect
                    to credit support furnished pursuant to Paragraph 4 9) below
                    or the
                    Counterparty.

                

        

        

        
          	 	
                  (d)

                	
                  The
                    “Misrepresentation”
                    provisions of Section 5(a)(iv) will not apply to BNY or the
                    Counterparty.

                

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-3

            
              

            

          

          
            
            

          

        

        

        
          	 	
                  (e)

                	
                  “Default
                    under Specified Transaction”
                    is not applicable to BNY or the Counterparty for any purpose,
                    and,
                    accordingly, Section 5(a)(v) shall not apply to BNY or the
                    Counterparty.

                

        

        

        
          	 	
                  (f)

                	
                  The
                    “Cross
                    Default”
                    provisions of Section 5(a)(vi) will not apply to BNY or to the
                    Counterparty.

                

        

        

        
          	 	
                  (g)

                	
                  The
                    “Bankruptcy”
                    provisions of Section 5(a)(vii)(2) will not apply to the Counterparty;
                    the
                    words “trustee” and “custodian” in Section 5(a)(vii)(6) will not include
                    the Trustee; and the words “specifically authorized ” are inserted before
                    the word “action” in Section
                    5(a)(vii)(9).

                

        

        

        
          	 	
                  (h)

                	
                  The
                    “Credit
                    Event Upon Merger”
                    provisions of Section 5(b)(iv) will not apply to BNY or the
                    Counterparty.

                

        

        

        
          	 	
                  (i)

                	
                  The
                    “Automatic
                    Early Termination”
                    provision of Section 6(a) will not apply to BNY or to the
                    Counterparty.

                

        

        

        
          	 	
                  (j)

                	
                  Payments
                    on Early Termination.
                    For the purpose of Section 6(e):

                

        

        

        (i) Market
          Quotation will apply.

         

        (ii) The
          Second Method will apply. 

        

        
          	 	
                  (k)

                	
                  “Termination
                    Currency”
                    means United States Dollars. 

                

        

        

        
          	 	
                  (l)

                	
                  No
                    Additional Amounts Payable by Counterparty.
                    The Counterparty shall not be required to pay any additional
                    amounts
                    pursuant to Section 2(d)(i)(4) or
                    2(d)(ii).

                

        

        

        3) Tax
          Representations. 

        

        
          	 	
                  (a)

                	
                  Payer
                    Representations.
                    For the purpose of Section 3(e), BNY and the Counterparty make
                    the
                    following representations:

                

        

        

        It
          is not
          required by any applicable law, as modified by the practice of any relevant
          governmental revenue authority, of any Relevant Jurisdiction to make any
          deduction or withholding for or on account of any Tax from any payment
          (other
          than interest under Section 2(e), 6(d)(ii) or 6(e)) to be made by it to
          the
          other party under this Agreement. In making this representation, it may
          rely on:

        

        
          	 	
                  (i)

                	
                  the
                    accuracy of any representations made by the other party pursuant
                    to
                    Section 3(f);

                

        

        

        
          	 	
                  (ii)

                	
                  the
                    satisfaction of the agreement contained in Section 4 (a)(i) or
                    4(a)(iii)
                    and the accuracy and effectiveness of any document
                    

                

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-4

            
              

            

          

          
            
            

          

        

        provided
          by the other party pursuant to Section 4 (a)(i) or 4(a)(iii); and

        

        
          	 	
                  (iii)

                	
                  the
                    satisfaction of the agreement of the other party contained in
                    Section
                    4(d), provided that it shall not be a breach of this representation
                    where
                    reliance is placed on clause (ii) and the other party does not
                    deliver a
                    form or document under Section 4(a)(iii) by reason of material
                    prejudice
                    of its legal or commercial position.

                

        

        

        
          	 	
                  (b)

                	
                  Payee
                    Representations.
                    For the purpose of Section 3(f), BNY and the Counterparty make
                    the
                    following representations.

                

        

         

        (i) The
          following representation will apply to BNY: 

        

        (x)
          It is
          a “U.S. person” (as that term is used in section 1.1441-4(a)(3)(ii) of the
          United States Treasury Regulations) for United States federal income tax
          purposes, (y) it is a trust company duly organized and existing under the
          laws
          of the State of New York, and (y) its U.S. taxpayer identification number
          is
          135160382. 

        

        (ii) The
          following representation will apply to the Counterparty:

        

        The
          beneficial owner of payments made to it under this Agreement is a “U.S. person”
(as that term is used in section 1.1441-4(a)(3)(ii) of United States Treasury
          Regulations) for United States federal income tax purposes.

        

        4) Documents
          to be delivered. For the purpose of Section 4(a):

        

        (a) Tax
          forms, documents or certificates to be delivered are:

        

        

        
          	
                   

                  Party
                    required to deliver document

                   

                	
                   

                  Form/Document/
                    Certificate

                   

                	
                   

                  Date
                    by which to be delivered

                	
                   

                  Covered
                    by Section 3(d) Representation

                   

                
	
                  BNY
                    and Counterparty

                   

                	
                   

                  Any
                    document required or
                    reasonably requested to allow the other party to make payments
                    under this
                    Agreement without any deduction or withholding for or on the
                    account of
                    any tax. 

                   

                	
                   

                  Upon
                    the execution and delivery of this Agreement 

                   

                	
                   

                  Yes

                   

                

        

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-5

            
              

            

          

          
            
            

          

        

        

        (b) Other
          documents to be delivered are:

        

        
          	
                   

                  Party
                    required to deliver document

                   

                	
                   

                  Form/Document/
                    Certificate

                   

                	
                   

                  Date
                    by which to be delivered

                   

                	
                   

                  Covered
                    by Section 3(d) Representation

                   

                
	
                   

                  BNY
                    

                   

                	
                   

                  A
                    certificate of an authorized officer of the party, as to the
                    incumbency
                    and authority of the respective officers of the party signing
                    this
                    Agreement, any relevant Credit Support Document, or any Confirmation,
                    as
                    the case may be.

                   

                	
                   

                  Upon
                    the execution and delivery of this Agreement 

                   

                	
                   

                  Yes

                   

                
	
                   

                  Counterparty
                    

                   

                	
                   

                  (i)
                    a copy of the executed Pooling and Servicing Agreement, and (ii)
                    an
                    incumbency certificate verifying the true signatures and authority
                    of the
                    person or persons signing this letter agreement on behalf of
                    the
                    Counterparty.

