Document:

<PAGE>

                                                                    EXHIBIT 4.14

                           UNION PLANTERS CORPORATION,

                                 [___________],

                      AS COLLATERAL AGENT, CUSTODIAL AGENT

                           AND SECURITIES INTERMEDIARY

                                       AND

                                 [___________],

                           AS PURCHASE CONTRACT AGENT

                                PLEDGE AGREEMENT

                           DATED AS OF [_____], 200[_]

<PAGE>

                                TABLE OF CONTENTS
<TABLE>
<S>                                                                                            <C>
ARTICLE I DEFINITIONS......................................................................     2
SECTION 1.1 Definitions....................................................................     2
ARTICLE II PLEDGE; CONTROL AND PERFECTION..................................................     3
SECTION 2.1 The Pledge.....................................................................     3
SECTION 2.2 Control and Perfection.........................................................     4
ARTICLE III PAYMENTS ON COLLATERAL.........................................................     6
SECTION 3.1 Payments.......................................................................     6
SECTION 3.2 Application of Payments........................................................     7
ARTICLE IV SUBSTITUTION, RELEASE, REPLEDGE AND SETTLEMENT OF NOTES.........................     7
SECTION 4.1 Collateral Substitution and the Creation of Stripped Units.....................     7
SECTION 4.2 Collateral Substitution and the Re-Creation of Normal Units....................     8
SECTION 4.3 Termination Event..............................................................     8
SECTION 4.4 Early Settlement; Merger Early Settlement; Cash Settlement.....................     9
SECTION 4.5 Remarketing; Application of Proceeds; Settlement...............................     9
ARTICLE V VOTING RIGHTS-- NOTES............................................................    11
SECTION 5.1 Exercise by Purchase Contract Agent............................................    11
ARTICLE VI RIGHTS AND REMEDIES; SPECIAL EVENT REDEMPTION...................................    11
SECTION 6.1 Rights and Remedies of the Collateral Agent....................................    11
SECTION 6.2 Substitutions..................................................................    12
SECTION 6.3 Special Event Redemption.......................................................    12
ARTICLE VII REPRESENTATIONS AND WARRANTIES; COVENANTS......................................    13
SECTION 7.1 Representations and Warranties of the Holders..................................    13
SECTION 7.2 Representations and Warranties of the Collateral Agent, Custodial Agent and
                 Securities Intermediary...................................................    13
SECTION 7.3 Covenants......................................................................    14
ARTICLE VIII THE COLLATERAL AGENT..........................................................    14
SECTION 8.1 Appointment, Powers and Immunities.............................................    14
SECTION 8.2 Instructions of the Company....................................................    15
SECTION 8.3 Reliance.......................................................................    15
SECTION 8.4 Rights in Other Capacities.....................................................    16
SECTION 8.5 Non-Reliance on Collateral Agent...............................................    16
SECTION 8.6 Compensation and Indemnity.....................................................    16
SECTION 8.7 Failure to Act.................................................................    17
SECTION 8.8 Resignation....................................................................    17
SECTION 8.9 Right to Appoint Agent or Advisor..............................................    18
SECTION 8.10 Survival .....................................................................    18
SECTION 8.11 Exculpation...................................................................    18
ARTICLE IX AMENDMENT.......................................................................    19
SECTION 9.1 Amendment Without Consent of Holders...........................................    19
SECTION 9.2 Amendment with Consent of Holders..............................................    19
SECTION 9.3 Execution of Amendments........................................................    20
SECTION 9.4 Effect of Amendments...........................................................    20
SECTION 9.5 Reference to Amendments........................................................    20
ARTICLE X MISCELLANEOUS....................................................................    20
SECTION 10.1 No Waiver.....................................................................    20
SECTION 10.2 GOVERNING LAW.................................................................    21
SECTION 10.3 Notices.......................................................................    21
SECTION 10.4 Successors and Assigns........................................................    21
SECTION 10.5 Counterparts..................................................................    21
SECTION 10.6 Severability..................................................................    21
SECTION 10.7 Expenses, Etc.................................................................    22
SECTION 10.8 Security Interest Absolute....................................................    22
</TABLE>

<PAGE>

<TABLE>
<S>               <C>
EXHIBIT A         Instruction from Purchase Contract Agent to Collateral Agent
EXHIBIT B         Instruction to Purchase Contract Agent
EXHIBIT C         Instruction to Custodial Agent Regarding Remarketing
EXHIBIT D         Instruction to Custodial Agent Regarding Withdrawal from Remarketing
</TABLE>

<PAGE>

         PLEDGE AGREEMENT, dated as of [______], 200[_] (this "Agreement"),
among Union Planters Corporation, a Tennessee corporation (the "Company"),
[________], a [______] [________], not individually but solely as collateral
agent (in such capacity, together with its successors in such capacity, the
"Collateral Agent"), as custodial agent (in such capacity, together with its
successors in such capacity, the "Custodial Agent") and as "securities
intermediary" as defined in Section 8-102(a)(14) of the Code (as defined herein)
(in such capacity, together with its successors in such capacity, the
"Securities Intermediary"), and [________], a [______] [_______], not
individually but solely as purchase contract agent and as attorney-in-fact of
the Holders from time to time of the Units (in such capacity, together with its
successors in such capacity, the "Purchase Contract Agent") under the Purchase
Contract Agreement (as defined herein).

                                    RECITALS

         WHEREAS, the Company and the Purchase Contract Agent are parties to the
Purchase Contract Agreement, dated as of the date hereof (as modified and
supplemented and in effect from time to time, the "Purchase Contract
Agreement"), pursuant to which there may be issued Units having a Stated Amount
of $[__] per Unit, all of which will initially be Normal Units.

         WHEREAS, each Normal Unit will be comprised of (a) a Purchase Contract
and (b) either beneficial ownership of (i) a 1/[__], or [__]%, beneficial
ownership interest in a Note having a $[____] principal amount or (ii) following
the remarketing of the Notes in accordance with the Purchase Contract Agreement
and the Remarketing Agreement or following a Special Event Redemption in
accordance with the Purchase Contract Agreement and the terms of the Notes,
beneficial ownership of the appropriate Treasury Consideration.

         WHEREAS, in accordance with the terms of the Purchase Contract
Agreement, a Holder of Normal Units may separate the Notes or the appropriate
Treasury Consideration, as applicable, from the related Purchase Contracts by
substituting for such Notes or the appropriate Treasury Consideration, as the
case may be, Treasury Securities that will pay in the aggregate an amount equal
to the aggregate Stated Amount of such Normal Units. Upon such separation, the
Normal Units will become Stripped Units. Each Stripped Unit will be comprised of
(a) a Purchase Contract and (b) a 1/[__] undivided beneficial interest in a
Treasury Security.

         WHEREAS, pursuant to the terms of the Purchase Contract Agreement and
the Purchase Contracts, the Holders, from time to time, of the Units have
irrevocably authorized the Purchase Contract Agent, as attorney-in-fact of such
Holders, among other things, to execute and deliver this Agreement on behalf of
such Holders and to grant the pledge provided hereby of the Notes, any Treasury
Consideration and any Treasury Securities delivered in exchange therefor to
secure each Holder's obligations under the related Purchase Contract, as
provided herein and subject to the terms hereof.

         NOW, THEREFORE, in consideration of the premises and for other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the Company, the Collateral Agent, the Securities Intermediary,
the Custodial Agent and the Purchase Contract Agent, on its own behalf and as
attorney-in-fact of the Holders from time to time of the Units, agree as
follows:

<PAGE>

                                    ARTICLE I

                                   DEFINITIONS

         SECTION 1.1 Definitions.

         For all purposes of this Agreement, except as otherwise expressly
provided or unless the context otherwise requires:

         (a)      capitalized terms used but not defined herein are used as
    defined in the Purchase Contract Agreement;

         (b)      the defined terms in this Agreement have the meanings assigned
    to them in this Article and include the plural as well as the singular; and

         (c)      the words "herein," "hereof" and "hereunder" and other words
    of similar import refer to this Agreement as a whole and not to any
    particular Article, Section or other subdivision.

         "Agreement" means this agreement as originally executed or as it may
from time to time be supplemented or amended by one or more agreements
supplemental hereto entered into pursuant to the applicable provisions hereof.

         "Code" has the meaning specified in Section 6.1 hereof.

         "Collateral" has the meaning specified in Section 2.1 (a) hereof.

         "Collateral Account" means the securities account (number [______])
maintained at [________], [________________], in the name "[________], as
Purchase Contract Agent on behalf of the holders of certain securities of Union
Planters Corporation, Collateral Account subject to the security interest of
[________], as Collateral Agent, for the benefit of Union Planters Corporation,
as pledgee" and any successor account.

         "Collateral Agent" has the meaning specified in the first paragraph of
this Agreement.

         "Company" means the Person named as the "Company" in the first
paragraph of this Agreement until a successor shall have become such, and
thereafter "Company" shall mean such successor.

         "Custodial Agent" has the meaning specified in the first paragraph of
this Agreement.

         "Intermediary" means any entity that in the ordinary course of its
business maintains securities accounts for others and is acting in that
capacity.

         "Pledge" has the meaning specified in Section 2.1 hereof.

         "Pledged Notes" has the meaning specified in Section 2.1 hereof.

         "Pledged Treasury Consideration" has the meaning specified in Section
2.1 hereof.

         "Pledged Treasury Securities" has the meaning specified in Section 2.1
hereof.

         "Proceeds" means all interest, dividends, cash, instruments,
securities, financial assets (as defined in [Section 8-102(a)(9)] of the Code)
and other property from time to time received, receivable or otherwise
distributed upon the sale, exchange, collection or disposition of the Collateral
or any proceeds thereof.

                                       -2-

<PAGE>

         "Purchase Contract Agent" has the meaning specified in the first
paragraph of this Agreement.

         "Purchase Contract Agreement" has the meaning specified in the
Recitals.

         "Securities Intermediary" has the meaning specified in the first
paragraph of this Agreement.

         "Security Entitlement" has the meaning set forth in [Section
8-102(a)(17)] of the Code.

         "Separate Notes" means any Notes that are not Pledged Notes.

         "TRADES Regulations" means the regulations of the United States
Department of the Treasury, published at 31 C.F.R. Part 357, as amended from
time to time. Unless otherwise defined herein, all terms defined in the TRADES
Regulations are used herein as therein defined.

         "Transfer" means, with respect to the Collateral and in accordance with
the instructions of the Collateral Agent, the Purchase Contract Agent or the
Holder, as applicable:

         (i)      in the case of Collateral consisting of securities which
                  cannot be delivered by book-entry or which the parties agree
                  are to be delivered in physical form, delivery in appropriate
                  physical form to the recipient accompanied by any duly
                  executed instruments of transfer, assignments in blank,
                  transfer tax stamps and any other documents necessary to
                  constitute a legally valid transfer to the recipient;

         (ii)     in the case of Collateral consisting of securities maintained
                  in book-entry form by causing a "securities intermediary" (as
                  defined in [Section 8-102(a)(14)] of the Code) to (a) credit a
                  "security entitlement" (as defined in [Section 8-102(a)(17)]
                  of the Code) with respect to such securities to a "securities
                  account" (as defined in [Section 8-501(a)] of the Code)
                  maintained by or on behalf of the recipient and (b) to issue a
                  confirmation to the recipient with respect to such credit. In
                  the case of Collateral to be delivered to the Collateral
                  Agent, the securities intermediary shall be the Securities
                  Intermediary and the securities account shall be the
                  Collateral Account. In addition, any Transfer of Treasury
                  Securities and Treasury Consideration hereunder shall be made
                  in accordance with the TRADES Regulations and other applicable
                  law.

