Document:

<Page>

                                                                 EXHIBIT 4.17(b)
                              CERTIFICATE OF TRUST
                                       OF
                                 CFB CAPITAL IV

        This Certificate of Trust of CFB CAPITAL IV (the "Trust"), dated
February 20, 2002, is being duly executed and filed by Wilmington Trust Company,
a Delaware banking corporation, and Thomas R. Anderson, an individual, as
trustees, to form a business trust under the Delaware Business Trust Act (12
Del. C. Section 3801 et seq.) (the "Act").

1.      NAME. The name of the business trust formed hereby is CFB Capital IV.

2.      DELAWARE TRUSTEE. The name and business address of the trustee of the
        Trust in the State of Delaware is Wilmington Trust Company, Rodney
        Square North, 1100 North Market Street, Wilmington, Delaware 19890-0001,
        Attn: Corporate Trust Administration.

3.      EFFECTIVE DATE. This Certificate of Trust shall be effective upon its
        filing.

        IN WITNESS WHEREOF, the undersigned, being all of the trustees of the
Trust, have executed this Certificate of Trust as of the date first above
written in accordance with Section 3811(a) of the Act.

                                            WILMINGTON TRUST COMPANY,
                                            as Trustee

                                            By:    /s/ Donald G. MacKelcan
                                               ---------------------------------
                                            Name:  Donald G. MacKelcan
                                            Title: Vice President

                                               /s/ Thomas R. Anderson
                                            ------------------------------------
                                            Thomas R. Anderson, as Trustee<Page>
                                                                 EXHIBIT 4.17(c)

                              CERTIFICATE OF TRUST
                                       OF
                                  CFB CAPITAL V

        This Certificate of Trust of CFB CAPITAL V (the "Trust"), dated February
20, 2002, is being duly executed and filed by Wilmington Trust Company, a
Delaware banking corporation, and Thomas R. Anderson, an individual, as
trustees, to form a business trust under the Delaware Business Trust Act (12
Del. C. Section 3801 et seq.) (the "Act").

1.      NAME. The name of the business trust formed hereby is CFB Capital V.

2.      DELAWARE TRUSTEE. The name and business address of the trustee of the
        Trust in the State of Delaware is Wilmington Trust Company, Rodney
        Square North, 1100 North Market Street, Wilmington, Delaware 19890-0001,
        Attn: Corporate Trust Administration.

3.      EFFECTIVE DATE. This Certificate of Trust shall be effective upon its
        filing.

        IN WITNESS WHEREOF, the undersigned, being all of the trustees of the
Trust, have executed this Certificate of Trust as of the date first above
written in accordance with Section 3811(a) of the Act.

                                            WILMINGTON TRUST COMPANY,
                                            as Trustee

                                            By:  /s/ Donald G. MacKelcan
                                               ---------------------------------
                                            Name:  Donald G. MacKelcan
                                            Title: Vice President

                                              /s/ Thomas R. Anderson
                                            ------------------------------------
                                            Thomas R. Anderson, as Trustee<Page>

                                                                    EXHIBIT 4.18

                                 CFB CAPITAL ___

                ===================================================
                              AMENDED AND RESTATED
                                 TRUST AGREEMENT
                ===================================================

                                      AMONG

                 COMMUNITY FIRST BANKSHARES, INC., AS DEPOSITOR

                  WILMINGTON TRUST COMPANY, AS PROPERTY TRUSTEE

                  WILMINGTON TRUST COMPANY, AS DELAWARE TRUSTEE

                    THE ADMINISTRATIVE TRUSTEES NAMED HEREIN

                                       AND

                     THE SEVERAL HOLDERS (AS DEFINED HEREIN)

                        DATED AS OF _______________, 2002

<Page>

                                TABLE OF CONTENTS

<Table>
<Caption>
                                                                                                           PAGE
---------------------------------------------------------------------------------------------------------------
<S>                <C>                                                                                       <C>
ARTICLE I. - DEFINED TERMS....................................................................................2
     SECTION 101.  DEFINITIONS................................................................................2

ARTICLE II. - ESTABLISHMENT OF THE TRUST.....................................................................10
     SECTION 201.  NAME......................................................................................10
     SECTION 202.  OFFICE OF THE DELAWARE TRUSTEE; PRINCIPAL PLACE OF BUSINESS...............................10
     SECTION 203.  INITIAL CONTRIBUTION OF TRUST PROPERTY; ORGANIZATIONAL EXPENSES...........................11
     SECTION 204.  ISSUANCE OF THE CAPITAL SECURITIES........................................................11
     SECTION 205.  ISSUANCE OF THE COMMON SECURITIES; SUBSCRIPTION
           AND PURCHASE OF JUNIOR SUBORDINATED DEBENTURES....................................................11
     SECTION 206.  DECLARATION OF TRUST......................................................................11
     SECTION 207.  AUTHORIZATION TO ENTER INTO CERTAIN TRANSACTIONS..........................................12
     SECTION 208.  ASSETS OF TRUST...........................................................................15
     SECTION 209.  TITLE TO TRUST PROPERTY...................................................................15

ARTICLE III. - PAYMENT ACCOUNT...............................................................................16
     SECTION 301.  PAYMENT ACCOUNT...........................................................................16

ARTICLE IV. - DISTRIBUTIONS; REDEMPTION......................................................................16
     SECTION 401.  DISTRIBUTIONS.............................................................................16
     SECTION 402.  REDEMPTION................................................................................17
     SECTION 403.  SUBORDINATION OF COMMON SECURITIES........................................................19
     SECTION 404.  PAYMENT PROCEDURES........................................................................20
     SECTION 405.  TAX RETURNS AND REPORTS...................................................................21
     SECTION 406.  PAYMENT OF TAXES, DUTIES, ETC. OF THE TRUST...............................................21
     SECTION 407.  PAYMENTS UNDER INDENTURE..................................................................21

ARTICLE V. - TRUST SECURITIES CERTIFICATES...................................................................21
     SECTION 501.  INITIAL OWNERSHIP.........................................................................21
     SECTION 502.  THE TRUST SECURITIES CERTIFICATES.........................................................21
     SECTION 503.  EXECUTION AND DELIVERY OF TRUST SECURITIES CERTIFICATES...................................22
     SECTION 504.  REGISTRATION OF TRANSFER AND EXCHANGE OF CAPITAL SECURITIES CERTIFICATES..................22
     SECTION 505.  MUTILATED, DESTROYED, LOST OR STOLEN TRUST SECURITIES CERTIFICATES........................23
     SECTION 506.  PERSONS DEEMED SECURITYHOLDERS............................................................24
</Table>

                                        i
<Page>

<Table>
<S>                <C>                                                                                       <C>
     SECTION 507.  ACCESS TO LIST OF SECURITYHOLDERS' NAMES AND ADDRESSES....................................24
     SECTION 508.  MAINTENANCE OF OFFICE OR AGENCY...........................................................24
     SECTION 509.  APPOINTMENT OF PAYING AGENT...............................................................24
     SECTION 510.  OWNERSHIP OF COMMON SECURITIES BY DEPOSITOR...............................................25
     SECTION 511.  BOOK-ENTRY CAPITAL SECURITIES CERTIFICATES; COMMON SECURITIES CERTIFICATE.................25
     SECTION 512.  NOTICES TO CLEARING AGENCY................................................................26
     SECTION 513.  DEFINITIVE CAPITAL SECURITIES CERTIFICATES................................................27
     SECTION 514.  RIGHTS OF SECURITYHOLDERS.................................................................27

ARTICLE VI. - ACTS OF SECURITYHOLDRES; MEETINGS; VOTING......................................................28
     SECTION 601.  LIMITATIONS ON VOTING RIGHTS..............................................................28
     SECTION 602.  NOTICE OF MEETINGS........................................................................29
     SECTION 603.  MEETINGS OF HOLDERS OF CAPITAL SECURITIES.................................................29
     SECTION 604.  VOTING RIGHTS.............................................................................30
     SECTION 605.  PROXIES, ETC..............................................................................30
     SECTION 606.  SECURITYHOLDER ACTION BY WRITTEN CONSENT..................................................30
     SECTION 607.  RECORD DATE FOR VOTING AND OTHER PURPOSES.................................................30
     SECTION 608.  ACTS OF SECURITYHOLDERS...................................................................31
     SECTION 609.  INSPECTION OF RECORDS.....................................................................32

ARTICLE VII. - REPRESENTATIONS AND WARRANTIES................................................................32
     SECTION 701.  REPRESENTATIONS AND WARRANTIES OF THE BANK AND THE PROPERTY TRUSTEE.......................32
     SECTION 702.  REPRESENTATIONS AND WARRANTIES OF THE DELAWARE BANK AND THE DELAWARE TRUSTEE..............33
     SECTION 703.  REPRESENTATIONS AND WARRANTIES OF DEPOSITOR...............................................34

ARTICLE VIII. - THE TRUSTEES.................................................................................35
     SECTION 801.  CERTAIN DUTIES AND RESPONSIBILITIES.......................................................35
     SECTION 802.  CERTAIN NOTICES...........................................................................36
     SECTION 803.  CERTAIN RIGHTS OF PROPERTY TRUSTEE........................................................37
     SECTION 804.  NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES....................................39
     SECTION 805.  MAY HOLD SECURITIES.......................................................................39
     SECTION 806.  COMPENSATION; INDEMNITY; FEES.............................................................39
     SECTION 807.  CORPORATE PROPERTY TRUSTEE REQUIRED; ELIGIBILITY OF TRUSTEES..............................40
     SECTION 808.  CONFLICTING INTERESTS.....................................................................40
     SECTION 809.  CO-TRUSTEES AND SEPARATE TRUSTEE..........................................................40
     SECTION 810.  RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.........................................42
     SECTION 811.  ACCEPTANCE OF APPOINTMENT BY SUCCESSOR....................................................44
     SECTION 812.  MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION
</Table>

                                       ii
<Page>

<Table>
<S>                <C>                                                                                       <C>
          TO BUSINESS........................................................................................44
     SECTION 813.  PREFERENTIAL COLLECTION OF CLAIMS AGAINST DEPOSITOR OR TRUST..............................44
     SECTION 814.  REPORTS BY PROPERTY TRUSTEE...............................................................45
     SECTION 815.  REPORTS TO THE PROPERTY TRUSTEE...........................................................45
     SECTION 816.  EVIDENCE OF COMPLIANCE WITH CONDITIONS PRECEDENT..........................................45
     SECTION 817.  NUMBER OF TRUSTEES........................................................................46
     SECTION 818.  DELEGATION OF POWER.......................................................................46
     SECTION 819.  VOTING....................................................................................46

ARTICLE IX. - TERMINATION, LIQUIDATION AND MERGER............................................................47
     SECTION 901.  DISSOLUTION, TERMINATION UPON EXPIRATION DATE.............................................47
     SECTION 902.  EARLY TERMINATION.........................................................................47
     SECTION 903.  TERMINATION...............................................................................47
     SECTION 904.  LIQUIDATION...............................................................................47
     SECTION 905.  MERGERS, CONSOLIDATIONS, AMALGAMATIONS OR REPLACEMENTS OF THE TRUST.......................49

ARTICLE X. - MISCELLANEOUS PROVISIONS........................................................................50
     SECTION 1001.  LIMITATION OF RIGHTS OF SECURITYHOLDERS..................................................50
     SECTION 1002.  AMENDMENT................................................................................50
     SECTION 1003.  SEPARABILITY.............................................................................51
     SECTION 1004.  GOVERNING LAW............................................................................51
     SECTION 1005.  PAYMENTS DUE ON NON-BUSINESS DAY.........................................................52
     SECTION 1006.  SUCCESSORS...............................................................................52
     SECTION 1007.  HEADINGS.................................................................................52
     SECTION 1008.  REPORTS, NOTICES AND DEMANDS.............................................................52
     SECTION 1009.  AGREEMENT NOT TO PETITION................................................................53
     SECTION 1010.  TRUST INDENTURE ACT; CONFLICT WITH TRUST INDENTURE ACT...................................53
     SECTION 1011.  ACCEPTANCE OF TERMS OF TRUST AGREEMENT, GUARANTEE AND INDENTURE..........................55

Exhibit A    Certificate of Trust
Exhibit B    Form of Certificate Depository Agreement
Exhibit C    Form of Common Securities Certificate
Exhibit D    Form of Expense Agreement
Exhibit E    Form of Capital Securities Certificate
</Table>

                                       iii
<Page>

                              CROSS-REFERENCE TABLE

<Table>
<Caption>
                    SECTION OF                          SECTION OF AMENDED
                TRUST INDENTURE ACT                     AND RESTATED TRUST
                OF 1939, AS AMENDED                          AGREEMENT
--------------------------------------------------------------------------------
                    <S>                                   <C>
                      310(a)(1)                                 807
                      310(a)(2)                                 807
                      310(a)(3)                                 807
                      310(a)(4)                             207(a)(ii)
                       310(b)                                   808
                       311(a)                                   813
                       311(b)                                   813
                       312(a)                                   507
                       312(b)                                   507
                       312(c)                                   507
                       313(a)                                 814(a)
                      313(a)(4)                               814(b)
                       313(b)                                 814(b)
                       313(c)                                   108
                       313(d)                                 814(c)
                       314(a)                                   815
                       314(b)                             Not Applicable
                      314(c)(1)                                 816
                      314(c)(2)                                 816
                      314(c)(3)                           Not Applicable
                       314(d)                             Not Applicable
                       314(e)                                101, 816
                       315(a)                             801(a), 803(a)
                       315(b)                                802, 108
                       315(c)                                 801(a)
                       315(d)                                801, 803
                       315(e)                             Not Applicable
                       316(a)                             Not Applicable
                    316(a)(1)(A)                          Not Applicable
                    316(a)(1)(B)                          Not Applicable
                      316(a)(2)                           Not Applicable
                       316(b)                             Not Applicable
                       316(c)                                   607
                     317(a)(1)                            Not Applicable
                     317(a)(2)                            Not Applicable
                       317(b)                                   509
                       318(a)                                  1010
</Table>

                                       iv
<Page>

      AMENDED AND RESTATED TRUST AGREEMENT, dated as of __________________,
2002, among (i) Community First Bankshares, Inc., a Delaware corporation
(including any successors or assigns, the "Depositor"), (ii) Wilmington Trust
Company, a Delaware banking corporation duly organized and existing under the
laws of the State of Delaware, as property trustee (the "Property Trustee" and,
in its separate corporate capacity and not in its capacity as Property Trustee,
the "Bank"), (iii) Wilmington Trust Company, a Delaware banking corporation duly
organized and existing under the laws of the State of Delaware, as Delaware
trustee (the "Delaware Trustee," and, in its separate corporate capacity and not
in its capacity as Delaware Trustee, the "Delaware Bank"), (iv) Mark A.
Anderson, an individual, Craig A. Weiss, an individual, and Thomas R. Anderson,
an individual, each of whose address is c/o Community First Bankshares, Inc.
(each an "Administrative Trustee" and collectively the "Administrative
Trustees") (the Property Trustee, the Delaware Trustee and the Administrative
Trustees referred to collectively as the "Trustees") and (v) the several
Holders, as hereinafter defined.

                                   WITNESSETH:

      WHEREAS, the Depositor, the Delaware Trustee, and Mark A. Anderson, Craig
A. Weiss and Thomas R. Anderson, each as an Administrative Trustee, have
heretofore duly declared and established a business trust pursuant to the
Delaware Business Trust Act by the entering into of that certain Trust
Agreement, dated as of ______________, 2002 (the "Original Trust Agreement"),
and by the execution and filing by the Delaware Trustee, the Depositor and the
Administrative Trustees with the Secretary of State of the State of Delaware of
the Certificate of Trust, filed on ______________, 2002, the form of which is
attached as EXHIBIT A; and

      WHEREAS, the Depositor, the Delaware Trustee, the Property Trustee and the
Administrative Trustees desire to amend and restate the Original Trust Agreement
in its entirety as set forth herein to provide for, among other things, (i) the
issuance of the Common Securities by the Trust to the Depositor, (ii) the
issuance and sale of the Capital Securities by the Trust pursuant to the
Underwriting Agreement, (iii) the acquisition by the Trust from the Depositor of
all of the right, title and interest in the Junior Subordinated Debentures and
(iv) the appointment of the Property Trustee;

      NOW THEREFORE, in consideration of the agreements and obligations set
forth herein and for other good and valuable consideration, the sufficiency of
which is hereby acknowledged, each party, for the benefit of the other parties
and for the benefit of the Securityholders, hereby amends and restates the
Original Trust Agreement in its entirety and agrees as follows:

                                       1
<Page>

                                   ARTICLE I.

                                  DEFINED TERMS

      SECTION 1. DEFINITIONS.

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

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

      (b)    all other terms used herein that are defined in the Trust Indenture
Act, either directly or by reference therein, have the meanings assigned to them
therein;

      (c)    unless the context otherwise requires, any reference to an
"Article" or a "Section" refers to an Article or a Section, as the case may be,
of this Trust Agreement; and

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

      "Act" has the meaning specified in Section 608.

      "Additional Amount" means, with respect to Trust Securities of a given
Liquidation Amount and/or a given period, the amount of additional interest
accrued on interest in arrears and paid by the Depositor on a Like Amount of
Junior Subordinated Debentures for such period.

      "Additional Sums" has the meaning specified in Section 2.5 of the
Indenture.

      "Administrative Trustee" means each of Mark A. Anderson, Craig A. Weiss,
and Thomas R. Anderson, solely in such person's capacity as Administrative
Trustee of the Trust and not in such person's individual capacity, or such
Administrative Trustee's successor in interest in such capacity, or any
successor Administrative Trustee appointed as herein provided.

      "Affiliate" of any specified Person means any other Person directly or
indirectly controlling or controlled by or under direct or indirect common
control with such specified Person. For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

      "Bank" has the meaning specified in the preamble to this Trust Agreement.

      "Bankruptcy Event" means, with respect to any Person:

                                       2
<Page>

      (a)    the entry of a decree or order by a court having jurisdiction in
the premises adjudging such Person a bankrupt or insolvent, or approving as
properly filed a petition seeking liquidation or reorganization of or in respect
of such Person under the Federal Bankruptcy Code or any other similar applicable
Federal or State law, and the continuance of any such decree or order unvacated
and unstayed for a period of 90 days; or the commencement of an involuntary case
under the Federal Bankruptcy Code in respect of such Person, which shall
continue undismissed for a period of 90 days or entry of an order for relief in
such case; or the entry of a decree or order of a court having jurisdiction in
the premises for the appointment on the ground of insolvency or bankruptcy of a
receiver, custodian, liquidator, trustee or assignee in bankruptcy or insolvency
of such Person or of its property, or for the winding up or liquidation of its
affairs, and such decree or order shall have remained in force unvacated and
unstayed for a period of 90 days; or

      (b)    the institution by such Person of proceedings to be adjudicated a
voluntary bankrupt, or the consent by such Person to the filing of a bankruptcy
proceeding against it, or the filing by such Person of a petition or answer or
consent seeking liquidation or reorganization under the Federal Bankruptcy Code
or other similar applicable Federal or State law, or the consent by such Person
to the filing of any such petition or to the appointment on the ground of
insolvency or bankruptcy of a receiver or custodian or liquidator or trustee or
assignee in bankruptcy or insolvency of such Person or of its property, or such
Person shall make a general assignment for the benefit of creditors.

      "Bankruptcy Laws" has the meaning specified in Section 1009.

      "Board Resolution" means a copy of a resolution certified by the Secretary
or an Assistant Secretary of the Depositor to have been duly adopted by the
Depositor's Board of Directors, or such committee of the Board of Directors or
officers of the Depositor to which authority to act on behalf of the Board of
Directors has been delegated, and to be in full force and effect on the date of
such certification, and delivered to the appropriate Trustee.

      "Book-Entry Capital Securities Certificates" means certificates
representing Capital Securities issued in global, fully registered form to the
Clearing Agency as described in Section 511.

