Document:

<PAGE>

                                                                    Exhibit 10.6

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Certain confidential terms have been omitted from this exhibit pursuant to a
request for confidential treatment of those terms filed with the Securities and
Exchange Commission. Such confidential portions have been filed with the
Securities and Exchange Commission and are denoted in this exhibit by an
asterisk (*).
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                                 NON-EXCLUSIVE
                            PATENT LICENSE AGREEMENT

     This Patent License Agreement ("Agreement") is effective as of the 30th day
of October, 2002 ("Effective Date"), by and between Storage Computer Corporation
("SCC"), a Delaware corporation having its principal place of business at 11
Riverside Street, Nashua, New Hampshire 03062, and EMC Benelux BV ("EMC") with
its principal office located at the Grand Duch of Luxembourg, 11, Rue de
Bitbourg, L-1273 Luxembourg.

     WHEREAS, SCC is the owner of certain patents and has the exclusive right to
grant licenses under these patents; and

     WHEREAS, EMC wishes to obtain a non-exclusive license under these patents.

     NOW, THEREFORE, in consideration of the promises and the faithful
performance of the mutual covenants contained herein, the Parties hereby agree
as follows:

1. Definitions.

     (a) "Affiliates" of a Party means any Person that directly, or indirectly
through one or more intermediaries, controls, is controlled by, or is under
common control with, that Party as of the Effective Date; provided that such
Persons shall be deemed an Affiliate only so long as such control exists.

     (b) "Covered Product(s)" means any and all products which are sold or
otherwise distributed by EMC, including without limitation, hardware or
software, or a combination thereof, or any service offering that is covered by
any claim in any of the SCC Patents; Covered Product(s) also includes the
products and offerings of an entity which is either an Affiliate, Parent or
Subsidiary of EMC.

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Patent License Agreement                                            Page 1 of 11

<PAGE>

     (c) "Law" means any federal, state, local, municipal, foreign,
international, multinational or other constitution, law, ordinance, principle of
common law, regulation, statute, treaty or administrative order.

     (d) "Party" means a party to this Agreement.

     (e) "Person" means an association, a corporation, an individual, a
partnership, a trust or any other entity or organization, including a
Governmental Entity.

     (f) "Parent" means, with respect to any party, a person (A) acting as
general partner of such party (excluding partnerships, the general partnership
interests of which held, directly or indirectly, by such person do not
constitute a majority of the voting interests in such partnership), (B) owning,
directly or indirectly, in excess of a majority of the outstanding equity or
voting securities or interests of such party or (C) holding, directly or
indirectly, the right to elect at least a majority of the board of directors or
others performing similar functions with respect to such party.

     (g) "SCC Patents" means: (A) the entire portfolio of patents throughout the
world that are issued, assigned to or owned by SCC or any of its Subsidiaries or
any of its Affiliates as of the Effective Date or thereafter, (B) any patent
applications assigned to or owned by SCC or any of its Subsidiaries or any of
its Affiliates that are on file with any governmental agency as of the Effective
Date or thereafter, as well as all reexaminations, reissues, continuations,
continuations-in-part, divisions, renewals and extensions of the foregoing and
any patents that may issue from the foregoing, and (C) all patents under which
SCC or any of its Subsidiaries or any of its Affiliates has as of the Effective
Date Date, or thereafter obtains, the right to grant licenses to EMC of or
within the scope granted herein without such grant or the exercise of rights
thereunder resulting in the payment of royalties or other consideration by SCC
or its Subsidiaries or its Affiliates to third parties (except for payments
among SCC and its Subsidiaries and Affiliates, and payments to third parties for
inventions made by said third parties while employed by SCC or any of its
Subsidiaries or any of its Affiliates). In the event that the ownership or
control of patents or patent applications is disputed by any Person or Party,
SCC Patents shall include the broadest scope of SCC's rights in such patents or
patent applications. SCC Patents include, but are not necessarily limited to,
the patents listed in SCHEDULE A, attached hereto.

     (h) "Subsidiary" means, with respect to any party, any corporation or other
organization, whether incorporated or unincorporated, of which (A) such party or
any other Subsidiary of such party is a general partner (excluding partnerships,
the general partnership interests of which held by such party or any Subsidiary
of such party do not have a majority of the voting interest in such
partnership), (B) such party or any Subsidiary of such party owns in excess of a
majority of the outstanding equity or voting securities or interests or (C) such
party or any Subsidiary of such party

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Patent License Agreement                                            Page 2 of 11

<PAGE>

has the right to elect at least a majority of the board of directors or others
performing similar functions with respect to such corporation or other
organization.

     (i) "EMC Licensed Products" shall mean any and all products which are sold
or otherwise distributed by EMC, its Parent (including, Subsidiaries and
Affiliates of the Parent), Subsidiaries or Affiliates, including without
limitation, Covered Product(s), hardware, software, service offering or a
combination thereof, that is covered by any claim in any of the SCC Patents.

2. License.

     (a) Subject to the terms and conditions of this Agreement, and for the
consideration stated in Section 3(a) of this Agreement, SCC on behalf of itself
and its Affiliates and Subsidiaries grants to EMC, its Affiliates and
Subsidiaries a fully paid-up, worldwide, non-exclusive, non-transferrable,
perpetual, license, without any field-of-use or any geographic limitations,
under the SCC Patents to:

          (i) to make, use (including the right to practice any method which is
involved in the use), import, offer for sale, lease, license, sell and/or
otherwise dispose of (either directly or indirectly) EMC Licensed Products;

          (ii) to have EMC Licensed Products made by another manufacturer for
the use, importation, offer for sale, lease, license, sale and/or other
disposition of (either directly or indirectly) by EMC;

          (iii) to make, have made, use and/or import any equipment for use in
the manufacture of EMC Licensed Products and to practice and have practiced
any method or process involved in the manufacture or use of EMC Licensed
Products to the extent such method or process is covered by one or more of SSC
Patents; and

          (iv) to provide or have provided services and ancillary repair and
replacement parts to end-users, including, without limitation, maintenance,
repair and integration services.

     (b) The licenses granted to EMC herein shall include the right to grant
sublicenses by EMC to its Parents, Subsidiaries and Affiliates existing on or
after the Effective Date, which sublicenses shall include the right of
sublicensed Parents, Subsidiaries and Affiliates to sublicense other
Subsidiaries. Such sublicense right shall include the right of EMC to grant to
its Parent, including the Parent's Subsidiaries and Affiliates, a fully paid-up,
worldwide, non-exclusive, non-transferable, perpetual, license, without any
field-of-use or any geographic limitations, under the

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PATENT LICENSE AGREEMENT                                            Page 3 of 11

<PAGE>

SCC Patents of the same scope as the license from SCC to EMC. For purposes of
this Section 2, the term "Parent" shall be deemed to include all Subsidiaries
and Affiliates of the Parent.

     (c) The grants of license and sublicense rights are subject to the
following limitations:

          (i) Except as expressly provided in this Agreement, no implied license
or right to sublicense is granted by this Agreement.

          (ii) In the event of a merger, the license to the merging party will
survive only as to licensed products and Covered Products sold by the licensee
at the time of the merger and to licensed products and Covered Products under
development by the licensee at the time of the merger that are introduced within
a two-year period after the merger.

          (iii) Except as provided for in Sections 2(c)(ii) and 4(b), any
license or sublicense, including the right to grant sublicenses, to a Parent,
Affiliate or Subsidiary will terminate on the date such Parent, Affiliate or
Subsidiary ceases to be a Parent, Affiliate or Subsidiary.

          (iv) Release. SSC and each of its Subsidiaries, Affiliates,
successors, assigns, officers, directors, employees, agents and attorneys (all
of the foregoing referred to as "Releasors"), for good and valuable
consideration the receipt and sufficiency of which is acknowledged, hereby
release, acquit and forever discharge EMC, and each of its Parents (including
the Parent's Subsidiaries, Affiliates, successors and assigns), Subsidiaries,
Affiliates, successors, assigns, officers, directors, employees and attorneys
(all of the foregoing being referred to as "Releasees") from any and all claims
or liability for infringement of SSC Patents (including, without limitation,
claims with respect to any method practiced in the manufacture or use of any EMC
Licensed Product), which claims are based on acts or arose prior to the
Effective Date. Releasors also irrevocably release, acquit and forever discharge
customers of Releasees, to the same extent, for such customers' use of EMC
Licensed Products. Releasors shall not initiate or maintain any action involving
any claim for patent infringement against Releasees with respect to SCC Patents
and Releasors hereby grant to the Releasees immunity from suit for patent
infringement of the SCC Patents.

3. Royalties.

     (a) For the rights and privileges granted under Section 2(a), Section 2(b)
and Section 2(c)(iv) of this Agreement, EMC shall pay to SCC a fee of Three
Million Dollars ($3,000,000.00).

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PATENT LICENSE AGREEMENT                                            Page 4 of 11

<PAGE>

     (b) The fee set forth in Section Section 3(a) above shall be paid to SCC in
United States currency within seven (7) business days of the Effective Date by a
wire transfer of funds to the following bank and account number of SCC:

         Bank:      *

         ABA:       *

         FBO:       *

         Account:   *

         FFC:       *

     (c) The payment due pursuant to this Agreement shall be made without the
deduction of taxes of any kind, and the parties acknowledge that EMC has no
obligation for any tax liability or tax reporting obligations of SCC with
respect to such payments. Any taxes, duties or custom fees on payments from EMC
to SCC, shall be the responsibility of SCC. To the extent such taxes, duties or
customs fees are required, the payment from EMC to SCC will be net of such
taxes, duties or customs fees.

     (d) The fee of Three Million Dollars ($3,000,000.00) is payable within
seven (7) business days of the Effective Date. Failure to make this payment
within seven (7) business days of the Effective Date shall constitute a material
breach of this Agreement in which event SCC may, in addition to other rights,
terminate this Agreement and the rights and licenses granted herein upon notice
to EMC.

4. Assignability

     (a) Except as provided for by Sections Section 2(c)(ii) and 4(b) of this
Agreement, the rights, licenses and obligations hereunder may not be assigned or
delegated by EMC without the express written consent of SCC, which consent shall
not be unnecessarily withheld. SCC shall not assign any of the SCC Patents nor
grant any right under any of the SCC Patents unless such assignment or grant is
made subject to the terms of this Agreement, including without limitation, the
terms of Section 2 of this Agreement. Any attempted assignment in derogation of
the foregoing shall be void.

     (b) This Agreement may be assigned by EMC only to a Parent, Subsidiary or
an Affiliate or to a third party in connection with the sale of substantially
all of EMC's business assets and

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PATENT LICENSE AGREEMENT                                            Page 5 of 11

<PAGE>

goodwill associated therewith, with written notice to SCC. Such assignment to a
Parent, Subsidiary or Affiliate shall remain effective even if said Subsidiary
or Affiliate, subsequent to said assignment, ceases to be a Parent, Subsidiary
or Affiliate. For purposes of this Section 4, the term "Parent" shall be deemed
to include all Subsidiaries and Affiliates of the Parent.

5. Representations; Warranties; Negations.

     (a) SCC represents and warrants that:

          (i) it is the assignee of the SCC Patents, that it has the full right
and authority to enter into this Agreement and to grant each of the releases,
rights, licenses and/or sublicenses that it has granted herein, and the
execution, delivery and performance of this Agreement have been authorized by
all necessary corporate action on its part; and

          (ii) as of the Effective Date, it, and its Affiliates and
Subsidiaries, will not have in effect any grant, and will not grant in the
future, any rights inconsistent or in conflict with the rights, licenses and
sublicenses granted or to be granted herein.

     (b) EMC represents and warrants that it has the full right and authority to
enter into this Agreement, and the execution, delivery and performance of this
Agreement have been authorized by all necessary corporate action on its part.

     (c) Nothing in this Agreement will be construed as:

          (i) A warranty or representation that any Covered Product will be free
from infringement of third party patents;

          (ii) A requirement that any Party shall file any patent application,
secure any patent or maintain any patent in force;

          (iii) An obligation to furnish any information concerning pending
patent applications;

          (iv) Conferring a right to use in advertising, publicity or otherwise
any trademark or trade name of any Covered Product;

          (v) Granting by implication, estoppel or otherwise, any licenses or
rights under any patents other than the rights, licenses and releases
enumerated in this Agreement; or

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PATENT LICENSE AGREEMENT                                            Page 6 of 11

<PAGE>

          (vi) An obligation to give notice regarding issuance or acquisition of
new patents, provided that SCC must respond to a written inquiry from EMC.

     (d) EXCEPT AS EXPRESSLY PROVIDED IN SUBSECTIONS 5(A) AND 5(A)(II), NEITHER
PARTY MAKES, AND EACH PARTY SPECIFICALLY DISCLAIMS, ANY AND ALL REPRESENTATIONS,
GUARANTEES OR WARRANTIES, WHETHER EXPRESS, IMPLIED, STATUTORY OR OTHERWISE,
INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT OF THIRD PARTY RIGHTS.

6. Notices.

     All notices arising under or otherwise relating to this Agreement shall be
in writing, delivered by hand or sent by certified U.S. mail, return receipt
requested, or by established overnight delivery service ("ODS") or by facsimile
transmission confirmed by one of the above means.

         All notices to EMC shall be given or made to:

                  EMC Corporation
                  171 South Street
                  Hopkinton, MA 01748

                  Attn: *

         All notices to SCC shall be given or made to:

                  Storage Computer Corporation
                  11 Riverside Street
                  Nashua, New Hampshire  03062-1373

                  Attn:  *

         A copy of all notices to SCC shall be sent to:

                  Sidley Austin Brown & Wood
                  717 North Harwood, Suite 3400
                  Dallas, Texas  75201
                  Attn:  *

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PATENT LICENSE AGREEMENT                                            Page 7 of 11

<PAGE>

Notices shall be effective upon receipt, except that notice sent by ODS shall be
effective on the next business day.

     Either Party may, by written notice to the other Party, specify a different
recipient, address or facsimile number to which notices shall be given, by
notice thereof to the other party in the foregoing manner.

7. TERM AND TERMINATION

          This Agreement is effective on the Effective Date, and the licenses
granted under this Agreement will be in full force and effect as of that date
and will continue until the last to expire of the SCC Patents. The licenses and
releases granted hereunder shall survive this Agreement's expiration or
termination.