                                   ARTICLE II

                         PLEDGE; CONTROL AND PERFECTION

         SECTION 2.1 The Pledge.

         (a)      The Holders from time to time acting through the Purchase
Contract Agent, as their attorney-in-fact, and the Purchase Contract Agent, as
such attorney-in-fact, hereby pledge and grant to the Collateral Agent, for the
benefit of the Company, as collateral security for the performance when due by
such Holders of their respective obligations under the related Purchase
Contracts, a security interest in all of the right, title and interest of the
Purchase Contract Agent and such Holders in:

         (i)      (A) the Notes, Treasury Consideration or Treasury Securities
constituting a part of the Units, (B) any Treasury Securities delivered in
exchange for any Notes or Treasury Consideration, as applicable, in accordance
with Section 4.1 hereof, and (C) any Notes or Treasury Consideration, as
applicable, delivered in exchange for any Treasury Securities in accordance with
Section 4.2 hereof, in each case that have been Transferred to or

                                       -3-

<PAGE>

                  otherwise received by the Collateral Agent and not released by
                  the Collateral Agent to such Holders under the provisions of
                  this Agreement;

         (ii)     the Collateral Account and all securities, financial assets,
                  security entitlements, cash and other property credited
                  thereto and all Security Entitlements related thereto;

         (iii)    all Proceeds of the foregoing; and

         (iv)     all powers and rights now owned or hereafter acquired under or
                  with respect to any of the foregoing (all of the foregoing,
                  collectively, the "Collateral").

         (b)      Prior to or concurrently with the execution and delivery of
this Agreement, the Purchase Contract Agent, on behalf of the initial Holders of
the Units, shall cause the Notes comprising a part of the Normal Units to be
Transferred to the Collateral Agent for the benefit of the Company.

         (c)      The pledge provided in this Section 2.1 is herein referred to
as the "Pledge" and the Notes (including any Notes that are delivered pursuant
to Section 6.2 hereof), Treasury Consideration and Treasury Securities subject
to the Pledge, excluding any Notes, Treasury Consideration or Treasury
Securities released from the Pledge as provided in Sections 4.1 and 4.2 hereof,
respectively, are hereinafter referred to as "Pledged Notes," "Pledged Treasury
Consideration" and "Pledged Treasury Securities," respectively. Subject to the
Pledge and the provisions of Section 2.2 hereof, the Holders from time to time
shall have full beneficial ownership of the Collateral. For purposes of
perfecting the Pledge under applicable law, including, to the extent applicable,
the TRADES Regulations or the Uniform Commercial Code as adopted and in effect
in any applicable jurisdiction, the Collateral Agent shall be the agent of the
Company as provided herein. Whenever directed by the Collateral Agent acting on
behalf of the Company, the Securities Intermediary shall have the right to
reregister the Notes or any other securities held in physical form in its name.

         (d)      Except as may be required in order to release Notes or
Treasury Consideration, as applicable, in connection with a Special Event
Redemption or with a Holder's election to convert its investment from a Normal
Unit to a Stripped Unit, or except as otherwise required to release Notes as
specified herein, neither the Collateral Agent, the Custodial Agent nor the
Securities Intermediary shall relinquish physical possession of any certificate
evidencing Notes, Treasury Securities or Treasury Consideration, as applicable,
prior to the termination of this Agreement. If it becomes necessary for the
Securities Intermediary to relinquish physical possession of a certificate in
order to release a portion of the Notes evidenced thereby from the Pledge, the
Securities Intermediary shall use its best efforts to obtain physical possession
of a replacement certificate evidencing any Notes remaining subject to the
Pledge hereunder registered to it or endorsed in blank within fifteen days of
the date it relinquished possession. The Securities Intermediary shall promptly
notify the Company and the Collateral Agent of its inability to obtain
possession of any such replacement certificate as required hereby.

         SECTION 2.2 Control and Perfection.

         (a)      In connection with the Pledge granted in Section 2.1, and
subject to the other provisions of this Agreement, the Holders from time to time
acting through the Purchase Contract Agent, as their attorney-in-fact, hereby
authorize and direct the Securities Intermediary (without the necessity of
obtaining the further consent of the Purchase Contract Agent or any of the
Holders), and the Securities Intermediary agrees, to comply with and follow any
instructions and entitlement orders (as defined in [Section 8-102(a)(8)] of the
Code) that the Collateral Agent may deliver pursuant to the terms hereof or upon
the written direction of the Company with respect to the Collateral Account, the
Collateral credited thereto and any Security Entitlements with respect to any
thereof. In the event the Securities Intermediary receives from the Holders or
the Purchase Contract Agent entitlement orders which conflict with entitlement
orders

                                       -4-

<PAGE>

received from the Collateral Agent, the Securities Intermediary shall follow the
entitlement orders received from the Collateral Agent. Such instructions and
entitlement orders may, without limitation, direct the Securities Intermediary
to transfer, redeem, assign, or otherwise deliver the Notes, the Treasury
Consideration and the Treasury Securities, and any Security Entitlements with
respect thereto, or sell, liquidate or dispose of such assets through a broker
designated by the Company, and to pay and deliver any income, proceeds or other
funds derived therefrom to the Company. The Holders from time to time acting
through the Purchase Contract Agent hereby further authorize and direct the
Collateral Agent, as agent of the Company, to, pursuant to the terms hereof or
upon written direction of the Company, itself issue instructions and entitlement
orders, and to otherwise take action, with respect to the Collateral Account,
the Collateral credited thereto and any Security Entitlements with respect
thereto, all without the necessity of obtaining the further consent of the
Purchase Contract Agent or any of the Holders. The Collateral Agent shall be the
agent of the Company and shall act only in accordance with the terms hereof or
as otherwise directed in writing by the Company. Without limiting the generality
of the foregoing, the Collateral Agent shall issue entitlement orders to the
Securities Intermediary when and as required by the terms hereof or as otherwise
directed in writing by the Company.

         (b)      The Securities Intermediary hereby confirms and agrees that:

         (i)      all securities or other property underlying any financial
                  assets credited to the Collateral Account shall be registered
                  in the name of the Securities Intermediary, or its nominee,
                  indorsed to the Securities Intermediary, or its nominee, or in
                  blank or credited to another Collateral Account maintained in
                  the name of the Securities Intermediary and in no case will
                  any financial asset credited to the Collateral Account be
                  registered in the name of the Purchase Contract Agent, the
                  Collateral Agent, the Company or any Holder, payable to the
                  order of, or specially indorsed to, the Purchase Contract
                  Agent, the Collateral Agent, the Company or any Holder except
                  to the extent the foregoing have been specially indorsed to
                  the Securities Intermediary or in blank;

         (ii)     all property delivered to the Securities Intermediary pursuant
                  to this Agreement (including, without limitation, any Notes,
                  Treasury Consideration or Treasury Securities) will be
                  promptly credited to the Collateral Account;

         (iii)    the Collateral Account is an account to which financial assets
                  are or may be credited, and the Securities Intermediary shall,
                  subject to the terms of this Agreement, treat the Purchase
                  Contract Agent as entitled to exercise the rights of any
                  financial asset credited to the Collateral Account;

         (iv)     the Securities Intermediary has not entered into, and until
                  the termination of this Agreement will not enter into, any
                  agreement with any other Person relating to the Collateral
                  Account and/or any financial assets credited thereto pursuant
                  to which it has agreed to comply with entitlement orders (as
                  defined in [Section 8-102(a)(8)] of the Code) of such other
                  Person; and

         (v)      the Securities Intermediary has not entered into, and until
                  the termination of this Agreement will not enter into, any
                  agreement with the Company, the Collateral Agent or the
                  Purchase Contract Agent purporting to limit or condition the
                  obligation of the Securities Intermediary to comply with
                  entitlement orders as set forth in this Section 2.2 hereof.

         (c)      The Securities Intermediary hereby agrees that each item of
property (whether investment property, financial asset, security, instrument or
cash) credited to the Collateral Account shall be treated as a "financial asset"
within the meaning of [Section 8-102(a)(9)] of the Code.

                                       -5-

<PAGE>

         (d)      In the event of any conflict between this Agreement (or any
portion thereof) and any other agreement now existing or hereafter entered into,
the terms of this Agreement shall prevail.

         (e)      The Purchase Contract Agent hereby irrevocably constitutes and
appoints the Collateral Agent and the Company, with full power of substitution,
as the Purchase Contract Agent's attorney-in-fact to take on behalf of, and in
the name, place and stead of the Purchase Contract Agent and the Holders, any
action necessary or desirable to perfect and to keep perfected the security
interest in the Collateral referred to in Section 2.1. The grant of such
power-of-attorney shall not be deemed to require of the Collateral Agent any
specific duties or obligations not otherwise assumed by the Collateral Agent
hereunder. Notwithstanding the foregoing, in no event shall the Collateral
Agent, the Custodial Agent or the Securities Intermediary be responsible for the
preparation or filing of any financing or continuation statements in the
appropriate jurisdictions or responsible for maintenance or perfection of any
security interest hereunder.

                                   ARTICLE III

                             PAYMENTS ON COLLATERAL

         SECTION 3.1 Payments.

         So long as the Purchase Contract Agent is the registered owner of the
Pledged Notes, Pledged Treasury Consideration or Pledged Treasury Securities, it
shall receive all payments thereon. If the Pledged Notes are re-registered such
that the Collateral Agent becomes the registered holder, all payments of the
principal of, or interest on, the Pledged Notes and all payments of the
principal of, or cash distributions on, any Pledged Treasury Consideration or
Pledged Treasury Securities, that are received by the Collateral Agent and that
are properly payable hereunder shall be paid by the Collateral Agent by wire
transfer in same day funds:

         (i)      in the case of (A) quarterly cash distributions on Normal
                  Units which include Pledged Notes or Pledged Treasury
                  Consideration, as the case may be, and (B) any payments with
                  respect to any Notes or Treasury Consideration, as the case
                  may be, that have been released from the Pledge pursuant to
                  Section 4.3 hereof, to the Purchase Contract Agent, for the
                  benefit of the relevant Holders of the Normal Units, to the
                  account designated by the Purchase Contract Agent for such
                  purpose no later than 11:00 a.m., New York City time, on the
                  Business Day such payment is received by the Collateral Agent
                  (provided that in the event such payment or payment
                  instructions are received by the Collateral Agent on a day
                  that is not a Business Day or after 9:00 a.m., New York City
                  time, on a Business Day, then such payment shall be made no
                  later than 9:30 a.m., New York City time, on the next
                  succeeding Business Day);

         (ii)     in the case of any payments with respect to any Treasury
                  Securities that have been released from the Pledge pursuant to
                  Section 4.3 hereof to the Holders of the Stripped Units, to
                  the accounts and in such amounts designated by the Purchase
                  Contract Agent in writing for such purpose no later than 2:00
                  p.m., New York City time, on the Business Day such payment is
                  received by the Collateral Agent (provided that in the event
                  such payment or payment instructions are received by the
                  Collateral Agent on a day that is not a Business Day or after
                  10:00 a.m., New York City time, on a Business Day, then such
                  payment shall be made no later than 10:30 a.m., New York City
                  time, on the next succeeding Business Day); any payment to be
                  made directly to the Holders of such Stripped Units shall be
                  subject to applicable federal withholding law, including the
                  requirement that a Holder shall have provided to the
                  Collateral Agent its certified taxpayer identification number
                  by furnishing appropriate Forms W-9 (or such other forms as
                  shall be applicable); and

                                       -6-

<PAGE>

         (iii)    in the case of payments in respect of any Pledged Notes,
                  Pledged Treasury Consideration or Pledged Treasury Securities,
                  as the case may be, to be paid upon settlement of such
                  Holder's obligations to purchase shares of Common Stock under
                  the Purchase Contract, to the Company on the Stock Purchase
                  Date in accordance with the procedure set forth in Section
                  4.5(a) or 4.5(b) hereof, in full satisfaction of the
                  respective obligations of the Holders under the related
                  Purchase Contracts.