      "Business Day" means a day other than (a) a Saturday or Sunday, (b) a day
on which banking institutions in the State of Minnesota are authorized or
required by law or executive order to remain closed, or (c) a day on which the
Property Trustee's Corporate Trust Office or the Corporate Trust Office of the
Debenture Trustee is closed for business.

      "Capital Securities Certificate" means a certificate evidencing ownership
of Capital Securities, substantially in the form attached as EXHIBIT E.

      "Certificate Depository Agreement" means the agreement among the Trust,
the Depositor and The Depositary Trust Company, as the initial Clearing Agency,
dated as of the Closing Date, relating to the Trust Securities Certificates,
substantially in the form attached as EXHIBIT B, as the same may be amended and
supplemented from time to time.

                                       3
<Page>

      "Certificate of Trust" means the certificate of trust filed with the
Secretary of State of the State of Delaware with respect to the Trust, as
amended or restated from time to time.

      "Clearing Agency" means an organization registered as a "clearing agency"
pursuant to Section 17A of the Securities Exchange Act of 1934, as amended. The
Depository Trust Company will be the initial Clearing Agency.

      "Clearing Agency Participant" means a broker, dealer, bank, other
financial institution or other Person for whom from time to time a Clearing
Agency effects book-entry transfers and pledges of securities deposited with the
Clearing Agency.

      "Closing Date" means the date of execution and delivery of this Trust
Agreement.

      "Code" means the Internal Revenue Code of 1986, as amended.

      "Commission" means the Securities and Exchange Commission, as from time to
time constituted, created under the Securities Exchange Act of 1934, as amended,
or, if at any time after the execution of this Trust Agreement such Commission
is not existing and performing the duties now assigned to it under the Trust
Indenture Act, then the body performing such duties at such time.

      "Common Security" means a common undivided beneficial interest in the
assets of the Trust, having a Liquidation Amount of $25 and having the rights
provided therefor in this Trust Agreement, including the right to receive
Distributions and a Liquidation Distribution as provided herein.

      "Common Securities Certificate" means a certificate evidencing ownership
of Common Securities, substantially in the form attached as EXHIBIT C.

      "Corporate Trust Office" means the principal corporate trust office of the
Property Trustee located at Rodney Square North, 1100 North Market Street,
Wilmington, Delaware, 19890-0001, Attn: Corporate Trust Administration.

      "Debenture Event of Default" means an "Event of Default" as defined in the
Indenture.

      "Debenture Redemption Date" means, with respect to any Junior Subordinated
Debentures to be redeemed under the Indenture, the date fixed for redemption
under the Indenture.

      "Debenture Trustee" means Wilmington Trust Company, a Delaware banking
corporation organized under the laws of the State of Delaware and any successor
thereto, as trustee under the Indenture.

      "Definitive Capital Securities Certificates" means either or both (as the
context requires) of (a) Capital Securities Certificates issued as Book-Entry
Capital Securities Certificates as

                                       4
<Page>

provided in Section 511(a), and (b) Capital Securities Certificates issued in
certificated, fully registered form as provided in Section 513.

      "Delaware Bank" has the meaning specified in the preamble to this Trust
Agreement.

      "Delaware Business Trust Act" means Chapter 38 of Title 12 of the Delaware
Code, 12 Delaware Code Sections 3801 et seq as it may be amended from time to
time.

      "Delaware Trustee" means the commercial bank or trust company identified
as the "Delaware Trustee" in the preamble to this Trust Agreement solely in its
capacity as Delaware Trustee of the Trust and not in its individual capacity, or
its successor in interest in such capacity, or any successor Delaware Trustee
appointed as herein provided.

      "Depositor" has the meaning specified in the preamble to this Trust
Agreement.

      "Distribution Date" has the meaning specified in Section 401(a).

      "Distributions" means amounts payable in respect of the Trust Securities
as provided in Section 401.

      "Event of Default" means any one of the following events shall have
occurred and be continuing (whatever the reason for such Event of Default and
whether it shall be voluntary or involuntary or be effected by operation of law
or pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body):

      (a)    the occurrence of a Debenture Event of Default; or

      (b)    default by the Trust in the payment of any Distribution when it
becomes due and payable, and continuation of such default for a period of 30
days; or

      (c)    default by the Trust in the payment of any Redemption Price of any
Trust Security when it becomes due and payable; or

      (d)    default in the performance, or breach, in any material respect, of
any covenant or warranty of the Property Trustee in this Trust Agreement (other
than a covenant or warranty, a default in the performance of which or the breach
of which is dealt with in clause (b) or (c), above) and continuation of such
default or breach for a period of 60 days after there has been given, by
registered or certified mail, to the defaulting Property Trustee by the Holders
of at least 25% in aggregate Liquidation Amount of the Outstanding Capital
Securities a written notice specifying such default or breach and requiring it
to be remedied and stating that such notice is a "Notice of Default" hereunder;
or

      (e)    the occurrence of a Bankruptcy Event with respect to the Property
Trustee and the failure by the Depositor to appoint a successor Property Trustee
within 60 days thereof.

      "Exchange Act" means the Securities Exchange Act of 1934, as amended.

                                       5
<Page>

      "Expense Agreement" means the Agreement as to Expenses and Liabilities
between the Depositor and the Trust, substantially in the form attached as
EXHIBIT D, as amended from time to time.

      "Expiration Date" has the meaning specified in Section 901.

      "Extension Period" means the "Extended Interest Payment Period" as defined
in the Indenture.

      "Global Subordinated Debenture" has the meaning specified in the
Indenture.

      "Guarantee" means the Capital Securities Guarantee Agreement executed and
delivered by the Depositor and Wilmington Trust Company as trustee,
contemporaneously with the execution and delivery of this Trust Agreement, for
the benefit of the holders of the Capital Securities, as amended from time to
time.

      "Holder" means a Securityholder.

      "Indenture" means the Subordinated Indenture, dated as of ____________ __,
2002, between the Depositor and the Debenture Trustee, as trustee, as amended or
supplemented from time to time.

      "Investment Company Act" means the Investment Company Act of 1940, as
amended.

      "Investment Company Event" means the receipt by the Depositor and the
Trust of an Opinion of Counsel experienced in such matters to the effect that,
as a result of the occurrence of a change in law or regulation or a change in
interpretation or application of law or regulation by any legislative body,
court, governmental agency or regulatory authority (a "Change in Investment
Company Act Law"), the Trust is or will be considered an "investment company"
that is required to be registered under the Investment Company Act, which Change
in Investment Company Act Law becomes effective on or after the date of original
issuance of the Capital Securities under this Trust Agreement.

      "Junior Subordinated Debentures" means the $___________ aggregate
principal amount of the Depositor's ____% Junior Subordinated Debentures, issued
pursuant to the Indenture.

      "Lien" means any lien, pledge, charge, encumbrance, mortgage, deed of
trust, adverse ownership interest, hypothecation, assignment, security interest
or preference, priority or other security agreement or preferential arrangement
of any kind or nature whatsoever.

      "Like Amount" means (a) with respect to a redemption of Trust Securities,
Trust Securities having a Liquidation Amount equal to the principal amount of
Junior Subordinated Debentures to be contemporaneously redeemed in accordance
with the Indenture and the proceeds of which will be used to pay the Redemption
Price of such Trust Securities and (b) with respect to a distribution of Junior
Subordinated Debentures to Holders of Trust Securities in

                                       6
<Page>

connection with a termination or liquidation of the Trust, Junior Subordinated
Debentures having a principal amount equal to the Liquidation Amount of the
Trust Securities of the Holder to whom such Junior Subordinated Debentures are
distributed.

      "Liquidation Amount" means the stated amount of $25 per Trust Security.

      "Liquidation Date" means the date on which Junior Subordinated Debentures
are to distributed to Holders of Trust Securities in connection with a
termination and liquidation of the Trust pursuant to Section 904(a).

      "Liquidation Distribution" has the meaning specified in Section 904(d).

      "Officers' Certificate" means a certificate signed by the President or a
Vice President and by the Chief Financial Officer or the Controller or an
Assistant Controller or the Secretary or an Assistant Secretary, of the
Depositor, and delivered to the appropriate Trustee. One of the officers signing
an Officers' Certificate given pursuant to Section 816 shall be the principal
executive, financial or accounting officer of the Depositor. Any Officers'
Certificate delivered with respect to compliance with a condition or covenant
provided for in this Trust Agreement shall include:

      (a)    a statement that each officer signing the Officers' Certificate has
read the covenant or condition and the definitions relating thereto;

      (b)    a brief statement of the nature and scope of the examination or
investigation undertaken by each officer in rendering the Officers' Certificate;

      (c)    a statement that each such officer has made such examination or
investigation as, in such officer's opinion, is necessary to enable such officer
to express an informed opinion as to whether or not such covenant or condition
has been complied with; and

      (d)    a statement as to whether, in the opinion of each such officer,
such condition or covenant has been complied with.

      "Opinion of Counsel" means a written opinion of counsel, who may be
counsel for the Trust, the Property Trustee, the Delaware Trustee or the
Depositor, but not an employee of any thereof, and who shall be reasonably
acceptable to the Property Trustee.

      "Original Trust Agreement" has the meaning specified in the recitals to
this Trust Agreement.

      "Outstanding", when used with respect to Capital Securities, means, as of
the date of determination, all Capital Securities theretofore executed and
delivered under this Trust Agreement, except:

      (a)    Capital Securities theretofore cancelled by the Property Trustee or
delivered to the Property Trustee for cancellation;

                                       7
<Page>

      (b)    Capital Securities for whose payment or redemption money in the
necessary amount has been theretofore deposited with the Property Trustee or any
Paying Agent for the Holders of such Capital Securities; provided that, if such
Capital Securities are to be redeemed, notice of such redemption has been duly
given pursuant to this Trust Agreement; and

      (c)    Capital Securities which have been paid or in exchange for or in
lieu of which other Capital Securities have been executed and delivered pursuant
to Sections 504, 505, 511 and 513; provided, however, that in determining
whether the Holders of the requisite Liquidation Amount of the Outstanding
Capital Securities have given any request, demand, authorization, direction,
notice, consent or waiver hereunder, Capital Securities owned by the Depositor,
any Trustee or any Affiliate of the Depositor or any Trustee shall be
disregarded and deemed not to be Outstanding, except that (i) in determining
whether any Trustee shall be protected in relying upon any such request, demand,
authorization, direction, notice, consent or waiver, only Capital Securities
that such Trustee knows to be so owned shall be so disregarded and (ii) the
foregoing shall not apply at any time when all of the Outstanding Capital
Securities are owned by the Depositor, one or more of the Trustees and/or any
such Affiliate. Capital Securities so owned which have been pledged in good
faith may be regarded as Outstanding if the pledgee establishes to the
satisfaction of the Administrative Trustees the pledgee's right as to such
Capital Securities so owned.

      "Owner" means each Person who is the beneficial owner of a Book-Entry
Capital Securities Certificate as reflected in the records of the Clearing
Agency or, if a Clearing Agency Participant is not the Owner, then as reflected
in the records of a Person maintaining an account with such Clearing Agency
(directly or indirectly, in accordance with the rules of such Clearing Agency).

      "Paying Agent" means any paying agent or co-paying agent appointed
pursuant to Section 509 and shall initially be the Bank.

      "Payment Account" means a segregated non-interest-bearing corporate trust
account maintained by the Property Trustee with the Bank in its trust department
for the benefit of the Securityholders in which all amounts paid in respect of
the Junior Subordinated Debentures will be held and from which the Property
Trustee shall make payments to the Securityholders in accordance with Sections
401 and 402.

      "Person" means any individual, corporation, partnership, joint venture,
trust, limited liability company or corporation, unincorporated organization or
government or any agency or political subdivision thereof.

      "Preferred Security" means an undivided beneficial interest in the assets
of the Trust, designated "___% Cumulative Capital Securities," having a
Liquidation Amount of $25 and having the rights provided therefor in this Trust
Agreement, including the right to receive Distributions and a Liquidation
Distribution as provided herein.

                                       8
<Page>

      "Property Trustee" means the commercial bank or trust company identified
as the "Property Trustee" in the preamble to this Trust Agreement solely in its
capacity as Property Trustee of the Trust heretofore formed and continued
hereunder and not in its individual capacity, or its successor in interest in
such capacity, or any successor Property Trustee appointed as herein provided.

      "Redemption Date" means, with respect to any Trust Security to be
redeemed, the date fixed for such redemption by or pursuant to this Trust
Agreement; provided that each Debenture Redemption Date and the stated maturity
of the Junior Subordinated Debentures shall be a Redemption Date for a Like
Amount of Trust Securities.

      "Redemption Price" means, with respect to any Trust Security to be
redeemed, the Liquidation Amount of such Trust Security, plus accumulated and
unpaid Distributions to the Redemption Date allocated on a pro rata basis (based
on Liquidation Amounts) among the Trust Securities to be redeemed.

      "Relevant Trustee" shall have the meaning specified in Section 810.

      "Securities Register" and "Securities Registrar" have the respective
meanings specified in Section 504.

      "Securityholder" means a Person in whose name a Trust Security or
Securities is registered in the Securities Register; any such Person is a
beneficial owner within the meaning of the Delaware Business Trust Act.

      "Tax Event" means the receipt by the Depositor or the Trust of an Opinion
of Counsel experienced in such matters to the effect that, as a result of any
amendment to, or change (including any announced prospective change) in, the
laws (or any regulations thereunder) of the United States or any political
subdivision or taxing authority thereof or therein, or as a result of any
official administrative pronouncement or judicial decision interpreting or
applying such laws or regulations, which amendment or change is effective or
which pronouncement or decision is announced on or after the date of issuance of
the Capital Securities under this Trust Agreement, or the Junior Subordinated
Debentures under the Indenture, as the case may be, there is more than an
insubstantial risk that (i) the Trust is, or will be within 90 days after the
date of such Opinion of Counsel, subject to United States federal income tax
with respect to income received or accrued on the Junior Subordinated
Debentures, (ii) interest payable by the Depositor on the Junior Subordinated
Debentures is not, or within 90 days after the date of such Opinion of Counsel
will not be, deductible by the Depositor, in whole or in part, for United States
federal income tax purposes or (iii) the Trust is, or will be within 90 days
after the date of such Opinion of Counsel, subject to more than a de minimis
amount of other taxes, duties, assessments or other governmental charges.

      "Trust" means the Delaware business trust created and continued hereby and
identified on the cover page to this Trust Agreement.

                                       9
<Page>

      "Trust Agreement" means this Amended and Restated Trust Agreement, as the
same may be modified, amended or supplemented in accordance with the applicable
provisions hereof, including all exhibits hereto, including, for all purposes of
this Trust Agreement and any such modification, amendment or supplement, the
provisions of the Trust Indenture Act that are deemed to be a part of and govern
this Trust Agreement and any such modification, amendment or supplement,
respectively.

      "Trust Indenture Act" means the Trust Indenture Act of 1939 as in force at
the date as of which this Trust Agreement was executed; provided, however, that
in the event the Trust Indenture Act of 1939 is amended after such date, "Trust
Indenture Act" means, to the extent required by any such amendment, the Trust
Indenture Act of 1939 as so amended.

      "Trust Property" means (a) the Junior Subordinated Debentures, (b) any
cash on deposit in, or owing to, the Payment Account and (d) all proceeds and
rights in respect of the foregoing and any other property and assets for the
time being held or deemed to be held by the Property Trustee pursuant to the
trusts of this Trust Agreement.

      "Trust Security" means any one of the Common Securities or the Capital
Securities.

      "Trust Securities Certificate" means any one of the Common Securities
Certificates or the Capital Securities Certificates.

      "Trustees" means, collectively, the Property Trustee, the Delaware Trustee
and the Administrative Trustees.

      "Underwriting Agreement" means the Underwriting Agreement, dated as of
__________, __ 2002, among the Trust, the Depositor and the Underwriters named
therein.

                                   ARTICLE II.
                           ESTABLISHMENT OF THE TRUST

      SECTION 201. NAME.

      The Trust created and continued hereby shall be known as "CFB Capital
___," as such name may be modified from time to time by the Administrative
Trustees following written notice to the Holders of Trust Securities and the
other Trustees, in which name the Trustees may engage in the transactions
contemplated hereby, make and execute contracts and other instruments on behalf
of the Trust and sue and be sued.

      SECTION 202. OFFICE OF THE DELAWARE TRUSTEE; PRINCIPAL PLACE OF BUSINESS.

      The address of the Delaware Trustee in the State of Delaware is c/o
Wilmington Trust Company, 1100 North Market Street, Wilmington, Delaware 19890,
Attention: Corporate Trust Administration, or such other address in the State of
Delaware as the Delaware Trustee may

                                       10
<Page>

designate by written notice to the Securityholders and the Depositor. The
principal executive office of the Trust is c/o Community First Bankshares, Inc.,
520 Main Avenue, Fargo, North Dakota 58124-0001.

      SECTION 203. INITIAL CONTRIBUTION OF TRUST PROPERTY; ORGANIZATIONAL
EXPENSES.

      The Trustees acknowledge receipt in trust from the Depositor in connection
with the Original Trust Agreement of the sum of $10, which constituted the
initial Trust Property. The Depositor shall pay organizational expenses of the
Trust as they arise or shall, upon request of any Trustee, promptly reimburse
such Trustee for any such expenses paid by such Trustee. The Depositor shall
make no claim upon the Trust Property for the payment of such expenses.

      SECTION 204. ISSUANCE OF THE CAPITAL SECURITIES.

      The Depositor, on behalf of the Trust and pursuant to the Original Trust
Agreement, executed and delivered the Underwriting Agreement. Contemporaneously
with the execution and delivery of this Trust Agreement, an Administrative
Trustee, on behalf of the Trust, shall execute in accordance with Section 502
and deliver, in accordance with the Underwriting Agreement, Capital Securities
Certificates, registered in the name of the nominee of the initial Clearing
Agency, in an aggregate amount of Capital Securities having an aggregate
Liquidation Amount of $__________ against receipt of the aggregate purchase
price of such Capital Securities of $__________, which amount such
Administrative Trustee shall promptly deliver to the Property Trustee.

      SECTION 205. ISSUANCE OF THE COMMON SECURITIES; SUBSCRIPTION AND PURCHASE
OF JUNIOR SUBORDINATED DEBENTURES.

      Contemporaneously with the execution and delivery of this Trust Agreement,
an Administrative Trustee, on behalf of the Trust, shall execute in accordance
with Section 502 and deliver to the Depositor Common Securities Certificates,
registered in the name of the Depositor, in an aggregate amount of Common
Securities having an aggregate Liquidation Amount of $_________ against delivery
by the Depositor of $__________ in principal amount of Junior Subordinated
Debentures. Contemporaneously therewith, an Administrative Trustee, on behalf of
the Trust, shall subscribe to and purchase from the Depositor Junior
Subordinated Debentures, registered in the name of the Property Trustee on
behalf of the Trust and having an aggregate principal amount equal to
$__________, and, in satisfaction of the purchase price for such Junior
Subordinated Debentures, the Property Trustee, on behalf of the Trust, shall
deliver to the Depositor the sum of $__________.

      SECTION 206. DECLARATION OF TRUST.

      The exclusive purposes and functions of the Trust are (a) to issue and
sell Trust Securities and use the proceeds from such sale to acquire the Junior
Subordinated Debentures, and (b) to engage in those activities necessary,
convenient or incidental thereto. The Depositor hereby appoints the Trustees as
trustees of the Trust, to have all the rights, powers and duties to the

                                       11
<Page>

extent set forth herein, and the Trustees hereby accept such appointment. The
Property Trustee hereby declares that it will hold the Trust Property in trust
upon and subject to the conditions set forth herein for the benefit of the
Securityholders. The Administrative Trustees shall have all rights, powers and
duties set forth herein and in accordance with applicable law with respect to
accomplishing the purposes of the Trust. The Delaware Trustee shall not be
entitled to exercise any powers, nor shall the Delaware Trustee have any of the
duties and responsibilities, of the Property Trustee or the Administrative
Trustees set forth herein. The Delaware Trustee shall be one of the Trustees of
the Trust for the sole and limited purpose of fulfilling the requirements of
Section 3807 of the Delaware Business Trust Act.