                   

                	
                   

                  Upon
                    the execution and delivery of this Agreement 

                   

                	
                   

                  Yes

                   

                
	
                   

                  BNY

                   

                	
                   

                  A
                    copy of the most recent publicly available regulatory call
                    report.

                   

                	
                   

                  Promptly
                    after request by the other party

                   

                	
                   

                  Yes

                   

                
	
                   

                  BNY

                   

                	
                   

                  Legal
                    Opinion as to enforceability of the Agreement.

                   

                	
                   

                  Upon
                    the execution and delivery of this Agreement.

                   

                	
                   

                  Yes

                   

                
	
                   

                  Counterparty

                   

                	
                   

                  Certified
                    copy of the Board of Directors resolution (or equivalent authorizing
                    documentation) which sets forth the authority of each signatory
                    to the
                    Confirmation signing on its behalf and the authority of such
                    party to
                    enter into Transactions contemplated and performance of its obligations
                    hereunder.

                   

                	
                   

                  Upon
                    the execution and delivery of this Agreement.

                   

                	
                   

                  Yes

                   

                

        

        

        5)
           Miscellaneous.
          

        

        
          	 	
                  (a)

                	
                  Address
                    for Notices:
                    For the purposes of Section 12(a):

                

        

        

        Address
          for notices or communications to BNY:

        

        The
          Bank
          of New York

        Swaps
          and
          Derivative Products Group

        Global
          Market Division

        32
          Old
          Slip 15th Floor

        New
          York,
          New York 10286

        Attention:
          Steve Lawler

        

        with
          a
          copy to:

        
          
            Ref
              No.
              38357

            
            

          

          
            F-6

            
              

            

          

          
            
            

          

        

        

        

        The
          Bank
          of New York

        Swaps
          and
          Derivative Products Group

        32
          Old
          Slip 16th Floor

        New
          York,
          New York 10286

        Attention:
          Andrew Schwartz

        Tele:
          212-804-5103

        Fax:
          212-804-5818/5837

        

        (For
          all
          purposes)

        

        Address
          for notices or communications to the Counterparty:

        

        U.S.
          Bank
          National Association

        One
          Federal Street, 3rd
          Floor

        Boston,
          Massachusetts 02110

        Tel:
          (617) 603-6402

        Fax:
          (617) 603-6637

        

        with
          a
          copy to

        

        Citibank
          Agency and Trust

        388
          Greenwich Street, 14th Floor

        New
          York,
          New York 10013

        Phone:
          (212) 816-5685

        Facsimile:
          (212) 816-5527

        

        (b) Process
          Agent.
          For the
          purpose of Section 13(c):

        

        BNY
          appoints as its Process Agent:  Not
          Applicable

         

        The
          Counterparty appoints as its Process Agent: Not
          Applicable

        

        
          	 	
                  (c)

                	
                  Offices.
                    The provisions of Section 10(a) will not apply to this Agreement;
                    neither
                    BNY nor the Counterparty have any Offices other than as set forth
                    in the
                    Notices Section and BNY agrees that, for purposes of Section
                    6(b), it
                    shall not in future have any Office other than one in the United
                    States.

                

        

        

        
          	 	
                  (d)

                	
                  Multibranch
                    Party.
                    For the purpose of Section 10(c):

                

        

        

        BNY
          is
          not a Multibranch Party.

         

        The
          Counterparty is not a Multibranch Party.

        

        
          	 	
                  (e)

                	
                  Calculation
                    Agent.
                    The Calculation Agent is BNY.

                

        

        

        (f) Credit
          Support Document. Not
          applicable for either BNY (except with respect to credit support furnished
          pursuant to Paragraph 9) or the Counterparty.

        
          
            Ref
              No.
              38357

            
            

          

          
            F-7

            
              

            

          

          
            
            

          

        

        

        

        
          	 	
                  (g)

                	
                  Credit
                    Support Provider.

                

        

        

        BNY: Not
          Applicable (except with respect to credit support furnished pursuant to
          Paragraph 9)

         

        
          	 	
                  Counterparty:

                	 	
                  Not
                    Applicable

                

        

        

        
          	 	
                  (h)

                	
                  Governing
                    Law.
                    The parties to this Agreement hereby agree that the law of the
                    State of
                    New York shall govern their rights and duties in whole, without
                    regard to
                    conflict of law provisions thereof other than New York General
                    Obligations
                    Law Sections 5-1401 and 5-1402.

                

        

        

        
          	 	
                  (i)

                	
                  Severability.
                    If
                    any term, provision, covenant, or condition of this Agreement,
                    or the
                    application thereof to any party or circumstance, shall be held
                    to be
                    invalid or unenforceable (in whole or in part) for any reason,
                    the
                    remaining terms, provisions, covenants, and conditions hereof
                    shall
                    continue in full force and effect as if this Agreement had been
                    executed
                    with the invalid or unenforceable portion eliminated, so long
                    as this
                    Agreement as so modified continues to express, without material
                    change,
                    the original intentions of the parties as to the subject matter
                    of this
                    Agreement and the deletion of such portion of this Agreement
                    will not
                    substantially impair the respective benefits or expectations
                    of the
                    parties. 

                

        

        

        The
          parties shall endeavor to engage in good faith negotiations to replace
          any
          invalid or unenforceable term, provision, covenant or condition with a
          valid or
          enforceable term, provision, covenant or condition, the economic effect
          of which
          comes as close as possible to that of the invalid or unenforceable term,
          provision, covenant or condition.

        

        
          	 	
                  (j)

                	
                  Recording
                    of Conversations.
                    Each party (i) consents to the recording of telephone conversations
                    between the trading, marketing and other relevant personnel of
                    the parties
                    in connection with this Agreement or any potential Transaction,
                    (ii)
                    agrees to obtain any necessary consent of, and give any necessary
                    notice
                    of such recording to, its relevant personnel and (iii) agrees,
                    to the
                    extent permitted by applicable law, that recordings may be submitted
                    in
                    evidence in any Proceedings.