         SECTION 3.2 Application of Payments.

         All payments received by the Purchase Contract Agent as provided herein
shall be applied by the Purchase Contract Agent pursuant to the provisions of
the Purchase Contract Agreement. If, notwithstanding the foregoing, the Purchase
Contract Agent shall receive any payments of principal on account of any Notes
or Treasury Consideration, as applicable, that, at the time of such payment, are
Pledged Notes or Pledged Treasury Consideration, as the case may be (other than
payments to which it is entitled pursuant to the terms of the Purchase Contract
Agreement), or a Holder of a Stripped Unit shall receive any payments of
principal on account of any Treasury Securities that, at the time of such
payment, are Pledged Treasury Securities (other than payments to which it is
entitled pursuant to the terms of the Purchase Contract Agreement), the Purchase
Contract Agent or such Holder shall hold the same as trustee of an express trust
for the benefit of the Company (and promptly deliver the same over to the
Company) for application to the obligations of the Holders under the related
Purchase Contracts, and the Holders shall acquire no right, title or interest in
any such payments of principal so received.

                                   ARTICLE IV

             SUBSTITUTION, RELEASE, REPLEDGE AND SETTLEMENT OF NOTES

         SECTION 4.1 Collateral Substitution and the Creation of Stripped Units.

         At any time on or prior to the seventh Business Day immediately
preceding the Stock Purchase Date, a Holder of Normal Units shall have the right
to substitute Treasury Securities for the Pledged Notes or Pledged Treasury
Consideration, as the case may be, securing such Holder's obligations under the
Purchase Contracts comprising a part of such Normal Units, in integral multiples
of [___] Normal Units, or after a successful remarketing of the Notes pursuant
to the Purchase Contract Agreement or a Special Event Redemption, in integral
multiples of Normal Units so that Treasury Securities to be deposited and the
applicable Treasury Consideration, as the case may be, to be released are in
integral multiples of $[____], by (a) Transferring to the Collateral Agent
Treasury Securities having an aggregate principal amount equal to the aggregate
Stated Amount of such Normal Units and (b) delivering such Normal Units to the
Purchase Contract Agent, accompanied by a notice, substantially in the form of
Exhibit B hereto, to the Purchase Contract Agent stating that such Holder has
Transferred Treasury Securities to the Collateral Agent pursuant to clause (a)
above (stating the principal amount, the maturities and the CUSIP numbers of the
Treasury Securities Transferred by such Holder) and requesting that the Purchase
Contract Agent instruct the Collateral Agent to release from the Pledge the
Pledged Notes or Pledged Treasury Consideration related to such Normal Units,
whereupon the Purchase Contract Agent shall promptly give such instruction to
the Collateral Agent in the form provided in Exhibit A; provided that such
Holder may not substitute such Treasury Securities for such Pledged Notes or
Pledged Treasury Consideration pursuant to this Section 4.1 during the period
beginning on the fourth Business Day prior to the first day of the first or
second Remarketing Period and ending on the third Business Day after the end of
such Remarketing Period. Upon receipt of Treasury Securities from a Holder of
Normal Units and the related instruction from the Purchase Contract Agent, the
Collateral Agent shall release the Pledged Notes or Pledged Treasury
Consideration and shall promptly Transfer such Pledged Notes or Pledged Treasury
Consideration free and clear of any lien, pledge or security interest created
hereby, to the Purchase Contract Agent. All items Transferred and/or substituted
by any Holder pursuant to this Section 4.1, Section 4.2 or any other

                                       -7-

<PAGE>

Section of this Agreement shall be Transferred and/or substituted free and clear
of all liens, claims and encumbrances.

         SECTION 4.2 Collateral Substitution and the Re-Creation of Normal
                     Units.

         At any time on or prior to the seventh Business Day immediately
preceding the Stock Purchase Date, a Holder of Stripped Units shall have the
right to reestablish Normal Units (a) consisting of the Purchase Contracts and
Notes in integral multiples of [__] Normal Units, or (b) after a successful
remarketing of the Notes pursuant to the Purchase Contract Agreement or a
Special Event Redemption, consisting of the Purchase Contracts and the
appropriate Treasury Consideration (identified and calculated by reference to
the Treasury Consideration then comprising Normal Units) or the appropriate
portion of the Treasury Portfolio in integral multiples of Stripped Units so
that the Treasury Consideration to be deposited and the Treasury Securities to
be released are in integral multiples of $[____], by (x) Transferring to the
Collateral Agent Notes or the appropriate Treasury Consideration, as the case
may be, then comprising such number of Normal Units as is equal to such Stripped
Units and (y) delivering such Stripped Units to the Purchase Contract Agent,
accompanied by a notice, substantially in the form of Exhibit B hereto, to the
Purchase Contract Agent stating that such Holder has transferred Notes or
Treasury Consideration to the Collateral Agent pursuant to clause (a) above and
requesting that the Purchase Contract Agent instruct the Collateral Agent to
release from the Pledge the Pledged Treasury Securities related to such Stripped
Units, whereupon the Purchase Contract Agent shall give such instruction to the
Collateral Agent in the form provided in Exhibit A; provided that such Holder
may not substitute such Notes or Treasury Consideration for such Pledged
Treasury Securities pursuant to this Section 4.2 during the period beginning on
the fourth Business Day prior to the first day of the first or second
Remarketing Period and ending on the third Business Day after the end of such
Remarketing Period. Upon receipt of the Notes or the appropriate Treasury
Consideration, as the case may be, from such Holder and the instruction from the
Purchase Contract Agent, the Collateral Agent shall release the Pledged Treasury
Securities and shall promptly Transfer such Treasury Securities, free and clear
of any lien, pledge or security interest created hereby, to the Purchase
Contract Agent.

         SECTION 4.3 Termination Event.

         (a)      Upon receipt by the Collateral Agent of written notice from
the Company or the Purchase Contract Agent that there has occurred a Termination
Event and identifying the nature of the Termination Event, the Collateral Agent
shall release all Collateral from the Pledge and shall promptly Transfer any
Pledged Notes or Pledged Treasury Consideration, as the case may be, and Pledged
Treasury Securities to the Purchase Contract Agent for the benefit of the
Holders of the Normal Units and the Stripped Units, respectively, free and clear
of any lien, pledge or security interest or other interest created in favor of
the Collateral Agent hereby.

         (b)      If such Termination Event shall result from the Company's
becoming a debtor under the Bankruptcy Code, and if the Collateral Agent shall
advise the Purchase Contract Agent in writing that the Collateral Agent shall
for any reason be prohibited from promptly effectuating the release and Transfer
of all Pledged Notes, Pledged Treasury Consideration or Pledged Treasury
Securities, as the case may be, as provided by this Section 4.3, the Purchase
Contract Agent shall:

         (i)      use its best efforts to obtain an opinion of a nationally
                  recognized law firm reasonably acceptable to the Collateral
                  Agent to the effect that, as a result of the Company's being
                  the debtor in such a bankruptcy case, the Collateral Agent
                  will not be prohibited from releasing or Transferring the
                  Collateral as provided in this Section 4.3, and shall deliver
                  such opinion to the Collateral Agent within ten days after the
                  receipt of such written notice from the Collateral Agent, and
                  if (y) the Purchase Contract Agent shall be unable to obtain
                  such opinion within ten days after the occurrence of such
                  Termination Event or (z) the Collateral Agent shall continue,
                  after delivery of such opinion, to refuse to

                                       -8-

<PAGE>

                  effectuate the release and Transfer of all Pledged Notes,
                  Pledged Treasury Consideration or Pledged Treasury Securities,
                  as the case may be, as provided in this Section 4.3, then the
                  Purchase Contract Agent shall within fifteen days after the
                  receipt of such written notice from the Collateral Agent
                  commence an action or proceeding in the court with
                  jurisdiction of the Company's case under the Bankruptcy Code
                  seeking an order requiring the Collateral Agent to effectuate
                  the release and transfer of all Pledged Notes, Pledged
                  Treasury Consideration or Pledged Treasury Securities, as the
                  case may be, as provided by this Section 4.3; or

         (ii)     commence an action or proceeding like that described in
                  subsection (i) hereof within ten days after the receipt of
                  such written notice from the Collateral Agent.

         SECTION 4.4 Early Settlement; Merger Early Settlement; Cash Settlement.

         Upon written notice to the Collateral Agent by the Purchase Contract
Agent that one or more Holders of Units have elected to effect Early Settlement,
Merger Early Settlement or Cash Settlement of their respective obligations under
the Purchase Contracts forming a part of such Units in accordance with the terms
of the Purchase Contracts and the Purchase Contract Agreement (setting forth the
number of such Purchase Contracts as to which such Holders have elected to
effect Early Settlement, Merger Early Settlement or Cash Settlement), and that
the Purchase Contract Agent has received from such Holders, and paid to the
Company as confirmed by written notice to the Collateral Agent by the Company,
the related Early Settlement Amounts, Merger Early Settlement Amounts or Cash
Settlement Amounts, as the case may be, pursuant to the terms of the Purchase
Contracts and the Purchase Contract Agreement and that all conditions to such
Early Settlement, Merger Early Settlement or Cash Settlement, as the case may
be, have been satisfied, then the Collateral Agent shall release from the Pledge
(a) Pledged Notes or Pledged Treasury Consideration, as the case may be, in the
case of a Holder of Normal Units or (b) Pledged Treasury Securities, in the case
of a Holder of Stripped Units, identified by the Purchase Contract Agent as
relating to such Purchase Contracts as to which such Holders have elected to
effect Early Settlement, Merger Early Settlement or Cash Settlement, and shall
Transfer all such Pledged Notes, Pledged Treasury Consideration or Pledged
Treasury Securities, as the case may be, free and clear of any lien, pledge or
security interest created hereby, to the Purchase Contract Agent for the benefit
of the Holders.

         SECTION 4.5 Remarketing; Application of Proceeds; Settlement.