      SECTION 207. AUTHORIZATION TO ENTER INTO CERTAIN TRANSACTIONS.

      (a)    The Trustees shall conduct the affairs of the Trust in accordance
with the terms of this Trust Agreement. Subject to the limitations set forth in
paragraph (b) of this Section and Article VIII, and in accordance with the
following provisions (i) and (ii), the Administrative Trustees shall have the
authority to enter into all transactions and agreements determined by the
Administrative Trustees to be appropriate in exercising the authority, express
or implied, otherwise granted to the Administrative Trustees under this Trust
Agreement, and to perform all acts in furtherance thereof, including without
limitation, the following:

             (i)    As among the Trustees, each Administrative Trustee, acting
      singly or jointly, shall have the power and authority to act on behalf of
      the Trust with respect to the following matters:

                    (A)   the issuance and sale of the Trust Securities;

                    (B)   to cause the Trust to enter into, and to execute,
             deliver and perform on behalf of the Trust, the Expense Agreement
             and the Certificate Depository Agreement and such other agreements
             or documents as may be necessary or desirable in connection with
             the purposes and function of the Trust;

                    (C)   assisting in the registration of the Capital
             Securities under the Securities Act of 1933, as amended, and under
             state securities or blue sky laws, and the qualification of this
             Trust Agreement as a trust indenture under the Trust Indenture Act;

                    (D)   assisting in the listing of the Capital Securities
             upon the Nasdaq National Market or such securities exchange or
             exchanges as shall be determined by the Depositor and, if required,
             the registration of the Capital Securities under the Securities
             Exchange Act of 1934, as amended, and the preparation and filing of
             all periodic and other reports and other documents pursuant to the
             foregoing;

                    (E)   the sending of notices (other than notices of default)
             and other information regarding the Trust Securities and the Junior
             Subordinated Debentures to the Securityholders in accordance with
             this Trust Agreement;

                                       12
<Page>

                    (F)   the appointment of a Paying Agent, authenticating
             agent and Securities Registrar in accordance with this Trust
             Agreement;

                    (G)   to the extent provided in this Trust Agreement, the
             winding up of the affairs of and liquidation of the Trust and the
             preparation, execution and filing of the certificate of
             cancellation with the Secretary of State of the State of Delaware;

                    (H)   to take all action that may be necessary or
             appropriate for the preservation and the continuation of the
             Trust's valid existence, rights, franchises and privileges as a
             statutory business trust under the laws of the State of Delaware
             and of each other jurisdiction in which such existence is necessary
             to protect the limited liability of the Holders of the Capital
             Securities or to enable the Trust to effect the purposes for which
             the Trust was created; and

                    (I)   the taking of any action incidental to the foregoing
             as the Administrative Trustees may from time to time determine is
             necessary or advisable to give effect to the terms of this Trust
             Agreement for the benefit of the Securityholders (without
             consideration of the effect of any such action on any particular
             Securityholder).

             (ii)   As among the Trustees, the Property Trustee shall have the
      power, duty and authority to act on behalf of the Trust with respect to
      the following matters:

                    (A)   the establishment of the Payment Account;

                    (B)   the receipt of the Junior Subordinated Debentures;

                    (C)   the collection of interest, principal and any other
             payments made in respect of the Junior Subordinated Debentures in
             the Payment Account;

                    (D)   the distribution of amounts owed to the
             Securityholders in respect of the Trust Securities in accordance
             with the terms of this Trust Agreement;

                    (E)   the exercise of all of the rights, powers and
             privileges of a holder of the Junior Subordinated Debentures;

                    (F)   the sending of notices of default and other
             information regarding the Trust Securities and the Junior
             Subordinated Debentures to the Securityholders in accordance with
             this Trust Agreement;

                    (G)   the distribution of the Trust Property in accordance
             with the terms of this Trust Agreement;

                    (H)   to the extent provided in this Trust Agreement, the
             winding up of the affairs of and liquidation of the Trust;

                                       13
<Page>

                    (I)   after an Event of Default the taking of any action
             incidental to the foregoing as the Property Trustee may from time
             to time determine is necessary or advisable to give effect to the
             terms of this Trust Agreement and protect and conserve the Trust
             Property for the benefit of the Securityholders (without
             consideration of the effect of any such action on any particular
             Securityholder);

                    (J)   so long as the Property Trustee is the Securities
             Registrar, registering transfers of the Trust Securities in
             accordance with this Trust Agreement; and

                    (K)   except as otherwise provided in this Section
             207(a)(ii), the Property Trustee shall have none of the duties,
             liabilities, powers or the authority of the Administrative Trustees
             set forth in Section 207(a)(i).

      (b)    So long as this Trust Agreement remains in effect, the Trust (or
the Trustees acting on behalf of the Trust) shall not undertake any business,
activities or transaction except as expressly provided herein or contemplated
hereby. In particular, the Trustees shall not (i) acquire any investments or
engage in any activities not authorized by this Trust Agreement, (ii) sell,
assign, transfer, exchange, mortgage, pledge, set-off or otherwise dispose of
any of the Trust Property or interests therein, including to Securityholders,
except as expressly provided herein, (iii) take any action that would cause the
Trust to fail or cease to qualify as a "grantor trust" for United States federal
income tax purposes, (iv) incur any indebtedness for borrowed money or issue any
other debt or (v) take or consent to any action that would result in the
placement of a Lien on any of the Trust Property. The Administrative Trustees
shall defend all claims and demands of all Persons at any time claiming any Lien
on any of the Trust Property adverse to the interest of the Trust or the
Securityholders in their capacity as Securityholders.

      (c)    In connection with the issue and sale of the Capital Securities,
the Depositor shall have the right and responsibility to assist the Trust with
respect to, or effect on behalf of the Trust, the following (and any actions
taken by the Depositor in furtherance of the following prior to the date of this
Trust Agreement are hereby ratified and confirmed in all respects):

             (i)    the preparation and filing by the Trust with the Commission
      and the execution on behalf of the Trust of a registration statement on
      the appropriate form in relation to the Capital Securities and the Junior
      Subordinated Debentures, including any amendments thereto;

             (ii)   the determination of the states in which to take appropriate
      action to qualify or register for sale all or part of the Capital
      Securities and to do any and all such acts, other than actions which must
      be taken by or on behalf of the Trust, and advise the Trustees of actions
      they must take on behalf of the Trust, and prepare for execution and
      filing any documents to be executed and filed by the Trust or on behalf of
      the Trust, as the Depositor deems necessary or advisable in order to
      comply with the applicable laws of any such states;

                                       14
<Page>

             (iii)  the preparation for filing by the Trust and execution on
      behalf of the Trust of an application to the Nasdaq National Market or a
      national stock exchange or other organizations for listing upon notice of
      issuance of any Capital Securities and to file or cause an Administrative
      Trustee to file thereafter with such exchange or organization such
      notifications and documents as may be necessary from time to time;

             (iv)   if required, the preparation for filing by the Trust with
      the Commission and the execution on behalf of the Trust of a registration
      statement on Form 8-A relating to the registration of the Capital
      Securities under Section 12(b) or 12(g) of the Exchange Act, including any
      amendments thereto;

             (v)    the negotiation of the terms of, and the execution and
      delivery of, the Underwriting Agreement providing for the sale of the
      Capital Securities; and

             (vi)   the taking of any other actions necessary or desirable to
      carry out any of the foregoing activities.

      (d)    Notwithstanding anything herein to the contrary, the Administrative
Trustees are authorized and directed to conduct the affairs of the Trust and to
operate the Trust so that the Trust will not be deemed to be an "investment
company" required to be registered under the Investment Company Act, will be
classified as a "grantor trust" and not as an association taxable as a
corporation for United States federal income tax purposes and so that the Junior
Subordinated Debentures will be treated as indebtedness of the Depositor for
United States federal income tax purposes. In this connection, subject to
Section 1002, the Depositor and the Administrative Trustees are authorized to
take any action, not inconsistent with applicable law or this Trust Agreement,
that each of the Depositor and the Administrative Trustees determines in their
discretion to be necessary or desirable for such purposes.

      SECTION 208. ASSETS OF TRUST.

      The assets of the Trust shall consist of the Trust Property.

      SECTION 209. TITLE TO TRUST PROPERTY.

      Legal title to all Trust Property shall be vested at all times in the
Property Trustee (in its capacity as such) and shall be held and administered by
the Property Trustee for the benefit of the Securityholders in accordance with
this Trust Agreement.

                                  ARTICLE III.
                                 PAYMENT ACCOUNT

      SECTION 301. PAYMENT ACCOUNT.

      (a)    On or prior to the Closing Date, the Property Trustee shall
establish the Payment Account. The Property Trustee and any agent of the
Property Trustee shall have exclusive

                                       15
<Page>

control and sole right of withdrawal with respect to the Payment Account for the
purpose of making deposits and withdrawals from the Payment Account in
accordance with this Trust Agreement. All monies and other property deposited or
held from time to time in the Payment Account shall be held by the Property
Trustee in the Payment Account for the exclusive benefit of the Securityholders
and for distribution as herein provided, including (and subject to) any priority
of payments provided for herein.

      (b)    The Property Trustee shall deposit in the Payment Account, promptly
upon receipt, all payments of principal of or interest on, and any other
payments or proceeds with respect to, the Junior Subordinated Debentures.
Amounts held in the Payment Account shall not be invested by the Property
Trustee pending distribution thereof.

                                   ARTICLE IV.
                            DISTRIBUTIONS; REDEMPTION

      SECTION 401. DISTRIBUTIONS.

      (a)    Distributions on the Trust Securities shall be cumulative, and will
accumulate whether or not there are funds of the Trust available for the payment
of Distributions. Distributions shall accumulate from _______________ ___, 2002,
and, except during any Extension Period with respect to the Junior Subordinated
Debentures, shall be payable quarterly in arrears on the 15th day of April,
July, October, and January in each year, commencing ______________ ___, 2002.
The amount of each distribution due with respect to the Capital Securities will
include amounts accrued through the date the distribution payment is due. If any
date on which a Distribution is otherwise payable on the Trust Securities is not
a Business Day, then the payment of such Distribution shall be made on the next
succeeding day that is a Business Day (and without any interest or other payment
in respect of any such delay) except that, if such Business Day is in the next
succeeding calendar year, payment of such Distribution shall be made on the
immediately preceding Business Day, in each case with the same force and effect
as if made on such date (each date on which distributions are payable in
accordance with this Section 401(a) a "Distribution Date").

      (b)    The Trust Securities represent undivided beneficial interests in
the Trust Property, and, as a practical matter, the Distributions on the Trust
Securities shall be payable at a rate of ___% per annum of the Liquidation
Amount of the Trust Securities. The amount of Distributions payable for any full
period shall be computed on the basis of a 360-day year of twelve 30-day months.
The amount of Distributions for any partial period shall be computed on the
basis of the number of days elapsed in a 360-day year of twelve 30-day months.
During any Extension Period with respect to the Junior Subordinated Debentures,
Distributions on the Capital Securities will be deferred for a period equal to
the Extension Period. The amount of Distributions payable for any period shall
include the Additional Amounts, if any.

      (c)    Distributions on the Trust Securities shall be made by the Property
Trustee solely from the Payment Account and shall be payable on each
Distribution Date only to the extent that

                                       16
<Page>

the Trust has funds then on hand and immediately available in the Payment
Account for the payment of such Distributions.

      (d)    Distributions on the Trust Securities with respect to a
Distribution Date shall be payable to the Holders thereof as they appear on the
Securities Register for the Trust Securities on the relevant record date, which
shall be one Business Day prior to such Distribution Date; provided, however,
that in the event that the Capital Securities do not remain in book-entry-only
form, the relevant record date shall be the 1st day of the month in which the
relevant Distribution Date occurs.

      SECTION 402. REDEMPTION.

      (a)    On each Debenture Redemption Date and on the stated maturity of the
Junior Subordinated Debentures, the Trust will be required to redeem a Like
Amount of Trust Securities at the Redemption Price.

      (b)    Notice of redemption shall be given by the Property Trustee by
first-class mail, postage prepaid, mailed not less than 30 nor more than 60 days
prior to the Redemption Date to each Holder of Trust Securities to be redeemed,
at such Holder's address appearing in the Securities Register. The Property
Trustee shall have no responsibility for the accuracy of any CUSIP number
contained in such notice. All notices of redemption shall state:

             (i)    the Redemption Date;

             (ii)   the Redemption Price;

             (iii)  the CUSIP number;

             (iv)   if less than all the Outstanding Trust Securities are to be
      redeemed, the identification and the aggregate Liquidation Amount of the
      particular Trust Securities to be redeemed; and

             (v)    that on the Redemption Date the Redemption Price will become
      due and payable upon each such Trust Security to be redeemed and that
      distributions thereon will cease to accumulate on and after said date.

      (c)    The Trust Securities redeemed on each Redemption Date shall be
redeemed at the Redemption Price with the proceeds from the contemporaneous
redemption of Junior Subordinated Debentures. Redemptions of the Trust
Securities shall be made and the Redemption Price shall be payable on each
Redemption Date only to the extent that the Trust has immediately available
funds then on hand and available in the Payment Account for the payment of such
Redemption Price.

      (d)    If the Property Trustee gives a notice of redemption in respect of
any Capital Securities, then, by 12:00 noon, Minneapolis time, on the Redemption
Date, subject to Section 402(c), the Property Trustee will, so long as the
Capital Securities are in book-entry-only form,

                                       17
<Page>

deposit with the Clearing Agency for the Capital Securities funds sufficient to
pay the applicable Redemption Price and will give such Clearing Agency
irrevocable instructions and authority to pay the Redemption Price to the
holders thereof. If the Capital Securities are no longer in book-entry-only
form, the Property Trustee, subject to Section 402(c), will deposit with the
Paying Agent funds sufficient to pay the applicable Redemption Price and will
give the Paying Agent irrevocable instructions and authority to pay the
Redemption Price to the Holders thereof upon surrender of their Capital
Securities Certificates. Notwithstanding the foregoing, Distributions payable on
or prior to the Redemption Date for any Trust Securities called for redemption
shall be payable to the Holders of such Trust Securities as they appear on the
Securities Register for the Trust Securities on the relevant record dates for
the related Distribution Dates. If notice of redemption shall have been given
and funds deposited as required, then upon the date of such deposit, all rights
of Securityholders holding Trust Securities so called for redemption will cease,
except the right of such Securityholders to receive the Redemption Price, but
without interest on such Redemption Price, and such Securities will cease to be
Outstanding. In the event that any date on which any Redemption Price is payable
is not a Business Day, then payment of the Redemption Price payable on such date
will be made on the next succeeding day that is a Business Day (and without any
interest or other payment in respect of any such delay), except that, if such
Business Day falls in the next calendar year, such payment will be made on the
immediately preceding Business Day, in each case, with the same force and effect
as if made on such date. In the event that payment of the Redemption Price in
respect of any Trust Securities called for redemption is improperly withheld or
refused and not paid either by the Trust or by the Depositor pursuant to the
Guarantee, Distributions on such Trust Securities will continue to accumulate,
at the then applicable rate, from the Redemption Date originally established by
the Trust for such Trust Securities to the date such Redemption Price is
actually paid, in which case the actual payment date will be the date fixed for
redemption for purposes of calculating the Redemption Price.

      (e)    Payment of the Redemption Price on the Trust Securities shall be
made to the record holders thereof as they appear on the Securities Register for
the Trust Securities on the relevant record date, which shall be one Business
Day prior to the relevant Redemption Date; provided, however, that in the event
that the Capital Securities do not remain in book-entry-only form, the relevant
record date shall be the date fifteen days prior to the relevant Redemption
Date.

      (f)    Subject to Section 403(a), if less than all the Outstanding Trust
Securities are to be redeemed on a Redemption Date, then the aggregate
Liquidation Amount of Trust Securities to be redeemed shall be allocated on a
pro rata basis (based on Liquidation Amounts) among the Common Securities and
the Capital Securities. The particular Capital Securities to be redeemed shall
be selected not more than 60 days prior to the Redemption Date by the Property
Trustee from the outstanding Capital Securities not previously called for
redemption, by such method (including, without limitation, by lot) as the
Property Trustee shall deem fair and appropriate and which may provide for the
selection for redemption of portions (equal to $25 or an integral multiple of
$25 in excess thereof) of the Liquidation Amount of Capital Securities of a
denomination larger than $25. The Property Trustee shall promptly notify the
Securities Registrar in writing of the Capital Securities selected for
redemption and, in the case of any Capital Securities selected for partial
redemption, the Liquidation Amount thereof to be

                                       18
<Page>

redeemed. For all purposes of this Trust Agreement, unless the context otherwise
requires, all provisions relating to the redemption of Capital Securities shall
relate, in the case of any Capital Securities redeemed or to be redeemed only in
part, to the portion of the Liquidation Amount of Capital Securities which has
been or is to be redeemed.

      SECTION 403. SUBORDINATION OF COMMON SECURITIES.

      (a)    Payment of Distributions (including Additional Amounts, if
applicable) on, and the Redemption Price of, the Trust Securities, as
applicable, shall be made, subject to Section 402(f), pro rata among the Common
Securities and the Capital Securities based on the Liquidation Amount of the
Trust Securities; provided, however, that if on any Distribution Date or
Redemption Date any Event of Default resulting from a Debenture Event of Default
shall have occurred and be continuing, no payment of any Distribution (including
Additional Amounts, if applicable) on, or Redemption Price of, any Common
Security, and no other payment on account of the redemption, liquidation or
other acquisition of Common Securities, shall be made unless payment in full in
cash of all accumulated and unpaid Distributions (including Additional Amounts,
if applicable) on all Outstanding Capital Securities for all Distribution
periods terminating on or prior thereto, or in the case of payment of the
Redemption Price the full amount of such Redemption Price on all Outstanding
Capital Securities then called for redemption, shall have been made or provided
for, and all funds immediately available to the Property Trustee shall first be
applied to the payment in full in cash of all Distributions (including
Additional Amounts, if applicable) on, or the Redemption Price of, Capital
Securities then due and payable.

      (b)    In the case of the occurrence of any Event of Default resulting
from a Debenture Event of Default, the Holder of Common Securities will be
deemed to have waived any right to act with respect to any such Event of Default
under this Trust Agreement until the effect of all such Events of Default with
respect to the Capital Securities shall have been cured, waived or otherwise
eliminated. Until any such Event of Default under this Trust Agreement with
respect to the Capital Securities shall have been so cured, waived or otherwise
eliminated, the Property Trustee shall act solely on behalf of the Holders of
the Capital Securities and not the Holder of the Common Securities, and only the
Holders of the Capital Securities will have the right to direct the Property
Trustee to act on their behalf.

      SECTION 404. PAYMENT PROCEDURES.

      Payments of Distributions (including Additional Amounts, if applicable) in
respect of the Capital Securities shall be made by check mailed to the address
of the Person entitled thereto as such address shall appear on the Securities
Register or, if the Capital Securities are held by a Clearing Agency, such
Distributions shall be made to the Clearing Agency in immediately available
funds, which shall credit the relevant Persons' accounts at such Clearing Agency
on the applicable Distribution Dates. Payments in respect of the Common
Securities shall be made in such manner as shall be mutually agreed between the
Property Trustee and the Common Securityholder.

                                       19
<Page>

      SECTION 405. TAX RETURNS AND REPORTS.