                

        

        

        
          	 	
                  (k)

                	
                  Waiver
                    of Jury Trial.
                    Each party waives any right it may have to a trial by jury in
                    respect of
                    any Proceedings relating to this Agreement or any Credit Support
                    Document.
                    

                

        

        

        
          	 	
                  (l)
                    

                	
                  Non-Recourse.
                    Notwithstanding any provision herein or in the ISDA Form Master
                    Agreement
                    to the contrary, the obligations of the Counterparty hereunder
                    are limited
                    recourse obligations of the Counterparty, payable solely from
                    the Issuing
                    Entity and the proceeds thereof to satisfy the Counterparty's
                    obligations
                    hereunder. In the event that the Issuing
                    Entity

                

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-8

            
              

            

          

          
            
            

          

        

        and
          proceeds thereof should be insufficient to satisfy all claims outstanding
          and
          following the realization of the Issuing Entity and the distribution of
          the
          proceeds thereof in accordance with the Pooling and Servicing Agreement,
          any
          claims against or obligations of the Counterparty under the ISDA Form Master
          Agreement or any other confirmation thereunder, still outstanding shall
          be
          extinguished and thereafter not revive. This provision shall survive the
          expiration of this Agreement.

        

        
          	 	
                  (m)

                	
                  Limitation
                    on Institution of Bankruptcy Proceedings.
                    BNY shall not institute against or cause any other person to
                    institute
                    against, or join any other person in instituting against the
                    Counterparty,
                    any bankruptcy, reorganization, arrangement, insolvency or liquidation
                    proceedings, under any of the laws of the United States or any
                    other
                    jurisdiction, for a period of one year and one day (or, if longer,
                    the
                    applicable preference period) following indefeasible payment
                    in full of
                    the Certificates. This provision shall survive the expiration
                    of this
                    Agreement.

                

        

        

        
          	 	
                  (n)

                	
                  Remedy
                    of Failure to Pay or Deliver.
                    The ISDA Form Master Agreement is hereby amended by replacing
                    the word
                    “third” in the third line of Section 5(a)(i) by the word
                    “second”.

                

        

        

        
          	 	
                  (o)

                	
                  “Affiliate”
                    will have the meaning specified in Section 14 of the ISDA Form
                    Master
                    Agreement, provided that the Counterparty shall not be deemed
                    to have any
                    Affiliates for purposes of this Agreement, including for purposes
                    of
                    Section 6(b)(ii).

                

        

        

        
          	 	
                  (p)

                	
                  Trustee’s
                    Capacity.
                    It is expressly understood and agreed by the parties hereto that
                    insofar
                    as this Confirmation is executed by the Trustee
                    (i) this Confirmation is executed and delivered by U.S.
                    Bank National Association, not in its individual capacity but
                    solely as
                    Trustee
                    pursuant to the Pooling and Servicing Agreement in the exercise
                    of the
                    powers and authority conferred and vested in it thereunder and
                    pursuant to
                    instruction set forth therein (ii) each of the representations,
                    undertakings and agreements herein made on behalf of the trust
                    is made and
                    intended not as a personal representation, undertaking or agreement
                    of the
                    Trustee
                    but is made and intended for the purpose of binding only the
                    Counterparty,
                    and (iii) under no circumstances will U.S. Bank National Association,
                    in
                    its individual capacity be personally liable for the payment
                    of any
                    indebtedness or expenses or be personally liable for the breach
                    or failure
                    of any obligation, representation, warranty or covenant made
                    or undertaken
                    under this Confirmation and (iv) the parties hereto acknowledge
                    and agree
                    that under the Pooling and Servicing Agreement and in connection
                    with this
                    Agreement, Citibank, N.A., as Paying Agent under the Pooling
                    and Servicing
                    Agreement may act for the Counterparty hereunder, and BNY hereby
                    acknowledges and agrees that it will, unless otherwise directed
                    by the
                    Trustee under the Pooling and Servicing Agreement, make all
                    payments

                

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-9

            
              

            

          

          
            
            

          

        

        hereunder
          to, and otherwise deal directly with, the Paying Agent on behalf of the
          Counterparty. Any and all payments made by BNY to the paying Agent pursuant
          to
          this provision shall discharge in full BNY’s obligation to make payments to the
          Counterparty under the Agreement.

        

        
          	 	
                  (q)

                	
                  Trustee’s
                    Representation.
                    U.S. Bank National Association, as Trustee,
                    represents and warrants that:

                

        

        

        It
          has
          been directed under the Pooling and Servicing Agreement to enter into this
          letter agreement as Trustee
          on
          behalf of the Counterparty.

        

        
          	 	
                  (r)

                	
                  Amendment
                    to Pooling and Servicing Agreement.
                    Notwithstanding any provisions to the contrary in the Pooling
                    and
                    Servicing Agreement, none of the Depositor or the Trustee shall
                    enter into
                    any amendment thereto which could have a material adverse effect
                    on BNY
                    without the prior written consent of
                    BNY.

                

        

        

        
          	 	
                  6)

                	
                  Additional
                    Representations.
                    Section
                    3 is hereby amended, by substituting for the words “Section 3(f)” in the
                    introductory sentence thereof the words “Sections 3(f) and 3(i)” and by
                    adding, at the end thereof, the following Sections 3(g), 3(h)
                    and
                    3(i):

                

        

        

        
          	 	
                  “(g)

                	
                  Relationship
                    Between Parties.
                    

                

        

        

        
          	 	
                  (1)

                	
                  Nonreliance.
                    It
                    is not relying on any statement or representation of the other
                    party
                    regarding the Transaction (whether written or oral), other than
                    the
                    representations expressly made in this Agreement or the Confirmation
                    in
                    respect of that Transaction.

                

        

        

        (2) Evaluation
          and Understanding.
          

        

        
          	 	
                  (i)

                	
                  Each
                    Party acknowledges that U.S. Bank National Association has been
                    directed
                    under the Pooling and Servicing Agreement to enter into this
                    Transaction
                    as Trustee
                    on
                    behalf of the Counterparty.

                

        

        

        
          	 	
                  (ii)
                    

                	
                  It
                    is acting for its own account and has the capacity to evaluate
                    (internally
                    or through independent professional advice) the Transaction and
                    has made
                    its own decision to enter into the Transaction; it is not relying
                    on any
                    communication (written or oral) of the other party as investment
                    advice or
                    as a recommendation to enter into such transaction; it being
                    understood
                    that information and explanations related to the terms and conditions
                    of
                    such transaction shall not be considered investment advice or
                    a
                    recommendation to enter into such
                    transaction.