         (a)      Pursuant to the Purchase Contract Agreement, the Purchase
Contract Agent shall notify, by 10:00 a.m., New York City time, on the third
Business Day preceding the first day of any Remarketing Period, the Remarketing
Agent and the Collateral Agent of the aggregate principal amount of Notes
comprising part of Normal Units to be remarketed. The Collateral Agent shall, by
10:00 a.m., New York City time, on the Business Day immediately preceding the
first day of any Remarketing Period, without any instruction from Holders of
Normal Units, deliver (i) the Pledged Notes to be remarketed to the Remarketing
Agent for remarketing and (ii) the remaining Pledged Notes to the Purchase
Contract Agent for distribution to the Holders that have elected not to
participate in the remarketing in accordance with the Purchase Contract
Agreement. The Remarketing Agent will agree pursuant to the Remarketing
Agreement to deliver the Agent-purchased Treasury Consideration purchased from
the proceeds of a successful remarketing to the Purchase Contract Agent, which
shall thereupon deliver such Agent-purchased Treasury Consideration to the
Collateral Agent. Upon receipt of the Agent-purchased Treasury Consideration
from the Purchase Contract Agent following a successful remarketing, the
Collateral Agent, for the benefit of the Company, shall thereupon hold such
Agent-purchased Treasury Consideration to secure such Holders' obligations under
the Purchase Contracts. On the Stock Purchase Date, the Collateral Agent shall
apply that portion of the payments received in respect of the Pledged Treasury
Consideration equal to the aggregate Stated Amount of the related Normal Units
to satisfy in full the obligations of such Holders of Normal Units to pay the
Purchase Price under the related Purchase Contracts. The remaining portion of
such Proceeds, if any, shall be distributed by the Collateral Agent to the
Purchase Contract Agent for

                                       -9-

<PAGE>

payment to each Holder of a Normal Unit a cash payment in an amount equal to
1/[__], or [__]%, of a quarterly interest payment on the $[____] principal
amount of the Notes at the initial annual rate of [___]%.

         (b)      Promptly following a Failed Remarketing, the Notes delivered
to the Remarketing Agent and the Purchase Contract Agent pursuant to Section
4.5(a) shall be returned to the Collateral Agent, together with written notice
from the Remarketing Agent of the Failed Remarketing. The Collateral Agent, for
the benefit of the Company, shall thereupon hold such Notes to secure the
obligations of Holders of Normal Units under the Purchase Contracts. The
Remarketing Agent shall agree to make one or more attempts to remarket the Notes
in accordance with the procedures set forth in the Purchase Contract Agreement
and the Remarketing Agreement between the Remarketing Date and the Stock
Purchase Date, provided that the requirements of Section 5.4(b)(ii) of the
Purchase Contract Agreement have been met. If by 4:00 p.m., New York City time,
on the third Business Day immediately preceding the Stock Purchase Date the
Remarketing Agent has failed to remarket the Notes at a price equal to at least
[____]% of the Remarketing Value, the "Last Failed Remarketing" shall be deemed
to have occurred. In this case, the Remarketing Agent will agree to advise the
Collateral Agent in writing that it cannot remarket the related Pledged Notes of
such Holders of Normal Units and the Remarketing Agent will agree pursuant to
the Remarketing Agreement to promptly return to the Collateral Agent the Notes
delivered to it pursuant to Section 4.5(a). The Collateral Agent, for the
benefit of the Company will, at the written direction of the Company, deliver or
dispose of the Pledged Notes in accordance with the Company's written
instructions to satisfy in full, from any such disposition or retention, such
Holders' obligations to pay the Purchase Price for the Common Stock; provided
that if upon a Failed Remarketing or the Last Failed Remarketing, as the case
may be, the Collateral Agent delivers or disposes of the Pledged Notes in
accordance with the written instructions of the Company, any accrued and unpaid
interest on such Notes will become payable by the Company to the Purchase
Contract Agent for payment to the Holder of the Normal Units to which such Notes
relate in accordance with the Purchase Contract Agreement.

         (c)      In the event a Holder of Stripped Units has not made an Early
Settlement, Merger Early Settlement or Cash Settlement of the Purchase Contracts
underlying its Stripped Units, such Holder shall be deemed to have elected to
pay for the shares of Common Stock to be issued under such Purchase Contracts
from the payments received in respect of the related Pledged Treasury
Securities. Without receiving any instruction from any such Holder of Stripped
Units, the Collateral Agent shall apply such payments to the settlement of such
Purchase Contracts on the Stock Purchase Date pursuant to written instructions
from the Purchase Contract Agent. In the event the payments received in respect
of the related Pledged Treasury Securities are in excess of the aggregate
Purchase Price of the Purchase Contracts being settled thereby, the Collateral
Agent shall distribute such excess, when received, to the Purchase Contract
Agent for payment to such Holders of Stripped Units.

         (d)      Pursuant to the Remarketing Agreement and Purchase Contract
Agreement, on or prior to the fourth Business Day preceding the first day of any
Remarketing Period, but no earlier than the Payment Date immediately preceding
the first day of such Remarketing Period, holders of Separate Notes may elect to
have their Separate Notes remarketed by delivering their Separate Notes,
together with a notice of such election, substantially in the form of Exhibit C
hereto, to the Custodial Agent. On the third Business Day prior to the first day
of any Remarketing Period, by 10:00 a.m., New York City time, the Custodial
Agent shall notify the Remarketing Agent of the principal amount of such
Separate Notes to be remarketed. The Custodial Agent will hold such Separate
Notes in an account separate from the Collateral Account. A holder of Separate
Notes electing to have its Separate Notes remarketed will also have the right to
withdraw such election by written notice to the Custodial Agent, substantially
in the form of Exhibit D hereto, on or prior to the fourth Business Day
immediately preceding the first day of any Remarketing Period, upon which notice
the Custodial Agent will return such Separate Notes to such holder. On the
Business Day immediately preceding the first day of any Remarketing Period, the
Custodial Agent will deliver to the Remarketing Agent for remarketing all
Separate Notes delivered to the Custodial Agent pursuant to this Section 4.5(d)
and not withdrawn pursuant to the terms hereof prior to such date. The portion
of the proceeds from such remarketing equal to the amount calculated in respect
of such Separate Notes as set

                                      -10-

<PAGE>

forth in Section 5.4(b) of the Purchase Contract Agreement will automatically be
remitted by the Remarketing Agent to the Custodial Agent for the benefit of the
holders of such Separate Notes. In addition, after deducting as the remarketing
fee an amount not exceeding [__] basis points ([__]%) of the Remarketing Value,
the Remarketing Agent will remit to the Custodial Agent the remaining portion of
the proceeds, if any, for payment to such holders. If, despite using
commercially reasonable best efforts, the Remarketing Agent advises the
Custodial Agent in writing that there has been a Failed Remarketing, the
Remarketing Agent will promptly return such Notes to the Custodial Agent for
redelivery to the holders of such Separate Notes. For purposes of this Section
4.5(d), a "holder" of Separate Notes shall mean the Person in whose name such
Separate Notes is registered on the books of the registrar for the Notes.

                                    ARTICLE V

                             VOTING RIGHTS -- NOTES

         SECTION 5.1 Exercise by Purchase Contract Agent.

         The Purchase Contract Agent may exercise, or refrain from exercising,
any and all voting and other consensual rights pertaining to the Pledged Notes
or any part thereof for any purpose not inconsistent with the terms of this
Agreement and in accordance with the terms of the Purchase Contract Agreement;
provided that the Purchase Contract Agent shall not exercise or, as the case may
be, shall not refrain from exercising such right if, in the judgment of the
Company, such action would impair or otherwise have a material adverse effect on
the value of all or any of the Pledged Notes; and provided, further, that the
Purchase Contract Agent shall give the Company and the Collateral Agent at least
five Business Days' prior written notice of the manner in which it intends to
exercise, or its reasons for refraining from exercising, any such right. Upon
receipt of any notices and other communications in respect of any Pledged Notes,
including notice of any meeting at which holders of Notes are entitled to vote
or solicitation of consents, waivers or proxies of holders of Notes, the
Collateral Agent shall use reasonable efforts to send promptly to the Purchase
Contract Agent such notice or communication, and as soon as reasonably
practicable after receipt of a written request therefor from the Purchase
Contract Agent, execute and deliver to the Purchase Contract Agent such proxies
and other instruments in respect of such Pledged Notes (in form and substance
satisfactory to the Collateral Agent) as are prepared by the Purchase Contract
Agent with respect to the Pledged Notes.

                                   ARTICLE VI

                  RIGHTS AND REMEDIES; SPECIAL EVENT REDEMPTION

         SECTION 6.1 Rights and Remedies of the Collateral Agent.

         (a)      In addition to the rights and remedies available at law or in
equity, after an event of default under the Purchase Contracts, the Collateral
Agent shall have all of the rights and remedies with respect to the Collateral
of a secured party under the Uniform Commercial Code (or any successor thereto)
as in effect in the State of New York from time to time (the "Code") (whether or
not the Code is in effect in the jurisdiction where the rights and remedies are
asserted) and the TRADES Regulations and such additional rights and remedies to
which a secured party is entitled under the laws in effect in any jurisdiction
where any rights and remedies hereunder may be asserted. Wherever reference is
made in this Agreement to any section of the Code, such reference shall be
deemed to include a reference to any provision of the Code which is a successor
to, or amendment of, such section. Without limiting the generality of the
foregoing, such remedies may include, to the extent permitted by applicable law,
(i) retention of the Pledged Notes or other Collateral in full satisfaction of
the Holders' obligations under the

                                      -11-

<PAGE>

Purchase Contracts or (ii) sale of the Pledged Notes or other Collateral in one
or more public or private sales or otherwise at the written direction of the
Company.

         (b)      Without limiting any rights or powers otherwise granted by
this Agreement to the Collateral Agent, in the event the Collateral Agent is
unable to make payments to the Company on account of any Pledged Treasury
Consideration or Pledged Treasury Securities as provided in Article III hereof
in satisfaction of the obligations of the Holder of the Units of which such
Pledged Treasury Consideration or Pledged Treasury Securities, as applicable, is
a part under the related Purchase Contracts, the inability to make such payments
shall constitute an event of default under the Purchase Contracts and the
Collateral Agent shall have and may exercise, with reference to such Pledged
Treasury Securities or such Pledged Treasury Consideration, as applicable, and
such obligations of such Holder, any and all of the rights and remedies
available to a secured party under the Code and the TRADES Regulations after
default by a debtor, and as otherwise granted herein or under any other law.

         (c)      Without limiting any rights or powers otherwise granted by
this Agreement to the Collateral Agent, the Collateral Agent is hereby
irrevocably authorized to receive and collect all payments of (i) the principal
amount of, or interest on, the Pledged Notes, or (ii) the principal amount of
the Pledged Treasury Consideration or Pledged Treasury Securities, subject, in
each case, to the provisions of Article III, and as otherwise granted herein.

         (d)      The Purchase Contract Agent, individually and as
attorney-in-fact for each Holder of Units, agrees that, from time to time, upon
the written request of the Company or the Collateral Agent (acting upon the
written request of the Company), the Purchase Contract Agent or such Holder
shall execute and deliver such further documents and do such other acts and
things as may be necessary, including as the Company or the Collateral Agent
(acting upon the written request of the Company) may reasonably request in order
to maintain the Pledge, and the perfection and priority thereof, and to confirm
the rights of the Collateral Agent hereunder. The Purchase Contract Agent shall
have no liability to any Holder for executing any documents or taking any such
acts requested by the Company or the Collateral Agent (acting upon the written
request of the Company) hereunder, except for liability for its own negligent
act, its own negligent failure to act, its own bad faith or its own willful
misconduct.