      The Administrative Trustees shall prepare (or cause to be prepared), at
the Depositor's expense, and file all United States federal, state and local tax
and information returns and reports required to be filed by or in respect of the
Trust. In this regard, the Administrative Trustees shall (a) prepare and file
(or cause to be prepared and filed) the appropriate Internal Revenue Service
Form required to be filed in respect of the Trust in each taxable year of the
Trust and (b) prepare and furnish (or cause to be prepared and furnished) to
each Securityholder the appropriate Internal Revenue Service form required to be
furnished to such Securityholder or the information required to be provided on
such form. The Administrative Trustees shall provide the Depositor with a copy
of all such returns and reports promptly after such filing or furnishing. The
Property Trustee shall comply with United States federal withholding and backup
withholding tax laws and information reporting requirements with respect to any
payments to Securityholders under the Trust Securities.

      SECTION 406. PAYMENT OF TAXES, DUTIES, ETC. OF THE TRUST.

      Upon receipt under the Junior Subordinated Debentures of Additional Sums,
the Property Trustee, at the direction of an Administrative Trustee or the
Depositor, shall promptly pay any taxes, duties or governmental charges of
whatsoever nature (other than withholding taxes) imposed on the Trust by the
United States or any other taxing authority.

      SECTION 407. PAYMENTS UNDER INDENTURE.

      Any amount payable hereunder to any Holder of Capital Securities shall be
reduced by the amount of any corresponding payment such Holder (or any Owner
related thereto) has directly received under the Indenture pursuant to Section
514(b) or (c) hereof.

                                   ARTICLE V.
                          TRUST SECURITIES CERTIFICATES

      SECTION 501. INITIAL OWNERSHIP.

      Upon the creation of the Trust and the contribution by the Depositor
pursuant to Section 203 and until the issuance of the Trust Securities, and at
any time during which no Trust Securities are outstanding, the Depositor shall
be the sole beneficial owner of the Trust.

      SECTION 502. THE TRUST SECURITIES CERTIFICATES.

      The Capital Securities Certificates shall be issued in minimum
denominations of $25 Liquidation Amount and integral multiples of $25 in excess
thereof, and the Common Securities Certificates shall be issued in denominations
of $25 Liquidation Amount and integral multiples of $25 in excess thereof. The
Trust Securities Certificates shall be executed on behalf of the Trust by manual
signature of at least one Administrative Trustee. Trust Securities Certificates
bearing the manual signatures of individuals who were, at the time when such
signatures shall have been affixed, authorized to sign on behalf of the Trust,
shall be validly issued and entitled

                                       20
<Page>

to the benefits of this Trust Agreement, notwithstanding that such individuals
or any of them shall have ceased to be so authorized prior to the delivery of
such Trust Securities Certificates or did not hold such offices at the date of
delivery of such Trust Securities Certificates. A transferee of a Trust
Securities Certificate shall become a Securityholder, and shall be entitled to
the rights and subject to the obligations of a Securityholder hereunder, upon
due registration of such Trust Securities Certificate in such transferee's name
pursuant to Sections 504, 511 and 513.

      SECTION 503. EXECUTION AND DELIVERY OF TRUST SECURITIES CERTIFICATES.

      On the Closing Date, the Administrative Trustees shall cause Trust
Securities Certificates, in an aggregate Liquidation Amount as provided in
Sections 204 and 205, to be executed on behalf of the Trust by at least one of
the Administrative Trustees and delivered to or upon the written order of the
Depositor, signed by its President, any Vice President or the Chief Financial
Officer without further corporate action by the Depositor, in authorized
denominations.

      SECTION 504. REGISTRATION OF TRANSFER AND EXCHANGE OF CAPITAL SECURITIES
CERTIFICATES.

      The Depositor shall keep or cause to be kept, at the office or agency
maintained pursuant to Section 508, a register or registers for the purpose of
registering Trust Securities Certificates and transfers and exchanges of Capital
Securities Certificates (herein referred to as the "Securities Register") in
which the registrar designated by the Depositor (the "Securities Registrar"),
subject to such reasonable regulations as it may prescribe, shall provide for
the registration of Capital Securities Certificates and Common Securities
Certificates (subject to Section 510 in the case of the Common Securities
Certificates) and registration of transfers and exchanges of Capital Securities
Certificates as herein provided. The Property Trustee shall be the initial
Securities Registrar.

      Upon surrender for registration of transfer of any Capital Securities
Certificate at the office or agency maintained pursuant to Section 508, the
Administrative Trustees or any one of them shall execute and deliver, in the
name of the designated transferee or transferees, one or more new Capital
Securities Certificates in authorized denominations of a like aggregate
Liquidation Amount dated the date of execution by such Administrative Trustee or
Trustees. The Securities Registrar shall not be required to register the
transfer of any Capital Securities that have been called for redemption. At the
option of a Holder, Capital Securities Certificates may be exchanged for other
Capital Securities Certificates in authorized denominations of the same class
and of a like aggregate Liquidation Amount upon surrender of the Capital
Securities Certificates to be exchanged at the office or agency maintained
pursuant to Section 508.

      Every Capital Securities Certificate presented or surrendered for
registration of transfer or exchange shall be accompanied by a written
instrument of transfer in form satisfactory to the Property Trustee and the
Securities Registrar duly executed by the Holder or such Holder's attorney duly
authorized in writing. Each Capital Securities Certificate surrendered for
registration of transfer or exchange shall be cancelled and subsequently
disposed of by the

                                       21
<Page>

Property Trustee in accordance with its customary practice. The Trust shall not
be required to (i) issue, register the transfer of, or exchange any Capital
Securities during a period beginning at the opening of business 15 calendar days
before the date of mailing of a notice of redemption of any Capital Securities
called for redemption and ending at the close of business on the day of such
mailing or (ii) register the transfer of or exchange any Capital Securities so
selected for redemption, in whole or in part, except the unredeemed portion of
any such Capital Securities being redeemed in part.

      No service charge shall be made for any registration of transfer or
exchange of Capital Securities Certificates, but the Securities Registrar may
require payment of a sum sufficient to cover any tax or governmental charge that
may be imposed in connection with any transfer or exchange of Capital Securities
Certificates.

      SECTION 505. MUTILATED, DESTROYED, LOST OR STOLEN TRUST SECURITIES
CERTIFICATES.

      If (a) any mutilated Trust Securities Certificate shall be surrendered to
the Securities Registrar, or if the Securities Registrar shall receive evidence
to its satisfaction of the destruction, loss or theft of any Trust Securities
Certificate and (b) there shall be delivered to the Securities Registrar and the
Administrative Trustees such security or indemnity as may be required by them to
save each of them harmless, then in the absence of notice that such Trust
Securities Certificate shall have been acquired by a protected purchaser, the
Administrative Trustees, or any one of them, on behalf of the Trust shall
execute and make available for delivery, in exchange for or in lieu of any such
mutilated, destroyed, lost or stolen Trust Securities Certificate, a new Trust
Securities Certificate of like class, tenor and denomination. In connection with
the issuance of any new Trust Securities Certificate under this Section, the
Administrative Trustees or the Securities Registrar may require the payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection therewith. Any duplicate Trust Securities Certificate issued
pursuant to this Section shall constitute conclusive evidence of an undivided
beneficial interest in the assets of the Trust, as if originally issued, whether
or not the lost, stolen or destroyed Trust Securities Certificate shall be found
at any time.

      SECTION 506. PERSONS DEEMED SECURITYHOLDERS.

      The Trustees, the Paying Agent and the Securities Registrar shall treat
the Person in whose name any Trust Securities Certificate shall be registered in
the Securities Register as the owner of such Trust Securities Certificate for
the purpose of receiving Distributions and for all other purposes whatsoever,
and neither the Trustees nor the Securities Registrar shall be bound by any
notice to the contrary.

      SECTION 507. ACCESS TO LIST OF SECURITYHOLDERS' NAMES AND ADDRESSES.

      At any time when the Property Trustee is not also acting as the Securities
Registrar, the Administrative Trustees or the Depositor shall furnish or cause
to be furnished to the Property

                                       22
<Page>

Trustee (a) semi-annually on or before January 1 and July 1 in each year, a
list, in such form as the Property Trustee may reasonably require, of the names
and addresses of the Securityholders as of the most recent Record Date and (b)
promptly after receipt by any Administrative Trustee or the Depositor of a
request therefor from the Property Trustee, such other information as the
Property Trustee may reasonably require in order to enable the Property Trustee
to discharge its obligations under this Trust Agreement, in each case to the
extent such information is in the possession or control of the Administrative
Trustees or the Depositor and is not identical to a previously supplied list or
has not otherwise been received by the Property Trustee in its capacity as
Securities Registrar. The rights of Securityholders to communicate with other
Securityholders with respect to their rights under this Trust Agreement or under
the Trust Securities, and the corresponding rights of the Trustee shall be as
provided in the Trust Indenture Act. Each Holder, by receiving and holding a
Trust Securities Certificate, and each Owner shall be deemed to have agreed not
to hold the Depositor, the Property Trustee or the Administrative Trustees
accountable by reason of the disclosure of its name and address, regardless of
the source from which such information was derived.

      SECTION 508. MAINTENANCE OF OFFICE OR AGENCY.

      The Administrative Trustees shall maintain an office or offices or agency
or agencies where Capital Securities Certificates may be surrendered for
registration of transfer or exchange and where notices and demands to or upon
the Trustees in respect of the Trust Securities Certificates may be served. The
Administrative Trustees initially designate the principal corporate trust office
of the Property Trustee, Rodney Square North, 1100 North Market Street,
Wilmington, Delaware 19890-0001, Attn: Corporate Trust Administration, as the
principal corporate trust office for such purposes. The Administrative Trustees
shall give prompt written notice to the Depositor and to the Securityholders of
any change in the location of the Securities Register or any such office or
agency.

      SECTION 509. APPOINTMENT OF PAYING AGENT.

      The Paying Agent shall make distributions to Securityholders from the
Payment Account and shall report the amounts of such distributions to the
Property Trustee and the Administrative Trustees. Any Paying Agent shall have
the revocable power to withdraw funds from the Payment Account for the purpose
of making the Distributions referred to above. The Administrative Trustees may
revoke such power and remove the Paying Agent if such Trustees determine in
their sole discretion that the Paying Agent shall have failed to perform its
obligations under this Trust Agreement in any material respect. The Paying Agent
shall initially be the Property Trustee, and any co-paying agent chosen by the
Property Trustee, and acceptable to the Administrative Trustees and the
Depositor. Any Person acting as Paying Agent shall be permitted to resign as
Paying Agent upon 30 days' written notice to the Administrative Trustees, the
Property Trustee and the Depositor. In the event that the Property Trustee shall
no longer be the Paying Agent or a successor Paying Agent shall resign or its
authority to act be revoked, the Administrative Trustees shall appoint a
successor that is acceptable to the Property Trustee and the Depositor to act as
Paying Agent (which shall be a bank or trust company). The Administrative
Trustees shall cause such successor Paying Agent or any additional Paying Agent
appointed by the Administrative Trustees to execute and deliver to the Trustees
an instrument in

                                       23
<Page>

which such successor Paying Agent or additional Paying Agent shall agree with
the Trustees that as Paying Agent, such successor Paying Agent or additional
Paying Agent will hold all sums, if any, held by it for payment to the
Securityholders in trust for the benefit of the Securityholders entitled thereto
until such sums shall be paid to such Securityholders. The Paying Agent shall
return all unclaimed funds to the Property Trustee and upon removal of a Paying
Agent such Paying Agent shall also return all funds in its possession to the
Property Trustee. The provisions of Sections 801, 803 and 806 shall apply to the
Property Trustee also in its role as Paying Agent, for so long as the Property
Trustee shall act as Paying Agent and, to the extent applicable, to any other
paying agent appointed hereunder. Any reference in this Agreement to the Paying
Agent shall include any co-paying agent unless the context requires otherwise.

      SECTION 510. OWNERSHIP OF COMMON SECURITIES BY DEPOSITOR.

      On the Closing Date, the Depositor shall acquire and retain beneficial and
record ownership of the Common Securities. To the fullest extent permitted by
law, any attempted transfer of the Common Securities (other than a transfer in
connection with a merger or consolidation of the Depositor into another
corporation pursuant to Section 12.1 of the Indenture) shall be void. The
Administrative Trustees shall cause each Common Securities Certificate issued to
the Depositor to contain a legend stating "THIS CERTIFICATE IS NOT TRANSFERABLE
EXCEPT TO THE DEPOSITOR OR AN AFFILIATE OF THE DEPOSITOR IN COMPLIANCE WITH
APPLICABLE LAW AND SECTION 510 OF THE TRUST AGREEMENT AND ONLY IN CONNECTION
WITH A SIMULTANEOUS DELEGATION AND ASSIGNMENT OF THE EXPENSE AGREEMENT REFERRED
TO THEREIN".

      SECTION 511. BOOK-ENTRY CAPITAL SECURITIES CERTIFICATES; COMMON SECURITIES
CERTIFICATE.

      (a)    The Capital Securities Certificates, upon original issuance, will
be issued in the form of a typewritten Capital Securities Certificate or
Certificates representing Book-Entry Capital Securities Certificates, to be
delivered to or held on behalf of The Depository Trust Company, the initial
Clearing Agency, by, or on behalf of, the Trust. Such Book-Entry Capital
Securities Certificate or Certificates shall initially be registered on the
Securities Register in the name of Cede & Co., the nominee of the initial
Clearing Agency, and no beneficial owner will receive a Definitive Capital
Securities Certificate representing such beneficial owner's interest in such
Capital Securities, except as provided in Section 513. Unless and until
Definitive Capital Securities Certificates have been issued to beneficial owners
pursuant to Section 513:

             (i)    the provisions of this Section 511(a) shall be in full force
      and effect;

             (ii)   the Securities Registrar, the Paying Agent and the Trustees
      shall be entitled to deal with the Clearing Agency for all purposes of
      this Trust Agreement relating to the Book-Entry Capital Securities
      Certificates (including the payment of the Liquidation Amount of and
      Distributions on the Book-Entry Capital Securities) as the sole Holder of
      Book-Entry Capital Securities and shall have no obligations to the Owners
      thereof;

                                       24
<Page>

             (iii)  to the extent that the provisions of this Section 511
      conflict with any other provisions of this Trust Agreement, the provisions
      of this Section 511 shall control; and

             (iv)   the rights of the Owners of the Book-Entry Capital
      Securities Certificates shall be exercised only through the Clearing
      Agency and shall be limited to those established by law and agreements
      between such Owners and the Clearing Agency and/or the Clearing Agency
      Participants. Pursuant to the Certificate Depository Agreement, unless and
      until Definitive Capital Securities Certificates are issued pursuant to
      Section 513, the initial Clearing Agency will make book-entry transfers
      among the Clearing Agency Participants and will receive and transmit
      payments on the Capital Securities to such Clearing Agency Participants.
      Any Clearing Agency designated pursuant hereto will not be deemed an agent
      of the Trustees for any purpose.

      (b)    A single Common Securities Certificate representing the Common
Securities shall be issued to the Depositor in the form of a definitive Common
Securities Certificate.

      SECTION 512. NOTICES TO CLEARING AGENCY.

      To the extent that a notice or other communication to the Owners is
required under this Trust Agreement, unless and until Definitive Capital
Securities Certificates shall have been issued to Owners pursuant to Section
513, the Trustees shall give all such notices and communications specified
herein to be given to Owners to the Clearing Agency, and shall have no
obligations to the Owners.

      SECTION 513. DEFINITIVE CAPITAL SECURITIES CERTIFICATES.

      If (a) the Depositor advises the Trustees in writing that the Clearing
Agency is no longer willing or able to properly discharge its responsibilities
with respect to the Capital Securities Certificates, and the Depositor is unable
to locate a qualified successor, (b) the Depositor at its option advises the
Trustees in writing that it elects to terminate the book-entry system through
the Clearing Agency, or (c) after the occurrence of a Debenture Event of
Default, Owners of Capital Securities Certificates representing beneficial
interests aggregating at least a majority of the Liquidation Amount advise the
Property Trustee in writing that the continuation of a book-entry system through
the Clearing Agency is no longer in the best interests of the Owners of Capital
Securities Certificates, then the Property Trustee shall notify the Clearing
Agency, and the Clearing Agency shall notify all Owners of Capital Securities
Certificates, of the occurrence of any such event and of the availability of the
Definitive Capital Securities Certificates to Owners of such class or classes,
as applicable, requesting the same. Upon surrender to the Property Trustee of
the typewritten Capital Securities Certificate or Certificates representing the
Book-Entry Capital Securities Certificates by the Clearing Agency, accompanied
by registration instructions, the Administrative Trustees, or any one of them,
shall execute the Definitive Capital Securities Certificates in accordance with
the instructions of the Clearing Agency. Neither the Securities Registrar nor
the Trustees shall be liable for any delay in delivery of such instructions and
may conclusively rely on, and shall be protected in relying on, such
instructions. Upon the issuance of Definitive Capital Securities Certificates,
the Trustees shall recognize the holders of

                                       25
<Page>

the Definitive Capital Securities Certificates as Securityholders. The
Definitive Capital Securities Certificates shall be printed, lithographed or
engraved or may be produced in any other manner as is reasonably acceptable to
the Administrative Trustees, as evidenced by the execution thereof by the
Administrative Trustees or any one of them.

      SECTION 514. RIGHTS OF SECURITYHOLDERS.

      (a)    The legal title to the Trust Property is vested exclusively in the
Property Trustee (in its capacity as such) in accordance with Section 209, and
the Securityholders shall not have any right or title therein other than the
undivided beneficial interest in the assets of the Trust conferred by their
Trust Securities and they shall have no right to call for any partition or
division of property, profits or rights of the Trust except as described below.
The Trust Securities shall be personal property giving only the rights
specifically set forth therein and in this Trust Agreement. The Trust Securities
shall have no preemptive or similar rights. When issued and delivered to Holders
of the Capital Securities against payment of the purchase price therefor, the
Capital Securities will be fully paid and nonassessable, beneficial interests in
the Trust. The Holders of the Capital Securities, in their capacities as such,
shall be entitled to the same limitation of personal liability extended to
stockholders of private corporations for profit organized under the General
Corporation Law of the State of Delaware.

      (b)    For so long as any Capital Securities remain Outstanding, if, upon
a Debenture Event of Default, the Debenture Trustee fails or the holders of not
less than 25% in principal amount of the outstanding Junior Subordinated
Debentures fail to declare the principal of all of the Junior Subordinated
Debentures to be immediately due and payable, the Holders of at least 25% in
Liquidation Amount of the Capital Securities then Outstanding shall have such
right by a notice in writing to the Depositor and the Debenture Trustee; and
upon any such declaration such principal amount of and the accrued interest on
all of the Junior Subordinated Debentures shall become immediately due and
payable, provided that the payment of principal and interest on such Junior
Subordinated Debentures shall remain subordinated to the extent provided in the
Indenture. If, as a result of a Debenture Event of Default, the Debenture
Trustee or the holders of not less than 25% in aggregate outstanding principal
amount of the Junior Subordinated Debentures have declared the Junior
Subordinated Debentures due and payable and if such default has been cured and a
sum sufficient to pay all matured installments due (otherwise than by
acceleration) under the Junior Subordinated Debentures has been deposited with
the Debenture Trustee, then (if the holders of not less than a majority in
aggregate outstanding principal amount of Junior Subordinated Debentures have
not annulled such declaration and waived such default) the holders of a majority
in aggregate Liquidation Amount of the Capital Securities may annul such
declaration and waive such default.

      (c)    For so long as any Capital Securities remain outstanding, upon a
Debenture Event of Default arising from the failure to pay interest or principal
on the Junior Subordinated Debentures, the Holders of any Capital Securities
then Outstanding shall, to the fullest extent permitted by law, have the right
to directly institute proceedings for enforcement of payment to such Holders of
principal of or interest on the Junior Subordinated Debentures having a
principal amount equal to the Liquidation Amount of the Capital Securities of
such Holders.