8. CONFIDENTIALITY

          The Parties agree not to disclose the terms of this Agreement to any
third party (other than its Parents, Subsidiaries, Affiliates and Subsidiaries
and Affiliates of the Parent) without the prior written consent of the other
party. This obligation is subject to the following exceptions:

     (a) disclosure is permissible if required by government or court order,
provided the party required to disclose first gives the other prior written
notice to enable it to seek a protective order;

     (b) disclosure is permissible if otherwise required by law;

     (c) disclosure is permissible if required to enforce rights under this
Agreement; and

     (d) each party may disclose this Agreement or its contents to the extent
reasonably necessary, on a confidential basis, to its accountants, attorneys,
financial advisors, its present or future providers of venture capital and/or
potential investors in or acquirers of such party or the SCC Patents. Neither
party shall use or refer to this Agreement or any of its provisions in any
promotional activity.

9. MISCELLANEOUS

     (a) Amendments; Waivers.

          This Agreement shall be binding upon and shall inure to the benefit of
the Parties and their respective successors and assigns. This Agreement and any
exhibit or schedule attached hereto may be amended only by agreement in writing
of the Parties. No waiver of any provision nor consent to any exception to the
terms of this Agreement will be effective unless made in

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Patent License Agreement                                            Page 8 of 11

<PAGE>

writing and signed by the Party to be bound and then only to the specific
purpose, extent and instance so provided.

     (b) Governing Law.

     This Agreement, the legal relations between the Parties and any action,
whether contractual or non-contractual, instituted by any Party with respect to
matters arising under or growing out of or in connection with or in respect of
this Agreement, including, but not limited to, the negotiation, execution,
interpretation, coverage, scope, performance, breach, termination, validity, or
enforceability of this Agreement, shall be governed by and construed in
accordance with the patent laws of the United States, Title 35 U.S. Code, and
the laws of the State of New York without regard to conflicts of law doctrines.

     (c) Headings.

     The descriptive headings of the Articles, Sections and subsections of this
Agreement are for convenience only and do not constitute a part of this
Agreement.

     (d) Remedies; Waiver.

     To the extent permitted by Law, all rights and remedies existing under this
Agreement and any related agreements or documents are cumulative to and not
exclusive of, any rights or remedies otherwise available under applicable Law. A
Party's delay or failure to exercise any right under this Agreement must not be
deemed a waiver of that right, and a partial exercise of any right will not
preclude any further exercise of that or any other right.

     (e) Severability.

     If any provision of this Agreement is determined to be invalid, illegal or
unenforceable by any governmental entity, the remaining provisions of this
Agreement shall remain in full force and effect provided that the essential
terms and conditions of this Agreement for the Parties remain valid, binding and
enforceable.

     (f) Counterparts.

     This Agreement and its amendments may be executed in one or more
counterparts. The counterparts will constitute one and the same agreement and
will become effective when one or more counterparts have been signed by each
Party and delivered to the other Party.

     (g) No Agency.

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PATENT LICENSE AGREEMENT                                            Page 9 of 11

<PAGE>

     No agency relationship is involved or created with respect to this
Agreement.

     (h) Integration

     This Agreement constitutes the entire agreement between the Parties
relating to this subject matter, and supersedes all prior or contemporaneous
proposals, agreements, representations and other communications between them on
this subject.

AGREED, ACKNOWLEDGED AND ACCEPTED:

                                                    Storage Computer Corporation

Date:  November 5, 2002                             /s/ THEODORE J. GOODLANDER
       ----------------                             ----------------------------
                                                    Mr. Theodore J. Goodlander
                                                    President

                                                    EMC

Date: November 4, 2002                              /s/ PAUL T. DACIER
      ----------------                              ----------------------------
                                                    Paul T. Dacier
                                                    Senior Vice-President and
                                                    General Counsel

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PATENT LICENSE AGREEMENT                                           Page 10 of 11

<PAGE>

                                   SCHEDULE A
                                   ----------

                           SCC STORAGE SYSTEM PATENTS
                           --------------------------

US 6,098,128      Universal storage management system

US 5,893,919      Apparatus and method for storing data with selectable data
                  protection using mirroring and selectable parity inhibition

US 5,790,774      Data storage system with dedicated allocation of parity
                  storage and parity reads and writes only on operations
                  requiring parity information

US 5,732,238      Non-volatile cache for providing data integrity in operation
                  with a volatile demand paging cache in a data storage system

US 5,720,027      Redundant disc computer having targeted data broadcast

US 5,257,367      Data storage system with asynchronous host operating system
                  communication link

US 4,942,579      High-speed, high-capacity, fault-tolerant, error-correcting
                  storage system

KR 128343         Fault-Tolerant, error-correcting storage system and method for
                  storing digital information in such a storage system

EP 539 494        High-speed, high-capacity, fault-tolerant, error-correcting
                  storage system for binary computers

EP 294 287        Fault-Tolerant, error-correcting storage system and method for
                  storing digital information in such a storage system

DE 691 31 728     High-speed, high-capacity, fault-tolerant, error-correcting
                  storage system for binary computers

DE 3856443        Fault-Tolerant, error-correcting storage system and method for
                  storing digital information in such a storage system

CN 13713          Fault-tolerant, error-correcting storage system

CA 2,087,162      High-speed, high-capacity, fault-tolerant, error-correcting
                  storage system for binary computers

CA 1296103        High-speed, high-capacity, fault-tolerant, error-correcting
                  storage system

AU 663293         Storage system for binary computers

AU 605598         Fault-tolerant, error-correcting storage system

JP 3,180,130      Fault-Tolerant, error-correcting storage system and method for
                  storing digital information in such a storage system

JP 3,273,254      High-speed, high-capacity, fault-tolerant, error-correcting
                  storage system for binary computers

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PATENT LICENSE AGREEMENT                                           Page 11 of 11<PAGE>

                                                                   EXHIBIT 10.69

                          BASIC LEASE INFORMATION SHEET

   1.  Date of Lease                    March 23, 2000

   2.  Tenant:                          IDX SYSTEMS CORPORATION, a Vermont
                                        corporation

   3.  Tenant's Address                 1400 Shelburne Road Burlington, Vermont
       Prior to Occupancy:              05402-1070

   4.  Tenant's Address                 At the Premises with a copy to: 1400
       After Occupancy                  Shelburne Road Burlington, Vermont
                                        05402-1070

   5.  Landlord:                        NATIONAL OFFICE PARTNERS LIMITED
                                        PARTNERSHIP, a Delaware limited
                                        partnership

   6.  Landlord's                       c/o Hines 10900 N.E. 4th Street, Suite
       Address:                         920, Bellevue, WA 98004

   7.  Premises:                        Those portions of Floors 3 through 18
                                        (inclusive) as shown on Exhibit A

   8.  Net Rentable                     Three Hundred Twenty-four Thousand
       Area/Tenant's                    Thirty-six (324,036) square feet of Net
       Proportionate                    Rentable Area/Two Hundred Eighty-six
       Share:                           Thousand Eight Hundred Twenty-eight
                                        (286,828) square feet of Useable Area,
                                        as adjusted pursuant to Section l.l(d).
                                        Tenant's Proportionate Share:
                                        Thirty-nine and 66/100 percent
                                        (39.66%), as to the Minimum
                                        Initial Premises, as adjusted
                                        pursuant to Section 4.3.

   9.  Scheduled                        April 1, 2003
       Commencement Date:

   10. Term:                            Initial Term: Twelve (12) Years and zero
                                        (0) Months Extension Terms: Two (2)
                                        successive options for Six (6) Years
                                        each

   11. Base Rent:                       See Page B attached hereto

   12. Security Deposit:                N/A

   13. Parking:                         1.00 pass per one thousand five hundred
                                        (1,500) square feet of Useable Area,
                                        subject to adjustment pursuant to
                                        Section 14.22.

   14. Tenant's Working                 No later than January 1, 2002
       Drawings Delivery Date:

   15. Cash Allowance:                  $32.00 per square foot of Useable Area
                                        in the Premises, to be allocated as
                                        provided in Exhibit C

   16. Broker(s):                       Landlord's Broker: Colliers
                                        International

/s/ JAK, 3/27/00                                      /s/ [ILLEGIBLE] 4/6/00
------------------------                              --------------------------
Tenant's Initials/Date                                Landlord's Initials/Date

                                        A

<PAGE>

            Tenant's Broker: Cushman & Wakefield of Washington, Inc.

BASE RENT SCHEDULE (Item 11 on Basic Lease Information Sheet)

                   Minimum Annual Base Rent Per Square Foot of Net Rentable
                   Area for:

                  MINIMUM
                  INITIAL
                PREMISES AND         EXPANSION
 LEASE YEARS*    HOLD SPACE            SPACE
-----------------------------------------------------
     1-3        $      23.50         $   24.50
     4-6        $      26.00         $   27.00
     7-9        $      28.50         $   29.50
     10-12      $      31.00         $   32.00

*    As defined in Section 2.1(b) below.

JAK, 3/27/00                                            /s/ [ILLEGIBLE] 4/6/00
------------------------                                -----------------------
Tenant's Initials/Date                                  Landlord's Initials/Date

                                        B

<PAGE>

                                TABLE OF CONTENTS

                                                                            PAGE
                                                                            ----
Basic Lease Information Sheet

ARTICLE 1 Premises.............................................................1

   1.1    Lease................................................................1
   1.2    Landlord's Reserved Rights...........................................3
   1.3    Common Areas.........................................................4
   1.4    Calculation of Net Rentable Area; Useable Area.......................5

ARTICLE 2 Term, Use of Premises and Base Rent..................................5

   2.1    Term.................................................................5
   2.2    Delay in Delivery....................................................6
   2.3    Confirmation.........................................................8
   2.4    Uses.................................................................8
   2.5    Payments by Tenant...................................................8
   2.6    Payment of Base Rent.................................................9
   2.7    Partial Months......................................................11
   2.8    Early Commitment Rent Credit Incentive..............................11

ARTICLE 3 Security Deposit....................................................12

ARTICLE 4 Payment of Operating Costs..........................................12

   4.1    Net Lease...........................................................12
   4.2    Estimated Payments..................................................12
   4.3    Tenant's Proportionate Share........................................12
   4.4    Operating Costs.....................................................12
   4.5    Adjustment for Occupancy............................................15
   4.6    Computation of Operating Costs Adjustment...........................15
   4.7    Adjustment for Variation Between Estimated and Actual...............15
   4.8    Tenant's Audit Right................................................15

ARTICLE 5 Landlord's Covenants................................................17

   5.1    Basic Services......................................................17
   5.2    Hours of Operation..................................................18
   5.3    Interruption........................................................19
   5.4    Extra Services......................................................19
   5.5    Window Coverings....................................................20
   5.6    Graphics and Signage................................................20
   5.7    Tenant Extra Improvements...........................................21
   5.8    Peaceful Enjoyment..................................................22
   5.9    Tenant Improvements in Hold and Expansion Spaces....................22

ARTICLE 6 Tenant's Covenants..................................................22

   6.1    Compliance With Exhibit C...........................................22
   6.2    Construction of Tenant Improvements.................................22
   6.3    Telecommunications..................................................23
   6.4    Taxes on Personal Property and Tenant Extra Improvements............24
   6.5    Repairs by Tenant...................................................24
   6.6    Waste...............................................................24

                                        i

<PAGE>

   6.7    Alterations, Additions, Improvements................................24
   6.8    Liens...............................................................25
   6.9    Compliance With Laws and Insurance Standards........................26
   6.10   Entry for Repairs, Inspection, Posting Notices, Etc.................26
   6.11   No Nuisance.........................................................27
   6.12   Rules and Regulations...............................................27
   6.13   Surrender of Premises On Termination................................27
   6.14   Corporate Authority.................................................28
   6.15   Utilities...........................................................28

ARTICLE 7 Hazardous Materials.................................................28

   7.1    Prohibition and Indemnity With Respect to Hazardous Materials.......28
   7.2    Definitions.........................................................29
   7.3    Landlord's Representations and Undertakings.........................29

ARTICLE 8 Assignment or Sublease..............................................30

   8.1    Consent Required....................................................30
   8.2    Transfers to Qualified Transferees, Joint Ventures..................30
   8.3    Landlord's Options..................................................31
   8.4    Minimum Rental; Division of Excess Rent.............................32
   8.5    Tenant Not Released.................................................32
   8.6    Written Agreement...................................................32
   8.7    No Transfer Period..................................................32
   8.8    Conditions..........................................................32
   8.9    Expenses............................................................32
   8.10   No Restriction on Landlord..........................................33
   8.11   No Leasehold Financing..............................................33

ARTICLE 9 Condition and Operation of the Building.............................33

   9.1    Limited Warranties..................................................33
   9.2    Building Alterations................................................33

ARTICLE 10 Lender Rights......................................................34

   10.1   Subordination.......................................................34
   10.2   Attornment..........................................................34
   10.3   REAs................................................................35
   10.4   Estoppel Certificate................................................35
   10.5   Failure to Deliver..................................................36

ARTICLE 11 Insurance..........................................................36

   11.1   Landlord's Casualty Insurance.......................................36
   11.2   Liability Insurance.................................................36
   11.3   Tenant's Additional Insurance.......................................36
   11.4   Indemnity and Exoneration...........................................37
   11.5   Indemnity for Liens.................................................38
   11.6   Waiver of Subrogation Rights........................................38

ARTICLE 12 Casualty and Eminent Domain........................................38

   12.1   Damage and Destruction..............................................38
   12.2   Condemnation........................................................40

                                       ii

<PAGE>

ARTICLE 13 Default............................................................40

   13.1   Events of Default...................................................40
   13.2   Remedies Upon Default...............................................41
   13.3   Damages Upon Termination............................................42
   13.4   Computation of Rent for Purposes of Default.........................42
   13.5   Late Charge.........................................................43
   13.6   Remedies Cumulative.................................................43
   13.7   Tenant's Remedies...................................................43
   13.8   Limitation on Consequential Damages.................................44

ARTICLE 14 Miscellaneous......................................................44

   14.1   No Waiver...........................................................44
   14.2   Holding Over........................................................45
   14.3   Attorneys' Fees.....................................................46
   14.4   Amendments..........................................................46
   14.5   Transfers by Landlord...............................................46
   14.6   Severability........................................................47
   14.7   Notices.............................................................47
   14.8   Landlord Relocation Right...........................................47
   14.9   No Option...........................................................47
   14.10  Integration and Interpretation......................................47
   14.11  Quitclaim...........................................................48
   14.12  No Easement for Light, Air and View.................................48
   14.13  No Merger...........................................................48
   14.14  Memorandum of Lease.................................................48
   14.15  Survival............................................................48
   14.16  Financial Statements................................................48
   14.17  No Joint Venture....................................................49
   14.18  Successors and Assigns..............................................49
   14.19  Applicable Law......................................................49
   14.20  Time of the Essence; Force Majeure..................................49
   14.21  Interpretation......................................................49
   14.22  Parking.............................................................50
   14.23  Brokers.............................................................51
   14.24  Arbitration of Certain Disputes.....................................51
   14.25  Building Development................................................52
   14.26  Roof Access.........................................................53
   14.27  Conference Center...................................................53
   14.28  Tenant's Generator; Emergency Cooling...............................53
   14.29  Tax Deferral........................................................54
   14.30  Storage Space.......................................................55
   14.31  Move-In.............................................................55