         SECTION 6.2 Substitutions.

         Whenever a Holder has the right to substitute Treasury Securities,
Notes, or Treasury Consideration, as the case may be, for Collateral held by the
Collateral Agent, such substitution shall not constitute a novation of the
security interest created hereby.

         SECTION 6.3 Special Event Redemption.

         Upon the occurrence of a Special Event Redemption prior to the Stock
Purchase Date or the earlier successful remarketing of the Notes pursuant to
Section 5.4 of the Purchase Contract Agreement and the receipt of the Redemption
Price of the Pledged Notes by the Collateral Agent, the Collateral Agent will,
at the written direction of the Company, apply the Redemption Price to purchase
on behalf of the Holders of Normal Units the Special Event Redemption Treasury
Consideration. The Collateral Agent shall transfer the Special Event Redemption
Treasury Consideration to the Collateral Account to secure the obligation of all
Holders of Normal Units to purchase shares of Common Stock of the Company under
the Purchase Contracts constituting a part of such Normal Units, in substitution
for the Pledged Notes. Thereafter, the Collateral Agent shall have such security
interests, rights and obligations with respect to the Special Event Redemption
Treasury Consideration as it had in respect of the Pledged Notes as provided in
Articles II, III, IV, V and VI, and any reference herein to the Notes shall be
deemed to be reference to such Special Event Redemption Treasury Consideration,
and any reference herein to interest on the Notes shall be deemed to be a
reference to corresponding distributions on such Special Event Redemption
Treasury Consideration.

                                      -12-

<PAGE>

Upon the occurrence of a Special Event Redemption, the Collateral Agent shall be
authorized to surrender the Notes in accordance with the provisions of the
Indenture.

                                   ARTICLE VII

                    REPRESENTATIONS AND WARRANTIES; COVENANTS

         SECTION 7.1 Representations and Warranties of the Holders.

         The Holders from time to time, acting through the Purchase Contract
Agent as their attorney-in-fact (it being understood that the Purchase Contract
Agent shall not be liable for any representation or warranty made by or on
behalf of a Holder), hereby represent and warrant to the Collateral Agent, which
representations and warranties shall be deemed repeated on each day a Holder
Transfers Collateral, that:

         (a)      such Holder has the power to grant a security interest in and
lien on the Collateral;

         (b)      such Holder is the sole beneficial owner of the Collateral
and, in the case of Collateral delivered in physical form, is the sole holder of
such Collateral and is the sole beneficial owner of, or has the right to
Transfer, the Collateral it Transfers to the Collateral Agent, free and clear of
any security interest, lien, encumbrance, call, liability to pay money or other
restriction other than the security interest and lien granted under Section 2.1;

         (c)      upon the Transfer of the Collateral to the Collateral Account,
the Collateral Agent, for the benefit of the Company, will have a valid and
perfected first priority security interest therein (assuming that any central
clearing operation or any Intermediary or other entity not within the control of
the Holder involved in the Transfer of the Collateral, including the Collateral
Agent, gives the notices and takes the action required of it hereunder and under
applicable law for perfection of that interest and assuming the establishment
and exercise of control pursuant to Section 2.2); and

         (d)      the execution and performance by the Holder of its obligations
under this Agreement will not result in the creation of any security interest,
lien or other encumbrance on the Collateral other than the security interest and
lien granted under Section 2.1 or violate any provision of any existing law or
regulation applicable to it or of any mortgage, charge, pledge, indenture,
contract or undertaking to which it is a party or which is binding on it or any
of its assets.

         SECTION 7.2 Representations and Warranties of the Collateral Agent,
                       Custodial Agent and Securities Intermediary.

         The Collateral Agent, Custodial Agent and Securities Intermediary (each
an "Agent") hereby represents and warrants:

         (a)      The Collateral Agent, Custodial Agent and Securities
Intermediary is a trust company duly incorporated and validly existing under the
laws of the State of [_____];

         (b)      The execution, delivery and performance by the Collateral
Agent, the Custodial Agent and the Securities Intermediary of this Agreement
have each been duly authorized by all necessary corporate action on the part of
each such Agent; this Agreement has been duly executed and delivered by the
Collateral Agent, the Custodial Agent and the Securities Intermediary and
constitutes a valid and legally binding obligation of each of the Agents,
enforceable against such Agents in accordance with its terms, subject, as to
enforcement, to bankruptcy, insolvency, reorganization and other laws of general
applicability relating to or affecting creditors' rights and to general equity
principles;

                                      -13-

<PAGE>

         (c)      The execution, delivery and performance by the Collateral
Agent, the Custodial Agent and the Securities Intermediary of this Agreement do
not violate or constitute a breach of the articles of incorporation or by-laws
of any of such Agents; and

         (d)      No consent of any federal or state banking authority having
regulatory authority over the Agents in their individual capacity is required
for the execution and delivery of, or performance by the Agents of their
respective obligations under, this Agreement.

         SECTION 7.3 Covenants.

         The Holders from time to time, acting through the Purchase Contract
Agent as their attorney-in-fact (it being understood that the Purchase Contract
Agent shall not be liable for any covenant made by or on behalf of a Holder),
hereby covenant to the Collateral Agent that for so long as the Collateral
remains subject to the Pledge:

         (a)      neither the Purchase Contract Agent nor such Holders will
create or purport to create or allow to subsist any mortgage, charge, lien,
pledge or any other security interest whatsoever over the Collateral or any part
of it other than pursuant to this Agreement; and

         (b)      neither the Purchase Contract Agent nor such Holders will sell
or otherwise dispose (or attempt to dispose) of the Collateral or any part of it
except for the beneficial interest therein, subject to the pledge hereunder,
transferred in connection with the Transfer of the Units.

                                  ARTICLE VIII

                              THE COLLATERAL AGENT

         SECTION 8.1 Appointment, Powers and Immunities.

         (a)      The Collateral Agent shall act as agent for the Company
hereunder with such powers as are specifically vested in the Collateral Agent by
the terms of this Agreement, together with such other powers as are reasonably
incidental thereto. Each of the Collateral Agent, the Custodial Agent and the
Securities Intermediary:

         (i)      shall have no duties or responsibilities except those
                  expressly set forth in this Agreement and no implied covenants
                  or obligations shall be inferred from this Agreement against
                  any of them, nor shall any of them be bound by the provisions
                  of any agreement by any party hereto beyond the specific terms
                  hereof;

         (ii)     shall not be responsible for any recitals contained in this
                  Agreement, or in any certificate or other document referred to
                  or provided for in, or received by it under, this Agreement,
                  the Units or the Purchase Contract Agreement, or for the
                  value, validity, effectiveness, genuineness, enforceability or
                  sufficiency of this Agreement (other than as against the
                  Collateral Agent), the Units or the Purchase Contract
                  Agreement or any other document referred to or provided for
                  herein or therein or for any failure by the Company or any
                  other Person (except the Collateral Agent, the Custodial Agent
                  or the Securities Intermediary, as the case may be) to perform
                  any of its obligations hereunder or thereunder or, except as
                  expressly required hereby, for the existence, validity,
                  perfection, priority or maintenance of any security interest
                  created hereunder;

                                      -14-

<PAGE>

         (iii)    shall not be required to initiate or conduct any litigation or
                  collection proceedings hereunder (except in the case of the
                  Collateral Agent, pursuant to directions furnished under
                  Section 8.2, subject to Section 8.6);

         (iv)     shall not be responsible for any action taken or omitted to be
                  taken by it hereunder or under any other document or
                  instrument referred to or provided for herein or in connection
                  herewith or therewith, except for its own negligence, bad
                  faith or willful misconduct; and

         (v)      shall not be required to advise any party as to selling or
                  retaining, or taking or refraining from taking any action with
                  respect to, the Units or other property deposited hereunder.

Subject to the foregoing, during the term of this Agreement, each of the
Collateral Agent, the Custodial Agent and the Securities Intermediary, in
connection with the safekeeping and preservation of the Collateral hereunder,
shall use the same standard of care it applies for similar property held for its
own account.

         (b)      No provision of this Agreement shall require the Collateral
Agent, the Custodial Agent or the Securities Intermediary to expend or risk its
own funds or otherwise incur any financial liability in the performance of any
of its duties hereunder. In no event shall the Collateral Agent, the Custodial
Agent or the Securities Intermediary be liable for any amount in excess of the
value of the Collateral. Notwithstanding the foregoing, the Collateral Agent,
the Custodial Agent, the Purchase Contract Agent and Securities Intermediary,
each in its individual capacity, hereby waive any right of set-off, banker's
lien, liens or perfection rights as securities intermediary or any counterclaim
with respect to any of the Collateral.

         (c)      The Collateral Agent, Custodial Agent and Securities
Intermediary shall have no liability whatsoever for the action or inaction of
any Clearing Agency or any book-entry system thereof. In no event shall any
Clearing Agency or any book-entry system thereof be deemed an agent or
subcustodian of the Collateral Agent, Custodial Agent and Securities
Intermediary.

         SECTION 8.2 Instructions of the Company.

         The Company shall have the right, by one or more instruments in writing
executed and delivered to the Collateral Agent, the Custodial Agent or the
Securities Intermediary, as the case may be, to direct the time, method and
place of conducting any proceeding for the realization of any right or remedy
available to the Collateral Agent, the Custodial Agent or the Securities
Intermediary, as the case may be, or of exercising any power conferred on the
Collateral Agent, the Custodial Agent or the Securities Intermediary, as the
case may be, or to direct the taking or refraining from taking of any action
authorized by this Agreement; provided that (i) such direction shall not
conflict with the provisions of any law or of this Agreement and (ii) the
Collateral Agent, the Custodial Agent and the Securities Intermediary shall each
receive indemnity reasonably satisfactory to it as provided herein. Nothing in
this Section 8.2 shall impair the right of each of the Collateral Agent, the
Custodial Agent or the Securities Intermediary in its discretion to take any
action or omit to take any action which it deems proper and which is not
inconsistent with such direction.

         SECTION 8.3 Reliance.

         Each of the Securities Intermediary, the Custodial Agent and the
Collateral Agent shall be entitled conclusively to rely upon any certification,
order, judgment, instructions, opinion, notice or other communication
(including, without limitation, any thereof by telephone or facsimile)
reasonably believed by it to be genuine and correct and to have been signed or
sent by or on behalf of the proper Person or Persons (without being required to
determine the correctness of any fact stated therein), and upon advice

                                      -15-

<PAGE>

and statements of legal counsel and other experts selected by the Collateral
Agent, the Custodial Agent or the Securities Intermediary, as the case may be.
As to any matters not expressly provided for by this Agreement, the Collateral
Agent, the Custodial Agent and the Securities Intermediary shall in all cases be
fully protected in acting, or in refraining from acting, hereunder in accordance
with instructions given by the Company in accordance with this Agreement.

         SECTION 8.4 Rights in Other Capacities.