                                       26
<Page>

                                   ARTICLE VI.
                    ACTS OF SECURITYHOLDERS; MEETINGS; VOTING

      SECTION 601. LIMITATIONS ON VOTING RIGHTS.

      (a)    Except as provided in this Section, in Sections 514, 810 and 1002
and in the Indenture and as otherwise required by law, no Holder of Capital
Securities shall have any right to vote or in any manner otherwise control the
administration, operation and management of the Trust or the obligations of the
parties hereto, nor shall anything herein set forth, or contained in the terms
of the Trust Securities Certificates, be construed so as to constitute the
Securityholders from time to time as partners or members of an association.

      (b)    So long as any Junior Subordinated Debentures are held by the
Property Trustee, the Trustees shall not (i) direct the time, method and place
of conducting any proceeding for any remedy available to the Debenture Trustee,
or executing any trust or power conferred on the Debenture Trustee with respect
to such Junior Subordinated Debentures, (ii) waive any past default which is
waivable under Article VII of the Indenture, (iii) exercise any right to rescind
or annul a declaration that the principal of all the Junior Subordinated
Debentures shall be due and payable or (iv) consent to any amendment,
modification or termination of the Indenture or the Junior Subordinated
Debentures, where such consent shall be required, without, in each case,
obtaining the prior approval of the Holders of at least a majority in
Liquidation Amount of all Outstanding Capital Securities; provided, however,
that where a consent under the Indenture would require the consent of each
holder of outstanding Junior Subordinated Debentures affected thereby, no such
consent shall be given by the Property Trustee without the prior written consent
of each Holder of Capital Securities. The Trustees shall not revoke any action
previously authorized or approved by a vote of the Holders of the Outstanding
Capital Securities, except by a subsequent vote of the Holders of the
Outstanding Capital Securities. The Property Trustee shall notify each Holder of
the Outstanding Capital Securities of any notice of default received from the
Debenture Trustee with respect to the Junior Subordinated Debentures. In
addition to obtaining the foregoing approvals of the Holders of the Capital
Securities, prior to taking any of the foregoing actions, the Trustees shall, at
the expense of the Depositor, obtain an Opinion of Counsel experienced in such
matters to the effect that the Trust will continue to be classified as a grantor
trust and not as an association taxable as a corporation for United States
federal income tax purposes on account of such action.

      (c)    If any proposed amendment to the Trust Agreement provides for, or
the Trustees otherwise propose to effect, (i) any action that would adversely
affect in any material respect the powers, preferences or special rights of the
Capital Securities, whether by way of amendment to the Trust Agreement or
otherwise, or (ii) the dissolution, winding-up or termination of the Trust,
other than pursuant to the terms of this Trust Agreement, then the Holders of
Outstanding Capital Securities as a class will be entitled to vote on such
amendment or proposal and such amendment or proposal shall not be effective
except with the approval of the Holders of at least a majority in Liquidation
Amount of the Outstanding Capital Securities. No amendment to this Trust
Agreement may be made if, as a result of such amendment, the Trust would cease
to be classified as a grantor trust or would be classified as an association
taxable as a corporation for United States federal income tax purposes.

                                       27
<Page>

      SECTION 602. NOTICE OF MEETINGS.

      Notice of all meetings of the Holders of Capital Securities, stating the
time, place and purpose of the meeting, shall be given by the Property Trustee
pursuant to Section 1008 to each Holder of Capital Securities of record, at and
Securityholder's registered address, at least 15 days and not more than 90 days
before the meeting. At any such meeting, any business properly before the
meeting may be so considered whether or not stated in the notice of the meeting.
Any adjourned meeting may be held as adjourned without further notice.

      SECTION 603. MEETINGS OF HOLDERS OF CAPITAL SECURITIES.

      No annual meeting of Securityholders is required to be held. The
Administrative Trustees, however, shall call a meeting of Securityholders to
vote on any matter upon the written request of the Holders of 25% of the
Outstanding Capital Securities (based upon their aggregate Liquidation Amount)
and the Administrative Trustees or the Property Trustee may, at any time in
their discretion, call a meeting of Preferred Securityholders to vote on any
matters as to which the Preferred Securityholders are entitled to vote.

      Holders of record of 50% of the Outstanding Capital Securities (based upon
their aggregate Liquidation Amount), present in person or by proxy, shall
constitute a quorum at any meeting of Securityholders.

      If a quorum is present at a meeting, an affirmative vote by the Holders of
record present, in person or by proxy, holding a majority of the Capital
Securities (based upon their aggregate Liquidation Amount) held by the Holders
of Capital Securities of record present, either in person or by proxy, at such
meeting shall constitute the action of the Securityholders, unless this Trust
Agreement requires a greater number of affirmative votes.

      SECTION 604. VOTING RIGHTS.

      Securityholders shall be entitled to one vote for each $25 of Liquidation
Amount represented by their Trust Securities in respect of any matter as to
which such Securityholders are entitled to vote.

      SECTION 605. PROXIES, ETC.

      At any meeting of Securityholders, any Securityholder entitled to vote
thereat may vote by proxy, provided that no proxy shall be voted at any meeting
unless it shall have been placed on file with the Administrative Trustees, or
with such other officer or agent of the Trust as the Administrative Trustees may
direct, for verification prior to the time at which such vote shall be taken.
When Trust Securities are held jointly by several Persons, any one of them may
vote at any meeting in person or by proxy in respect of such Trust Securities,
but if more than one of them shall be present at such meeting in person or by
proxy, and such joint owners or their proxies so present disagree as to any vote
to be cast, such vote shall not be received in respect of such Trust Securities.
A proxy purporting to be executed by or on behalf of a Securityholder

                                       28
<Page>

shall be deemed valid unless challenged at or prior to its exercise, and, the
burden of proving invalidity shall rest on the challenger. No proxy shall be
valid more than three years after its date of execution.

      SECTION 606. SECURITYHOLDER ACTION BY WRITTEN CONSENT.

      Any action which may be taken by Securityholders at a meeting may be taken
without a meeting and without prior notice if Securityholders holding a majority
of all Outstanding Trust Securities (based upon their aggregate Liquidation
Amount) entitled to vote in respect of such action (or such larger proportion
thereof as shall be required by any express provision of this Trust Agreement)
shall consent to the action in writing (based upon their aggregate Liquidation
Amount).

      SECTION 607. RECORD DATE FOR VOTING AND OTHER PURPOSES.

      For the purposes of determining the Securityholders who are entitled to
notice of and to vote at any meeting or by written consent, or to participate in
any Distribution on the Trust Securities in respect of which a record date is
not otherwise provided for in this Trust Agreement, or for the purpose of any
other action, the Administrative Trustees may from time to time fix a date, not
more than 90 days prior to the date of any meeting of Securityholders or the
payment of Distribution or other action, as the case may be, as a record date
for the determination of the identity of the Securityholders of record for such
purposes.

      SECTION 608. ACTS OF SECURITYHOLDERS.

      Any request, demand, authorization, direction, notice, consent, waiver or
other action provided or permitted by this Trust Agreement to be given, made or
taken by Securityholders or Owners may be embodied in and evidenced by one or
more instruments of substantially similar tenor signed by such Securityholders
or Owners in person or by an agent duly appointed in writing; and, except as
otherwise expressly provided herein, such action shall become effective when
such instrument or instruments are delivered to an Administrative Trustee. Such
instrument or instruments (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Securityholders or
Owners signing such instrument or instruments. Proof of execution of any such
instrument or of a writing appointing any such agent shall be sufficient for any
purpose of this Trust Agreement and (subject to Section 801) conclusive in favor
of the Trustees, if made in the manner provided in this Section.

      The fact and date of the execution by any Person of any such instrument or
writing may be proved by the affidavit of a witness of such execution or by a
certificate of a notary public or other officer authorized by law to take
acknowledgments of deeds, certifying that the individual signing such instrument
or writing acknowledged to him or her the execution thereof. Where such
execution is by a signer acting in a capacity other than such signer's
individual capacity, such certificate or affidavit shall also constitute
sufficient proof of such signer's authority. The fact and date of the execution
of any such instrument or writing, or the authority of the Person executing the
same, may also be proved in any other manner which any Trustee receiving the
same deems sufficient.

                                       29
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      The ownership of Capital Securities shall be proved by the Securities
Register.

      Any request, demand, authorization, direction, notice, consent, waiver or
other Act of the Securityholder of any Trust Security shall bind every future
Securityholder of the same Trust Security and the Securityholder of every Trust
Security issued upon the registration of transfer thereof or in exchange
therefor or in lieu thereof in respect of anything done, omitted or suffered to
be done by the Trustees or the Trust in reliance thereon, whether or not
notation of such action is made upon such Trust Security.

      Without limiting the foregoing, a Securityholder entitled hereunder to
take any action hereunder with regard to any particular Trust Security may do so
with regard to all or any part of the Liquidation Amount of such Trust Security
or by one or more duly appointed agents each of which may do so pursuant to such
appointment with regard to all or any part of such Liquidation Amount.

      SECTION 609. INSPECTION OF RECORDS.

      Upon reasonable notice to the Administrative Trustees and the Property
Trustee, the records of the Trust shall be open to inspection by Securityholders
during normal business hours for any purpose reasonably related to such
Securityholder's interest as a Securityholder.

                                  ARTICLE VII.
                         REPRESENTATIONS AND WARRANTIES

      SECTION 701. REPRESENTATIONS AND WARRANTIES OF THE BANK AND THE PROPERTY
TRUSTEE.

      The Bank and the Property Trustee, each severally on behalf of and as to
itself, as of the date hereof, and each Successor Property Trustee at the time
of the Successor Property Trustee's acceptance of its appointment as Property
Trustee hereunder (the term "Bank" being used to refer to such Successor
Property Trustee in its separate corporate capacity), hereby represents and
warrants (as applicable) for the benefit of the Depositor and the
Securityholders that:

      (a)    the Bank is a Delaware banking corporation duly organized, validly
existing and in good standing under the laws of the State of Delaware;

      (b)    each of the Property Trustee and the Bank has full corporate power,
authority and legal right to execute, deliver and perform its obligations under
this Trust Agreement and has taken all necessary action to authorize the
execution, delivery and performance by it of this Trust Agreement;

      (c)    this Trust Agreement has been duly authorized, executed and
delivered by each of the Property Trustee and the Bank and constitutes the valid
and legally binding agreement of

                                       30
<Page>

each of the Property Trustee and the Bank enforceable against it in accordance
with its terms, subject to bankruptcy, insolvency, fraudulent transfer,
reorganization, moratorium and similar laws of general applicability relating to
or affecting creditors' rights and to general equity principles;

      (d)    the execution, delivery and performance by each of the Property
Trustee and the Bank of this Trust Agreement have been duly authorized by all
necessary corporate or other action on the part of the Property Trustee and the
Bank and does not require any approval of the stockholders of the Property
Trustee or the Bank and such execution, delivery and performance will not (i)
violate the Property Trustee's or the Bank's charter or by-laws, (ii) violate
any provision of, or constitute, with or without notice or lapse of time, a
default under, or result in the creation or imposition of, any Lien on any
properties included in the Trust Property pursuant to the provisions of, any
indenture, mortgage, credit agreement, license or other agreement or instrument
to which the Property Trustee or the Bank is a party or by which it is bound, or
(iii) violate any law, governmental rule or regulation of the United States or
the State of Delaware, as the case may be, governing the banking or trust powers
of the Bank or the Property Trustee, as the case may be, or any order, judgment
or decree applicable to the Property Trustee or the Bank;

      (e)    neither the authorization, execution or delivery by the Property
Trustee or the Bank of this Trust Agreement nor the consummation of any of the
transactions by the Property Trustee or the Bank contemplated herein or therein
requires the consent or approval of, the giving of notice to, the registration
with or the taking of any other action with respect to, any governmental
authority or agency under any existing law of the State of Delaware governing
the banking or trust powers of the Bank or the Property Trustee, as the case may
be; and

      (f)    there are no proceedings pending or, to the best of the Bank's or
the Property Trustee's knowledge, threatened against or affecting the Bank or
the Property Trustee, as the case may be, in any court or before any
governmental authority, agency or arbitration board or tribunal which,
individually or in the aggregate, would materially and adversely affect the
Trust or would question the right, power and authority of the Bank or the
Property Trustee, as the case may be, to enter into or perform its obligations
as one of the Trustees under this Trust Agreement.

      SECTION 702. REPRESENTATIONS AND WARRANTIES OF THE DELAWARE BANK AND THE
DELAWARE TRUSTEE.

      The Delaware Bank and the Delaware Trustee, each severally on behalf of
and as to itself, as of the date hereof, and each Successor Delaware Trustee at
the time of the Successor Delaware Trustee's acceptance of its appointment as
Delaware Trustee hereunder (the term "Delaware Bank" being used to refer to such
Successor Delaware Trustee in its separate corporate capacity), hereby
represents and warrants (as applicable) for the benefit of the Depositor and the
Securityholders that:

      (a)    the Delaware Bank is a Delaware banking corporation duly organized,
validly existing and in good standing under the laws of the State of Delaware;

                                       31
<Page>

      (b)    each of the Delaware Trustee and the Delaware Bank has full
corporate power, authority and legal right to execute, deliver and perform its
obligations under this Trust Agreement and has taken all necessary action to
authorize the execution, delivery and performance by it of this Trust Agreement;

      (c)    this Trust Agreement has been duly authorized, executed and
delivered by each of the Delaware Trustee and the Delaware Bank and constitutes
the valid and legally binding agreement of each of the Delaware Trustee and the
Delaware Bank enforceable against it in accordance with its terms, subject to
bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium and
similar laws of general applicability relating to or affecting creditors' rights
and to general equity principles;

      (d)    the execution, delivery and performance by each of the Delaware
Trustee and the Delaware Bank of this Trust Agreement have been duly authorized
by all necessary corporate or other action on the part of the Delaware Trustee
and the Delaware Bank and does not require any approval of the stockholders of
the Delaware Trustee or the Delaware Bank and such execution, delivery and
performance will not (i) violate the Delaware Trustee's or the Delaware Bank's
charter or by-laws, (ii) violate any provision of, or constitute, with or
without notice or lapse of time, a default under, or result in the creation or
imposition of, any Lien on any properties included in the Trust Property
pursuant to the provisions of, any indenture, mortgage, credit agreement,
license or other agreement or instrument to which the Delaware Bank or the
Delaware Trustee is a party or by which it is bound, or (iii) violate any law,
governmental rule or regulation of the United States or the State of Delaware,
as the case may be, governing the banking or trust powers of the Delaware Bank
or the Delaware Trustee, as the case may be, or any order, judgment or decree
applicable to the Delaware Bank or the Delaware Trustee;

      (e)    neither the authorization, execution or delivery by the Delaware
Trustee or the Delaware Bank of this Trust Agreement nor the consummation of any
of the transactions by the Delaware Trustee or the Delaware Bank contemplated
herein or therein requires the consent or approval of, the giving of notice to,
the registration with or the taking of any other action with respect to, any
governmental authority or agency under any existing law of the State of Delaware
governing the banking or trust powers of the Delaware Bank or the Delaware
Trustee, as the case may be; and

      (f)    there are no proceedings pending or, to the best of the Delaware
Bank's or the Delaware Trustee's knowledge, threatened against or affecting the
Delaware Bank or the Delaware Trustee, as the case may be, in any court or
before any governmental authority, agency or arbitration board or tribunal
which, individually or in the aggregate, would materially and adversely affect
the Trust or would question the right, power and authority of the Delaware Bank
or the Delaware Trustee, as the case may be, to enter into or perform its
obligations as one of the Trustees under this Trust Agreement.

      SECTION 703. REPRESENTATIONS AND WARRANTIES OF DEPOSITOR.

      The Depositor hereby represents and warrants for the benefit of the
Securityholders that:

                                       32
<Page>

      (a)    the Trust Securities Certificates issued on the Closing Date on
behalf of the Trust have been duly authorized and will have been duly and
validly executed, issued and delivered by the Administrative Trustees pursuant
to the terms and provisions of, and in accordance with the requirements of, this
Trust Agreement and the Securityholders will be, as of such date, entitled to
the benefits of this Trust Agreement; and

      (b)    there are no taxes, fees or other governmental charges payable by
the Trust (or the Trustees on behalf of the Trust) under the laws of the State
of Delaware or any political subdivision thereof in connection with the
execution, delivery and performance by the Bank, the Property Trustee, the
Delaware Bank or the Delaware Trustee, as the case may be, of this Trust
Agreement.

                                  ARTICLE VIII.
                                  THE TRUSTEES

      SECTION 801. CERTAIN DUTIES AND RESPONSIBILITIES.

      (a)    The duties and responsibilities of the Trustees shall be as
provided by this Trust Agreement and, in the case of the Property Trustee, by
the Trust Indenture Act. Notwithstanding the foregoing, no provision of this
Trust Agreement shall require the Trustees to expend or risk their own funds or
otherwise incur any financial liability in the performance of any of their
duties hereunder, or in the exercise of any of their rights or powers, if they
shall have reasonable grounds for believing that repayment of such funds or
adequate indemnity against such risk or liability is not reasonably assured to
it. No Administrative Trustee nor the Delaware Trustee shall be liable for such
Trustee's acts or omissions hereunder except as a result of such Trustee's own
gross negligence or willful misconduct. The Property Trustee's liability shall
be determined under the Trust Indenture Act. Whether or not therein expressly so
provided, every provision of this Trust Agreement relating to the conduct or
affecting the liability of or affording protection to the Trustees shall be
subject to the provisions of this Section. To the extent that, at law or in
equity, a Trustee has duties (including fiduciary duties) and liabilities
relating thereto to the Trust or to the Securityholders, such Trustee shall not
be liable to the Trust or to any Securityholder for such Trustee's good faith
reliance on the provisions of this Trust Agreement. To the fullest extent
permitted by law, the provisions of this Trust Agreement, to the extent that
they restrict the duties and liabilities of the Trustees otherwise existing at
law or in equity, are agreed by the Depositor and the Securityholders to replace
such other duties and liabilities of the Trustees.

      (b)    All payments made by the Property Trustee or a Paying Agent in
respect of the Trust Securities shall be made only from the revenue and proceeds
from the Trust Property and only to the extent that there shall be sufficient
revenue or proceeds from the Trust Property to enable the Property Trustee or a
Paying Agent to make payments in accordance with the terms hereof. Each
Securityholder, by such Securityholder's acceptance of a Trust Security, agrees
that such Securityholder will look solely to the revenue and proceeds from the
Trust Property to the extent legally available for distribution to such
Securityholder as herein provided and that the Trustees are not personally
liable to such Securityholder for any amount distributable in respect of any
Trust Security or for any other liability in respect of any Trust Security. This
Section

                                       33
<Page>

801(b) does not limit the liability of the Trustees expressly set forth
elsewhere in this Trust Agreement or, in the case of the Property Trustee, in
the Trust Indenture Act.

      (c)    No provision of this Trust Agreement shall be construed to relieve
the Property Trustee from liability for its own negligent action, its own
negligent failure to act, or its own willful misconduct, except that:

             (i)    the Property Trustee shall not be liable for any error of
      judgment made in good faith by an authorized officer of the Property
      Trustee, unless it shall be proved that the Property Trustee was negligent
      in ascertaining the pertinent facts;

             (ii)   the Property Trustee shall not be liable with respect to any
      action taken or omitted to be taken by it in good faith in accordance with
      the direction of the Holders of not less than a majority in Liquidation
      Amount of the Trust Securities relating to the time, method and place of
      conducting any proceeding for any remedy available to the Property
      Trustee, or exercising any trust or power conferred upon the Property
      Trustee under this Trust Agreement;

             (iii)  the Property Trustee's sole duty with respect to the
      custody, safe keeping and physical preservation of the Subordinated
      Debentures and the Payment Account shall be to deal with such Property in
      a similar manner as the Property Trustee deals with similar property for
      its own account, subject to the protections and limitations on liability
      afforded to the Property Trustee under this Trust Agreement and the Trust
      Indenture Act;

             (iv)   the Property Trustee shall not be liable for any interest on
      any money received by it except as it may otherwise agree with the
      Depositor and money held by the Property Trustee need not be segregated
      from other funds held by it except in relation to the Payment Account
      maintained by the Property Trustee pursuant to Section 301 and except to
      the extent otherwise required by law; and

             (v)    the Property Trustee shall not be responsible for monitoring
      the compliance by the Administrative Trustees or the Depositor with their
      respective duties under this Trust Agreement, nor shall the Property
      Trustee be liable for the negligence, default or misconduct of the
      Administrative Trustees or the Depositor.