                                       iii

<PAGE>

Attachments:

Exhibit A        Stacking Plan of the Premises
Exhibit B        Legal Description of the Real Property
Exhibit C        Initial Improvement of the Premises
Schedule C-1     Base Building Improvements
Schedule C-2     Definition of Building Standard Improvements
Exhibit D        Rules and Regulations
Exhibit E        Lease Commencement Certificate
Exhibit F-l      Conceptual Signage Plan
Exhibit F-2      Major Tenant Sign
Exhibit G        Form of Estoppel Certificate
Exhibit H        Janitorial Specifications

                                       iv

<PAGE>

                            SCHEDULE OF DEFINED TERMS

                                        SECTION NO.                     PAGE NO.
                                        ---------------                ---------

Adjustment Date.........................Section 2.6(b).........................9
Alterations.............................Section 6.7...........................24
Antenna.................................Section 14.26.........................53
Availability Notice.....................Section l.l(e).........................3
Base Rent Credit........................Section 2.8(a)........................12
Basic Services..........................Section 5.1...........................17
Building Components.....................Section 1.2............................4
Building Schematic Design Plans.........Section l.l(a).........................1
Building................................Section 1.1(a).........................1
Business Days...........................Section 5.2...........................19
Claims..................................Section 7.1...........................28
Common Areas............................Section 1.3............................4
Confirmed Occupancy Date................Section 1.1............................2
Continuing Defaults.....................Section 10.2..........................34
Cost Statement..........................Section 4.6...........................15
Estimated Operating Costs...............Section 4.2...........................12
Event of Default........................Section 13.1..........................40
Excluded Items..........................Section 4.8(f)........................16
Expansion Space.........................Section l.l(b).........................2
Expansion Term Adjustment Date..........Section 2.6(b).........................9
Expiration Date.........................Section 2.1(a).........................5
Extended Hours..........................Section 5.2...........................19
Extension Option........................Section 2.1(b).........................6
Extension Terms.........................Section 2.1(b).........................6
Extra Services..........................Section 5.4...........................19
Fair Market Rent........................Section 2.6(b).........................9
Force Majeure...........................Section 14.20.........................49
Garage.:................................Section 14.22.........................50
Guarantor...............................Section 13.1(d).......................41
Hazardous Material......................Section 7.2(a)........................29
Hazardous Materials Claims..............Section 7.2(b)........................29
Hazardous Materials Laws................Section 7.2(c)........................29
Holdover Option.........................Section 14.2..........................45
Initial Holdover Notice.................Section 14.2..........................45
Initial Lease...........................Section l.l(e).........................3
Initial Premises........................Section l.l(a).........................1
Initial Term............................Section 2.1(a).........................5
Landlord................................Introduction...........................1
Landlord Parties........................Section 6.5...........................24
Laws....................................Section 6.9(a)........................26
Lease...................................Introduction...........................1
Lease Year..............................Section 2.1(a).........................6
Major Tenant Sign.......................Section 5.6(b)........................21
Major Vertical Penetrations.............Section 1.2............................4
Market Area.............................Section 2.6(b).........................9

                                        v

<PAGE>

Minimum Initial Premises................Section 2.2(b).........................7
Net Rentable Area.......................Section 1.4............................5
Normal Office Hours.....................Section 5.2...........................19
Offer Space Adjustment Date.............Section 2.6(b).........................9
Offer Space.............................Section l.l(e).........................3
Operating Costs Adjustment..............Section 4.6...........................15
Operating Costs.........................Section 4.4.......................12, 14
Parking Passes..........................Section 14.22.........................50
Permitted Hazardous Materials...........Section 7.2(d)........................29
Permitted Holdover Term.................Section 14.2..........................45
Permitted Use...........................Section 2.4............................8
Personal Right..........................Section 2.1(b).........................6
Premises................................Section l.l(a).........................1
Provider................................Section 6.3...........................23
Qualified Auditor.......................Section 4.8(d)........................16
Qualified Joint Venture.................Section 8.2...........................31
Qualified Transferee....................Section 8.2...........................30
Real Property...........................Section l.l(a).........................1
Real Property Taxes.....................Section 4.4(j)........................14
REAs....................................Section 10.3..........................35
Rent....................................Section 2.5............................8
Second Holdover Notice..................Section 14.2..........................45
Senior Instruments......................Section 10.1..........................34
Senior Parties..........................Section 10.1..........................34
SNDA....................................Section 10.1..........................34
Storage Rent............................Section 14.30.........................55
Storage Space...........................Section 14.30.........................55
Successor...............................Section 10.2..........................34
Tax Credit..............................Section 14.29(a)......................54
Tenant Extra Improvements...............Section 5.7...........................21
Tenant Improvements.....................Section 5.7...........................22
Tenant..................................Introduction...........................1
Tenant Parties..........................Section 6.5...........................24
Tenant's Generator......................Section 14.28.........................53
Tenant's Personal Property..............Section 11.1..........................36
Tenant's Proportionate Share............Section 4.3...........................12
Term Commencement Date..................Section 2.1(a).........................5
Term....................................Section 2.1(a).........................6
Transfer Date...........................Section 10.2..........................34
Transfer................................Section 8.1...........................30
Transferee..............................Section 8.1...........................30
Useable Area............................Section 1.4(c).........................5

                                       ii

<PAGE>

                              OFFICE BUILDING LEASE

        This Office Building Lease (the "Lease") is made and entered into as of
the date specified in Item 1 of the Basic Lease Information Sheet attached
hereto and incorporated herein by this reference, by and between NATIONAL OFFICE
PARTNERS LIMITED PARTNERSHIP, a Delaware limited partnership ("Landlord"), and
IDX SYSTEMS CORPORATION, a Vermont corporation ("Tenant").

        Now, therefore, in consideration of the mutual covenants and agreements
contained in this Lease, the parties agree as follows:

                                    ARTICLE 1
                                    PREMISES

        1.1     Lease.

                (a)     Initial Premises. Subject to the terms, covenants and
conditions set forth herein, Landlord leases to Tenant and Tenant leases from
Landlord those certain premises identified in the Basic Lease Information Sheet
as Item 7, which are schematically depicted on the preliminary floor plans and
stacking diagram attached hereto as Exhibit A (the "Initial Premises"). The
Initial Premises are estimated to contain Three Hundred Twenty-four Thousand
Thirty-six (324,036) square feet of Net Rentable Area (or Two Hundred Eighty-six
Thousand Eight Hundred Twenty-eight (286,828) square feet of Useable Area). The
term "Premises" as used herein shall mean the Initial Premises and any Offer
Space added to the Premises pursuant to Section 1.1(e) below. The Premises are a
part of the building and other improvements, including common areas
(collectively, the "Building"), located on the real property situated in the
City of Seattle, County of King, State of Washington, legally described on
Exhibit B (as such real property may be added to or reduced by Landlord from
time to time, the "Real Property"). The precise location of and floor plans for
the Premises shall be modified to reflect any revisions to the Building design
after the date hereof; provided that the Initial Premises shall mean all
occupiable space, other than retail space and Common Area, beginning on the
third (3rd) floor of the Building (excluding any retail space on the fourth
(4th) floor) and continuing in contiguous, whole floors to and including the
eighteenth (18th) floor of the Building, and containing approximately Three
Hundred Twenty-four Thousand Thirty-six (324,036) square feet of Net Rentable
Area. The parties acknowledge that the Building, as currently designed, will not
have a fifth (5th) or thirteenth (13th) floor. The final floor plans and the
calculation of Net Rentable Area and Useable Area shall be determined by
Landlord's architect upon completion of the working drawings for the Building
(subject to remeasurement as provided in Section 1.1(d) below), any adjustments
to Base Rent, parking allocation or Tenant's Proportionate Share shall be made
at that time and an amendment to this Lease shall be executed by Landlord and
Tenant to confirm the correct numbers and the floor plans to attach hereto as
Exhibit A. Notwithstanding the foregoing, Landlord agrees not to make any
revisions from the Building Schematic Design Plans (including revisions to
Building finishes), which are likely to have a material adverse effect on the
access or visibility of Tenant's main entrance on the fourth (4th) floor of the
Building from the fourth (4th) floor lobby, without Tenant's prior written
consent, which shall not be unreasonably withheld, delayed or conditioned. As
used herein, the term "Building Schematic Design Plans" means and refers to
those certain schematic design plans for the Building prepared by Kendall Heaton
Associates, dated as of September 17, 1999, copies of which have been delivered
to Tenant, as updated by the plan set delivered to Tenant March 3, 2000, as they
may be supplemented by Landlord.

                (b)     Occupancy Schedule. Tenant shall lease the entire
Minimum Initial Premises on the Term Commencement Date. Tenant shall occupy and
pay Rent on the Minimum Initial Premises, the Hold Space and the Expansion Space
according to the schedule set forth in this Section 1.1(b). The

<PAGE>

term "Expansion Space" shall mean and include the First Expansion Space, the
Second Expansion Space and the Third Expansion Space.

<TABLE>
<CAPTION>
                                        ESTIMATED NET  ESTIMATED
                                        RENTABLE       USEABLE
 PORTION OF PREMISES         FLOORS     SQUARE FEET    AREA        TARGET OCCUPANCY DATE
----------------------------------------------------------------------------------------
 <S>                          <C>        <C>            <C>         <C>
 Minimum Initial Premises    3-11       182,970        162,286     April 1, 2003*

 Hold Space                  12          23,511         20,757     January 1, 2004

 First Expansion Space       14          23,511         20,757     January 1, 2005

 Second Expansion Space      15-16       47,022         41,514     January 1, 2006

 Third Expansion Space       17-18       47,022         41,514     January 1, 2007
</TABLE>

* subject to acceleration to as early as January 1, 2003 at Landlord's election
(See Section 2.1(a)).

Landlord shall deliver the Hold Space and the First, Second and Third increments
of Expansion Space to Tenant, in the condition described in Section 5.9, within
three (3) months before or after the applicable Target Occupancy Date. Rent
shall commence on each increment of such Hold or Expansion Space on the earlier
of (i) the date on which Tenant takes possession, or (ii) the date specified by
Landlord in a notice to Tenant as the date on which the space will be ready for
occupancy based on Landlord's Work (the "Confirmed Occupancy Date" ); provided
that: (A) Landlord has given Tenant at least sixty (60) days notice of the
Confirmed Occupancy Date; (B) Landlord has given Tenant reasonable access to
such space for at least thirty (30) days for purposes of completing Tenant's
Work (which access may be simultaneous with completion of Landlord's Work,
nonexclusive and subject to any limitations or restrictions imposed by the City
of Seattle); and (C) as of the Confirmed Occupancy Date, the space is in the
condition required under Section 5.9. Until the Confirmed Occupancy Date for
each portion of the Initial Premises, Landlord shall have the right to use such
space in any manner that Landlord chooses, including without limitation leasing
the space to other parties. Landlord shall not lease any of the Expansion Space
on terms that conflict with Tenant's rights thereto and Landlord shall use good
faith efforts to obtain possession of the space on or before the Confirmed
Occupancy Date but shall not be liable to Tenant for any delay attributable to a
prior tenant's holdover.

                (c)     Hold Space. Tenant shall have the option to include the
Hold Space in the Minimum Initial Premises or to delay possession of the Hold
Space until the applicable Confirmed Occupancy Date, provided that Tenant must
notify Landlord by no later than April 1, 2002, if Tenant intends to delay
occupancy. If Tenant fails to provide such notice in a timely manner then the
Hold Space shall be included in the Minimum Initial Premises.

                (d)     Area Measurements. Within ninety (90) days after
issuance of the final permits for construction of the Building, the area of the
Building and Premises shall be measured by Landlord's architect in accordance
with the standards set forth in Section 1.4. Such measurements (the
"Measurements") shall be delivered to Tenant for review by Tenant's Architect
and shall be stipulated for the purposes of this Lease (subject to potential
remeasurement as provided below). Within thirty (30) days after
 Substantial Completion, either Tenant or Landlord may, at its sole cost, hire
Landlord's architect to physically measure the as-built Premises for consistency
with the Measurements. If either party chooses to exercise this right to
re-measure, it shall deliver to the other party full documentation of the
results of such re-measurement, and the other party shall have the right to
confirm or contest the accuracy of such re-measurement. If and only if the
re-measurement shows a discrepancy of one percent (1%) (greater than or less
than) the Measurements, the size of the Premises shall be adjusted accordingly.
To be valid, the re-measurement must be completed in accordance with the
standards set forth in Section 1.4. If one party contests the accuracy of the
re-measurement, both parties shall meet to resolve

                                        2

<PAGE>

the disagreement. If the parties cannot resolve the dispute within thirty (30)
days of receipt of the re-measurement, it shall be resolved through arbitration
in accordance with Section 14.24(b). In the event that the re-measurement does
not show a discrepancy of one percent (1%) (greater than or less than) the
Measurements, the party initiating the re-measurement shall pay all costs
associated with the re-measurement, including the costs of the other party to
contest or confirm the re-measurement.