         The Collateral Agent, the Custodial Agent and the Securities
Intermediary and their affiliates may (without having to account therefor to the
Company) accept deposits from, lend money to, make their investments in and
generally engage in any kind of banking, trust or other business with the
Purchase Contract Agent, any Holder of Units and any holder of Separate Notes
(and any of their respective subsidiaries or affiliates) as if it were not
acting as the Collateral Agent, the Custodial Agent or the Securities
Intermediary, as the case may be, and the Collateral Agent, the Custodial Agent
and the Securities Intermediary and their affiliates may accept fees and other
consideration from the Purchase Contract Agent, any Holder of Units or any
holder of Separate Notes without having to account for the same to the Company;
provided that each of the Securities Intermediary, the Custodial Agent and the
Collateral Agent covenants and agrees with the Company that it shall not accept,
receive or permit there to be created in favor of itself (and waives any right
of set-off or banker's lien with respect to) and shall take no affirmative
action to permit there to be created in favor of any other Person, any security
interest, lien or other encumbrance of any kind in or upon the Collateral and
the Collateral shall not be commingled with any other assets of any such Person.

         SECTION 8.5 Non-Reliance on Collateral Agent.

         None of the Securities Intermediary, the Custodial Agent or the
Collateral Agent shall be required to keep itself informed as to the performance
or observance by the Purchase Contract Agent or any Holder of Units of this
Agreement, the Purchase Contract Agreement, the Units or any other document
referred to or provided for herein or therein or to inspect the properties or
books of the Purchase Contract Agent or any Holder of Units. The Collateral
Agent, the Custodial Agent and the Securities Intermediary shall not have any
duty or responsibility to provide the Company or the Remarketing Agent with any
credit or other information concerning the affairs, financial condition or
business of the Purchase Contract Agent, any Holder of Units or any holder of
Separate Notes (or any of their respective subsidiaries or affiliates) that may
come into the possession of the Collateral Agent, the Custodial Agent or the
Securities Intermediary or any of their respective affiliates.

         SECTION 8.6 Compensation and Indemnity.

         The Company agrees:

         (a)      to pay each of the Collateral Agent, the Custodial Agent and
the Securities Intermediary from time to time such compensation as shall be
agreed in writing between the Company and the Collateral Agent, Custodial Agent
or the Securities Intermediary, as the case may be, for all services rendered by
each of them hereunder; and

         (b)      to indemnify the Collateral Agent, the Custodial Agent and the
Securities Intermediary for, and to hold each of them harmless from and against,
any loss, liability or reasonable out-of-pocket expense incurred without
negligence, willful misconduct or bad faith on its part, arising out of or in
connection with the acceptance or administration of its powers and duties under
this Agreement, including the reasonable out-of-pocket costs and expenses
(including reasonable fees and expenses of counsel) of defending itself against
any claim or liability in connection with the exercise or performance of such
powers and duties or collecting such amounts. The Collateral Agent, the
Custodial Agent and the Securities Intermediary shall each promptly notify the
Company of any third party claim which may give

                                      -16-

<PAGE>

rise to the indemnity hereunder and give the Company the opportunity to control
the defense of such claim with counsel reasonably satisfactory to the
indemnified party, provided no conflict of interest exists, and if the Company
so elects to assume such defense, the Company shall in good faith defend the
Collateral Agent, the Custodial Agent or the Securities Intermediary (in which
case all attorney's fees and expenses shall be borne by the Company). No
compromise or settlement of any claims may be effected by any party without the
other parties' consent unless (i) there is no finding or omission of any
violation of law and no effect on any other claims that may be made against any
of such other parties and (ii) the sole relief provided is monetary damages that
are paid in full by the party seeking the compromise or settlement.

         SECTION 8.7 Failure to Act.

         In the event of any ambiguity in the provisions of this Agreement or
any dispute between or conflicting claims by or among the parties hereto or any
other Person with respect to any funds or property deposited hereunder, the
Collateral Agent, Custodial Agent and the Securities Intermediary shall be
entitled, after prompt notice to the Company and the Purchase Contract Agent, at
its sole option, to refuse to comply with any and all claims, demands or
instructions with respect to such property or funds so long as such dispute or
conflict shall continue, and neither the Collateral Agent, Custodial Agent nor
the Securities Intermediary shall be or become liable in any way to any of the
parties hereto for its failure or refusal to comply with such conflicting
claims, demands or instructions. The Collateral Agent, Custodial Agent and the
Securities Intermediary shall be entitled to refuse to act until either (i) such
conflicting or adverse claims or demands shall have been finally determined by a
court of competent jurisdiction or settled by agreement between the conflicting
parties as evidenced in a writing, reasonably satisfactory to the Collateral
Agent, Custodial Agent or the Securities Intermediary, as the case may be, or
(ii) the Collateral Agent, the Custodial Agent or the Securities Intermediary,
as the case may be, shall have received security or an indemnity reasonably
satisfactory to the Collateral Agent, Custodial Agent or the Securities
Intermediary, as the case may be, sufficient to save the Collateral Agent,
Custodial Agent or the Securities Intermediary, as the case may be, harmless
from and against any and all loss, liability or reasonable out-of-pocket expense
which the Collateral Agent, Custodial Agent or the Securities Intermediary, as
the case may be, may incur by reason of its acting without bad faith, willful
misconduct or negligence. The Collateral Agent, Custodial Agent or the
Securities Intermediary may in addition elect to commence an interpleader action
or seek other judicial relief or orders as the Collateral Agent, Custodial Agent
or the Securities Intermediary, as the case may be, may deem necessary.
Notwithstanding anything contained herein to the contrary, neither the
Collateral Agent, Custodial Agent nor the Securities Intermediary shall be
required to take any action that is in its reasonable opinion contrary to law or
to the terms of this Agreement, or which would in its reasonable opinion subject
it or any of its officers, employees or directors to liability.

         SECTION 8.8 Resignation.

         Subject to the appointment and acceptance of a successor Collateral
Agent, Custodial Agent or Securities Intermediary, as provided below, (a) the
Collateral Agent, Custodial Agent or the Securities Intermediary may resign at
any time by giving notice thereof to the Company and the Purchase Contract Agent
as attorney-in-fact for the Holders of Units, (b) the Collateral Agent,
Custodial Agent or the Securities Intermediary may be removed at any time by the
Company by notice to the Purchase Contract Agent and the Collateral Agent, the
Custodial Agent and the Securities Intermediary and (c) if the Collateral Agent,
Custodial Agent or the Securities Intermediary fails to perform any of its
material obligations hereunder in any material respect for a period of not less
than 20 days after receiving written notice of such failure by the Purchase
Contract Agent and such failure shall be continuing, the Collateral Agent,
Custodial Agent or the Securities Intermediary may be removed by the Purchase
Contract Agent. The Purchase Contract Agent shall promptly notify the Company of
any removal of the Collateral Agent, the Custodial Agent or the Securities
Intermediary pursuant to clause (c) of the immediately preceding sentence. Upon
any such resignation or removal, the Company shall have the right to appoint a
successor Collateral Agent, Custodial Agent or Securities Intermediary, as the
case may be. If no successor Collateral Agent, Custodial Agent or Securities
Intermediary, as the case may be, shall have been so

                                      -17-

<PAGE>

appointed and shall have accepted such appointment within 30 days after any
notice of such resignation or such removal, then the retiring Collateral Agent,
Custodial Agent or Securities Intermediary, as the case may be, may at the
Company's expense petition any court of competent jurisdiction for the
appointment of a successor Collateral Agent, Custodial Agent or Securities
Intermediary, as the case may be. Upon removal of the Collateral Agent,
Custodial Agent or Securities Intermediary, no fees paid to the retiring
Collateral Agent, Custodial Agent or Securities Intermediary pursuant to Section
8.6(a) of this Agreement shall be refunded. Each successor Collateral Agent,
Custodial Agent and the Securities Intermediary shall be a bank which has an
office or agency in New York, New York with a combined capital and surplus of at
least $50,000,000. Upon the acceptance of any appointment as Collateral Agent,
Custodial Agent or Securities Intermediary, as the case may be, hereunder by a
successor Collateral Agent, Custodial Agent or Securities Intermediary, as the
case may be, such successor shall thereupon succeed to and become vested with
all the rights, powers, privileges and duties of the retiring Collateral Agent,
Custodial Agent or Securities Intermediary, as the case may be, and the retiring
Collateral Agent, Custodial Agent or Securities Intermediary, as the case may
be, shall take all appropriate action to transfer any money and property held by
it hereunder (including the Collateral) to such successor. The retiring
Collateral Agent, Custodial Agent or Securities Intermediary shall, upon such
succession, be discharged from its duties and obligations as Collateral Agent,
Custodial Agent or Securities Intermediary hereunder. After any retiring
Collateral Agent's, Custodial Agent's or Securities Intermediary's resignation
hereunder as Collateral Agent, Custodial Agent or Securities Intermediary, the
provisions of this Section 8.8 shall continue in effect for its benefit in
respect of any actions taken or omitted to be taken by it while it was acting as
the Collateral Agent, Custodial Agent or Securities Intermediary. Any
resignation or removal of the Collateral Agent hereunder shall be deemed for all
purposes of this Agreement as the simultaneous resignation or removal of the
Custodial Agent and the Securities Intermediary hereunder.

         Any corporation into which the Collateral Agent, the Custodial Agent or
the Securities Intermediary, in its individual capacity, may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Collateral Agent in
its individual capacity shall be a party, or any corporation to which
substantially all the corporate trust business of the Collateral Agent in its
individual capacity may be transferred, shall be the Collateral Agent, the
Custodial Agent, or the Securities Intermediary, as the case may be,
respectively, under this Agreement without further act.

         SECTION 8.9 Right to Appoint Agent or Advisor.

         The Collateral Agent shall have the right to appoint agents or advisors
in connection with any of its duties hereunder, and the Collateral Agent shall
not be liable for any action taken or omitted by, or in reliance upon the advice
of, such agents or advisors selected in good faith. The appointment of agents
(other than legal counsel) pursuant to this Section 8.9 shall be subject to
prior consent of the Company.

         SECTION 8.10 Survival.

         The provisions of this Article VIII shall survive termination of this
Agreement and the resignation or removal of the Collateral Agent, the Custodial
Agent or the Securities Intermediary.

         SECTION 8.11 Exculpation.

         Anything in this Agreement to the contrary notwithstanding, in no event
shall any of the Collateral Agent, the Custodial Agent or the Securities
Intermediary or their officers, employees or agents be liable under this
Agreement to any third party for indirect, special, punitive or consequential
loss or damage of any kind whatsoever, including lost profits or loss of
business, relating to, arising from or in connection with this Agreement,
whether or not the likelihood of such loss or damage was known to the Collateral
Agent, the Custodial Agent or the Securities Intermediary, or any of them,
incurred without any act or deed

                                      -18-

<PAGE>

that is found to be attributable to negligence, bad faith or willful misconduct
on the part of the Collateral Agent, the Custodial Agent or the Securities
Intermediary.

                                   ARTICLE IX

                                    AMENDMENT

         SECTION 9.1 Amendment Without Consent of Holders.