                

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-10

            
              

            

          

          
            
            

          

        

        No
          communication (written or oral) received from the other party shall be
          deemed to
          be an assurance or guarantee as to the expected results of the transaction;
          and

        

        
          	 	
                  (iii)

                	
                  It
                    understands the terms, conditions and risks of the Transaction
                    and is
                    willing and able to accept those terms and conditions and to
                    assume (and
                    does, in fact assume) those risks, financially and otherwise.
                    

                

        

        

        
          	 	
                  (3)

                	
                  Principal.
                    The
                    other party is not acting as a fiduciary or an advisor for it
                    in respect
                    of this Transaction.

                

        

        

        
          	 	
                  (h)

                	
                  Exclusion
                    from Commodities Exchange Act.
                    (A)
                    It is an “eligible contract participant” within the meaning of Section
                    1a(12) of the Commodity Exchange Act, as amended; (B) this Agreement
                    and
                    each Transaction is subject to individual negotiation by such
                    party; and
                    (C) neither this Agreement nor any Transaction will be executed
                    or traded
                    on a “trading facility” within the meaning of Section 1a(33) of the
                    Commodity Exchange Act, as amended.

                

        

        

        
          	 	
                  (i)

                	
                  ERISA
                    (Pension Plans).
                    It
                    is not a pension plan or employee benefits plan and it is not
                    using assets
                    of any such plan or assets deemed to be assets of such a plan
                    in
                    connection with this Transaction.

                

        

        

        
          	 	
                  7)

                	
                  Set-off.
                    Notwithstanding any provision of this Agreement or any other
                    existing or
                    future agreement (but without limiting the provisions of Section
                    2(c) and
                    Section 6, except as provided in the next sentence), each party
                    irrevocably waives any and all rights it may have to set off,
                    net, recoup
                    or otherwise withhold or suspend or condition payment or performance
                    of
                    any obligation between it and the other party hereunder against
                    any
                    obligation between it and the other party under any other agreements.
                    The
                    last sentence of the first paragraph of Section 6(e) shall not
                    apply for
                    purposes of this Transaction.

                

        

        

        
          	 	
                  8)

                	
                  Additional
                    Termination Events.
                    The following Additional Termination Events will apply, in
                    each case with respect to BNY as the sole Affected Party (unless
                    otherwise
                    provided below): 

                

        

         

        
          	 	
                  (i)

                	
                  Remedy
                    of Ratings Events. BNY
                    fails to comply with the provisions of Paragraph
                    9.

                

        

        

        
          	 	
                  (ii)

                	
                  Provision
                    of Information Required by Regulation AB.
                    BNY Fails to comply with the provisions of Section 4(12) below
                    within the
                    time provided for therein.

                

        

        

        9) Ratings
          Downgrade. For
          purposes of each Transaction:

         

        (i) Certain
          Definitions.

         

        
          
            Ref
              No.
              38357

            
            

          

          
            F-11

            
              

            

          

          
            
            

          

        

        

         

        (A) “Rating
          Agency Condition”
means,
          with respect to any particular proposed act or omission to act hereunder,
          that
          the Trustee shall have received prior written confirmation from each of
          the
          applicable Rating Agencies, and shall have provided notice thereof to BNY,
          that
          the proposed action or inaction would not cause a downgrade or withdrawal
          of
          their then-current ratings of the Certificates.

         

        (B) “Qualifying
          Ratings”
means,
          with respect to the debt of any assignee or guarantor under Paragraph 4(9)(ii)
          below, 

         

        (x) a
          short-term unsecured and unsubordinated debt rating of “P-1” (not on watch for
          downgrade), and a long-term unsecured and unsubordinated debt of ”A1” (not on
          watch for downgrade) (or, if it has no short-term unsecured and unsubordinated
          debt rating, a long term rating of “Aa3” (not on watch for downgrade) by
          Moody’s, 

         

        (y) a
          short-term unsecured and unsubordinated debt rating of “A-1” by S&P,
          and

         

        (z) a
          short-term unsecured and unsubordinated debt rating of “F-1” by
          Fitch.

         

        (C) A
          “Collateralization
          Event”
shall
          occur with respect to BNY (or any applicable credit support provider)
          if:

         

        (x) its
          short-term unsecured and unsubordinated debt rating is reduced to “P-1” (and is
          on watch for downgrade) or below, and its long-term unsecured and unsubordinated
          debt is reduced to ”A1” (and is on watch for downgrade) or below (or, if it has
          no short-term unsecured and unsubordinated debt rating, its long term rating
          is
          reduced to “Aa3” (and is on watch for downgrade) or below) by Moody’s,
          or

         

        (y) its
          short-term unsecured and unsubordinated debt rating is reduced below “A-1” by
          S&P; or

         

        (z) its
          short-term unsecured and unsubordinated debt rating is reduced below “F-1” by
          Fitch.

         

        (D) A
          “Ratings
          Event”
shall
          occur with respect to BNY (or any applicable credit support provider)
          if:

         

        (x) its
          short-term unsecured and unsubordinated debt rating is withdrawn or reduced
          to
“P-2” or below by Moody’s and its long-term unsecured and unsubordinated debt is
          reduced to “A3” or below (or, if it has no short-term unsecured and
          unsubordinated debt rating, its long term rating is reduced to “A2” or below) by
          Moody’s, or

         

        (y) its
          long-term unsecured and unsubordinated debt rating is withdrawn or reduced
          below
“BBB-” by S&P, or

         

        (z) its
          long-term unsecured and unsubordinated debt rating is withdrawn or reduced
          below
“BBB-” by Fitch.

         

        
          
            Ref
              No.
              38357

            
            

          

          
            F-12

            
              

            

          

          
            
            

          

        

        

         

        For
          purposes of (C) and (D) above, such events include those occurring in connection
          with a merger, consolidation or other similar transaction by BNY or any
          applicable credit support provider, but they shall be deemed not to occur
          if,
          within 30 days (or, in the case of a Ratings Event, 10 Business Days)
          thereafter, each of the applicable Rating Agencies has reconfirmed the
          ratings
          of the Certificates, as applicable, which were in effect immediately prior
          thereto. For the avoidance of doubt, a downgrade of the rating on the
          Certificates could occur in the event that BNY does not post sufficient
          collateral.