                (e)     Right of First Offer. Subject to the terms and
conditions of this Section 1.1(e), Tenant shall have the right of first offer to
include within the Premises any space which becomes available on Floors 19
through 39 of the Building (the "Offer Space"). Tenant may not exercise its
right to lease any Offer Space during any period when Tenant is in default under
this Lease (which shall mean that no Event of Default has occurred and has not
been cured during the applicable cure period, if any, unless otherwise waived in
writing by Landlord). If less than two (2) years remain in the Lease Term,
Tenant must exercise an Extension Option under Section 2.1(b) in order to lease
any Offer Space and if no Extension Option remains to be exercised Tenant's
rights under this Section l.l(e) shall terminate. For purposes of this Section
l.l(e), the phrase "any space which becomes available" shall mean any space on
Floors 19 through 39 of the Building which is vacant or is scheduled to be
vacated within six (6) months but no space shall be considered Offer Space until
it has been previously leased to another tenant under a written lease agreement
(an "Initial Lease"). Landlord shall not offer to lease nor lease any Offer
Space to a party other than Tenant without first providing Tenant with written
notice that the Offer Space is available to lease or will be available to lease
within the next six (6) months ("Availability Notice"). The Availability Notice
shall include Landlord's proposed Fair Market Rent for the Offer Space in
accordance with Section 2.6(b)(iv), but should Tenant not accept such proposal
then Landlord may provide a different proposed Fair Market Rent for purposes of
any arbitration under Section 2.6(b)(v) and Landlord's original proposal shall
not be binding upon Landlord nor admissible by Tenant in any such arbitration.
Tenant shall have ten (10) Business Days after receipt of an Availability Notice
to notify Landlord in writing that it will lease all of the Offer Space subject
to such Availability Notice and whether Tenant accepts Landlord's proposed Fair
Market Rent. If Tenant does not exercise its option with respect to the Offer
Space described in an Availability Notice then Landlord may lease the space
identified therein to a third party on any terms that Landlord may deem
acceptable. Any Offer Space leased by Tenant under this Section l.l(e) shall be
leased under all of the terms and conditions of this Lease including expiration
date, renewal options and services except that: (i) Landlord shall deliver the
space to Tenant as previously improved with clean paint and carpet but Landlord
shall have no obligation to install any Tenant Improvements in the space or to
contribute any money towards any alteration or improvement thereof; and (ii)
Base Rent shall be the Fair Market Rent proposed in the Availability Notice, if
accepted by Tenant, or as otherwise determined under Section 2.6(b) below.
Tenant's right to lease the Offer Space is a Personal Right and is subject and
subordinate to any: (A) renewal rights or expansion options granted under any
Initial Leases and any other subsequent leases covering space on Floors 19
through 32; and (b) renewal rights, expansion options or rights of first offer
granted under any Initial Leases covering space on Floors 33 through 39. With
respect to Offer Space available on Floors 19 and 20, this right of first offer
shall be a continuing right, and such Offer Space shall be offered to Tenant as
provided herein from time to time as such Offer Space becomes available. With
respect to Offer Space available on Floors 21 through 39, this right of first
offer shall be a one-time right only, and if Tenant does not exercise its right
with respect to Offer Space described in an Availability Notice for any such
space, such space described in the Availability Notice shall no longer be
considered Offer Space.

        1.2     Landlord's Reserved Rights. In addition to all other rights
reserved by Landlord under this Lease, Landlord reserves from the leasehold
estate hereunder, and the Premises shall not include, (a) the exterior surfaces
of the walls and windows bounding the Premises, and (b) all space located within
the Premises for Major Vertical Penetrations (as defined below), conduits,
electric and all other utilities, heating ventilation and air-conditioning and
fire protection and life safety systems, sinks or other Building facilities that
do not constitute Tenant Improvements (collectively, "Building Components").
Landlord

                                        3

<PAGE>

shall have the use of the Building Components and access through the Premises
for operation, maintenance, repair or replacement thereof. Landlord shall have
the right from time to time, to install, remove or relocate any of the Building
Components within the Premises to locations that do not permanently and
materially reduce the square footage of the Premises, unreasonably interfere
with Tenant's permitted use of the Premises or otherwise violate the provisions
of Section 1.1(a) regarding access to and visibility of Tenant's main fourth
(4th) floor entrance from the fourth (4th) floor lobby. As used herein, the term
"Major Vertical Penetrations" shall mean the area or areas within Building
stairs (excluding the landing at each floor), elevator shafts, and vertical
ducts that service more than one floor of the Building. The area of Major
Vertical Penetrations shall be bounded and defined by the dominant interior
surface of the perimeter walls thereof (or the extended plane of such walls over
areas that are not enclosed). Major Vertical Penetrations shall exclude,
however, areas for the specific use of Tenant or installed at the request of
Tenant, such as special stairs or elevators.

        1.3     Common Areas. Tenant shall have the nonexclusive right (in
common with other tenants or occupants of the Building, Landlord and all others
to whom Landlord has granted or may hereafter grant such rights) to use the
Common Areas, subject to such reasonable rules and regulations as Landlord may
from time to time impose (and Landlord agrees not to intentionally enforce such
rules and regulations in a nonuniform manner). Landlord may at any time close
temporarily any Common Areas to make repairs or changes therein or to effect
construction, repairs, or changes within the Building, or to prevent the
acquisition of public rights in such areas, or to discourage parking by parties
other than tenants, and may do such other acts in and to the Common Areas as in
its judgment may be desirable, provided that any such closure shall not prevent
Tenant from reasonable access to and use of the Premises at all times other than
emergencies. Landlord may from time to time permit portions of the Common Areas
to be used exclusively by specified tenants. Landlord may also, from time to
time, place or permit customer service and information booths, kiosks, stalls,
push carts and other merchandising facilities in the Common Areas, provided they
do not materially, adversely affect access to or visibility of Tenant's main
fourth (4th) floor entrance from the fourth (4th) floor lobby. "Common Areas"
shall mean any of the following or similar items to the extent included in the
Building (a) the total square footage of areas of the Building devoted to
nonexclusive uses such as ground floor lobbies, seating areas and elevator
foyers; fire vestibules; mechanical areas; restrooms and corridors on all
floors; elevator foyers and lobbies on multi-tenant floors; electrical and
janitorial closets; telephone and equipment rooms; and other similar facilities
maintained for the benefit of Building tenants and invitees, but shall not mean
Major Vertical Penetrations; and (b) all parking garage vestibules; restrooms;
loading docks; locker rooms, exercise and conference facilities available for
use by Building tenants (if any); walkways, roadways and sidewalks; trash areas;
mechanical areas; landscaped areas including courtyards, plazas and patios; and
other similar facilities maintained for the benefit of Building tenants and
invitees. However, restrooms and corridors on floors for which Tenant is the
sole occupant (which shall constitute Common Areas for all other purposes of
this Lease) shall not be available for use by parties other than Tenant and
Tenant Parties, except to the extent required by applicable codes and
regulations. Tenant shall have the right to use, on a nonexclusive basis, the
Building stairways and landings within the Premises, provided such use shall at
all times be in compliance with applicable codes and regulations (including,
without limitation, fire and life safety regulations) and Tenant shall be solely
responsible for maintaining and monitoring security therein (including
installation, maintenance, repair and monitoring of any security systems or
devices desired by Tenant).

        1.4     Calculation of Net Rentable Area; Useable Area. Tenant
acknowledges that the term "Net Rentable Area" as used in this Lease shall mean
the area or areas of space within the Building determined by Landlord in
accordance with a modified BOMA standard as described below.

                (a)     Net Rentable Area on a single tenancy floor shall be
determined by measuring from the inside surface of the outer pane of glass and
extensions of the plane thereof in non-glass areas to the inside surface of the
opposite outer pane of glass and extensions of the plane thereof in non-glass

                                        4

<PAGE>

areas and shall include all areas within the envelope created by extending the
dominant plane of the outside walls of the Building, excluding Major Vertical
Penetrations, plus Tenant's pro rata share of Common Areas. Landlord shall
determine Tenant's pro rata share of Common Areas using any commercially
reasonable allocation formula selected by Landlord and consistently applied
throughout the Building. No deductions from Net Rentable Area shall be made for
columns or projections necessary to the Building except for Major Vertical
Penetrations.

                (b)     Net Rentable Area for a multi-tenant floor shall include
all space within the demising walls (measured from the mid-point of the demising
walls and, in the case of exterior walls, measured as defined in (a) above),
plus Tenant's pro rata share of Common Areas. Landlord shall determine Tenant's
pro rata share of Common Areas using any commercially reasonable allocation
formula selected by Landlord and consistently applied throughout the Building.
No deductions from Net Rentable Area shall be made for columns or projections
necessary to the Building except for Major Vertical Penetrations. Building
loading docks shall not be considered for purposes of determining Net Rentable
Area.

                (c)     Tenant acknowledges that the term "Useable Area" means
the Net Rentable Area less the Common Areas included in the calculation thereof.

                                    ARTICLE 2
                       TERM, USE OF PREMISES AND BASE RENT

        2.1     Term

                (a)     Initial Term. Except as otherwise provided herein, the
term "Term Commencement Date" shall mean the later of (i) the date of
Substantial Completion (as defined in Exhibit C to this Lease) of the Minimum
Initial Premises, or (ii) the Scheduled Commencement Date, as stated in the
Basic Lease Information Sheet as Item 9; provided, however, that Landlord may
advance or extend the Scheduled Commencement Date by no more than three (3)
months on thirty (30) days prior written notice to Tenant, and provided further,
that the Term Commencement Date shall not occur until Tenant has been provided:
(A) reasonable access to the Minimum Initial Premises for at least thirty (30)
consecutive days for purposes of completing Tenant's Work as provided in Section
10(e) of Exhibit C (which access may be simultaneous with completion of
Landlord's Work and not exclusive access and which shall be subject in all
respects to any limitations or restrictions imposed by the City of Seattle); and
(B) exclusive access to the Computer Room and Communications Rooms for at least
forty-five (45) days following completion of Landlord's Work with respect to the
Computer Room and Communications Rooms (which shall be subject in all respects
to any limitations or restrictions imposed by the City of Seattle), all as
defined and described in Paragraph 10(e) on Exhibit C. The "Initial Term" of
this Lease shall mean the number of years and/or months set forth in the Basic
Lease Information Sheet as Item 10, commencing on the first day of the calendar
month following the Term Commencement Date (or on the Term Commencement Date if
it is the first day of a calendar month) through and including the Expiration
Date. "Expiration Date" shall mean the last day of the Term or such earlier date
upon which this Lease is terminated pursuant to the terms hereof. For all
purposes hereunder, the term "Lease Year" shall mean a twelve (12) month period
starting on the first day of the calendar month following the Term Commencement
Date (or the Term Commencement Date if it is on the first day of a Calendar
month) or any anniversary thereof and the first Lease Year shall begin on the
Term Commencement Date (and may include a period of slightly more than twelve
(12) months). The "Term" of this Lease shall mean and include the Initial Term,
any Extension Terms and the Permitted Holdover Term, if and to the extent timely
exercised by Tenant. The Scheduled Commencement Date represents merely the
parties' estimate of the Term Commencement Date. If the Premises are
Substantially Complete prior to the Scheduled Commencement Date, Tenant shall
have the option to take occupancy and the Term Commencement Date shall be the
date of such occupancy. Landlord shall provide Tenant as much notice as
circumstances

                                        5

<PAGE>

reasonably allow, of the date when Landlord expects to achieve Substantial
Completion, based upon the progress of the work.

                (b)     Extension Term. Provided that Tenant is not in default
of this Lease at the time of exercise (which shall mean that no Event of Default
has occurred and has not been cured during the applicable cure period, if any,
or otherwise waived in writing by Landlord), Tenant shall have two (2)
consecutive options to extend the Initial Term of this Lease (each an "Extension
Option") for the number of years and/or months set forth in the Basic Lease
Information Sheet as "Extension Terms" in Item 10, commencing on the day after
the expiration of the Initial Term and continuing through the Expiration Date,
subject to all of the terms and conditions of this Lease, except that Base Rent
shall be adjusted as provided below. Landlord shall provide Tenant with a
reminder notice no earlier than thirteen (13) months prior to the expiration of
the Initial Term and the first Extension Term, if applicable. Tenant shall
provide Landlord with written notice of Tenant's intent to exercise its
Extension Option by the later of ten (10) days following delivery of Landlord's
reminder notice or twelve (12) months prior to the expiration of the Initial
Term with respect to the first Extension Option, and by the later of ten (10)
days following delivery of Landlord's reminder notice or twelve (12) months
prior to the expiration of the first Extension Term with respect to the second
Extension Option. If Tenant does not deliver a notice of exercise by the
appropriate date then the Extension Option(s) shall immediately terminate and be
of no further force or effect and this Lease shall terminate on the scheduled
Expiration Date. If Tenant does not exercise the first Extension Option then the
second Extension Option shall terminate and be of no further force or effect.
Tenant's Extension Options shall be a Personal Right. As used herein the term
"Personal Right" shall mean a right which is personal to IDX Systems Corporation
or any Qualified Transferee and which may not be exercised by any Transferee
(other than a Qualified Transferee) without Landlord's prior written consent.
Base Rent for each Extension Term shall be determined as provided in Section
2.6(b). Tenant may, at its election, exercise an Extension Option as to the
entire Premises less all or any space leased by Tenant pursuant to Section
1.1(e), provided that simultaneously with the exercise of an Extension Option
Tenant shall designate in its notice the portion of such space to which the
Extension Option applies and if Tenant fails to do so, the Extension Option
shall be deemed exercised as to the entire Premises.

        2.2     Delay in Delivery. If Landlord, for any reason whatsoever,
cannot deliver possession of the Minimum Initial Premises to Tenant on the
Scheduled Commencement Date, this Lease shall not be void or voidable, nor shall
Landlord be liable to Tenant for any loss or damage resulting therefrom, except
as provided in this Section 2.2. Tenant understands and agrees that the Term
Commencement Date may be delayed beyond the Scheduled Commencement Date.

                (a)     Delays Before Commencement of Construction.

                        (i)     If Landlord has not commenced construction
(which shall mean beginning any work, (other than utility relocation and
demolition work) on the Real Property pursuant to a valid permit) on or before
January 1, 2002, then Tenant may elect to cancel this Lease by delivering
written notice to Landlord on or before January 15, 2002. If Landlord does not
commence construction within ten (10) Business Days after receipt of such notice
from Tenant then this Lease shall terminate and shall be of no further force and
effect and Landlord shall pay to Tenant the sum of One Million Dollars
($1,000,000) as liquidated damages but not as a penalty and Tenant waives any
other rights or remedies available to it at law or equity for such termination.
Tenant acknowledges that actual damages may be difficult to ascertain and that
this provision does not constitute a penalty. The parties acknowledge that these
damages have been specifically negotiated between Landlord and Tenant and that
the amount of such payment represents a reasonable estimation of the damages
that Tenant would suffer in the event Landlord terminates this Lease. If
Landlord commences construction within ten (10) Business Days after receipt of
Tenant's notice then such notice shall be deemed void and of no effect and this
Lease shall continue in full force and effect.

                                        6

<PAGE>

                        (ii)    If Landlord determines in its good faith
discretion that the Building cannot be constructed as currently planned, then
Landlord may cancel this Lease at any time before commencement of construction
by giving written notice to Tenant and this Lease shall terminate and be of no
further force and effect ten (10) days after the date of such notice; provided,
however, that if such notice is given after January 1, 2001, Landlord shall pay
to Tenant the sum of One Million Dollars ($1,000,000) as liquidated damages but
not as a penalty and Tenant waives any other rights or remedies available to it
at law or equity for such termination. Tenant acknowledges that actual damages
may be difficult to ascertain and that this provision does not constitute a
penalty. The parties acknowledge that these damages have been specifically
negotiated between Landlord and Tenant and that the amount of such payment
represents a reasonable estimation of the damages that Tenant would suffer in
the event Landlord terminates this Lease. If Landlord cancels this Lease
hereunder on or before January 1, 2001, Tenant shall not be entitled to receive
any payment hereunder other than reimbursement from Landlord for architectural
and design fees, consultant fees and similar costs (excluding legal fees)
actually incurred by Tenant, but in no event in excess of One and 50/100 Dollars
($1.50) for each square foot of Useable Area in the Initial Premises and
Expansion Space.