         Without the consent of any Holders or the holders of any Separate
Notes, the Company, the Collateral Agent, the Custodial Agent, the Securities
Intermediary and the Purchase Contract Agent, at any time and from time to time,
may amend this Agreement, in form satisfactory to the Company, the Collateral
Agent, the Custodial Agent, the Securities Intermediary and the Purchase
Contract Agent, for any of the following purposes:

         (i)      to evidence the succession of another Person to the Company,
                  and the assumption by any such successor of the covenants of
                  the Company; or

         (ii)     to add to the covenants of the Company for the benefit of the
                  Holders, or to surrender any right or power herein conferred
                  upon the Company so long as such covenants or such surrender
                  do not adversely affect the validity, perfection or priority
                  of the security interests granted or created hereunder; or

         (iii)    to evidence and provide for the acceptance of appointment
                  hereunder by a successor Collateral Agent, Custodial Agent,
                  Securities Intermediary or Purchase Contract Agent; or

         (iv)     to cure any ambiguity, to correct or supplement any provisions
                  herein which may be inconsistent with any other such
                  provisions herein, or to make any other provisions with
                  respect to such matters or questions arising under this
                  Agreement, provided such action shall not adversely affect the
                  interests of the Holders.

         SECTION  9.2 Amendment with Consent of Holders.

         With the consent of the Holders of not less than a majority of the
Purchase Contracts at the time outstanding, by Act of said Holders delivered to
the Company, the Purchase Contract Agent or the Collateral Agent, as the case
may be, the Company, when duly authorized, the Purchase Contract Agent, the
Collateral Agent, the Custodial Agent and the Securities Intermediary may amend
this Agreement for the purpose of modifying in any manner the provisions of this
Agreement or the rights of the Holders in respect of the Units; provided that no
such supplemental agreement shall, without the consent of the Holder of each
Outstanding Unit adversely affected thereby,

         (i)      change the amount or type of Collateral underlying a Unit
                  (except for the rights of holders of Normal Units to
                  substitute the Treasury Securities for the Pledged Notes or
                  the Pledged Treasury Consideration, as the case may be, or the
                  rights of Holders of Stripped Units to substitute Notes or the
                  appropriate Treasury Consideration, as applicable, for the
                  Pledged Treasury Securities), impair the right of the Holder
                  of any Unit to receive distributions on the underlying
                  Collateral or otherwise adversely affect the Holder's rights
                  in or to such Collateral; or

                                      -19-

<PAGE>

         (ii)     otherwise effect any action that would require the consent of
                  the Holder of each Outstanding Unit affected thereby pursuant
                  to the Purchase Contract Agreement if such action were
                  effected by an agreement supplemental thereto; or

         (iii)    reduce the percentage of Purchase Contracts the consent of
                  whose Holders is required for any such amendment.

It shall not be necessary for any Act of Holders under this Section to approve
the particular form of any proposed amendment, but it shall be sufficient if
such Act shall approve the substance thereof.

         SECTION 9.3 Execution of Amendments.

         In executing any amendment permitted by this Article IX, the Collateral
Agent, the Custodial Agent, the Securities Intermediary and the Purchase
Contract Agent shall be entitled to receive and (subject to Section 8.1 hereof,
with respect to the Collateral Agent, and Section 7.1 of the Purchase Contract
Agreement, with respect to the Purchase Contract Agent) shall be fully protected
in relying upon, an Opinion of Counsel stating that the execution of such
amendment is authorized or permitted by this Agreement and that all conditions
precedent, if any, to the execution and delivery of such amendment have been
satisfied and, in the case of an amendment pursuant to Section 9.1, that such
amendment does not adversely affect the validity, perfection or priority of the
security interests granted or created hereunder.

         SECTION 9.4 Effect of Amendments.

         Upon the execution of any amendment under this Article IX, this
Agreement shall be modified in accordance therewith, and such amendment shall
form a part of this Agreement for all purposes; and every Holder of Certificates
theretofore or thereafter authenticated, executed on behalf of the Holders and
delivered under the Purchase Contract Agreement shall be bound thereby.

         SECTION 9.5 Reference to Amendments.

         Certificates authenticated, executed on behalf of the Holders and
delivered after the execution of any amendment pursuant to this Article IX may,
and shall if required by the Collateral Agent or the Purchase Contract Agent,
bear a notation in form approved by the Purchase Contract Agent as to any matter
provided for in such amendment. If the Company shall so determine, new
Certificates so modified as to conform, in the opinion of the Purchase Contract
Agent and the Company, to any such amendment may be prepared and executed by the
Company and authenticated, executed on behalf of the Holders and delivered by
the Purchase Contract Agent in accordance with the Purchase Contract Agreement
in exchange for outstanding Certificates.

                                    ARTICLE X

                                  MISCELLANEOUS

         SECTION 10.1 No Waiver.

         No failure on the part of any party hereto or any of its agents to
exercise, and no course of dealing with respect to, and no delay in exercising,
any right, power or remedy hereunder shall operate as a waiver thereof; nor
shall any single or partial exercise by any party hereto or any of its agents of
any right, power or remedy hereunder preclude any other or further exercise
thereof or the exercise of any other right, power or remedy. The remedies herein
are cumulative and are not exclusive of any remedies provided by law.

                                      -20-

<PAGE>

         SECTION 10.2 GOVERNING LAW.

         THIS AGREEMENT SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH
THE LAWS OF THE STATE OF NEW YORK. Without limiting the foregoing, the above
choice of law is expressly agreed to by the Securities Intermediary, the
Collateral Agent, the Custodial Agent and the Holders from time to time acting
through the Purchase Contract Agent, as their attorney-in-fact, in connection
with the establishment and maintenance of the Collateral Account, which law, for
purposes of the Code, shall be deemed to be the law governing all Security
Entitlements related thereto. In addition, such parties agree that, for purposes
of the Code, New York shall be the Securities Intermediary's jurisdiction. The
Company, the Collateral Agent and the Holders from time to time of the Units,
acting through the Purchase Contract Agent as their attorney-in-fact, hereby
submit to the non-exclusive jurisdiction of the United States District Court for
the Southern District of New York and of any New York state court sitting in the
Borough of Manhattan in New York City for the purposes of all legal proceedings
arising out of or relating to this Agreement or the transactions contemplated
hereby. The Company, the Collateral Agent and the Holders from time to time of
the Units, acting through the Purchase Contract Agent as their attorney-in-fact,
irrevocably waive, to the fullest extent permitted by applicable law, any
objection which they may now or hereafter have to the laying of the venue of any
such proceeding brought in such a court and any claim that any such proceeding
brought in such a court has been brought in an inconvenient forum.

         SECTION  10.3 Notices.

         Unless otherwise stated herein, all notices, requests, instructions,
consents and other communications provided for herein (including, without
limitation, any modifications of, or waivers or consents under, this Agreement)
shall be given or made in writing (including, without limitation, by telecopy)
delivered to the intended recipient at the "Address for Notices" specified below
its name on the signature pages hereof or, as to any party, at such other
address as shall be designated by such party in a notice to the other parties.
Except as otherwise provided in this Agreement, all such communications shall be
deemed to have been duly given when personally delivered or, in the case of a
mailed notice or notice transmitted by telecopier, upon receipt, in each case
given or addressed as aforesaid.

         SECTION 10.4 Successors and Assigns.

         This Agreement shall be binding upon and inure to the benefit of the
respective successors and assigns of the Company, the Collateral Agent, the
Custodial Agent, the Securities Intermediary and the Purchase Contract Agent,
and the Holders from time to time of the Units, by their acceptance of the same,
shall be deemed to have agreed to be bound by the provisions hereof and to have
ratified the agreements of, and the grant of the Pledge hereunder by, the
Purchase Contract Agent.

         SECTION 10.5 Counterparts.

         This Agreement may be executed in any number of counterparts, all of
which taken together shall constitute one and the same instrument, and any of
the parties hereto may execute this Agreement by signing any such counterpart.

         SECTION  10.6 Severability.

         If any provision hereof is invalid and unenforceable in any
jurisdiction, then, to the fullest extent permitted by law, (i) the other
provisions hereof shall remain in full force and effect in such jurisdiction and
shall be liberally construed in order to carry out the intentions of the parties
hereto as nearly as may be possible and (ii) the invalidity or unenforceability
of any provision hereof in any jurisdiction shall not affect the validity or
enforceability of such provision in any other jurisdiction.

                                      -21-

<PAGE>

         SECTION 10.7 Expenses, Etc.

         The Company agrees to reimburse the Collateral Agent, the Securities
Intermediary and the Custodial Agent for:

         (a)      all reasonable out-of-pocket costs and all reasonable expenses
of the Collateral Agent, the Custodial Agent and the Securities Intermediary
(including, without limitation, the reasonable fees and expenses of counsel to
the Collateral Agent, the Custodial Agent and the Securities Intermediary), in
connection with (i) the negotiation, preparation, execution and delivery or
performance of this Agreement and (ii) any modification, supplement or waiver of
any of the terms of this Agreement;

         (b)      all reasonable costs and expenses of the Collateral Agent, the
Custodial Agent and the Securities Intermediary (including, without limitation,
reasonable fees and expenses of counsel) in connection with (i) any enforcement
or proceedings resulting or incurred in connection with causing any Holder of
Units to satisfy its obligations under the Purchase Contracts forming a part of
the Units and (ii) the enforcement of this Section 10.7; and

         (c)      all transfer, stamp, documentary or other similar taxes,
assessments or charges levied by any governmental or revenue authority in
respect of this Agreement or any other document referred to herein and all
costs, expenses, taxes, assessments and other charges, if any, incurred in
connection with any filing, registration, recording or perfection of any
security interest to the extent contemplated hereby.

         SECTION 10.8 Security Interest Absolute.

         All rights of the Collateral Agent and security interests hereunder,
and all obligations of the Holders from time to time hereunder, shall be
absolute and unconditional irrespective of:

         (a)      any lack of validity or enforceability of any provision of the
Purchase Contracts or the Units or any other agreement or instrument relating
thereto;

         (b)      any change in the time, manner or place of payment of, or any
other term of, or any increase in the amount of, all or any of the obligations
of Holders of Units under the related Purchase Contracts, or any other amendment
or waiver of any term of, or any consent to any departure from any requirement
of, the Purchase Contract Agreement or any Purchase Contract or any other
agreement or instrument relating thereto; or

         (c)      any other circumstance which might otherwise constitute a
defense available to, or discharge of, a borrower, a guarantor or a pledgor.

                                      -22-

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed as of the day and year first above written.