         

        (ii) Actions
          to be Taken Upon Occurrence of Event.
          Subject, in each case set forth in (A) and (B) below, to satisfaction of
          the
          Rating Agency Condition:

         

        (A) Collateralization
          Event.
          If a
          Collateralization Event occurs with respect to BNY (or any applicable credit
          support provider), then BNY shall, at its own expense, within thirty (30)
          days
          of such Collateralization Ratings Event:

         

        (1) post
          collateral under agreements and other instruments approved by the Counterparty,
          such approval not to be unreasonably withheld, which will be sufficient
          to
          restore the immediately prior ratings of the Certificates,

         

        (2) assign
          the Transaction to a third party, the ratings of the debt of which (or
          of the
          guarantor of which) meet or exceed the Qualifying Ratings, on terms
          substantially similar to this Confirmation, which party is approved by
          the
          Counterparty, such approval not to be unreasonably withheld,

         

        (3) obtain
          a
          guaranty of, or a contingent agreement of, another person, the ratings
          of the
          debt of which (or of the guarantor of which) meet or exceed the Qualifying
          Ratings, to honor BNY’s obligations under this Agreement, provided
          that
          such
          other person is approved by the Counterparty, such approval not to be
          unreasonably withheld, or

         

        (4) establish
          any other arrangement approved by the Counterparty, such approval not to
          be
          unreasonably withheld, which will be sufficient to restore the immediately
          prior
          ratings of their Certificates.

         

        (B) Ratings
          Event.
          If a
          Ratings Event occurs with respect to BNY (or any applicable credit support
          provider), then BNY shall, at its own expense, within ten (10) Business
          Days of
          such Ratings Event:

         

        (1) assign
          the Transaction to a third party, the ratings of the debt of which (or
          of the
          guarantor of which) meet or exceed the Qualifying Ratings, on terms
          substantially similar to this Confirmation, which party is approved by
          the
          Counterparty, such approval not to be unreasonably withheld,

         

        
          
            Ref
              No.
              38357

            
            

          

          
            F-13

            
              

            

          

          
            
            

          

        

        (2) obtain
          a
          guaranty of, or a contingent agreement of, another person, the ratings
          of the
          debt of which (or of the guarantor of which) meet or exceed the Qualifying
          Ratings, to honor BNY’s obligations under this Agreement, provided
          that
          such
          other person is approved by the Counterparty, such approval not to be
          unreasonably withheld, or

         

        (3) establish
          any other arrangement approved by the Counterparty, such approval not to
          be
          unreasonably withheld, which will be sufficient to restore the immediately
          prior
          ratings of the Certificates.

         

        

        
          	 	
                  10)

                	
                  Additional
                    Provisions.
                    Notwithstanding the terms of Sections 5 and 6 of the ISDA Form
                    Master
                    Agreement, if the Counterparty has satisfied its payment obligations
                    under
                    Section 2(a)(i) of the ISDA Form Master Agreement, and shall,
                    at the time,
                    have no future payment or delivery obligation, whether absolute
                    or
                    contingent, then unless BNY is required pursuant to appropriate
                    proceedings to return to the Counterparty or otherwise returns
                    to the
                    Counterparty upon demand of the Counterparty any portion of such
                    payment,
                    (a) the occurrence of an event described in Section 5(a) of the
                    ISDA Form
                    Master Agreement with respect to the Counterparty shall not constitute
                    an
                    Event of Default or Potential Event of Default with respect to
                    the
                    Counterparty as the Defaulting Party and (b) BNY shall be entitled
                    to
                    designate an Early Termination Date pursuant to Section 6 of
                    the ISDA Form
                    Master Agreement only as a result of a Termination Event set
                    forth in
                    either Section 5(b)(i) or Section 5(b)(ii) of the ISDA Form Master
                    Agreement with respect to BNY as the Affected Party or Section
                    5(b)(iii)
                    of the ISDA Form Master Agreement with respect to BNY as the
                    Burdened
                    Party. 

                

        

        

        
          	 	
                  11)
                    

                	
                  BNY Payments
                    to be made to Paying
                    Agent.
                    BNY will, unless otherwise directed by the Paying
                    Agent,
                    make all payments hereunder to the Paying
                    Agent.
                    Payment made to the Paying
                    Agent
                    at
                    the account specified herein or to another account specified
                    in writing by
                    the Paying
                    Agent
                    shall satisfy the payment obligations of BNY hereunder to the
                    extent of
                    such payment.

                

        

        

        
          	 	
                  12) 

                	
                  Compliance
                    with Regulation AB: (i) For
                    purposes of Item 1115 of Subpart 229.1100 - Asset Backed Securities
                    (Regulation AB) (17 C.F.R. §§.§§.229.1100 - 229.1123) (“Regulation
                    AB”)
                    under the Securities Act of 1933, as amended, and the Securities
                    Exchange
                    Act of 1934, as amended (the “Exchange
                    Act”),
                    as amended and interpreted by the Securities and Exchange Commission
                    and
                    its staff, if the Depositor or the Counterparty makes a determination,
                    acting reasonably and in good faith, that (x) the applicable
“significance
                    percentage” with respect to this Agreement has been reached, and (y) it
                    has a reporting obligation under the Exchange Act, then BNY shall,
                    within
                    five (5) Business Days after notice to that effect, at its sole
                    expense,
                    take one of the following actions (each subject to satisfaction
                    of the
                    applicable requirements of the Rating Agencies): (1) provide
                    (including,
                    if permitted by Regulation AB, provision by reference to reports
                    filed
                    pursuant to the Exchange Act or otherwise publicly available
                    information):
                    (A) the

                

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-14

            
              

            

          

          
            
            

          