                (b)     Delays After Commencement of Construction.

                        (i)     If Landlord does not deliver possession of floor
3 through 11 inclusive (or floors 3 through 12, inclusive, if Tenant elects, by
written notice delivered to Landlord no later than January 1, 2002, to include
the Hold Space in the Minimum Initial Premises) (the "Minimum Initial Premises")
to Tenant in the condition required by Section 5.9 and Exhibit C, on or before
July 1, 2003, then Landlord shall reimburse Tenant on a monthly basis in arrears
for Tenant's actual out-of-pocket costs incurred to lease alternative space or
to reconfigure existing leased space (plus actual moving and build-out costs and
expenses) during the period of delay but only to the extent that the total
amount of such out-of-pocket costs exceeds the Rent that Tenant would have paid
under this Lease. The reimbursement under this Section 2.2(b)(i) shall be
calculated on a monthly basis for each month of delay; the maximum reimbursement
in any calendar month shall be the Base Rent that would have been payable for
such month under this Lease; and the maximum reimbursement hereunder shall not
exceed in the aggregate an amount equal to one-hundred eighty (180) days of Base
Rent that would have been payable under this Lease.

                        (ii)    If Landlord does not deliver the Minimum Initial
Premises on or before November 1, 2003, then Tenant may elect to cancel this
Lease by delivering written notice to Landlord no later than thirty (30) days
thereafter, this Lease shall terminate and, except as set forth below, neither
party shall have any liability hereunder. If Landlord despite good faith efforts
does not deliver the Minimum Initial Premises on or before April 1, 2004, then
Landlord may elect to cancel this Lease by delivering written notice in Tenant,
this Lease shall terminate and, except as set forth below, neither party shall
have any further liability hereunder. If Tenant elects to cancel this Lease and
Landlord delivers possession of the Minimum Initial Premises to Tenant within
ten (10) Business Days after receipt of Tenant's notice then such notice shall
be deemed void and of no effect and this Lease shall continue in full force and
effect. If this Lease is terminated by either party under this Section
2.2(b)(ii), Landlord shall not be required to make any payment to Tenant except
for the reimbursement under Section 2.2(b)(i) above through the effective date
of such termination and reimbursement for any architectural and design fees,
consultant fees and similar costs (excluding legal fees) actually incurred by
Tenant; provided, however, in no event shall the maximum reimbursement hereunder
exceed in the aggregate an amount equal to one-hundred eighty (180) days of Base
Rent that would have been payable under this Lease.

                (c)     Deadlines. The deadlines set forth in this Section 2.2.
shall be extended by any period of Tenant Delay (as defined in Exhibit C) and by
any delay attributable to Force Majeure (as defined in Section 14.20 below),
except the deadlines set forth in Section 2.2(a) shall not be extended by reason
of delays in obtaining permits for the construction of the Building.

                                        7

<PAGE>

        2.3     Confirmation. When the actual Term Commencement Date is
determined, Tenant shall, within ten (10) days after receipt thereof, execute
and return to Landlord a Lease Commencement Certificate in the form of Exhibit E
attached hereto, or any similar form reasonably requested by Landlord,
confirming the information thereon. Failure within such time to execute and
return or to object in writing to the Lease Commencement Certificate shall be
conclusively deemed to be an acknowledgement that Tenant agrees to the terms
shown thereon and Tenant shall be deemed to have confirmed that the certificate
is correct as presented.

        2.4     Uses. Subject to the restrictions set forth in Section 7.1,
Tenant shall use the Premises solely for executive, professional, corporate or
administrative offices, software training, computer rooms and related support
services (including a food service area, subject to Landlord's review and
approval of plans therefor) (the "Permitted Use"), provided that Tenant may not
seek a variance for any use not currently permitted in the Building and provided
further that Tenant's use must be compatible with a premier Class A office
building as then operated by Landlord. Notwithstanding the foregoing, for the
purpose of limiting the type of use permitted by Tenant, or any party claiming
through Tenant, but without limiting Landlord's right to lease any portion of
the Building to a tenant of Landlord's choice, the Permitted Use shall not
include: (a) offices of any agency or bureau of the United States or any state
or political subdivision thereof; (b) offices or agencies of any foreign
government or political subdivision thereof; (c) offices of any health care
professionals or service organization, except for administrative offices where
no diagnostic, treatment or laboratory services are performed; (d) schools or
other training facilities that are not ancillary to executive, professional or
corporate administrative office use; (e) retail or restaurant uses; (f)
broadcast studios or other broadcast production facilities, such as radio and/or
television stations; (g) product display or demonstration facilities; (h)
offices at which deposits or bills are regularly paid in person by customers; or
(i) personnel agencies, except offices of executive search firms. If Tenant
assigns this Lease or subleases all or any portion of the Premises, the
subtenant or assignee shall not be permitted to use the Premises in any manner
that would conflict with any exclusive use rights that Landlord may hereafter
grant to any other tenant in the Building.

        2.5     Payments by Tenant. As used herein, the term "Rent" shall
include Base Rent, Operating Costs (as defined in Article 4 below) and all other
sums payable by Tenant to Landlord. Tenant shall pay Rent at the times and in
the manner herein provided. All obligations of Tenant hereunder to make payments
to Landlord shall constitute Rent and failure to pay the same when due shall
give rise to the rights and remedies provided in Section 13.2.

        2.6     Payment of Base Rent

                (a)     In General. Tenant's obligation to pay Rent and its
other obligations under this Lease shall commence upon the Term Commencement
Date (except as expressly otherwise provided herein with respect to obligations
arising earlier). Tenant shall pay the Base Rent in the amounts set forth in the
Basic Lease Information Sheet as Item 11 (as the same may be adjusted from time
to time hereunder) in advance on or before the first day of each calendar month
during the Term and any extensions or renewals thereof; provided, however, that
Base Rent for the first full calendar month following the Term Commencement Date
shall be paid in advance upon Landlord's commencement of construction of the
Building and recording of a memorandum of this Lease as provided in Section
14.14. All payments of Rent due under this Lease shall be payable in advance,
without demand (except as specifically provided herein) and, except as
specifically provided herein, without reduction, abatement, counterclaim or
setoff, at the address specified in the Basic Lease Information Sheet as Item 6,
or at such other address as may be designated by Landlord.

                (b)     Adjustment of Base Rent. In the event that Tenant
exercises any Extension Option under Section 2.l(b) or exercises its right of
first offer under Section 1.1(e), the Base Rent for each such period or such
space, as applicable, shall be determined as follows:

                        (i)     [Intentionally Omitted]

                                        8

<PAGE>

                        (ii)    Extension Term Base Rent. Base Rent for an
Extension Term shall be the greater of (A) the ninety-five percent (95%) of Fair
Market Rent based on a six (6) year term to begin on the first day of the
Extension Term (the "Extension Term Adjustment Date"), or (B) the Base Rent in
effect on the last day of the Initial Term.

                        (iii)   Offer Space Base Rent. Base Rent for the Offer
Space shall be equal to the greater of (A) Fair Market Rent as of the date the
space is added to the Premises (the "Offer Space Adjustment Date"), or (B) the
Base Rent rate for such space as set forth in Item 11 to the Basic Lease
Information Sheet in effect during the Lease Years for which the space will be
included in the Premises.

                        (iv)    "Fair Market Rent" as of any date shall mean the
rate being charged during the preceding six (6) month period by direct landlords
(including Landlord), in nonsublease, nonassignment, nonequity, nonexpansion
lease transactions, for comparable space with comparable quality construction in
the Building and comparable projects in the Market Area, taking into
consideration: location in the Building or other building, the quantity and
quality of tenant improvements or allowances existing or to be provided,
proposed term of lease, extent of service provided or to be provided, the
ownership of the comparable space, the time the particular rate under
consideration became or is to become effective and any other relevant terms,
conditions or concessions but excluding brokerage commissions. "Market Area"
means the following projects and buildings located in the Seattle central
business district: Bank of America Tower (located at 701 5th Avenue), Washington
Mutual Tower (located at 1201 3rd Avenue); U.S. Bank Centre (located at 1420 5th
Avenue); and Two Union Square (located at 601 Union Street); provided that such
buildings continue to be maintained as premier Class A quality office projects.

        The term "Adjustment Date" shall mean each of the Extension Term
Adjustment Date or the Offer Space Adjustment Date, as applicable to the
calculation of Fair Market Rate then under consideration. Fair Market Rent as of
any Adjustment Date shall be determined by Landlord with written notice given to
Tenant not later than ninety (90) days prior to the applicable Adjustment Date
(or simultaneously with an Availability Notice for Offer Space as provided in
Section 1.1 (c), subject to Tenant's right of arbitration pursuant to the
provisions of Section 2.6(b)(v). Failure on the part of Landlord to give such
notice in a timely manner shall not vitiate the right to require adjustment of
Base Rent, but such delay shall result in deferral of the Adjustment Date to the
date ninety (90) days after the date of such notice. With respect to the
Extension Options only, if the parties have not agreed in writing upon Fair
Market Rent within sixty (60) days after the date in which Tenant exercises an
Extension Option, Tenant shall elect in writing within ten (10) days thereafter
either to (A) revoke its notice of exercise (in which case this Lease shall
terminate on the scheduled Expiration Date), or (B) demand arbitration in
accordance with the terms of this Section 2.6 (b). With respect to the Offer
Space, Tenant may by written notice demand arbitration within forty-five (45)
days after receipt of notice from Landlord of Landlord's determination of Fair
Market Rent. If Tenant does not demand arbitration, Tenant shall be deemed to
have accepted the Fair Market Rent as determined by Landlord. Should Tenant
elect to arbitrate and should the arbitration not be concluded prior to the
applicable Adjustment Date, Tenant shall pay Rent to Landlord after the
Adjustment Date, including Base Rent adjusted to reflect Fair Market Rent as
Landlord has so determined. If the amount of Fair Market Rent as determined by
arbitration is greater than or less than Landlord's determination, then any
adjustment required to correct the amount previously paid shall be made by
payment by the appropriate party within ten (10) days after such determination
of Fair Market Rent.

                        (v)     Arbitration of Fair Market Rent. If Tenant
disputes the amount claimed by Landlord as Fair Market Rent, the parties shall
attempt to agree on Fair Market Rent within thirty (30) days thereafter. If such
dispute cannot be resolved by mutual agreement, the dispute shall be submitted
to arbitration. The award rendered in any such arbitration may be entered in any
court having jurisdiction and shall be final and binding between the parties.
The arbitration shall be conducted and determined in the City of Seattle,
Washington, in accord with the then-prevailing commercial arbitration

                                        9

<PAGE>

rules of the American Arbitration Association or its successor for arbitration
of commercial disputes except that the procedures mandated by said rules shall
be modified as follows:

                                (A)     Tenant shall make demand for arbitration
in writing within forty-five (45) days after receipt of Landlord's
determination of Fair Market Rent. Tenant's arbitration demand shall specify (a)
the name and address of the person to act as the arbitrator on its behalf, and
(b) Tenant's determination of Fair Market Rent. The arbitrator shall be
qualified as a real estate appraiser with at least five (5) years experience
appraising first-class commercial office space in the downtown Seattle area who
would qualify as an expert witness over objection to give testimony addressed to
the issue in a court of competent jurisdiction. Failure on the part of Tenant to
make a timely and proper demand for arbitration shall constitute a waiver of the
right to arbitration. Within ten (10) Business Days after receipt of Tenant's
demand for arbitration, Landlord shall have the right to give notice in writing
to Tenant of Landlord's adjusted determination of Fair Market Rent. Within ten
(10) Business Days following Tenant's receipt of such notice, if Tenant and
Landlord have not agreed upon Fair Market Rent, Tenant shall notify Landlord in
writing that Tenant desires to renew its demand for arbitration. Failure on the
part of Tenant to give such notice shall constitute a waiver of the right to
arbitration, and Tenant shall be deemed to have accepted Landlord's adjusted
determination of Fair Market Rent. Within ten (10) Business Days after the
receipt of a notice renewing the demand for arbitration, Landlord shall give
notice to Tenant, specifying the name and address of the person designated by
Landlord to act as arbitrator on its behalf who shall be similarly qualified. If
Landlord fails to notify Tenant of the appointment of its arbitrator, within or
by the time above specified, then the arbitrator appointed by Tenant shall be
the arbitrator to determine the issue.

                                (B)     If two (2) arbitrators are chosen
pursuant to the preceding Section, the arbitrators so chosen shall meet within
ten (10) Business Days after the second arbitrator is appointed and, if within
ten (10) Business Days after such first meeting the two arbitrators have not
agreed upon a determination of Fair Market Rent, they shall appoint a third
arbitrator, who shall be a competent and impartial person with qualifications
similar to those required of the first two arbitrators. If they are unable to
agree upon such appointment within five (5) Business Days after expiration of
said ten (10) day period, the third arbitrator shall be selected by the parties
themselves if they can agree thereon, within a further period of ten (10)
Business Days. If the parties do not so agree, then either party, on behalf of
both, may request appointment of such a qualified person by a court of the State
of Washington sitting in King County pursuant to RCW 7.04.050. Request for
appointment shall be made in writing with a copy given to the other party. Each
party agrees that said court shall have the power to make the appointment;
provided, however, if the court does not make a determination within ten (10)
days of request by either party for the appointment of a third arbitrator,
appointment of such third arbitrator shall be made in accordance with the
selection procedure of the commercial arbitration rules of the American
Arbitration Association or its successor for arbitration of commercial disputes.
The three (3) arbitrators shall decide the dispute, if it has not previously
been resolved, by following the procedure set forth below.

                                (C)     The arbitrator selected by each of the
parties shall state in writing his or her determination of the Fair Market Rent,
supported by the reasons therefor, and shall deliver a copy to each party. The
arbitrators shall arrange for a simultaneous exchange of such proposed
resolutions. The role of the third arbitrator shall be to select which of the
two (2) proposed resolutions most closely approximates his or her determination
of Fair Market Rent. The third arbitrator shall have no right to propose a
middle ground or any modification of either of the proposed resolutions. The
resolution he or she chooses as most closely approximating his or her
determination of Fair Market Rent shall constitute the decision of the
arbitrators and shall be final and binding upon the parties.

                                (D)     If any arbitrator fails, refuses or is
unable to act, his or her successor shall be appointed by him or her, but in the
case of the third arbitrator, his or her successor shall be appointed in the
same manner as provided for appointment of the third arbitrator. The arbitrators
shall attempt to decide the issue within ten (10) Business Days after the
appointment of the third arbitrator.