                                    UNION PLANTERS CORPORATION

                                    By:_________________________________________
                                       Name:
                                       Title:

                                    Address for Notices:

                                    Union Planters Corporation
                                    6200 Poplar Avenue
                                    Memphis, Tennessee 38119
                                    Attention: E. James House, Jr., Secretary
                                    and Manager of the Legal Department
                                    Telecopy:  (901) 580-5768
                                    Telephone: (901) 580-5770

                                    [__________],
                                    as Purchase Contract Agent and
                                    as attorney-in-fact of the Holders
                                    from time to time of the Units

                                    By:_________________________________________
                                       Name:
                                       Title:

                                    Address for Notices:

                                    [__________],
                                    [__________],
                                    Attention: [___________]
                                    Telecopy: (___) ___-____
                                    Telephone: (___) ___-____

<PAGE>

                                    [__________],
                                    as Collateral Agent, Custodial Agent
                                    and Securities Intermediary

                                    By:_________________________________________
                                       Name:
                                       Title:

                                    Address for Notices:

                                    [__________],
                                    [__________],
                                    Attention: [_________]
                                    Telecopy: (___) ___-____
                                    Telephone: (___) ___-____

<PAGE>

                                    EXHIBIT A

                       INSTRUCTION FROM PURCHASE CONTRACT
                            AGENT TO COLLATERAL AGENT

[________]
[________]

Attention: Corporate Trust Administration

                  Re: [___]% [_________________]
                      Units of Union Planters Corporation (the "Company")

         We hereby notify you in accordance with Section [4.1] [4.2] of the
Pledge Agreement, dated as of [_____], 200[_], (the "Pledge Agreement"), among
the Company, yourselves, as Collateral Agent, Custodial Agent and Securities
Intermediary and ourselves, as Purchase Contract Agent and as attorney-in-fact
for the holders of [Normal Units] [Stripped Units] from time to time, that the
holder of Units listed below (the "Holder") has elected to substitute [$_____
aggregate principal amount of Treasury Securities (CUSIP No. __________)]
[$_______ aggregate principal amount of Notes or $_____ aggregate principal
amount of Treasury Consideration (CUSIP No. __________)] in exchange for the
related [Pledged Notes or Pledged Treasury Consideration] [Pledged Treasury
Securities] held by you in accordance with the Pledge Agreement and has
delivered to us a notice stating that the Holder has Transferred [Treasury
Securities] [Notes or the Treasury Consideration] to you, as Collateral Agent.
We hereby instruct you, upon receipt of such [Pledged Treasury Securities]
[Pledged Notes or Pledged Treasury Consideration], to release the [Notes or the
Treasury Consideration] [Treasury Securities] related to such [Normal Units]
[Stripped Units] to us in accordance with the Holder's instructions. Capitalized
terms used herein but not defined shall have the meaning set forth in the Pledge
Agreement.

Date: ________________

                                            [________],
                                            as Purchase Contract Agent

                                            By: ______________________________
                                                Name:
                                                Title:

                                       A-1

<PAGE>

Please print name and address of Registered Holder electing to substitute
[Treasury Securities] [Notes or Treasury Consideration] for the [Pledged Notes
or the Pledged Treasury Consideration] [Pledged Treasury Securities]:

Name

Address

Social Security or other Taxpayer Identification
Number, if any

                                       A-2

<PAGE>

                                    EXHIBIT B

                     INSTRUCTION TO PURCHASE CONTRACT AGENT

[________],
   as Purchase Contract Agent

[________]

Attention: [__________]

                  Re: [___]% [______________]
                      Units of Union Planters Corporation (the "Company")

         The undersigned Holder hereby notifies you that it has delivered to
[________], as Collateral Agent, [$_______ aggregate principal amount of
Treasury Securities (CUSIP No. __________)] [$_______ aggregate principal amount
of Notes or $_____ principal amount of Treasury Consideration (CUSIP No.
__________)] in exchange for the related [Pledged Notes or Pledged Treasury
Consideration] [Pledged Treasury Securities] held by the Collateral Agent, in
accordance with Section 4.1 of the Pledge Agreement, dated as of [_____], 200[_]
(the "Pledge Agreement"), between you, the Company and the Collateral Agent. The
undersigned Holder hereby instructs you to instruct the Collateral Agent to
release to you on behalf of the undersigned Holder the [Pledged Notes or the
Pledged Treasury Consideration] [Pledged Treasury Securities] related to such
[Normal Units] [Stripped Units]. Capitalized terms used herein but not defined
shall have the meaning set forth in the Pledge Agreement.

            Date: __________       Signature: ______________________________

                                   Signature Guarantee: ____________________

                                       B-1

<PAGE>

Please print name and address of Registered Holder electing to substitute
[Treasury Securities] [Notes or Treasury Consideration] for the [Pledged Notes
or the Pledged Treasury Consideration] [Pledged Treasury Securities]:

Name

Address

Social Security or other Taxpayer Identification
Number, if any

                                       B-2

<PAGE>

                                    EXHIBIT C

              INSTRUCTION TO CUSTODIAL AGENT REGARDING REMARKETING

[________]
[________]

Attention: Corporate Trust Administration

                  Re: Notes of Union Planters Corporation

         The undersigned hereby notifies you in accordance with Section 4.5(d)
of the Pledge Agreement, dated as of [_____], 200[_] (the "Pledge Agreement"),
among Union Planters Corporation, yourselves, as Collateral Agent, Securities
Intermediary and Custodial Agent, and [________], as Purchase Contract Agent and
as attorney-in-fact for the Holders of Normal Units and Stripped Units from time
to time, that the undersigned elects to deliver on the fourth Business Day
immediately preceding the first day of the Remarketing Period commencing on
__________, 200[_] $__________ aggregate principal amount of Notes for delivery
to the Remarketing Agent for remarketing pursuant to Section 4.5(d) of the
Pledge Agreement. The undersigned will, upon request of the Remarketing Agent,
execute and deliver any additional documents deemed by the Remarketing Agent or
by the Company to be necessary or desirable to complete the sale, assignment and
transfer of the Notes tendered hereby.

         The undersigned hereby instructs you, upon receipt of the proceeds of
such remarketing from the Remarketing Agent, net of amounts payable to the
Remarketing Agent in accordance with the Pledge Agreement, to deliver such
proceeds to the undersigned in accordance with the instructions indicated herein
under "A. Payment Instructions." The undersigned hereby instructs you, in the
event of [a/the Last] Failed Remarketing upon receipt of the Notes tendered
herewith from the Remarketing Agent, to deliver such Notes to the person(s) and
the address(es) indicated herein under "B. Delivery Instructions."

         With this notice, the undersigned hereby (i) represents and warrants
that the undersigned has full power and authority to tender, sell, assign and
transfer the Notes tendered hereby and that the undersigned is the record owner
of any Notes tendered herewith in physical form or a participant in The
Depository Trust Company ("DTC") and the beneficial owner of any Notes tendered
herewith by book-entry transfer to your account at DTC and (ii) agrees to be
bound by the terms and conditions of Section 4.5(d) of the Pledge Agreement.
Capitalized terms used herein but not defined shall have the meaning set forth
in the Pledge Agreement.

Date: _______________                Signature: _____________________________

                                     Signature Guarantee: ___________________

                                       C-1

<PAGE>

Name:    ________________________________
         (Please Print)

Address: ________________________________
         (Please Print)
Country:

Zip Code:

Telecopy (include country code if outside U.S.):

Telephone (include country code if outside U.S.):

(Tax Identification or Social Security Number):

A. PAYMENT INSTRUCTIONS

Proceeds of the remarketing should be paid by check in the name of the person(s)
set forth below and mailed to the address set forth below.

Name(s): ________________________________
         (Please Print)

Address: ________________________________
         (Please Print)
Zip Code:

Country:

Telecopy (include country code if outside U.S.):

Telephone (include country code if outside U.S.):

(Tax Identification or Social Security Number):

                                       C-2

<PAGE>

B. DELIVERY INSTRUCTIONS

In the event of [a/the Last] Failed Remarketing, Notes which are in physical
form should be delivered to the person(s) set forth below and mailed to the
address set forth below.

Name(s): ________________________________
         (Please Print)

Address: ________________________________
          (Please Print)
Zip Code:

Country:

Telecopy (include country code if outside U.S.):

Telephone (include country code if outside U.S.):

(Tax Identification or Social Security Number):

In the event of [a/the Last] Failed Remarketing, Notes which are in book-entry
form should be credited to the account at The Depository Trust Company set forth
below.

Name of Account Party:                        DTC Account Number:

                                       C-3

<PAGE>

                                    EXHIBIT D

                    INSTRUCTION TO CUSTODIAL AGENT REGARDING
                           WITHDRAWAL FROM REMARKETING

[________]
[________]

Attention: [_____________]

                  Re: Notes of Union Planters Corporation

         The undersigned hereby notifies you in accordance with Section 4.5(d)
of the Pledge Agreement, dated as of [________], 200[_] (the "Pledge
Agreement"), among Union Planters Corporation, yourselves, as Collateral Agent,
Securities Intermediary and Custodial Agent, and [________], as Purchase
Contract Agent and as attorney-in-fact for the Holders of Normal Units and
Stripped Units from time to time, that the undersigned elects to withdraw the
$_____ aggregate principal amount of Notes delivered to the Custodial Agent on
___________, 200[_] for remarketing pursuant to Section 4.5(d) of the Pledge
Agreement. The undersigned hereby instructs you to return such Notes to the
undersigned in accordance with the undersigned's instructions. With this notice,
the undersigned hereby agrees to be bound by the terms and conditions of Section
4.5(d) of the Pledge Agreement. Capitalized terms used herein but not defined
shall have the meaning set forth in the Pledge Agreement.

Date: _______________                Signature: _________________________

                                     Signature Guarantee:

Name(s): ________________________________
         (Please Print)

Address: ________________________________
         (Please Print)
Zip Code:

Country:

Telecopy (include country code if outside U.S.):

Telephone (include country code if outside U.S.):

(Tax Identification or Social Security Number):

                                       D-1

<PAGE>

A. DELIVERY INSTRUCTIONS

In the event of [a/the Last] Failed Remarketing, Notes which are in physical
form should be delivered to the person(s) set forth below and mailed to the
address set forth below.

Name(s): ________________________________
         (Please Print)

Address: ________________________________
         (Please Print)
Zip Code:

Country:

Telecopy (include country code if outside U.S.):

Telephone (include country code if outside U.S.):

(Tax Identification or Social Security Number):

In the event of [a/the Last] Failed Remarketing, Notes which are in book-entry
form should be credited to the account at The Depository Trust Company set forth
below.

Name of Account Party:                         DTC Account Number:

                                       D-2<PAGE>

                                                                    EXHIBIT 4.15

                              CERTIFICATE OF TRUST

                                       OF

                         UNION PLANTERS CAPITAL TRUST B

         THIS CERTIFICATE OF TRUST of Union Planters Capital Trust B (the
"Trust"), dated August 13, 2003, is being duly executed and filed by the
undersigned, as trustees, to form a statutory trust under the Delaware Statutory
Trust Act (12 Del. C. ss. 3801 et seq.) (the "Act").

         1.       Name. The name of the statutory trust being formed hereby is
UNION PLANTERS CAPITAL TRUST B.

         2.       Delaware Trustee. The name and business address of the trustee
of the Trust, with a principal place of business in the State of Delaware, is
Bank One Delaware, Inc., Three Christiana Centre, 201 North Walnut Street,
Wilmington, Delaware 19801.

         3.       Effective Date. This Certificate of Trust shall be effective
upon its filing with the Secretary of State of Delaware.

         4.       Counterparts. This Certificate of Trust may be executed in one
or more counterparts.

                            [SIGNATURE PAGE FOLLOWS]

<PAGE>

         IN WITNESS WHEREOF, the undersigned, being the trustees of the Trust,
have duly executed this Certificate of Trust in accordance with Section
3811(a)(1) of the Act.

                           Bank One Delaware, Inc.,
                           not in its individual capacity but solely as Delaware
                           Trustee

                           By: /s/ Marla S. Roth
                           Name: Marla S. Roth
                           Title: Vice President

                           Bank One Trust Company, N.A.,
                           not in its individual capacity but solely as Property
                           Trustee

                           By: /s/ Marla S. Roth
                           Name: Marla S. Roth
                           Title: Vice President

                           /s/ John T. Crawford, Jr.
                           John T. Crawford, Jr.,
                           not in his individual capacity but solely as trustee

                                       -2-

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00055-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00055-of-00352.parquet"}]]