        

        financial
          data required by Item 301 of Regulation S-K (17 C.F.R. §229.301), pursuant
          to Item 1115(b)(1) or; (B)
          financial statements meeting the requirements of Regulation S-X (17 C.F.R.
          §§210.1-01 through 210.12-29, but excluding 17 C.F.R. §§. 210.3-05 and Article
          11 of Regulation S-X (17 C.F.R. §§. §§. 210.11-01 through 210.11-03)),
pursuant
          to Item 1115(b)(2), depending on the applicable significance percentage;
          or
          (C)
          such other financial information as may at the time be required or permitted
          to
          be provided in satisfaction of the requirements of Item 1115(b); together
          with
          accountants consent and/or procedure letter relating thereto, or (2) deliver
          collateral pursuant to an ISDA Credit Support Annex (subject to New York
          Law) in
          an amount sufficient to reduce the “significance percentage” (determined by the
          Depositor, acting reasonably and in good faith) below the requirements
          of Item
          1115(b)(1) or of Item 1115(b)(2), respectively; or (3) secure another entity
          able to comply with the requirements of Item 1115(b) of Regulation AB to
          replace
          BNY as party to this Agreement, on substantially similar terms, the debt
          rating
          of which entity (or credit support provider therefor) meets or exceeds
          the
          applicable requirements of the applicable Rating Agencies.

        

        (ii) In
          the
          event that BNY provides financial data or financial statements in accordance
          with Paragraph 4(12)(i) above, BNY will indemnify and hold harmless the
          Depositor, its directors or officers and any person controlling the Depositor,
          from and against any and all losses, claims, damages and liabilities caused
          by
          any untrue statement or alleged untrue statement of a material fact contained
          therein or caused by any omission or alleged omission to state therein
          a
          material fact required to be stated therein or necessary to make the statements
          therein, in light of the circumstances under which they were made, not
          misleading. The Depositor will indemnify and hold harmless BNY, its directors
          or
          officers and any person controlling the Depositor, from and against any
          and all
          losses, claims, damages and liabilities caused by any untrue statement
          or
          alleged untrue statement of a material fact contained in all offering materials
          (other than said financial information and the description of BNY provided
          by
          BNY for inclusion in such offering materials or reports) filed with the
          Commission or delivered to investors in connection with the offering of
          the
          Certificates and in reports of the Depositor filed under the Exchange Act
          in
          respect of the Certificates, or caused by any omission or alleged omission
          to
          state therein a material fact required to be stated therein or necessary
          to make
          the statements therein, in light of the circumstances under which they
          were
          made, not misleading. The Depositor shall be an express third party beneficiary
          of, and assumes the obligations set forth in this Paragraph 4(12) as if
          a party
          hereto to the extent of the Depositor’s rights and obligations explicitly
          specified herein.

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-15

            
              

            

          

          
            
            

          

        

        

        5. Account
          Details and Settlement Information:

        

        Payments
          to BNY:

        

        The
          Bank
          of New York

        Derivative
          Products Support Department 

        32
          Old
          Slip, 16th
          Floor

        New
          York,
          New York 10286

        Attention:
          Renee Etheart

        ABA
          #021000018

        Account
          #890-0068-175

        Reference:
          Interest Rate Swap/Cap

        

        Payments
          to Counterparty:

        

        Citibank,
          N.A.

        Agency
          and Trust

        New
          York,
          NY

        ABA
          #
          021-000-089

        A/C
          3617-2242

        Ref:
          Account # 106058, CMALT 2006-A4 Yield Maintenance Reserve A/C

        

        

        

        

        

        

        

        

        

        

        6.
          Counterparts.
          This
          Agreement may be executed in several counterparts, each of which shall
          be deemed
          an original but all of which together shall constitute one and the same
          instrument.

        

        Please
          confirm that the foregoing correctly sets forth the terms of our agreement
          by
          executing this agreement and returning it via facsimile to Derivative Products
          Support Dept., Attn: Kenny Au-Yeung at 212-804-5818/5837. Once we receive
          this
          we will send you two original confirmations for execution.

        
          
            Ref
              No.
              38357

            
            

          

          
            F-16

            
              

            

          

          
            
            

          

        

        We
          are
          very pleased to have executed this Transaction with you and we look forward
          to
          completing other transactions with you in the near future.

        

        Very
          truly yours,

        

        THE
          BANK OF NEW YORK

        

        

        By: _______________________________

         

        Name:
          

         

        Title:
          

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-17

            
              

            

          

          
            
            

          

        

        

        

        

        

        The
          Counterparty, acting through its duly authorized signatory, hereby agrees
          to,
          accepts and confirms the terms of the foregoing as of the Trade
          Date.

        

        

        CMALT
          (CITIMORTGAGE ALTERNATIVE LOAN TRUST), SERIES 2006-A4

        BY:
          U.S.
          BANK NATIONAL ASSOCIATION,
          NOT INDIVIDUALLY, BUT SOLELY AS TRUSTEE ON BEHALF OF CMALT (CITIMORTGAGE
          ALTERNATIVE LOAN TRUST), SERIES 2006-A4

        

        

        By: _______________________________

         

        Name:

         

        Title:

        

        

        Solely
          for purposes of paragraph 4(12):

        CITICORP
          MORTGAGE SECURITIES, INC.

        

        

        By: _______________________________

        Name:

        Title:

        

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-18

            
              

            

          

          
            
            

          

        

        

        SCHEDULE
          I

        

        
          	
                  Accrual
                    Start Date

                	
                  Accrual
                    End Date

                	
                  Notional
                    Amount (in USD)

                
	
                  28-Sep-06

                	
                  25-Oct-06

                	
                  104,146,650.00

                
	
                  25-Oct-06

                	
                  25-Nov-06

                	
                  101,857,882.97

                
	
                  25-Nov-06

                	
                  25-Dec-06

                	
                  99,352,878.46

                
	
                  25-Dec-06

                	
                  25-Jan-07

                	
                  96,636,345.09

                
	
                  25-Jan-07

                	
                  25-Feb-07

                	
                  93,713,765.83

                
	
                  25-Feb-07

                	
                  25-Mar-07

                	
                  90,591,387.46

                
	
                  25-Mar-07

                	
                  25-Apr-07

                	
                  87,276,206.36

                
	
                  25-Apr-07

                	
                  25-May-07

                	
                  83,775,950.26

                
	
                  25-May-07

                	
                  25-Jun-07

                	
                  80,099,056.24

                
	
                  25-Jun-07

                	
                  25-Jul-07

                	
                  76,254,644.78

                
	
                  25-Jul-07

                	
                  25-Aug-07

                	
                  72,252,490.17

                
	