      SECTION 802. CERTAIN NOTICES.

      (a)    Within 5 Business Days after the occurrence of any Event of Default
actually known to the Property Trustee, the Property Trustee shall transmit, in
the manner and to the extent provided in Section 1008, notice of such Event of
Default to the Securityholders, the Administrative Trustees and the Depositor,
unless such Event of Default shall have been cured or waived. For purposes of
this Section the term "Event of Default" means any event that is, or after
notice or lapse of time or both would become, an Event of Default.

      (b)    The Administrative Trustees shall transmit, to the Securityholders
in the manner and to the extent provided in Section 1008, notice of the
Depositor's election to begin or further

                                       34
<Page>

extend an Extension Period on the Junior Subordinated Debentures (unless such
election shall have been revoked) within the time specified for transmitting
such notice to the holders of the Junior Subordinated Debentures pursuant to the
Indenture as originally executed.

      SECTION 803. CERTAIN RIGHTS OF PROPERTY TRUSTEE.

      Subject to the provisions of Section 801:

      (a)    the Property Trustee may rely and shall be protected in acting or
refraining from acting in good faith upon any resolution, Opinion of Counsel,
certificate, written representation of a Holder or transferee, certificate of
auditors or any other certificate, statement, instrument, opinion, report,
notice, request, consent, order, appraisal, bond, debenture, note, other
evidence of indebtedness or other paper or document believed by it to be genuine
and to have been signed or presented by the proper party or parties;

      (b)    if (i) in performing its duties under this Trust Agreement the
Property Trustee is required to decide between alternative courses of action or
(ii) in construing any of the provisions of this Trust Agreement the Property
Trustee finds the same ambiguous or inconsistent with other provisions contained
herein or (iii) the Property Trustee is unsure of the application of any
provision of this Trust Agreement, then, except as to any matter as to which the
Preferred Securityholders are entitled to vote under the terms of this Trust
Agreement, the Property Trustee shall deliver a notice to the Depositor
requesting written instructions of the Depositor as to the course of action to
be taken and the Property Trustee shall take such action, or refrain from taking
such action, as the Property Trustee shall be instructed in writing to take, or
to refrain from taking, by the Depositor; provided, however, that if the
Property Trustee does not receive such instructions of the Depositor within ten
Business Days after it has delivered such notice, or such reasonably shorter
period of time set forth in such notice (which to the extent practicable shall
not be less than two Business Days), it may, but shall be under no duty to, take
or refrain from taking such action not inconsistent with this Trust Agreement as
it shall deem advisable and in the best interests of the Securityholders, in
which event the Property Trustee shall have no liability except for its own bad
faith, negligence or willful misconduct;

      (c)    any direction or act of the Depositor or the Administrative
Trustees contemplated by this Trust Agreement shall be sufficiently evidenced by
an Officers' Certificate;

      (d)    whenever in the administration of this Trust Agreement, the
Property Trustee shall deem it desirable that a matter be established before
undertaking, suffering or omitting any action hereunder, the Property Trustee
(unless other evidence is herein specifically prescribed) may, in the absence of
bad faith on its part, request and conclusively rely upon an Officer's
Certificate which, upon receipt of such request, shall be promptly delivered by
the Depositor or the Administrative Trustees;

      (e)    the Property Trustee shall have no duty to see to any recording,
filing or registration of any instrument (including any financing or
continuation statement or any filing under tax or securities laws) or any
rerecording, refiling or reregistration thereof;

                                       35
<Page>

      (f)    the Property Trustee may consult with counsel of its choice and the
advice of such counsel shall be full and complete authorization and protection
in respect of any action taken, suffered or omitted by it hereunder in good
faith and in reliance thereon and in accordance with such advice (such counsel
may be counsel to the Depositor or any of its Affiliates, and may include any of
its employees); the Property Trustee shall have the right at any time to seek
instructions concerning the administration of this Trust Agreement from any
court of competent jurisdiction;

      (g)    the Property Trustee shall be under no obligation to exercise any
of the rights or powers vested in it by this Trust Agreement at the request or
direction of any of the Securityholders pursuant to this Trust Agreement, unless
such Securityholders shall have offered to the Property Trustee reasonable
security or indemnity against the costs, expenses and liabilities which might be
incurred by it in compliance with such request or direction;

      (h)    the Property Trustee shall not be bound to make any investigation
into the facts or matters stated in any resolution, certificate, statement,
instrument, opinion, report, notice, request, consent, order, approval, bond,
debenture, note or other evidence of indebtedness or other paper or document,
unless requested in writing to do so by one or more Securityholders, but the
Property Trustee may make such further inquiry or investigation into such facts
or matters as it may see fit;

      (i)    the Property Trustee may execute any of the trusts or powers
hereunder or perform any duties hereunder either directly or by or through its
agents or attorneys, provided that the Property Trustee shall be responsible for
its own negligence or recklessness with respect to selection of any agent or
attorney appointed by it hereunder;

      (j)    whenever in the administration of this Trust Agreement the Property
Trustee shall deem it desirable to receive instructions with respect to
enforcing any remedy or right or taking any other action hereunder, the Property
Trustee (i) may request instructions from the Holders of the Trust Securities
which instructions may only be given by the Holders of the same proportion in
Liquidation Amount of the Trust Securities as would be entitled to direct the
Property Trustee under the terms of the Trust Securities in respect of such
remedy, right or action, (ii) may refrain from enforcing such remedy or right or
taking such other action until such instructions are received, and (iii) shall
be protected in acting in accordance with such instructions; and

      (k)    except as otherwise expressly provided by this Trust Agreement, the
Property Trustee shall not be under any obligation to take any action that is
discretionary under the provisions of this Trust Agreement. No provision of this
Trust Agreement shall be deemed to impose any duty or obligation on the Property
Trustee to perform any act or acts or exercise any right, power, duty or
obligation conferred or imposed on it, in any jurisdiction in which it shall be
illegal, or in which the Property Trustee shall be unqualified or incompetent in
accordance with applicable law, to perform any such act or acts, or to exercise
any such right, power, duty or obligation. No permissive power or authority
available to the Property Trustee shall be construed to be a duty.

                                       36
<Page>

      SECTION 804. NOT RESPONSIBLE FOR RECITALS OR ISSUANCE OF SECURITIES.

      The recitals contained herein and in the Trust Securities Certificates
shall be taken as the statements of the Trust, and the Trustees do not assume
any responsibility for their correctness. The Trustees shall not be accountable
for the use or application by the Depositor of the proceeds of the Junior
Subordinated Debentures.

      SECTION 805. MAY HOLD SECURITIES.

      Any Trustee or any other agent of any Trustee or the Trust, in its
individual or any other capacity, may become the owner or pledgee of Trust
Securities and, subject to Sections 808 and 813 and except as provided in the
definition of the term "Outstanding" in Article I, may otherwise deal with the
Trust with the same rights it would have if it were not a Trustee or such other
agent.

      SECTION 806. COMPENSATION; INDEMNITY; FEES.

      The Depositor agrees:

      (a)    to pay to the Trustees from time to time reasonable compensation
for all services rendered by them hereunder (which compensation shall not be
limited by any provision of law in regard to the compensation of a trustee of an
express trust);

      (b)    except as otherwise expressly provided herein, to reimburse the
Trustees upon request for all reasonable expenses, disbursements and advances
incurred or made by the Trustees in accordance with any provision of this Trust
Agreement (including the reasonable compensation and the expenses and
disbursements of its agents and counsel), except any such expense, disbursement
or advance as may be attributable to such Trustee's negligence, bad faith or
willful misconduct (or, in the case of the Administrative Trustees or the
Delaware Trustee, any such expense, disbursement or advance as may be
attributable to its, his or her gross negligence, bad faith or willful
misconduct); and

      (c)    to indemnify each of the Trustees or any predecessor Trustee for,
and to hold the Trustees harmless against, any loss, damage, claim, liability,
penalty or expense incurred without negligence or bad faith on its part, arising
out of or in connection with the acceptance or administration of this Trust
Agreement, including the costs and expenses of defending itself against any
claim or liability in connection with the exercise or performance of any of its
powers or duties hereunder, except any such cost or expense as may be
attributable to such Trustee's negligence, bad faith or willful misconduct (or,
in the case of the Administrative Trustees or the Delaware Trustee, any such
cost or expense as may be attributable to its, his or her gross negligence, bad
faith or willful misconduct).

      No Trustee may claim any Lien on any Trust Property as a result of any
amount due pursuant to this Section 806.

                                       37
<Page>

      SECTION 807. CORPORATE PROPERTY TRUSTEE REQUIRED; ELIGIBILITY OF TRUSTEES.

      (a)    There shall at all times be a Property Trustee hereunder with
respect to the Trust Securities. The Property Trustee shall be a Person that is
eligible pursuant to the Trust Indenture Act to act as such and has a combined
capital and surplus of at least $50,000,000. If any such Person publishes
reports of condition at least annually, pursuant to law or to the requirements
of its supervising or examining authority, then for the purposes of this
Section, the combined capital and surplus of such Person shall be deemed to be
its combined capital and surplus as set forth in its most recent report of
condition so published. If at any time the Property Trustee with respect to the
Trust Securities shall cease to be eligible in accordance with the provisions of
this Section, it shall resign immediately in the manner and with the effect
hereinafter specified in this Article.

      (b)    There shall at all times be one or more Administrative Trustees
hereunder with respect to the Trust Securities. Each Administrative Trustee
shall be either a natural person who is at least 21 years of age or a legal
entity that shall act through one or more persons authorized to bind that
entity.

      (c)    There shall at all times be a Delaware Trustee with respect to the
Trust Securities. The Delaware Trustee shall either be (i) a natural person who
is at least 21 years of age and a resident of the State of Delaware or (ii) a
legal entity with its principal place of business in the State of Delaware and
that otherwise meets the requirements of applicable Delaware law that shall act
through one or more persons authorized to bind such entity.

      SECTION 808. CONFLICTING INTERESTS.

      If the Property Trustee has or shall acquire a conflicting interest within
the meaning of the Trust Indenture Act, the Property Trustee shall either
eliminate such interest or resign, to the extent and in the manner provided by,
and subject to the provisions of, the Trust Indenture Act and this Trust
Agreement.

      SECTION 809. CO-TRUSTEES AND SEPARATE TRUSTEE.

      Unless an Event of Default shall have occurred and be continuing, at any
time or times, for the purpose of meeting the legal requirements of the Trust
Indenture Act or of any jurisdiction in which any part of the Trust Property may
at the time be located, the Depositor and the Administrative Trustees shall have
power to appoint, and upon the written request of the Property Trustee, the
Depositor and the Administrative Trustees shall for such purpose join with the
Property Trustee in the execution, delivery and performance of all instruments
and agreements necessary or proper to appoint, one or more Persons approved by
the Property Trustee either to act as co-trustee, jointly with the Property
Trustee, of all or any part of such Trust Property, or to the extent required by
law to act as separate trustee of any such property, in either case with such
powers as may be provided in the instrument of appointment, and to vest in such
Person or Persons in the capacity aforesaid, any property, title, right or power
deemed necessary or desirable, subject to the other provisions of this Section.
If the Depositor and the Administrative Trustees do not join in such appointment
within 15 days after the receipt by them

                                       38
<Page>

of a request so to do, or in case a Debenture Event of Default has occurred and
is continuing, the Property Trustee alone shall have power to make such
appointment. Any co-trustee or separate trustee appointed pursuant to this
Section shall either be (i) a natural person who is at least 21 years of age and
a resident of the United States or (ii) a legal entity with its principal place
of business in the United States that shall act through one or more persons
authorized to bind such entity.

      Should any written instrument from the Depositor be required by any
co-trustee or separate trustee so appointed for more fully confirming to such
co-trustee or separate trustee such property, title, right, or power, any and
all such instruments shall, on request, be executed, acknowledged, and delivered
by the Depositor.

      Every co-trustee or separate trustee shall, to the extent permitted by
law, but to such extent only, be appointed subject to the following terms,
namely:

      (a)    The Trust Securities shall be executed and delivered and all
rights, powers, duties and obligations hereunder in respect of the custody of
securities, cash and other personal property held by, or required to be
deposited or pledged with, the Trustees specified hereunder, shall be exercised,
solely by such Trustees and not by such co-trustee or separate trustee.

      (b)    The rights, powers, duties and obligations hereby conferred or
imposed upon the Property Trustee in respect of any property covered by such
appointment shall be conferred or imposed upon and exercised or performed by the
Property Trustee or by the Property Trustee and such co-trustee or separate
trustee jointly, as shall be provided in the instrument appointing such
co-trustee or separate trustee, except to the extent that under any law of any
jurisdiction in which any particular act is to be performed, the Property
Trustee shall be incompetent or unqualified to perform such act, in which event
such rights, powers, duties and obligations shall be exercised and performed by
such co-trustee or separate trustee.

      (c)    The Property Trustee at any time, by an instrument in writing
executed by it, with the written concurrence of the Depositor, may accept the
resignation of or remove any co-trustee or separate trustee appointed under this
Section, and, in case a Debenture Event of Default has occurred and is
continuing, the Property Trustee shall have power to accept the resignation of,
or remove, any such co-trustee or separate trustee without the concurrence of
the Depositor. Upon the written request of the Property Trustee, the Depositor
shall join with the Property Trustee in the execution, delivery and performance
of all instruments and agreements necessary or proper to effectuate such
resignation or removal. A successor to any co-trustee or separate trustee so
resigned or removed may be appointed in the manner provided in this Section 809.

      (d)    No co-trustee or separate trustee hereunder shall be personally
liable by reason of any act or omission of the Property Trustee or any other
trustee hereunder.

      (e)    The Property Trustee shall not be liable by reason of any act of a
co-trustee or separate trustee.

                                       39
<Page>

      (f)    Any Act of Holders delivered to the Property Trustee shall be
deemed to have been delivered to each such co-trustee and separate trustee.

      SECTION 810. RESIGNATION AND REMOVAL; APPOINTMENT OF SUCCESSOR.

      No resignation or removal of any Trustee (the "Relevant Trustee") and no
appointment of a successor Trustee pursuant to this Article shall become
effective until the acceptance of appointment by the successor Trustee in
accordance with the applicable requirements of Section 811.

      Subject to the immediately preceding paragraph, the Relevant Trustee may
resign at any time with respect to the Trust Securities by giving written notice
thereof to the Property Trustee and the Depositor. If the instrument of
acceptance by the successor Trustee required by Section 811 shall not have been
delivered to the Relevant Trustee within 30 days after the giving of such notice
of resignation, the Relevant Trustee may petition, at the expense of the
Depositor, any court of competent jurisdiction for the appointment of a
successor Relevant Trustee with respect to the Trust Securities.

      Unless a Debenture Event of Default shall have occurred and be continuing,
any Trustee may be removed at any time by Act of the Common Securityholder. If a
Debenture Event of Default shall have occurred and be continuing, the Property
Trustee or the Delaware Trustee, or both of them, may be removed at such time by
Act of the Holders of a majority in Liquidation Amount of the Capital
Securities, delivered to the Relevant Trustee (in its individual capacity and on
behalf of the Trust). An Administrative Trustee may be removed by the Common
Securityholder at any time. In no event will the Holders of the Capital
Securities have the right to vote to appoint, remove or replace the
Administrative Trustees.

      If any Trustee shall resign, be removed or become incapable of acting as
Trustee, or if a vacancy shall occur in the office of any Trustee for any cause,
at a time when no Debenture Event of Default shall have occurred and be
continuing, the Common Securityholder, by Act of the Common Securityholder
delivered to the retiring Trustee, shall promptly appoint a successor Trustee or
Trustees with respect to the Trust Securities and the Trust, and the successor
Trustee shall comply with the applicable requirements of Section 811. If the
Property Trustee or the Delaware Trustee shall resign, be removed or become
incapable of continuing to act as the Property Trustee or the Delaware Trustee,
as the case may be, at a time when a Debenture Event of Default shall have
occurred and is continuing, the Preferred Securityholders, by Act of the
Securityholders of a majority in Liquidation Amount of the Capital Securities
then Outstanding delivered to the retiring Relevant Trustee, shall promptly
appoint a successor Relevant Trustee or Trustees with respect to the Trust
Securities and the Trust, and such successor Trustee shall comply with the
applicable requirements of Section 811. If an Administrative Trustee shall
resign, be removed or become incapable of acting as Administrative Trustee, at a
time when a Debenture Event of Default shall have occurred and be continuing,
the Common Securityholder, by Act of the Common Securityholder delivered to an
Administrative Trustee, shall promptly appoint a successor Administrative
Trustee or Administrative Trustees with respect to the Trust Securities and the
Trust, and such successor Administrative Trustee or Administrative Trustees

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shall comply with the applicable requirements of Section 811. If no successor
Relevant Trustee with respect to the Trust Securities shall have been so
appointed by the Common Securityholder or the Preferred Securityholders and
accepted appointment in the manner required by Section 811, any Securityholder
who has been a Securityholder of Trust Securities on behalf of such
Securityholder and all others similarly situated may petition a court of
competent jurisdiction for the appointment Trustee with respect to the Trust
Securities.

      The Property Trustee shall give notice of each resignation and each
removal of a Trustee and each appointment of a successor Trustee to all
Securityholders in the manner provided in Section 1008 and shall give notice to
the Depositor. Each notice shall include the name of the successor Relevant
Trustee and the address of its Corporate Trust office if it is the Property
Trustee.

      Notwithstanding the foregoing or any other provision of this Trust
Agreement, in the event any Administrative Trustee or a Delaware Trustee who is
a natural person dies or becomes, in the opinion of the Depositor, incompetent
or incapacitated, the vacancy created by such death, incompetence or incapacity
may be filled by (a) the unanimous act of remaining Administrative Trustees if
there are at least two of them or (b) otherwise by the Depositor (with the
successor in each case being a Person who satisfies the eligibility requirement
for Administrative Trustees set forth in Section 807).

      SECTION 811. ACCEPTANCE OF APPOINTMENT BY SUCCESSOR.

      In case of the appointment hereunder of a successor Relevant Trustee with
respect to the Trust Securities and the Trust, the retiring Relevant Trustee (if
requested by the Depositor) and each successor Relevant Trustee with respect to
the Trust Securities shall execute and deliver an instrument hereto wherein each
successor Relevant Trustee shall accept such appointment and which shall contain
such provisions as shall be necessary or desirable to transfer and confirm to,
and to vest in, each successor Relevant Trustee all the rights, powers, trusts
and duties of the retiring Relevant Trustee with respect to the Trust Securities
and the Trust and upon the execution and delivery of such instrument the
resignation or removal of the retiring Relevant Trustee shall become effective
to the extent provided therein and each such successor Relevant Trustee, without
any further act, deed or conveyance, shall become vested with all the rights,
powers, trusts and duties of the retiring Relevant Trustee with respect to the
Trust Securities and the Trust; but, on request of the Trust or any successor
Relevant Trustee such retiring Relevant Trustee shall duly assign, transfer and
deliver to such successor Relevant Trustee all Trust Property, all proceeds
thereof and money held by such retiring Relevant Trustee hereunder with respect
to the Trust Securities and the Trust.