                                       10

<PAGE>

Any decision in which the arbitrator appointed by Landlord and the arbitrator
appointed by Tenant concur shall be binding and conclusive upon the parties.
Each party shall pay the fees and costs of its own counsel. The losing party
shall pay the fees and costs of the arbitrators and of the expert witnesses (if
any) of the prevailing party as well as those of its expert witnesses. For
purposes hereof, the losing party shall be that party whose selected
arbitrator's statement of Fair Market Rent was not selected by the third
arbitrator.

                                (E)     The arbitrators shall have the right to
consult experts and competent authorities with factual information or evidence
pertaining to a determination of Fair Market Rent, but any such consultation
shall be made in the presence of both parties with full right on their part to
cross-examine. The arbitrators shall not be restricted to or bound by Landlord's
or Tenant's determination of Fair Market Rent which precede the exchange of the
arbitrators' determinations under Section 2.6(b)(v)(C), nor shall either
Landlord's or Tenant's determination be disclosed to the arbitrators. The
arbitrators shall render their decision and award in writing and shall deliver
copies to each party. The arbitrators shall have no power to modify the
provisions of this Lease.

        2.7     Partial Months. If the Term Commencement Date occurs on other
than the first day of a calendar month, then Base Rent and Operating Costs for
such partial calendar month shall be prorated and the prorated installment shall
be paid on the Term Commencement Date together with any other amounts payable on
that day. If the Expiration Date occurs on other than the last day of a calendar
month, then Base Rent and Operating Costs for such partial calendar month shall
be prorated and the prorated installment shall be paid on the first day of the
calendar month in which the Expiration Date occurs.

        2.8     Early Commitment Rent Credit Incentive. Landlord shall provide
the following credit against Tenant's Base Rent, which credit is a Personal
Right:

                (a)     Base Rent Credit. Provided that Tenant is not in default
under the terms of this Lease (which shall mean that no Event of Default has
occurred and has not been cured during the applicable cure period, if any),
during Lease Years 2 through 4 of the Initial Term Landlord shall provide to
Tenant a monthly credit against Base Rent in an amount equal to Twenty Thousand
Dollars ($20,000) per month (the "Base Rent Credit"); provided, however, that in
no event shall the total Base Rent Credit exceed Seven Hundred Twenty Thousand
Dollars ($720,000).

                (b)     Recapture and Repayment in Event of Tenant Default. In
the event that Tenant is in default under this Lease and said default is not
cured within the applicable cure period, if any, then at the option of Landlord,
Tenant's right to receive the Base Rent Credit shall terminate and an amount
equal to all Base Rent Credits previously advanced to Tenant pursuant to this
Section 2.8 shall be immediately due and payable by Tenant to Landlord in
immediately available funds.

                                    ARTICLE 3
                                SECURITY DEPOSIT

        [INTENTIONALLY OMITTED.]

                                    ARTICLE 4
                           PAYMENT OF OPERATING COSTS

        4.1     Net Lease. This is a net lease. Base Rent shall be paid to
Landlord absolutely net of all costs and expenses. The provisions of this
Article 4 for payment of Operating Costs by means of periodic payment of
Tenant's Proportionate Share (as defined in Section 4.3) of Estimated Operating
Costs (as defined in Section 4.2) and the Operating Costs Adjustment (as defined
in Section 4.6) are intended to pass on to Tenant and reimburse Landlord for
Tenant's Proportionate Share of all costs and expenses of the nature described
in Section 4.4.

        4.2     Estimated Payments. Tenant shall pay Tenant's Proportionate
Share of Estimated Operating Costs in advance on or before the first day of each
calendar month during the Term and any

                                       11

<PAGE>

extensions or renewals thereof. "Estimated Operating Costs" for any calendar
month shall mean Landlord's estimate of Operating Costs for the calendar year
within which such month falls, divided into twelve (12) equal monthly
installments. Landlord shall provide Tenant with a statement setting forth the
Estimated Operating Costs and Tenant's Proportionate Share thereof within a
reasonable period of time after the Term Commencement Date and the commencement
of each calendar year thereafter. Landlord, acting reasonably, may adjust such
estimate from time to time by written notice. Until a new statement of Estimated
Operating Costs is received Tenant shall continue to make the monthly payment of
Estimated Operating Costs applicable to the prior year.

        4.3     Tenant's Proportionate Share. "Tenant's Proportionate Share"
shall be calculated by Landlord for each calendar year of the Term and shall
mean a percentage equal to the Net Rentable Area of the Premises divided by the
greater of (a) ninety-five percent (95%) of the total Net Rentable Area in the
Building leased or held for lease or (b) the Net Rentable Area of the Building
actually leased to tenants. Tenant's Proportionate Share shall initially be the
percentage set forth in the Basic Lease Information Sheet as Item 8, and shall
be adjusted by Landlord, pursuant to Section 1.1 and when and as additional
space is added to the Minimum Initial Premises.

        4.4     Operating Costs. "Operating Costs" shall mean all expenses and
costs (but not specific costs that are separately billed to and paid by specific
tenants) of every kind and nature that Landlord shall pay or incur or become
obligated to pay or incur (including, without limitation, costs incurred by
managers and agents that are reimbursed by Landlord) because of or in connection
with the management, repair, maintenance, replacement, preservation, ownership
and operation of the Building and any supporting facilities directly serving the
Building (as allocated to the Building in accordance with standard accounting
practices, consistently applied). Operating Costs shall include, but not be
limited to the following types of expenses:

                (a)     Wages, salaries, reimbursable expenses and benefits of
all on-site and off-site personnel engaged in the operation, repair, maintenance
and security of the Building and the direct costs of training such employees.

                (b)     Costs (including allocated rental) for the property
management office and office operation; and costs (excluding allocated rental)
of operating exercise facilities in the Building, if any, available for use by
tenants (including the cost of acquiring or leasing equipment therein) to the
extent such costs exceed revenues generated therefrom.

                (c)     All supplies, materials and rental equipment used in the
operation and maintenance of the Building, including, without limitation, the
cost of erecting, maintaining and dismantling art work and similar decorative
displays commensurate with operation of a Class A office project.

                (d)     Utilities, including, without limitation, water, power,
sewer, waste disposal, communication and cable television facilities, heating,
cooling, lighting and ventilation of the Building.

                (e)     All maintenance, extended warranties (amortized over the
period of such warranty), janitorial and service agreements for the Building and
the equipment therein, including, but not limited to, alarm service, window
cleaning, elevator maintenance, and maintenance and repair of the Building and
all Building Components.

                (f)     A management fee equal to three percent (3%) of all
revenue (excluding such management fee) derived from the Building, including
without limitation, all Rent hereunder, all rent and other payments derived from
other tenants in the Building, and other revenues derived from licenses of any
other part of or right in the Building other than parking revenues.

                (g)     Reasonable legal and reasonable accounting services for
the Building, including, but not limited to, the costs of audits by certified
public accountants of Operating Costs records; provided,

                                       12

<PAGE>

however, that Operating Costs shall not include legal fees related to (i)
negotiating lease terms for prospective tenants, (ii) negotiating termination or
extension of leases with existing tenants, (iii) proceedings against tenants
unless such proceedings are reasonably expected to benefit Tenant, in whole or
in part, or (iv) the initial development and/or initial construction of the
Building.

                (h)     All insurance premiums and costs, including but not
limited to, the premiums and cost of fire, casualty, liability, rental abatement
or interruption and earthquake insurance applicable to the Building and
Landlord's personal property used in connection therewith (and all amounts paid
as a result of loss sustained that would be covered by such policies but for
"deductible" or self-insurance provisions).

                (i)     Repairs, replacements and general maintenance of the
Building (except for repairs and replacements (x) paid for from the proceeds of
insurance, or (y) paid for directly by Tenant, other tenants or any third
party).

                (j)     All real and personal property taxes, assessments, local
improvement or special benefit district charges and other governmental charges,
special and general, known and unknown, foreseen and unforeseen, of every kind
and nature whatsoever (i) attributable to the Real Property or the Building or
levied, assessed or imposed on, the Real Property or the Building, or any
portion thereof, or interest therein; (ii) attributable to or levied upon
Landlord's personal property located in, or used in connection with the
Building; (iii) surcharges and all local improvement or special benefit and
other assessments levied with respect to the Building, the Real Property, and
all other property of Landlord used in connection with the operation of the
Building; (iv) any taxes levied or assessed in lieu of, in whole or in part, or
in addition to such real or personal property taxes; (including, but not limited
to, leasehold taxes, business and occupation taxes and taxes or license fees
upon or measured by the leasing of the Building or the rents or other income
collected therefrom); (vi) any and all costs, expenses and attorneys' fees paid
or incurred by Landlord in connection with any proceeding or action to contest,
in good faith, in whole or in part, formally or informally, the imposition,
collection or validity of any of the foregoing taxes, assessments, charges or
fee (collectively, "Real Property Taxes"). If by law any Real Property Taxes may
be paid in installments at the option of the taxpayer, then Landlord shall
include within Real Property Taxes for any year only those installments
(including interest, if any) which would become due by exercise of such option.
Real Property Taxes shall not include (x) inheritance or estate taxes imposed
upon or assessed against the Building, or any part thereof or interest therein,
or (y) federal or state income taxes computed upon the basis of the Landlord's
net income.

                (k)     Amortization (together with reasonable financing
charges) of capital improvements made to the Building (i) which are reasonably
necessary to comply with the requirements of law, ordinance, rule or regulation
to the extent any such requirement adopted, enacted or issued after issuance of
the building permit for the Building, (ii) to replace items which Landlord would
be obligated to maintain under this Lease (excluding the structural elements,
roof and the exterior of the Building); or (iii) which have a reasonable
probability of improving the operating efficiency or reducing Operating Costs of
the Building. As used in this Section, "amortization" shall mean allocation of
the cost equally to each year of useful life of the items being amortized.
Notwithstanding the foregoing, however, Landlord may treat as expenses
(chargeable in the year incurred), and not as capital costs, items that are less
than two percent (2%) of Estimated Operating Costs for the year in question.

                (l)     All charges of any kind and nature imposed, levied,
assessed, charged or collected by any governmental authority or other entity
either directly or indirectly (i) for or in connection with public improvements,
user, maintenance or development fees, transit, parking, housing, employment,
police, fire, open space, streets, sidewalks, utilities, job training, child
care or other governmental services or benefits, (ii) for environmental matters
or as a result of the imposition of mitigation measures, including compliance
with any transportation management plan, or fees, charges or assessments as a

                                       13

<PAGE>

result of the treatment of the Building, or any portion thereof or interest
therein, as a source of pollution or storm water runoff.

        Notwithstanding the foregoing, "Operating Costs" shall not include: (i)
costs of special services separately billable to other tenants, (ii) leasing
commissions and related leasing expenses, (iii) salaries for management above
the level of group property manager (but travel costs and other reimbursable
expenses shall not be subject to this exclusion and may be included in Operating
Costs), (iv) amounts received from insurance claims and costs of repair and
reconstruction related thereto (other than deductible amounts under applicable
insurance policies), (v) marketing, advertising and promotional fees related to
the marketing of the Building or space therein; (vi) loan fees, costs and
penalties, (vii) costs to correct initial construction defects in the Building,
(viii) penalties due to violation of law, late payments or similar impositions
against landlord or the Real Property, (ix) tenant improvements costs, (x)
damages for any default, breach, claim or judgment of or against Landlord,
except to the extent caused by Tenant, (xi) rental on ground leases, (xii)
environmental remediation, encapsulation or removal costs for conditions that
existed and were known to be hazardous as of the date of this Lease, (xiii)
costs of acquiring sculptures, paintings and similar art objects (except to the
extent required by any Law following the initial construction of the Building),
(xiv) payments to parties affiliated with Landlord in excess of the prevailing
market fees for similar services, (xv) political or charitable contributions and
lobbying costs and expenses, other than lobbying costs and expense that
Landlord reasonably believes will benefit tenants in the Building, (xvi)
development and permit fees and other costs of development and construction
incurred in connection with the initial construction of the Building, (xvii)
costs and expenses associated with the operation, maintenance, repair or
improvement of the Garage, and (xviii) costs of any conference center as
provided in Section 14.27.

        4.5     Adjustment for Occupancy. Notwithstanding any other provision
herein to the contrary, if during any year of the Term the Building is not fully
occupied or all premises within the Building do not receive Basic Services (as
defined in Section 5.1 below), then an adjustment shall be made in computing
Operating Costs for such year so that Operating Costs shall be computed as
though the Building had been fully occupied and provided with Basic Services
during such year; provided, however, that in no event shall Landlord collect in
total, from Tenant and all other tenants of the Building, an amount greater than
one hundred percent (100%) of Operating Costs during any year of Term.

        4.6     Computation of Operating Costs Adjustment. The term "Operating
Costs Adjustment" for any calendar year shall mean the difference, if any,
between Estimated Operating Costs and actual Operating Costs for that calendar
year. Landlord shall, within a reasonable period of time after the end of any
calendar year for which Estimated Operating Costs differs from actual Operating
Costs, give written notice thereof to Tenant (a "Cost Statement"). The Cost
Statement shall include a statement of the total Operating Costs applicable to
such calendar year, reasonable back-up information showing expense categories
and the computation of the Operating Costs Adjustment. Landlord's failure to
give such Cost Statement within a reasonable period of time after the end of any
calendar year for which a Operating Costs Adjustment is due shall not release
either party from the obligation to make the adjustment provided for in Section
4.7.

        4.7     Adjustment for Variation Between Estimated and Actual. If
Tenant's Proportionate Share of Operating Costs for any calendar year exceeds
the payments received by Landlord towards Tenant's Proportionate Share of
Estimated Operating Costs for such year, Tenant shall pay to Landlord Tenant's
Proportionate Share of the Operating Costs Adjustment within thirty (30) days
after the date of the Cost Statement. If the Tenant's Proportionate Share of
Operating Costs for any calendar year is less than the payments received by
landlord towards Tenant's Proportionate Share of Estimated Operating Costs for
such year, then Landlord shall pay Tenant's Proportionate Share of the Operating
Costs Adjustment to Tenant in cash, such payment to be made within fifteen (15)
days after the first Rent installment paid following such determination. If the
Term commences or terminates at any time other than the first day of a calendar
year, Tenant's Proportionate Share of the Operating Costs Adjustment

                                       14

<PAGE>

shall be calculated based upon the exact number of calendar days during such
calendar year that fall within the Term, and any payment by Tenant required
hereunder shall be paid even if the Term has expired when such determination is
made.