                  25-Aug-07

                	
                  25-Sep-07

                	
                  68,102,987.11

                
	
                  25-Sep-07

                	
                  25-Oct-07

                	
                  64,111,443.07

                
	
                  25-Oct-07

                	
                  25-Nov-07

                	
                  60,275,591.00

                
	
                  25-Nov-07

                	
                  25-Dec-07

                	
                  56,593,157.35

                
	
                  25-Dec-07

                	
                  25-Jan-08

                	
                  53,061,861.91

                
	
                  25-Jan-08

                	
                  25-Feb-08

                	
                  49,679,417.60

                
	
                  25-Feb-08

                	
                  25-Mar-08

                	
                  46,443,530.34

                
	
                  25-Mar-08

                	
                  25-Apr-08

                	
                  43,351,898.94

                
	
                  25-Apr-08

                	
                  25-May-08

                	
                  40,402,215.10

                
	
                  25-May-08

                	
                  25-Jun-08

                	
                  37,592,163.41

                
	
                  25-Jun-08

                	
                  25-Jul-08

                	
                  34,919,421.42

                
	
                  25-Jul-08

                	
                  25-Aug-08

                	
                  32,381,659.78

                
	
                  25-Aug-08

                	
                  25-Sep-08

                	
                  29,976,542.38

                
	
                  25-Sep-08

                	
                  25-Oct-08

                	
                  27,701,726.61

                
	
                  25-Oct-08

                	
                  25-Nov-08

                	
                  25,554,863.63

                
	
                  25-Nov-08

                	
                  25-Dec-08

                	
                  23,533,598.59

                
	
                  25-Dec-08

                	
                  25-Jan-09

                	
                  21,635,571.12

                
	
                  25-Jan-09

                	
                  25-Feb-09

                	
                  19,858,415.64

                
	
                  25-Feb-09

                	
                  25-Mar-09

                	
                  18,199,761.83

                
	
                  25-Mar-09

                	
                  25-Apr-09

                	
                  16,596,467.72

                
	
                  25-Apr-09

                	
                  25-May-09

                	
                  15,047,338.98

                
	
                  25-May-09

                	
                  25-Jun-09

                	
                  13,551,204.51

                
	
                  25-Jun-09

                	
                  25-Jul-09

                	
                  12,106,916.09

                

        

        

        
          
            Ref
              No.
              38357

            
            

          

          
            F-19

            
              

            

          

          
            
            

          

        

        

        
          	
                  25-Jul-09

                	
                  25-Aug-09

                	
                  10,713,347.86

                
	
                  25-Aug-09

                	
                  25-Sep-09

                	
                  9,369,395.94

                
	
                  25-Sep-09

                	
                  25-Oct-09

                	
                  8,073,977.98

                
	
                  25-Oct-09

                	
                  25-Nov-09

                	
                  6,826,032.86

                
	
                  25-Nov-09

                	
                  25-Dec-09

                	
                  5,624,520.13

                
	
                  25-Dec-09

                	
                  25-Jan-10

                	
                  4,468,419.75

                
	
                  25-Jan-10

                	
                  25-Feb-10

                	
                  3,356,731.62

                
	
                  25-Feb-10

                	
                  25-Mar-10

                	
                  2,288,475.30

                
	
                  25-Mar-10

                	
                  25-Apr-10

                	
                  1,262,689.50

                
	
                  25-Apr-10

                	
                  25-May-10

                	
                  278,431.86

                

        

        

        

        

         

         

        F-20EXHIBIT
      10.1

    FORM
      OF MORTGAGE LOAN PURCHASE AGREEMENT

    

    This
      Mortgage Loan Purchase Agreement (the "Agreement") dated as of September 1,
      2006
      is between CitiMortgage, Inc. ("CMI" or the "Seller") and Citicorp Mortgage
      Securities, Inc., a Delaware corporation ("CMSI"). The Seller agrees to sell,
      and CMSI agrees to purchase, the mortgage loans originated or acquired by CMI
      as
      described and set forth in the Mortgage Loan Schedule attached as exhibit B
      (the
      "mortgage loans") to the Pooling and Servicing Agreement dated as of September
      1, 2006 (the "Pooling Agreement"), between CMSI, CMI, U.S. Bank National
      Association, a national banking association, in its individual capacity and
      as
      Trustee (the "Trustee"), and Citibank, N.A., in its individual capacity and
      as
      Paying Agent, Certificate Registrar and Authentication Agent, relating to the
      issuance of CMALT (CitiMortgage Alternative Loan Trust), Series 2006-A4 REMIC
      Pass-Through Certificates class A, class B and residual certificates. Terms
      used
      without definition herein shall have the respective meanings assigned to them
      in
      the Pooling Agreement or, if not defined therein, in the Underwriting Agreement
      dated August 31, 2006 (the "Underwriting Agreement"), among CMSI, Citigroup
      Inc.
      and HSBC Securities (USA) Inc. (the "Underwriter").

    

    Purchase
      Price.
      The
      purchase price (the "Purchase Price") for the mortgage loans shall consist
      of
      (a) cash in the amount of
      [           ]% of the
      aggregate scheduled principal balance thereof as of the cut-off date, plus
      accrued interest thereon at the rate of 6.00% per annum on the mortgage loans
      in
      pool I and 5.75% per annum on the mortgage loans in pool II, from and including
      the cut-off date to but excluding the closing date, (b) the class IA-IO and
      IIA-IO certificates, (c) the class LR certificates and (d) the class PR
      certificates. Such cash shall be payable by CMSI to the Seller on the closing
      date in same-day funds, and the Seller will receive on the closing date: (a)
      the
      class IA-IO and IIA-IO certificates and (b) the class LR and class PR
      certificates evidencing the residual interests in the lower-tier REMIC and
      the
      pooling REMIC, respectively. If CMSI for any reason shall repay to the
      Underwriter any portion of the price paid to CMSI by the Underwriter pursuant
      to
      the Underwriting Agreement, the Seller shall simultaneously and in the same
      manner repay to CMSI a proportionate amount of the Purchase Price as such
      repayment to the Underwriter.