      Upon request of any such successor Relevant Trustee, the Trust shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Relevant Trustee all such rights, powers and trusts
referred to in the immediately preceding paragraph, as the case may be.

      No successor Relevant Trustee shall accept its appointment unless at the
time of such acceptance such successor Relevant Trustee shall be qualified and
eligible under this Article.

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      SECTION 812. MERGER, CONVERSION, CONSOLIDATION OR SUCCESSION TO BUSINESS.

      Any Person into which the Property Trustee, the Delaware Trustee or any
Administrative Trustee that is not a natural person may be merged or converted
or with which it may be consolidated, or any Person resulting from any merger,
conversion or consolidation to which such Relevant Trustee shall be a party, or
any corporation succeeding to all or substantially all the corporate trust
business of such Relevant Trustee, shall be the successor of such Relevant
Trustee hereunder, provided such Person shall be otherwise qualified and
eligible under this Article, without the execution or filing of any paper or any
further act on the part of any of the parties hereto.

      SECTION 813. PREFERENTIAL COLLECTION OF CLAIMS AGAINST DEPOSITOR OR TRUST.

      If and when the Property Trustee or the Delaware Trustee shall be or
become a creditor of the Depositor or the Trust (or any other obligor upon the
Junior Subordinated Debentures or the Trust Securities), the Property Trustee or
the Delaware Trustee, as the case may be, shall be subject to and shall take all
actions necessary in order to comply with the provisions of the Trust Indenture
Act regarding the collection of claims against the Depositor or Trust (or any
such other obligor).

      SECTION 814. REPORTS BY PROPERTY TRUSTEE.

      (a)    Not later than January 31 of each year commencing with January 31,
2003, the Property Trustee shall transmit to all Securityholders in accordance
with Section 1008, and to the Depositor, a brief report dated as of the
preceding December 31 with respect to:

             (i)    its eligibility under Section 807 or, in lieu thereof, if to
      the best of its knowledge it has continued to be eligible under said
      Section, a written statement to such effect; and

             (ii)   any change in the property and funds in its possession as
      Property Trustee since the date of its last report and any action taken by
      the Property Trustee in the performance of its duties hereunder which it
      has not previously reported and which in its opinion materially affects
      the Trust Securities.

      (b)    In addition the Property Trustee shall transmit to Securityholders
such reports concerning the Property Trustee and its actions under this Trust
Agreement as may be required pursuant to the Trust Indenture Act at the times
and in the manner provided pursuant thereto.

      (c)    A copy of each such report shall, at the time of such transmission
to Holders, be filed by the Property Trustee with each national securities
exchange or other organization upon which the Trust Securities may be listed,
with the Commission and with the Depositor.

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      SECTION 815. REPORTS TO THE PROPERTY TRUSTEE.

      The Depositor and the Administrative Trustees on behalf of the Trust shall
provide to the Property Trustee such documents, reports and information as
required by Section 314 of the Trust Indenture Act (if any) and the compliance
certificate required by Section 314(a) of the Trust Indenture Act in the form,
in the manner and at the times required by Section 314 of the Trust Indenture
Act.

      SECTION 816. EVIDENCE OF COMPLIANCE WITH CONDITIONS PRECEDENT.

      Each of the Depositor and the Administrative Trustees on behalf of the
Trust shall provide to the Property Trustee such evidence of compliance with the
conditions precedent, if any, provided for in this Trust Agreement that relate
to any of the matters set forth in Section 314(c) of the Trust Indenture Act.
Any certificate or opinion required to be given by an officer pursuant to
Section 314(c)(1) of the Trust Indenture Act shall be given in the form of an
Officers' Certificate.

      SECTION 817. NUMBER OF TRUSTEES.

      (a)    The number of Trustees shall be five, provided that the Holder of
all of the Common Securities by written instrument may increase or decrease the
number of Administrative Trustees. The Property Trustee and the Delaware Trustee
may be the same Person.

      (b)    If a Trustee ceases to hold office for any reason and the number of
Administrative Trustees is not reduced pursuant to Section 817(a), or if the
number of Trustees is increased pursuant to Section 817(a), a vacancy shall
occur. The vacancy shall be filled with a Trustee appointed in accordance with
Section 810.

      (c)    The death, resignation, retirement, removal, bankruptcy,
incompetence or incapacity to perform the duties of a Trustee shall not operate
to dissolve, terminate or annul the Trust. Whenever a vacancy in the number of
Administrative Trustees shall occur, until such vacancy is filled by the
appointment of an Administrative Trustee in accordance with Section 810, the
Administrative Trustees in office, regardless of their number (and
notwithstanding any other provision of this Agreement), shall have all the
powers granted to the Administrative Trustees and shall discharge all the duties
imposed upon the Administrative Trustees by this Trust Agreement.

      SECTION 818. DELEGATION OF POWER.

      (a)    Any Administrative Trustee may, by power of attorney consistent
with applicable law, delegate to any other natural person over the age of 21 his
or her power for the purpose of executing any documents contemplated in Section
207(a); and

      (b)    The Administrative Trustees shall have power to delegate from time
to time to such of their number or to the Depositor the doing of such things and
the execution of such

                                       43
<Page>

instruments either in the name of the Trust or the names of the Administrative
Trustees or otherwise as the Administrative Trustees may deem expedient, to the
extent such delegation is not prohibited by applicable law or contrary to the
provisions of the Trust, as set forth herein.

      SECTION 819. VOTING.

      Except as otherwise provided in this Trust Agreement, the consent or
approval of the Administrative Trustees shall require consent or approval by not
less than a majority of the Administrative Trustees, unless there are only two,
in which case both must consent.

                                   ARTICLE IX.
                DISSOLUTION, TERMINATION, LIQUIDATION AND MERGER

      SECTION 901. DISSOLUTION UPON EXPIRATION DATE.

      Unless earlier dissolved, the Trust shall automatically dissolve on
___________, 2037 (the "Expiration Date").

      SECTION 902. EARLY TERMINATION.

      The first to occur of any of the following events is an "Early Termination
Event," the occurrence of which shall cause the Trust to dissolve:

      (a)    the occurrence of a Bankruptcy Event in respect of, or the
dissolution or liquidation of, the Depositor;

      (b)    delivery of written direction to the Property Trustee by the
Depositor at any time (which direction is wholly optional and within the
discretion of the Depositor) to dissolve the Trust and, after satisfaction of
liabilities to creditors of the Trust are provided by applicable law, distribute
the Junior Subordinated Debentures to Securityholders in exchange for the
Capital Securities in accordance with Section 904;

      (c)    the redemption of all of the Capital Securities in connection with
the redemption of all of the Junior Subordinated Debentures; and

      (d)    an order for dissolution of the Trust shall have been entered by a
court of competent jurisdiction.

      SECTION 903. TERMINATION.

      The respective obligations and responsibilities of the Trustees and the
Trust created and continued hereby shall terminate upon the latest to occur of
the following: (a) the distribution by the Property Trustee to Securityholders
upon the liquidation of the Trust pursuant to Section 904, or upon the
redemption of all of the Trust Securities pursuant to Section 402, of all
amounts required to be distributed hereunder upon the final payment of the Trust
Securities; (b) the

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payment of any expenses owed by the Trust; (c) the discharge of all
administrative duties of the Administrative Trustees, including the performance
of any tax reporting obligations with respect to the Trust or the
Securityholders, and (d) the filing of a Certificate of cancellation by the
Administrative Trustees under the Delaware Business Trust Act.

      SECTION 904. LIQUIDATION.

      (a)    If an Early Termination Event specified in clause (a), (b), or (d)
of Section 902 occurs or upon the Expiration Date, the Trust shall be liquidated
by the Trustees as expeditiously as the Trustees determine to be possible by
distributing, after satisfaction of liabilities to creditors of the Trust as
provided by applicable law, to each Securityholder a Like Amount of Junior
Subordinated Debentures, subject to Section 904(d). Notice of liquidation shall
be given by the Property Trustee by first-class mail, postage prepaid, mailed
not later than 30 nor more than 60 days prior to the Liquidation Date to each
Holder of Trust Securities at such Holder's address appearing in the Securities
Register. All notices of liquidation shall:

             (i)    state the Liquidation Date;

             (ii)   state that from and after the Liquidation Date, the Trust
      Securities will no longer be deemed to be Outstanding and any Trust
      Securities Certificates not surrendered for exchange will be deemed to
      represent a Like Amount of Junior Subordinated Debentures; and

             (iii)  provide such information with respect to the mechanics by
      which Holders may exchange Trust Securities certificates for Junior
      Subordinated Debentures, or if Section 904(d) applies receive a
      Liquidation Distribution, as the Administrative Trustees or the Property
      Trustee shall deem appropriate.

      (b)    Except where Section 902(c) or 904(d) applies, in order to effect
the liquidation of the Trust and distribution of the Junior Subordinated
Debentures to Securityholders, the Property Trustee shall establish a record
date for such distribution (which shall be not more than 45 days prior to the
Liquidation Date) and, either itself acting as exchange agent or through the
appointment of a separate exchange agent, shall establish such procedures as it
shall deem appropriate to effect the distribution of Junior Subordinated
Debentures in exchange for the Outstanding Trust Securities Certificates.

      (c)    Except where Section 902(c) or 904(d) applies, after the
Liquidation Date, (i) the Trust Securities will no longer be deemed to be
Outstanding, (ii) certificates (or, at the election of the Depositor a Global
Subordinated Debenture, subject to the provisions of the Indenture) representing
a Like Amount of Junior Subordinated Debentures will be issued to holders of
Trust Securities Certificates upon surrender of such certificates to the
Administrative Trustees or their agent for exchange, (iii) the Depositor shall
use its reasonable efforts to have the Junior Subordinated Debentures listed on
the Nasdaq National Market or on such other securities exchange or other
organization as the Capital Securities may then be listed or traded, (iv) any
Trust Securities Certificates not so surrendered for exchange will be deemed to
represent a Like Amount of Junior Subordinated Debentures, accruing interest at
the rate provided for in the

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<Page>

Junior Subordinated Debentures from the last Distribution Date on which a
Distribution was made on such Trust Securities Certificates until such
certificates are so surrendered (and until such certificates are so surrendered,
no payments of interest or principal will be made to holders of Trust Securities
Certificates with respect to such Junior Subordinated Debentures) and (v) all
rights of Securityholders holding Trust Securities will cease, except the right
of such Securityholders to receive Junior Subordinated Debentures upon surrender
of Trust Securities Certificates.

      (d)    In the event that, notwithstanding the other provisions of this
Section 904, whether because of an order for dissolution entered by a court of
competent jurisdiction or otherwise, distribution of the Junior Subordinated
Debentures in the manner provided herein is determined by the Property Trustee
not to be practical, the Trust Property shall be liquidated, and the Trust shall
be wound-up by the Property Trustee in such manner as the Property Trustee
determines. In such event, Securityholders will be entitled to receive out of
the assets of the Trust available for distribution to Securityholders, after
satisfaction of liabilities to creditors of the Trust as provided by applicable
law, an amount equal to the Liquidation Amount per Trust Security plus
accumulated and unpaid Distributions thereon to the date of payment (such amount
being the "Liquidation Distribution"). If, upon any such winding-up, the
Liquidation Distribution can be paid only in part because the Trust has
insufficient assets available to pay in full the aggregate Liquidation
Distribution, then, subject to the next succeeding sentence, the amounts payable
by the Trust on the Trust Securities shall be paid on a pro rata basis (based
upon Liquidation Amounts). The Holder of the Common Securities will be entitled
to receive Liquidation Distributions upon any such winding-up pro rata
(determined as aforesaid) with Holders of Capital Securities, except that, if a
Debenture Event of Default has occurred and is continuing, the Capital
Securities shall have a priority over the Common Securities.

      SECTION 905. MERGERS, CONSOLIDATIONS, AMALGAMATIONS OR REPLACEMENTS OF THE
TRUST.

      The Trust may not merge with or into, consolidate, amalgamate, or be
replaced by, or convey, transfer or lease its properties and assets
substantially as an entirety to any corporation or other Person, except pursuant
Article IX. At the request of the Depositor, with the consent of the
Administrative Trustees and without the consent of the holders of the Capital
Securities, the Property Trustee or the Delaware Trustee, the Trust may merge
with or into, consolidate, amalgamate, be replaced by or convey, transfer or
lease its properties and assets substantially as an entirety to a trust
organized as such under the laws of any state; provided, that (i) such successor
entity either (a) expressly assumes all of the obligations of the Trust with
respect to the Capital Securities or (b) substitutes for the Capital Securities
other securities having substantially the same terms as the Capital Securities
(the "Successor Securities") so long as the Successor Securities rank the same
as the Capital Securities rank in priority with respect to distributions and
payments upon liquidation, redemption and otherwise, (ii) the Depositor
expressly appoints a trustee of such successor entity possessing substantially
the same powers and duties as the Property Trustee as the holder of the Junior
Subordinated Debentures, (iii) such merger, consolidation, amalgamation,
replacement, conveyance, transfer or lease does not adversely affect the rights,
preferences and privileges of the Holders of the Capital Securities (including
any Successor Securities) in any material respect, (iv) such successor entity
has a purpose

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<Page>

substantially identical to that of the Trust, (v) the Successor Securities will
be listed or traded on any national securities exchange or other organization on
which the Capital Securities may then be listed, (vi) prior to such merger,
consolidation, amalgamation, replacement, conveyance, transfer or lease, the
Depositor has received an Opinion of Counsel experienced in such matters to the
effect that (a) such merger, consolidation, amalgamation, replacement,
conveyance, transfer or lease does not adversely affect the rights, preferences
and privileges of the Holders of the Capital Securities (including any Successor
Securities) in any material respect, and (b) following such merger,
consolidation, amalgamation, replacement, conveyance, transfer or lease, neither
the Trust nor such successor entity will be required to register as an
"investment company" under the Investment Company Act and (vii) the Depositor
owns all of the common securities of such successor entity and guarantees the
obligations of such successor entity under the Successor Securities at least to
the extent provided by the Guarantee. Notwithstanding the foregoing, the Trust
shall not, except with the consent of holders of 100% in Liquidation Amount of
the Capital Securities, consolidate, amalgamate, merge with or into, or be
replaced by or convey, transfer or lease its properties and assets substantially
as an entirety to any other Person or permit any other Person to consolidate,
amalgamate, merge with or into, or replace it, if such consolidation,
amalgamation, merger or replacement would cause the Trust or the successor
entity to be classified as other than a grantor trust for United States federal
income tax purposes.

                                   ARTICLE X.
                            MISCELLANEOUS PROVISIONS

      SECTION 1001. LIMITATION OF RIGHTS OF SECURITYHOLDERS.

      The death, bankruptcy, termination, dissolution or incapacity of any
Person having an interest, beneficial or otherwise, in Trust Securities shall
not operate to terminate this Trust Agreement, nor dissolve, terminate or annul
the Trust, nor entitle the legal representatives or heirs of such Person, to
claim an accounting, take any action or bring any proceeding in any court for a
partition or winding-up of the arrangements contemplated hereby, nor otherwise
affect the rights, obligations and liabilities of the parties hereto or any of
them.

      SECTION 1002. AMENDMENT.

      (a)    This Trust Agreement may be amended from time to time by the
Administrative Trustees and the Depositor, without the consent of any
Securityholders, (i) as provided in Section 811 with respect to acceptance of
appointment by a successor Trustee, (ii) to cure any ambiguity, correct or
supplement any provision herein or therein which may be inconsistent with any
other provision herein or therein, or to make any other provisions with respect
to matters or questions arising under this Trust Agreement, that shall not be
inconsistent with the other provisions of this Trust Agreement, or (iii) to
modify, eliminate or add to any provisions of this Trust Agreement to such
extent as shall be necessary to ensure that the Trust will be classified for
United States federal income tax purposes as a grantor trust at all times that
any Trust Securities are Outstanding or to ensure that the Trust will not be
required to register as an "investment company" under the Investment Company
Act; provided, however, that in the case of clause (ii), such action shall not
adversely affect in any material respect the interests of any Securityholder,

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<Page>

and any such amendments of this Trust Agreement shall become effective when
notice thereof is given to the Securityholders.

      (b)    Except as provided in Section 601(c) or Section 1002(c) hereof, any
provision of this Trust Agreement may be amended by the Administrative Trustees
and the Depositor (i) with the consent of Trust Securityholders representing not
less than a majority (based upon Liquidation Amounts) of the Trust Securities
then Outstanding and (ii) upon receipt by the Trustees of an Opinion of Counsel
to the effect that such amendment or the exercise of any power granted to the
Trustees in accordance with such amendment will not affect the Trust's status as
a grantor trust for United States federal income tax purposes or the Trust's
exemption from status of an "investment company" under the Investment Company
Act.

      (c)    In addition to and notwithstanding any other provision in this
Trust Agreement, without the consent of each affected Securityholder, this Trust
Agreement may not be amended to (i) change the amount or timing of any
Distribution on the Trust Securities or otherwise adversely affect the amount of
any Distribution required to be made in respect of the Trust Securities as of a
specified date or (ii) restrict the right of a Securityholder to institute suit
for the enforcement of any such payment on or after such date; notwithstanding
any other provision herein, without the unanimous consent of the
Securityholders, this paragraph (c) of this Section 1002 may not be amended.

      (d)    Notwithstanding any other provisions of this Trust Agreement, no
Trustee shall enter into or consent to any amendment to this Trust Agreement
which would cause the Trust to fail or cease to qualify for the exemption from
status of an "investment company" under the Investment Company Act or to fail or
cease to be classified as a grantor trust for United States federal income tax
purposes.

      (e)    Notwithstanding anything in this Trust Agreement to the contrary,
without the consent of the Depositor, this Trust Agreement may not be amended in
a manner which imposes any additional obligation on the Depositor.

      (f)    In the event that any amendment to this Trust Agreement is made,
the Administrative Trustees shall promptly provide to the Depositor a copy of
such amendment.

      (g)    No amendment of this Trust Agreement that affects the Property
Trustee's or the Delaware Trustee's own rights, duties or immunities under this
Trust Agreement shall be effective without obtaining the prior written consent
of the Property Trustee or the Delaware Trustee, as the case maybe. The Property
Trustee shall be entitled to receive an Opinion of Counsel and an Officers'
Certificate stating that any amendment to this Trust Agreement is in compliance
with this Trust Agreement.

      SECTION 1003. SEPARABILITY.

      In case any provision in this Trust Agreement or in the Trust Securities
Certificates shall be invalid, illegal or unenforceable, the validity, legality
and enforceability of the remaining provisions shall not in any way be affected
or impaired thereby.

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      SECTION 1004. GOVERNING LAW.

      THIS TRUST AGREEMENT AND THE RIGHTS AND OBLIGATIONS OF EACH OF THE
SECURITYHOLDERS, THE TRUST AND THE TRUSTEES WITH RESPECT TO THIS TRUST AGREEMENT
AND THE TRUST SECURITIES SHALL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY
THE LAWS OF THE STATE OF DELAWARE (WITHOUT REGARD TO CONFLICT OF LAWS
PRINCIPLES).

      SECTION 1005. PAYMENTS DUE ON NON-BUSINESS DAY.

      If the date fixed for any payment on any Trust Security shall be a day
that is not a Business Day, then such payment need not be made on such date but
may be made on the next succeeding day which is a Business Day (except as
otherwise provided in Sections 401(a) and 402(d)), with the same force and
effect as though made on the date fixed for such payment, and no distribution
shall accumulate thereon for the period after such date.

      SECTION 1006. SUCCESSORS.

      This Trust Agreement shall be binding upon and shall inure to the benefit
of any successor to the Depositor, the Trust or the Relevant Trustee(s),
including any successor by operation of law. Except in connection with a
consolidation, merger or sale involving the Depositor that is permitted under
Article Twelve of the Indenture and pursuant to which the assignee agrees in
writing to perform the Depositor's obligations hereunder, the Depositor shall
not assign its obligations hereunder.