        4.8     Tenant's Audit Right. Provided that Tenant delivers written
notice of its intent to audit within ninety (90) days after receipt by Tenant of
Landlord's Cost Statement and completes such audit within one hundred and twenty
(120) days thereafter, Tenant shall have the right to conduct a reasonably and
specifically defined audit of Landlord's books and records relating to Operating
Costs during the prior two (2) calendar years in accordance with the following
terms and provisions:

                (a)     Tenant shall not then be in default in its obligations
under this Lease beyond any applicable notice and cure period with respect to
payment of Base Rent and Tenant's Proportionate Share of Operating Costs.

                (b)     Tenant shall have the right to have an employee of
Tenant or a Qualified Auditor inspect Landlord's accounting records at
Landlord's office no more than once per calendar year.

                (c)     Neither the employee of Tenant nor the Qualified Auditor
shall be employed or engaged on a contingency basis, in whole or in part.

                (d)     Prior to commencing the audit, Tenant and the auditor
shall: (i) provide Landlord with evidence that the auditor is from a nationally
recognized accounting firm or one of the top five (5) accounting firms in the
Seattle metropolitan area and is a certified public accountant or other
individual with appropriate experience who is mutually acceptable to Landlord
and Tenant (a "Qualified Auditor")); (ii) each sign a reasonable confidentiality
letter to be provided by Landlord, consistent with the provisions of this
Section 4.8; (iii) provide a signed representation certified by the auditor's
chief financial officer, chief executive officer or managing partner (or
equivalent) that such auditing firm is acting as an independent accountant in
the conduct of the audit; and (iv) provide Landlord with a full copy of all
correspondence, instructions and engagement letters between the auditor and
Tenant.

                (e)     Tenant shall have the right to conduct an accuracy
audit, which shall be limited solely to: (i) confirming that the Operating Costs
reported in the Cost Statement are consistent with Landlord's books and records;
(ii) confirming that Landlord has reasonable support for the expenses and items
of expenses as reported by Landlord in the Cost Statement; (iii) confirming that
Landlord has not accidentally or fraudulently charged the same item of expenses
on a duplicate basis to the Building; (iv) confirming that Landlord has not
charged any item specifically excluded from Operating Costs in this Lease; (v)
reviewing the procedure for gross-up to confirm that it is consistent with the
terms of this Lease relative to such procedures; and (vi) confirming that Tenant
has been properly allocated Tenant's Proportionate Share of Operating Costs.
Except as specifically provided in Section 4.8(f) below, the auditor shall not
make any judgments as to the reasonableness of any item of expense and/or the
Operating Costs of the Building, nor shall such reasonableness be subject to
audit.

                (f)     In addition to the accuracy audit right under Section
4.8(e) above, if Operating Costs (excluding Real Property Taxes and other costs
under Sections 4.4(k) and (l) (hereinafter, "Excluded Items")) have increased by
more than five percent (5%) annually on a cumulative basis over the Operating
Costs (excluding Excluded Items) charged in the first calendar year of full
operation of the Building, then Tenant shall have the right to conduct a limited
audit as to the reasonableness of such Operating Costs, but such reasonableness
audit shall be limited solely to determining whether a (i) specific item of
expense included in Operating Costs (excluding Excluded Items) has increased by
more than five percent (5%) annually on a cumulative basis over the amount
charged in the first calendar year of full operation of the Building; and (ii)
such increase is unreasonable, considering such factors as inflation, changes in
laws and other items outside of Landlord's direct control.

                (g)     If Tenant's auditor finds, in the course of its (i)
accuracy audit under Section 4.8(e) above, errors or over or under charges in
Landlord's Cost Statement, or (ii) limited

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<PAGE>

reasonableness audit under Section 4.8(f), evidence that Operating Costs, in
general, and specific items of Operating Costs, in particular, have increased by
more than the five percent (5%) of the cumulative amount set forth in Section
4.8(f); then said findings must be promptly and simultaneously reported to both
Landlord and Tenant, with full written support for such findings and specific
reference to the relevant Lease provisions disqualifying such expenses, if
applicable. Landlord shall have a reasonable opportunity to meet with Tenant's
auditor (and any third auditor selected hereinbelow) to explain its charges and
any increases, it being the understanding of Landlord and Tenant that Landlord
intends to operate the Building as a first-class office building with services
at or near the top of the market. If Landlord agrees with said findings,
appropriate rebates or charges shall be made to Tenant in accordance therewith.
If Landlord does not agree, Landlord shall engage its own auditor (who shall be
a Qualified Auditor) to review the findings of Tenant's auditor and Landlord's
books and records. The two auditors shall then meet to resolve any difference
between the audits. If agreement cannot be reached within two (2) weeks after
the auditors' initial meeting, then the auditors shall together select a third
auditor (who shall be a Qualified Auditor) to which they shall each promptly
submit their findings in a final report, with copies submitted simultaneously to
the first two auditors, Tenant and Landlord. The third auditor shall leave
submitted findings unopened for a period of two (2) weeks, during which time
Landlord and Tenant may attempt to reach a negotiated settlement and Landlord
shall have a reasonable opportunity to meet with the third auditor to explain
its charges and any increases. If no settlement is reached, then within fifteen
(15) days following the completion of such two-week period, the third auditor
shall determine which of the two reports best meets the terms of this Lease,
which report shall become the "Final Finding." The third auditor shall not have
the option of selecting a compromise between the first two auditors' findings,
nor to make any other finding.

                (h)     If the Final Finding determines that (a) there were
errors or over or under charges in Landlord's Cost Statement, then Landlord or
Tenant, as the case may be, shall reimburse the other party for any such
amounts; or (b) Landlord has charged Tenant for Operating Costs, in general, and
specific items of Operating Costs, in particular, in excess of the five percent
(5%) cumulative amount set forth in Section 4.8(f) above, then Landlord shall
reimburse Tenant for all amounts paid by Tenant in excess of the greater of (1)
the actual Operating Cost charged for the item(s) in question during the prior
calendar year, or (2) the amount deemed reasonable for such item(s) of Operating
Costs in the Final Finding. If reimbursement is required to be paid to Tenant
hereunder, Landlord shall make such payment within fifteen (15) days after the
first Rent installment paid following determination of the Final Finding. If the
Final Finding determines that Tenant was undercharged, then within thirty (30)
days after the Final Finding, Tenant shall reimburse Landlord the amount of such
undercharge.

                (i)     If the Final Finding results in a credit to Tenant in
excess of three percent (3%) of Tenant's Proportionate Share of the total
Operating Costs, Landlord shall pay its own audit costs and reimburse Tenant for
its costs associated with said audits. If the Final Finding results in no credit
to Tenant, Tenant shall pay its own costs and reimburse Landlord for its costs
associated with said audits. In all other events, each party shall pay its own
audit costs, including one half (1/2) of the cost of the third auditor.

                (j)     The results of any audit of Operating Costs hereunder
shall be treated by Tenant, all auditors, and their respective employees and
agents as confidential, and shall not be discussed with nor disclosed to any
third party.

                                    ARTICLE 5
                              LANDLORD'S COVENANTS

        5.1     Basic Services. Provided that Tenant is not in default of its
obligations under this Lease (which shall mean that no Event of Default has
occurred which has not been cured during the applicable cure period, if any),
during Tenant's occupancy of the Premises Landlord shall maintain the Building
as a first class office building and shall provide the following ("Basic
Services"):

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<PAGE>

                (a)     Administration of construction of the Tenant
Improvements (as defined in Section 5.7) in the Premises in accordance with
Exhibit C.

                (b)     Cold and hot water (other than hot water for special
needs which will be supplied as an Extra Service) at those points of supply
provided for general use of other tenants in the Building.

                (c)     Central heat and air conditioning in season, at such
temperatures and in such capacities as are considered within the performance
criteria for the Building's systems as set forth on Exhibit C-l or as may
otherwise be permitted or controlled by applicable laws, ordinances, rules and
regulations, during Normal Office Hours.

                (d)     Routine maintenance, repairs, structural and exterior
maintenance (including exterior glass and glazing), painting and electric
lighting service for all public areas and special service areas of the Building
in the manner and to the extent deemed by Landlord to be necessary or desirable.
Landlord's obligation with respect to repair as part of Basic Services under
this Section 5.1 shall be limited to (i) the structural portions of the
Building, (ii) the exterior walls of the Building, including glass and glazing,
(iii) the roof, (iv) mechanical, electrical, plumbing and life safety systems
that are considered Building Standard Improvements (as defined Exhibit C
attached hereto), and (v) maintenance of the Common Areas in a manner consistent
with a first class office building.

                (e)     Janitorial service on a five (5) day week basis,
excluding holidays, generally in conformance with the specifications set forth
on Exhibit H attached hereto.

                (f)     An electrical system to convey power delivered by public
utility or other providers selected by Landlord, in amounts sufficient for
normal office operations at all times (but during hours other than Normal Office
Hours as an Extra Service) as provided in similar office buildings, but not to
exceed a total allowance of four and one-half (4.5) watts per square foot of Net
Rentable Area (which includes an allowance for lighting of the Premises),
provided that no single item of electrical equipment consumes more than one-half
(0.5) kilowatt at rated capacity or requires a voltage other than one hundred
twenty (120) volts, single phase. If Tenant's electrical requirements, as
estimated by Landlord based upon rated capacity (or based upon metered
consumption), exceed four (4) watts per square foot of Net Rentable Area or if
Tenant installs equipment exceeding the foregoing capacity, Tenant shall pay the
full amount of such excess together with any additional cost necessary to
provide such excess capacity. If the installation and operation of Tenant's
electrical equipment requires additional air conditioning capacity above that
provided by the Building Standard Improvements (as defined in Exhibit C), then
the cost of installing additional air conditioning and operation thereof
(including utilities) shall be paid by Tenant and shall be considered an Extra
Service, subject to the provisions of Section 5.4 below. If Landlord determines
that Tenant's electricity usage will exceed the permitted amount based on its
review of the equipment that Tenant proposes installing in the Premises, Tenant
shall pay for the installation and operation of utility metering devices to
measure actual utility consumption in the Premises and installation of meters
and the necessary equipment to distribute such excess energy to the Premises
shall be included in the Tenant Improvements.

                (g)     Installation, maintenance and replacement of lamps,
bulbs and ballasts used in the Premises.

                (h)     Twenty-four (24) hour security service for the Building,
including a staffed security station, electronic card key access system, motion
detectors, remote voice intercom and surveillance cameras, or such other
comparable security systems as Landlord deems appropriate for the Building;
provided, however, that the security service shall be provided by unarmed
personnel and shall not include alarm systems for special surveillance of the
Premises; and provided, further, that Landlord shall not be liable to Tenant or
any third party for any breach of security or any losses due to theft, burglary,
battery or for damage done or injury inflicted by persons in or on the Building.
Landlord shall provide to Tenant, at no additional cost, an initial set of card
key access cards in an amount not to exceed

                                       17

<PAGE>

one (1) card for every one hundred eighty (180) square feet of Useable Area in
the Premises, and Tenant shall be responsible for reimbursing Landlord for the
cost of all additional or replacement cards.

                        (i)     Public elevator service to the Garage and the
floors on which the Premises are situated twenty-four (24) hours per day, seven
(7) days per week.

        5.2     Hours of Operation. The term "Business Days" shall mean Monday
through Friday, excluding State and Federal holidays and all days that
maintenance employees of the Building are entitled to take off or to receive
extra compensation for, from time to time under their union contract or other
agreement. The term "Normal Office Hours" shall mean Business Days from 7:00
a.m. to 6:00 p.m., and Saturdays from 9:00 a.m. to 1:00 p.m. In addition to
Normal Office Hours, to the extent needed by Tenant or any other tenant in the
Building, Landlord shall provide extended operating hours for standard lighting
and heating, ventilating and air conditioning from 6:00 p.m. to 9:00 p.m. on
Business Days and 1:00 p.m. to 3:00 p.m. on Saturday ("Extended Hours") as part
of the normal Operating Costs for the Building charged to all tenants on a
pro-rata basis, with no additional charge to Tenant for utilities during such
hours; provided, however, that Landlord shall monitor Tenant's actual use of
heating, ventilation and air conditioning service during the Extended Hours and
Tenant shall be provided a credit against Operating Costs (computed annually and
reflected in the Cost Statement) to reflect Tenant's actual use of such services
so that Tenant does not pay in any way for use of such services during Extended
Hours except to the extent requested by Tenant. After-hours HVAC service (i.e.,
between 9:00 p.m. and 7:00 a.m. on Business Days, after 3:00 p.m. Saturday, and
all day Sunday and holidays) shall be available twenty-four (24) hours per day
for an hourly charge on a floor-by-floor basis. Landlord shall make good-faith
efforts to provide such service at the lowest reasonable cost, including using
only fans and outside fresh air for maintaining temperature and spreading costs
between tenants, when appropriate.

        5.3     Interruption. Landlord shall not be liable for damages to either
person or property, nor shall Landlord be deemed to have evicted Tenant, nor
shall there be any abatement of Rent (except to the extent expressly permitted
below), nor shall Tenant be relieved from performance of any covenant on its
part to be performed hereunder by reason of (a) interruption of, or deficiency
in, the provision of Basic Services; (b) breakdown or malfunction of lines,
cables, wires, pipes, equipment or machinery utilized in supplying or permitting
Basic Services or telecommunications; or (c) curtailment or cessation of Basic
Services due to causes or circumstances beyond the reasonable control of
Landlord, including but not limited to (i) strikes, lockouts or other labor
disturbance or labor dispute of any character, (ii) governmental regulation,
moratorium or other governmental action, (iii) inability, despite the exercise
of reasonable diligence, to obtain electricity, water or fuel from the providers
thereof, and (iv) acts of God. Landlord shall use good faith efforts to make
such repairs as may be required to lines, cables, wires, pipes, equipment or
machinery within the Building to provide restoration of Basic Services and,
where the cessation or interruption of Basic Services has occurred due to
circumstances or conditions beyond Real Property boundaries or outside the
Landlord's control, to cause the same to be restored, by application or request
to the provider thereof. Notwithstanding the foregoing, if an interruption or
curtailment of any service to be provided by Landlord under this Article 5 or of
telecommunications service under Section 6.3 occurs by reason of Landlord's
negligence, omission or breach of its obligations hereunder, and (A) the
interruption causes the Premises or a portion thereof to be untenantable, (B)
Tenant ceases to use the Premises or the untenantable portion thereof, and (C)
Tenant has given Landlord notice of such interruption, then, on the fifth (5th)
Business Day following the date on which all of the foregoing conditions are
satisfied Base Rent shall abate (in whole or in part based on the number of
square feet that are untenantable) until the Premises are rendered tenantable.