    

    Upon
      payment of the Purchase Price, the Seller shall transfer, assign, set over
      and
      otherwise convey to CMSI without recourse all of the Seller's right, title
      and
      interest in and to the mortgage loans, including all interest and principal
      received or receivable by the Seller on or with respect to the mortgage loans
      (other than payments of principal and interest due and payable on the mortgage
      loans on or before the cut-off date and prepayments of principal on the mortgage
      loans received or posted prior to the close of business on the cut-off date),
      together with all of the Seller's right, title and interest in and to the
      proceeds of any related title, hazard or other insurance policies and Primary
      Mortgage Insurance Certificates. The Seller agrees to deliver to CMSI all
      documents, instruments and agreements required to be delivered by CMSI to the
      Trustee under the Pooling Agreement and such other documents, instruments and
      agreements as CMSI shall reasonably request. CMSI hereby directs the Seller
      to
      execute and deliver to the Trustee assignments of the Mortgages to the Trustee
      (and endorsements of any Mortgage Notes relating thereto) in recordable form.
      Such assignments and endorsements shall not affect the rights of the parties
      hereto or to the Pooling Agreement.

    
      
         

      

      
        1

        
          

        

      

      
         

      

    

    

    1. Representations.
      The
      Seller hereby represents and warrants to CMSI (i) that CMSI's representations
      and warranties pursuant to the Pooling Agreement to the Trustee with respect
      to
      the mortgage loans are true and correct and (ii) that the Seller has not dealt
      with any broker, investment banker, agent or other person (other than CMSI
      and
      the Underwriter) who may be entitled to any commission or compensation in
      connection with the sale of the related mortgage loans. The Seller hereby agrees
      to cure any breach of such representations and warranties in accordance with
      the
      terms of the Pooling Agreement.

    

    2. Underwriting.
      The
      Seller hereby agrees to furnish any and all information, documents,
      certificates, letters or opinions reasonably requested by CMSI in order to
      perform any of its obligations or satisfy any of the conditions on its part
      to
      be performed or satisfied at or prior to the closing date.

    

    3. Costs.
      CMSI
      shall pay all expenses incidental to the performance of its obligations under
      the Underwriting Agreement, including without limitation (i) any recording
      fees
      or fees for title policy endorsements and continuations, (ii) the expenses
      of
      preparing, printing and reproducing the Registration Statement, the Prospectus,
      the Underwriting Agreement, the Pooling Agreement and the certificates and
      (iii)
      the cost of delivering the certificates to the offices of The Depository Trust
      Company or the Underwriter, as the case may be.

    

    4. Indemnification.
      The
      Seller hereby agrees to indemnify, defend and hold harmless CMSI against any
      and
      all losses, claims, damages or liabilities (i) resulting from the Seller's
      failure to perform any of its obligations hereunder, (ii) resulting from the
      inaccuracy of the Seller's representations and warranties herein or of CMSI's
      representations and warranties in the Pooling Agreement or (iii) insofar as
      such
      losses, claims, damages or liabilities (or actions or demands for reimbursement
      or contribution in respect thereof) arise out of or are based upon information
      relating to the Seller or the mortgage loans pursuant to the Underwriting
      Agreement.

    

    5. Purchase
      and Sale; Security Interest.
      The
      parties hereto intend the conveyance by the Seller to CMSI of all of its right,
      title and interest in and to the mortgage loans pursuant to this Agreement
      to
      constitute a purchase and sale and not a loan. Notwithstanding the foregoing,
      to
      the extent that such conveyance is held not to constitute a sale under
      applicable law, it is intended that this Agreement shall constitute a security
      agreement under applicable law and that the Seller shall be deemed to have
      granted to CMSI a first priority security interest in all of the Seller's right,
      title and interest in and to the mortgage loans.

    

    6. Notices.
      All
      demands, notices and communications hereunder shall be in writing, shall be
      effective only upon receipt and shall, if sent to CMSI be addressed to it at
      1000 Technology Drive, O’Fallon, Missouri 63368, Attn: Daniel P. Hoffman or if
      sent to Seller be addressed to it at 1000 Technology Drive, O’Fallon, Missouri
      63368, Attn: General Counsel.

    

    7. Trustee
      Beneficiary.
      The
      representations and agreements made by the Seller in this Agreement are made
      for
      the benefit of, and may be enforced by, the Trustee, and the holders of
      certificates to the same extent that the Trustee and the holders of
      certificates, respectively, have rights against CMSI under the Pooling Agreement
      in respect of representations and agreements made by CMSI
      therein.

    
      
         

      

      
        2

        
          

        

      

      
         

      

    

    

    8. Cross-Receipt.
      The
      Seller, by executing this Agreement below, hereby acknowledges receipt of the
      Purchase Price from CMSI. CMSI, by executing this Agreement below, hereby
      acknowledges receipt of the Mortgage Loans from the Seller.

    

    9. Miscellaneous.
      This
      Agreement shall be governed by and construed in accordance with the laws of
      the
      State of New York. Neither this Agreement nor any term hereof may be changed,
      waived, discharged or terminated except by a writing signed by the party against
      whom enforcement of such change, waiver, discharge or termination is sought.
      This Agreement may not be changed in any manner which would have a material
      adverse affect on holders of any class of certificates without the prior written
      consent of the Trustee. The Trustee shall be protected in consenting to any
      such
      change to the same extent provided in section 10 of the Pooling Agreement.
      This
      Agreement may be signed in any number of counterparts, each of which shall
      be
      deemed an original, which taken together shall constitute one and the same
      instrument. This Agreement shall bind and inure to the benefit of and be
      enforceable by CMSI and the Seller and their respective successors and assigns;
      provided,
      however,
      that
      this Agreement cannot be assigned by either party without the consent of the
      other party hereto, and any assignment hereof without such consent shall be
      void.

    

    

    
      
         

      

      
        3

        
          

        

      

      
         

      

    

    IN
      WITNESS WHEREOF, CMSI and the Seller have caused this Agreement to be duly
      executed by their respective officers as of the day and year first above
      written.

    

    

    CITIMORTGAGE,
      INC.

    

    

    

    By:                  

    Jeffrey
      K. Sarni

    Vice
      President

    

    

    

    CITICORP
      MORTGAGE SECURITIES, INC.

    

    

    

    By:                  

    Daniel
      P.
      Hoffman

    President

     

     

     

     

     

    4

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