      SECTION 1007. HEADINGS.

      The Article and Section headings are for convenience only and shall not
affect the construction of this Trust Agreement.

      SECTION 1008. REPORTS, NOTICES AND DEMANDS.

      Any report, notice, demand or other communication which by any provision
of this Trust Agreement is required or permitted to be given or served to or
upon any Securityholder or the Depositor may be given or served in writing by
deposit thereof, first-class postage prepaid, in the United States mail, hand
delivery or facsimile transmission, in each case, addressed, (a) in the case of
a Preferred Securityholder, to such Preferred Securityholder as such
Securityholder's name and address may appear on the Securities Register; and (b)
in the case of the Common Securityholder or the Depositor, to Community First
Bankshares, Inc., 520 Main Avenue, Fargo, North Dakota 58124-0001; Attention:
Chief Financial Officer; Facsimile No.: (701) 235-6019. Any notice to Preferred
Securityholders shall also be given to such owners as have, within two years
preceding the giving of such notice, filed their names and addresses with the
Property Trustee for that purpose. Such notice, demand or other communication to
or upon a Securityholder shall be deemed to have been sufficiently given or
made, for all purposes, upon hand delivery, mailing or transmission.

                                       49
<Page>

      Any notice, demand or other communication which by any provision of this
Trust Agreement is required or permitted to be given or served to or upon the
Trust, the Property Trustee or the Administrative Trustees shall be given in
writing addressed (until another address is published by the Trust) as follows:
(a) with respect to the Property Trustee to Wilmington Trust Company, Rodney
Square North, 1100 North Market Street, Wilmington, Delaware 19890-0001,
Attention: Corporate Trust Administration; (b) with respect to the Delaware
Trustee, to Wilmington Trust Company, Rodney Square North, 1100 North Market
Street, Wilmington, Delaware 19890-0001, Attention: Corporate Trust
Administration; and (c) with respect to the Administrative Trustees, to them at
the address above for notices to the Depositor, marked "Attention:
Administrative Trustees of CFB Capital ___." Such notice, demand or other
communication to or upon the Trust or the Property Trustee shall be deemed to
have been sufficiently given or made only upon actual receipt of the writing by
the Trust or the Property Trustee.

      SECTION 1009. AGREEMENT NOT TO PETITION.

      Each of the Trustees and the Depositor agree for the benefit of the
Securityholders that, until at least one year and one day after the Trust has
been terminated in accordance with Article IX, they shall not file, or join in
the filing of, a petition against the Trust under any bankruptcy, insolvency,
reorganization or other similar law (including, without limitation, the United
States Bankruptcy Code) (collectively, "Bankruptcy Laws") or otherwise join in
the commencement of any proceeding against the Trust under any Bankruptcy Law.
In the event the Depositor takes action in violation of this Section 1009, the
Property Trustee agrees, for the benefit of Securityholders, that at the expense
of the Depositor (which expense shall be paid prior to the filing), it shall
file an answer with the bankruptcy court or otherwise properly contest the
filing of such petition by the Depositor against the Trust or the commencement
of such action and raise the defense that the Depositor has agreed in writing
not to take such action and should be stopped and precluded therefrom. The
provisions of this Section 1009 shall survive the termination of this Trust
Agreement.

      SECTION 1010. TRUST INDENTURE ACT; CONFLICT WITH TRUST INDENTURE ACT.

      (a)    This Trust Agreement is subject to the provisions of the Trust
Indenture Act that are required to be part of this Trust Agreement and shall, to
the extent applicable, be governed by such provisions.

      (b)    The Property Trustee shall be the only Trustee which is a trustee
for the purposes of the Trust Indenture Act.

      (c)    If any provision hereof limits, qualifies or conflicts with another
provision hereof which is required to be included in this Trust Agreement by any
of the provisions of the Trust Indenture Act, such required provision shall
control. If any provision of this Trust Agreement modifies or excludes any
provision of the Trust Indenture Act which may be so modified or

                                       50
<Page>

excluded, the latter provision shall be deemed to apply to this Trust Agreement
as so modified or to be excluded, as the case may be.

      (d)    The application of the Trust Indenture Act to this Trust Agreement
shall not affect the nature of the Trust Securities as equity securities
representing undivided beneficial interests in the assets of the Trust.

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      SECTION 1011. ACCEPTANCE OF TERMS OF TRUST AGREEMENT, GUARANTEE AND
INDENTURE.

      THE RECEIPT AND ACCEPTANCE OF A TRUST SECURITY OR ANY INTEREST THEREIN BY
OR ON BEHALF OF A SECURITYHOLDER OR ANY BENEFICIAL OWNER, WITHOUT ANY SIGNATURE
OR FURTHER MANIFESTATION OF ASSENT, SHALL CONSTITUTE THE UNCONDITIONAL
ACCEPTANCE BY THE SECURITYHOLDER AND ALL OTHERS HAVING A BENEFICIAL INTEREST IN
SUCH TRUST SECURITY OF ALL THE TERMS AND PROVISIONS OF THIS TRUST AGREEMENT AND
AGREEMENT TO THE SUBORDINATION PROVISIONS AND OTHER TERMS OF THE GUARANTEE AND
THE INDENTURE, AND SHALL CONSTITUTE THE AGREEMENT OF THE TRUST, SUCH
SECURITYHOLDER AND SUCH OTHERS THAT THE TERMS AND PROVISIONS OF THIS TRUST
AGREEMENT SHALL BE BINDING, OPERATIVE AND EFFECTIVE AS BETWEEN THE TRUST AND
SUCH SECURITYHOLDER AND SUCH OTHERS.

                              COMMUNITY FIRST BANKSHARES, INC.,
                              as Depositor

                              By:
                                 -----------------------------------------------
                              Name:  Mark A. Anderson
                              Title:  President

                              WILMINGTON TRUST COMPANY,
                              as Property Trustee

                              By:
                                 -----------------------------------------------
                              Name:
                              Title:

                              WILMINGTON TRUST COMPANY,
                              as Delaware Trustee

                              By:
                                 -----------------------------------------------
                              Name:
                              Title:

                              --------------------------------------------------
                              Mark A. Anderson, As Administrative Trustee

                              --------------------------------------------------
                              Craig A. Weiss, As Administrative Trustee

                              --------------------------------------------------
                              Thomas R. Anderson, As Administrative Trustee

                                       52
<Page>

                                                                       Exhibit A

                              CERTIFICATE OF TRUST
                                       OF
                                 CFB CAPITAL ___

      This Certificate of Trust of CFB CAPITAL ___ (the "Trust"), dated
_____________ __, 2002, is being duly executed and filed by Wilmington Trust
Company, a Delaware banking corporation, and Mark A. Anderson, Craig A. Weiss,
and Thomas R. Anderson, each an individual, as trustees, to form a business
trust under the Delaware Business Trust Act (12 Del. C. Section 3801 et seq.)
(the "Act").

1.    NAME. The name of the business trust formed hereby is CFB Capital ___.

2.    DELAWARE TRUSTEE. The name and business address of the trustee of the
      Trust in the State of Delaware is Wilmington Trust Company, Rodney Square
      North, 1100 North Market Street, Wilmington, Delaware 19890-0001, Attn:
      Corporate Trust Administration.

3.    EFFECTIVE DATE. This Certificate of Trust shall be effective upon its
      filing.

      IN WITNESS WHEREOF, the undersigned, being all of the trustees of the
Trust, have executed this Certificate of Trust as of the date first above
written in accordance with Section 3811(a) of the Act.

                                           WILMINGTON TRUST COMPANY,
                                           as Trustee

                                           By:
                                              ----------------------------------
                                           Name:
                                           Title:

                                           -------------------------------------
                                           Thomas R. Anderson, as Trustee

                                       A-1
<Page>

                                                                       Exhibit C

                     [FORM OF COMMON SECURITIES CERTIFICATE]

               THIS CERTIFICATE IS NOT TRANSFERABLE EXCEPT TO THE
            DEPOSITOR OR AN AFFILIATE OF THE DEPOSITOR IN COMPLIANCE
                WITH APPLICABLE LAW AND SECTION 510 OF THE TRUST
                     AGREEMENT AND ONLY IN CONNECTION WITH A
                    SIMULTANEOUS DELEGATION AND ASSIGNMENT OF
                    THE EXPENSE AGREEMENT REFERRED TO THEREIN

Certificate Number                                   Number of Common Securities
C-

                    Certificate Evidencing Common Securities
                                       of
                                 CFB Capital ___
                            _______ Common Securities
                  (liquidation amount $25 per Common Security)

CFB Capital ___, a statutory business trust formed under the laws of the State
of Delaware (the "Issuer Trust"), hereby certifies that [NAME OF HOLDER] (the
"Holder") is the registered owner of ____________ common securities of the
Issuer Trust representing common undivided beneficial interests in the assets of
the __________ Trust and designated the CFB Capital ___% Common Securities
(liquidation amount $25 per Common Security) (the "Common Securities"). Except
in accordance with Section 510 of the Trust Agreement (as defined below) the
Common Securities are not transferable and any attempted transfer hereof other
than in accordance therewith shall be void. The designations, rights,
privileges, restrictions, preferences and other terms and provisions of the
Common Securities are set forth in, and this certificate and the Common
Securities represented hereby are issued and shall in all respects be subject to
the terms and provisions of, the Amended and Restated Trust Agreement of the
Issuer Trust, dated as of _______________ __, 2002, as the same may be amended
from time to time (the "Trust Agreement"), among Community First Bankshares,
Inc., as Depositor, Wilmington Trust Company, as Property Trustee, Wilmington
Trust Company, as Delaware Trustee, the Administrative Trustees named therein,
and the Holders, from time to time, of undivided beneficial interests in the
assets of the Trust, including the designation of the terms of the Common
Securities as set forth therein. The Issuer Trust will furnish a copy of the
Trust Agreement to the holder without charge upon written request to the Issuer
Trust at its principal place of business or registered office.

Upon receipt of this certificate, the Holder is bound by the Trust Agreement and
is entitled to the benefits thereunder.

Terms used but not defined herein have the meanings set forth in the Trust
Agreement.

IN WITNESS WHEREOF, one of the Administrative Trustees of the Issuer Trust has
executed this certificate this ___ day of _____________, 2002.

                                 CFB CAPITAL ___
                                 By:
                                    --------------------------------------
                                 Mark A. Anderson
                                 ADMINISTRATIVE TRUSTEE

                                       C-1
<Page>

                                                                       Exhibit D

                    AGREEMENT AS TO EXPENSES AND LIABILITIES

AGREEMENT dated as of _________________ __, 2002, between Community First
Bankshares, Inc., a Delaware corporation ("CFB"), and CFB Capital ___, a
Delaware business trust (the "Trust").

WHEREAS, the Trust intends to issue its Common Securities (the "Common
Securities") to, and receive ____% Junior Subordinated Debentures (the "Junior
Subordinated Debentures") from, CFB and to issue and sell ____% Cumulative
Capital Securities (the "Capital Securities") with such powers, preferences and
special rights and restrictions as are set forth in the Trust Agreement of the
Trust dated as of _________________ __, 2002, as the same may be amended from
time to time (the "Trust Agreement"); and

WHEREAS, CFB will directly or indirectly own all of the Common Securities of the
Trust and will issue the Junior Subordinated Debentures.

NOW, THEREFORE, in consideration of the purchase by each holder of the Capital
Securities, which purchase CFB hereby agrees shall benefit CFB and which
purchase CFB acknowledges will be made in reliance upon the execution and
delivery of this Agreement, CFB, including in its capacity as holder of the
Common Securities, and the Trust hereby agree as follows:

                                    ARTICLE I

SECTION 1.1. GUARANTEE BY CFB.

      Subject to the terms and conditions hereof, CFB, including in its capacity
as holder of the Common Securities, hereby irrevocably and unconditionally
guarantees to each person or entity to whom the Trust is now or hereafter
becomes indebted or liable (the "Beneficiaries") the full payment, when and as
due, of any and all Obligations (as hereinafter defined) to such Beneficiaries.
As used herein, "Obligations" means any costs, expenses or liabilities of the
Trust other than obligations of the Trust to pay to holders of any Capital
Securities or other similar interests in the Trust the amounts due such holders
pursuant to the terms of the Capital Securities or such other similar interests,
as the case may be. This Agreement is intended to be for the benefit of, and to
be enforceable by, all such Beneficiaries, whether or not such Beneficiaries
have received notice hereof.

SECTION 1.2. TERM OF AGREEMENT.

This Agreement shall terminate and be of no further force and effect upon the
later of (a) the date on which full payment has been made of all amounts payable
to all holders of all the Capital Securities (whether upon redemption,
liquidation, exchange or otherwise) and (b) the date on which there are no
Beneficiaries remaining; provided, however, that this Agreement shall continue
to be effective or shall be reinstated, as the case may be, if at any time any
holder of Capital Securities or any Beneficiary must restore payment of any sums
paid under the Capital Securities, under any Obligation, under the Capital
Securities Guarantee Agreement dated the date hereof by CFB and Wilmington Trust
Company as guaranty trustee or under this

                                       D-1
<Page>

Agreement, for any reason whatsoever. This Agreement is continuing, irrevocable,
unconditional and absolute.

SECTION 1.3. WAIVER OF NOTICE.

      CFB hereby waives notice of acceptance of this Agreement and of any
Obligation to which it applies or may apply, and CFB hereby waives presentment,
demand for payment, protest, notice of nonpayment, notice of dishonor, notice of
redemption and all other notices and demands.

SECTION 1.4. NO IMPAIRMENT.

      The obligations, covenants, agreements and duties of CFB under this
Agreement shall in no way be affected or impaired by reason of the happening
from time to time of any of the following:

      (a)    the extension of time for the payment by the Trust of all or any
portion of the Obligations or for the performance of any other obligation under,
arising out of, or in connection with, the Obligations;

      (b)    any failure, omission, delay or lack of diligence on the part of
the Beneficiaries to enforce, assert or exercise any right, privilege, power or
remedy conferred on the Beneficiaries with respect to the Obligations or any
action on the part of the Trust granting indulgence or extension of any kind; or

      (c)    the voluntary or involuntary liquidation, dissolution, sale of any
collateral, receivership, insolvency, bankruptcy, assignment for the benefit of
creditors, reorganization, arrangement, composition or readjustment of debt of,
or other similar proceedings affecting, the Trust or any of the assets of the
Trust.

      The Beneficiaries shall not be obligated to give notice to, or obtain the
consent of, CFB with respect to the happening of any of the foregoing.

SECTION 1.5. ENFORCEMENT.

A Beneficiary may enforce this Agreement directly against CFB, and CFB waives
any right or remedy to require that any action be brought against the Trust or
any other person or entity before proceeding against CFB.

                                       D-2
<Page>

                                   ARTICLE II

SECTION 2.1. BINDING EFFECT.

All guarantees and agreements contained in this Agreement shall bind the
successors, assigns, receivers, trustees and representatives of CFB and shall
inure to the benefit of the Beneficiaries.

SECTION 2.2. AMENDMENT.

So long as there remains any Beneficiary or any Capital Securities are
outstanding, this Agreement shall not be modified or amended in any manner
adverse to such Beneficiary or to the holders of the Capital Securities.

SECTION 2.3. NOTICES.

Any notice, request or other communication required or permitted to be given
hereunder shall be given in writing by delivering the same by facsimile
transmission (confirmed by mail), telex, or by registered or certified mail,
addressed as follows (and if so given, shall be deemed given when mailed or upon
receipt of an answer back, if sent by telex):

                            CFB Capital ___
                            c/o Wilmington Trust Company
                            Rodney Square North
                            1100 North Market Street
                            Wilmington, DE  19890-0001
                            Facsimile No.:  (302) 651-1576
                            Attention:  Corporate Trust Administration

                            CFB Community First Bankshares, Inc.
                            520 Main Avenue
                            Fargo, ND 58124-0001
                            Facsimile No.: (701) 235-6019
                            Attention:  Craig A. Weiss, Chief Financial Officer

SECTION 2.4. GOVERNING LAW.

This Agreement shall be governed by and construed and interpreted in accordance
with the laws of the State of Minnesota (without regard to conflict of laws
principles).

                                       D-3
<Page>

THIS AGREEMENT is executed as of the day and year first above written.

                                     COMMUNITY FIRST BANKSHARES, INC.

                                     By:
                                        ----------------------------------------
                                     Name: Craig A. Weiss
                                     Title: Chief Financial Officer

                                     CFB CAPITAL ___

                                     By:
                                        ----------------------------------------
                                     Name:  Mark A. Anderson
                                     Title:  Administrative Trustee

                                       D-4
<Page>

                                                                       Exhibit E

This Capital Security is a Global Certificate within the meaning of the Trust
Agreement hereinafter referred to and is registered in the name of The
Depository Trust Company (the "Depositary") or a nominee of the Depositary. This
Capital Security is exchangeable for Capital Securities registered in the name
of a person other than the Depositary or its nominee only in the limited
circumstances described in the Trust Agreement (as defined below) and no
transfer of this Capital Security (other than a transfer of this Capital
Security as a whole by the Depositary to a nominee of the Depositary or by a
nominee of the Depositary to the Depositary or another nominee of the
Depositary) may be registered except in limited circumstances.

Unless this Capital Security is presented by an authorized representative of The
Depository Trust Company, a New York corporation ("Depository Trust Company"),
to CFB Capital ___ or its agent for registration of transfer, exchange or
payment, and any Capital Security issued is registered in the name of Cede &
Co., or such other name as requested by an authorized representative of
Depository Trust Company (and any payment hereon is made to Cede & Co. or to
such other entity as is requested by an authorized representative of Depository
Trust Company), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE
BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede &
Co. has an interest herein.

Certificate Number                                  Number of Capital Securities
C-001                                                                  _________

CUSIP NO. _______________

                    Certificate Evidencing Capital Securities
                                       of
                                 CFB Capital ___

                       ____% Cumulative Capital Securities
                  (liquidation amount $25 per Capital Security)

CFB CAPITAL ___, a statutory business trust created under the laws of the State
of Delaware (the "Trust"), hereby certifies that Cede & Co. (the "Holder") is
the registered owner of ___________ _____________________ (_________) preferred
securities of the Trust representing undivided beneficial interests in the
assets of the Trust and designated the ____% Cumulative Capital Securities
(liquidation amount $25 per Capital Security) (the "Capital Securities"). The
Capital Securities are transferable on the books and records of the Trust, in
person or by a duly authorized attorney, upon surrender of this certificate duly
endorsed and in proper form for transfer as provided in Section 504 of the Trust
Agreement (as defined below). The designations, rights, privileges,
restrictions, preferences, and other terms and provisions of the Capital
Securities are set forth in, and this certificate and the Capital Securities
represented hereby are issued and shall in all respects be subject to the terms
and provisions of, the Amended and Restated Trust Agreement of the Trust dated
as of ________________ __, 2002, as the same

                                       E-1
<Page>

may be amended from time to time (the "Trust Agreement"), including the
designation of the terms of Capital Securities as set forth therein. The Holder
is entitled to the benefits of the Capital Securities Guarantee Agreement
entered into by Community First Bankshares, Inc., a Delaware corporation, and
Wilmington Trust Company, as guarantee trustee, dated as of ____________ __,
2002, as the same may be amended from time to time, (the "Guaranty"), to the
extent provided therein. The Trust will furnish a copy of the Trust Agreement
and the Guaranty to the Holder without charge upon written request to the Trust
at its principal place of business or registered office. Upon receipt of this
certificate, the Holder is bound by the Trust Agreement and is entitled to the
benefits thereunder.

IN WITNESS WHEREOF, one of the Administrative Trustees of the Trust has executed
this certificate this ___ day of _________________, 2002.

                                        CFB CAPITAL ___

                                        By___________________________
                                        Name:  Mark A. Anderson
                                        Title:  Administrative Trustee

                                       E-2

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