        5.4     Extra Services. Landlord may provide to Tenant in Landlord's
discretion and at Tenant's cost and expense (and subject to the limitations
hereinafter set forth) the additional services described below ("Extra
Services"). Tenant shall pay Landlord for the cost (including capital costs,
out-of-pocket expenses and the allocated cost of Landlord's employees) of
providing any Extra Services,

                                       18

<PAGE>

together with an administrative fee equal to seven and one-half percent (7.5%)
of such cost, within ten (10) days following presentation of an invoice therefor
by Landlord to Tenant, except that the administrative fee shall not be charged
on the Extra Services described in Subsections 5.4(b) or 5.4(c). The cost
chargeable to Tenant for Extra Services shall constitute additional Rent.

                (a)     Any extra cleaning and janitorial services in excess of
that required for Building Standard Improvements.

                (b)     Additional air conditioning and ventilating capacity
required by reason of any electrical, data processing or other equipment or
facilities or services required to support the same, in excess of that which
would be required for Building Standard Improvements.

                (c)     Heating, ventilation, air conditioning or extra
electrical equipment or service during hours other than Normal Office Hours and
Extended Hours. Landlord shall provide said heating, ventilation and air
conditioning or extra service on a floor-by-floor basis solely upon the prior
request of Tenant given in compliance with the reasonable notice requirements
and procedures that Landlord may establish from time to time.

                (d)     Repair and maintenance for which Tenant is responsible
hereunder.

                (e)     Any Basic Service in amounts determined by Landlord to
exceed the amounts required to be provided under Section 5.1, but only if
Landlord elects to provide such additional or excess service.

                (f)     Any other item described in this Lease as an Extra
Service or which Landlord is not required to provide as part of Basic Services.

        Notwithstanding the foregoing, Landlord shall not refuse to provide
Extra Services reasonably requested by Tenant for heating, ventilation, and air
conditioning if and to the extent the Building systems have available mechanical
and electrical capacity to provide such Extra Services and the provision of same
is not otherwise restricted or prohibited by Laws.

        5.5     Window Coverings. All window coverings shall be provided by
Landlord as Building Standard Improvements. Tenant shall not remove, replace or
install any window coverings, blinds or drapes on any exterior window without
Landlord's prior written approval, which shall not be unreasonably withheld with
respect to interior window coverings that do not affect the exterior appearance
of the Building and do not affect the operation of any Building systems. Tenant
shall be responsible for removal of any such window coverings and restoration of
the affected areas of the Building at its sole cost prior to termination of this
Lease. Tenant acknowledges that breach of this covenant shall directly and
adversely affect the exterior appearance of the Building and the operation of
the heating, ventilation and air conditioning systems.

        5.6     Graphics and Signage.

                (a)     Landlord shall provide (i) at no additional cost to
Tenant, the initial identification of Tenant's name on the directory board in
the main lobby of the Building, including a reasonable number of name listings
for Tenant's departments or employees, and (ii) at Tenant's request and cost or
as a deduction from Tenant's Cash Allowance under Exhibit C of this Lease,
signage in the elevator lobby of each floor within the Premises. All signs,
notices and graphics of every kind or character, visible in or from public
corridors, the Common Areas or the exterior of the Premises shall be subject to
Landlord's prior written approval, which shall not be unreasonably withheld or
delayed. In addition, all signage shall be subject to all City of Seattle and
other applicable governmental requirements.

                (b)     Limited Right To Name the Building, Exterior Sign. So
long as Tenant is leasing, occupying and paying Rent on at least twenty percent
(20%) of the total Net Rentable Area in the Building and Tenant is not in
default under this Lease (which shall mean that no Event of Default has occurred
which has not been cured during the applicable cure period, if any), Tenant
shall have the right

                                       19

<PAGE>

to require the Building to be named "IDX Tower at Fourth & Madison," subject to
the following conditions and limitations: (i) Tenant shall have the right, at
Tenant's sole cost and expense, to place a sign on each of the Building's east
and west exterior facades near the main entrances to the Building lobby, in
accordance with the signage specifications set forth on Exhibit F-l attached
hereto; (ii) Landlord shall not permit any other exterior signs on the Building
other than a Major Tenant Sign (as defined below) and signs for the Building's
retail tenants, without Tenant's prior approval, which shall not be unreasonably
withheld or delayed; and (iii) each Major Tenant Sign shall include the name of
the Building at the top, followed by Tenant's name and then by the names of the
other major tenants, and Tenant's name shall be larger than the name of any
other tenant. Tenant must submit plans for any Building signage to Landlord for
review and approval before Tenant shall be permitted to install any signage on
the exterior of the Building. Prior to the end of the Lease Term or on thirty
(30) days notice if Tenant fails to satisfy the conditions described in the
first sentence of this Section and such failure is not corrected within such
notice period, then Tenant at Tenant's sole cost and expense shall: (A) remove
any signage installed by Tenant on the Building exterior facades, (B) restore
the Building substantially to its condition prior to installation of such
signage, and (C) in the case where Tenant either requests that "IDX" be removed
from the Building's name or Landlord terminates Tenant's naming right by reason
of Tenant's default or Tenant's failure to lease, occupy and pay Rent on at
least twenty percent (20%) of the Total Net Rentable Area in the Building, then
Tenant shall reimburse Landlord for all reasonable expenses and costs incurred
by Landlord in connection with a change in the Building name. All exterior
signage for Tenant shall be provided at Tenant's sole cost and expense and shall
be subject to Landlord's reasonable approval and all City of Seattle and other
applicable governmental requirements. As used herein, the term "Major Tenant
Sign" shall mean any sign(s) designed and installed by Landlord and located at
or near the main entrances to the Building identifying the names of the
Building's largest or most significant tenants, as reasonably determined by
Landlord. Landlord and Tenant acknowledge that the sketch of a Major Tenant Sign
attached hereto as Exhibit F-2 is for representational purposes only to show the
basic concept discussed in clause (iii) above and that Landlord shall have the
sole right to design all Major Tenant Signs. The rights granted herein are
Personal Rights. Any change in the Building name from "IDX Tower at Fourth &
Madison" requested by Tenant shall be subject to Landlord's prior written
approval, which may be withheld in its discretion; provided, however, that with
respect to any requested change in the Building name to reflect the name of a
Qualified Transferee, Landlord shall not unreasonably withhold its approval
unless, in Landlord's judgment, the proposed new name will: (1) have an adverse
effect on the value of the Building or its reputation; (2) be offensive; or (3)
violate the provisions of any other tenant lease in the Building. Landlord and
Tenant will work together to develop a logo incorporating the name "IDX Tower at
Fourth & Madison" or such other similar project name incorporating "IDX" as
Landlord and Tenant may mutually select.

        5.7     Tenant Extra Improvements. Landlord shall administer
construction and installation of all Tenant Extra Improvements in the Premises,
at Tenant's expense, such installation to be made and paid for pursuant to the
provisions of Exhibit C in the same manner as the Tenant Improvements. Landlord
shall not seek the benefits of depreciation deductions or income tax credit
allowances for federal income tax reporting purposes with respect to any Tenant
Extra Improvements for which Tenant has fully reimbursed Landlord under this
Section 5.7. "Tenant Extra Improvements" shall mean the extent to which the
Tenant Improvements in the Premises differ materially from the Building Standard
Improvements, and, in this regard, following Landlord's review of Tenant's
Working Drawings, Landlord shall notify Tenant as to which elements of the
planned improvements it deems to be Tenant Extra Improvements hereunder and
which of such Tenant Extra Improvements Landlord may require Tenant to remove
from the Premises at the end of the Lease Term. Landlord shall notify Tenant no
later than sixty (60) days prior to the end of the Lease Term (or within thirty
(30) days after an earlier termination of this Lease) as to which of the Tenant
Extra Improvements must be so removed by Tenant and, if no such notice is
provided, Landlord shall be deemed to have elected to have all such Tenant Extra
Improvements removed from the Premises. However, Tenant Extra Improvements shall
not include elements of a

                                       20

<PAGE>

standard buildout such as conference and meeting rooms, lunchrooms (not to
include commercial kitchen equipment), coffee stations, the Computer Room
(except for computer equipment and mechanical and electrical equipment located
therein), locker rooms constructed with the initial improvement of the Premises
(not to exceed eight (8) shower stalls and associated locker room space, in a
location mutually acceptable to Landlord and Tenant) and similar improvements.
In instances where this Lease refers to Tenant Extra Improvements as a standard
for the provision of services, maintenance, repair or replacement by Tenant or
Landlord, such reference shall be to the difference in required services,
maintenance, repairs or replacements between the Tenant Improvements as
constructed in the Premises and the Building Standard Improvements, had the
Building Standard Improvements been constructed in the Premises. "Tenant
Improvements" shall mean the improvements installed or to be installed on behalf
of Tenant and approved by Landlord pursuant to Exhibit C. The Cash Allowance (as
defined in Exhibit C) shall not be applied to the cost of any Tenant Extra
Improvements.

        5.8     Peaceful Enjoyment. Tenant shall peacefully have, hold and enjoy
the Premises, subject to the other terms hereof, provided that Tenant pays the
Rent and performs all of Tenant's covenants and agreements herein contained.
This covenant and the other covenants of Landlord contained in this Lease shall
be binding upon Landlord and its successors only with respect to breaches
occurring during its and their respective ownerships of Landlord's interest
hereunder.

        5.9     Tenant Improvements in Hold and Expansion Spaces. Landlord shall
be responsible for installation of Tenant Improvements in the Hold Space and the
First, Second and Third Expansion Spaces. The Tenant Improvements shall be
designed at the same time as the Tenant Improvements for the Minimum Initial
Premises and design and construction thereof shall be governed by Exhibit C
except that Landlord, in its sole discretion, may elect to either (i) complete
construction of the Tenant Improvements in the Hold Space and the First, Second
and Third Expansion Spaces at the same time as it completes construction of the
Tenant Improvements in the Minimum Initial Premises, or (ii) delay construction
of all or any portion of the Tenant Improvements in the Hold Space and the
First, Second and Third Expansion Spaces until such time as Tenant will occupy
such space. Tenant acknowledges that Landlord may lease the space to other
tenants until the date such space is required to be delivered to Tenant and
Tenant shall accept possession of the Hold Space and the First, Second and Third
Expansion Spaces with the Tenant Improvements in their then-current (used)
condition except that Landlord shall clean the space (including the carpets and,
as necessary, the walls) prior to delivery of possession. If Landlord elects to
delay construction of any Tenant improvements in the Hold Space or the First,
Second or Third Expansion Spaces or constructs other Improvements in any such
space for use by prior tenants, then Landlord shall complete the Tenant
Improvements (and remove any nonconforming prior improvements not otherwise
accepted by Tenant) prior to delivering possession of such space to Tenant.
Delivery of the Hold Space and Expansion Space to Tenant shall also to be
subject to the applicable provision of Exhibit C, including the process for
Tenant to inspect the space, prepare punchlists and require correction of
punchlist items.

                                    ARTICLE 6
                               TENANT'S COVENANTS

        6.1     Compliance With Exhibit C. Tenant shall comply with the terms
and conditions and deadlines set forth in Exhibit C with respect to the
construction of the Tenant Improvements in the Premises.

        6.2     Construction and Tenant Improvements. Tenant shall reimburse
Landlord for all costs incurred by a Landlord to construct of install Tenant
Extra Improvements on Tenant's behalf pursuant to Exhibit C. All additions to or
improvements of the Premises, whether of Building Standard Improvements or
Tenant Extra Improvements, shall be and become the property of Landlord upon
installation and shall be surrendered to Landlord upon termination of this Lease
by lapse of time or otherwise, except as otherwise stated herein. Although
Tenant Extra Improvements become the property

                                       21

<PAGE>

of Landlord upon installation, they are intended to be for the convenience of
Tenant and are not intended to be a substitute for Rent or any part thereof.

        6.3     Telecommunications. Tenant shall install and maintain all
required intrabuilding network cable and other communications wires and cables
necessary to serve the Premises from the point of presence in the Building.
Tenant shall obtain any telecommunications services within the Building from
vendors selected by Landlord or vendors selected by Tenant and approved by
Landlord in its reasonable discretion (a "Provider"). In the event that Tenant
desires to obtain telecommunications services from a Provider not selected by
Landlord then Tenant shall submit to Landlord a list of such proposed vendor(s)
together with such other information regarding the vendors as Landlord may
request, including financial information, references from at least two (2)
owners of comparable projects in which the vendor has experience and description
of the vendor's business activities in the Market Area. Landlord shall notify
Tenant within thirty (30) Business Days of receipt of the list if Landlord
approves any of Tenant's proposed vendors, with such approval not to be
unreasonably withheld. Failure to notify Tenant shall be deemed disapproval. If
Landlord approves any telecommunication Provider selected by Tenant, the
Provider must agree in writing to abide by all of Landlord's policies and
procedures for telecommunications vendors and to pay for the use of any space
outside the Premises needed to install the vendor's equipment at the rate
established by Landlord from time to time, provided that (a) the fee shall not
be based on the Provider's revenue or profits unless changes to applicable laws
and regulations would make such a limitation illegal or would require Landlord
to provide similar pricing to other tenants or their telecommunications
providers, and (b) the terms offered to the Provider shall not be materially
less favorable than the terms offered to other providers in the Building (with
the exception of a regulated Incumbent Local Exchange Carrier which is currently
U.S. West). If Tenant desires to utilize the services of a Provider not selected
by Landlord, such Provider must obtain the written consent of Landlord to the
plans and specifications for its lines or equipment within the Building prior to
installation in the Building and must install such lines and equipment in
locations designated by Landlord. Tenant shall obtain any necessary governmental
permits relating to the installation, use or operation of Provider's lines and
equipment. Landlord shall provide Tenant and its Provider and contractors with
reasonable access to portions of the Building outside the Premises to the extent
necessary to install, maintain or replace any telecommunications equipment
serving the Premises. Landlord's consent to a Provider shall not be deemed to
constitute a representation or warranty as to the suitability, capability or
financial strength of any Provider. To the extent the service by a Provider is
interrupted, curtailed or discontinued for any reason whatsoever, Landlord shall
have no obligation or liability in connection therewith. The provisions of this
Section are solely for the benefit of Tenant and Landlord, are not for the
benefit of any third party; and no telephone or telecommunications provider
shall be deemed a third party beneficiary hereof. Tenant acknowledges and agrees
that Landlord has not represented or warranted that Tenant will have unlimited
access to riser space or other space outside the Premises for the purpose of the
Antenna and Landlord shall have no obligation to construct or designate
additional riser space or equipment space to accommodate the Antenna. Tenant
acknowledges that roof and riser space are a finite commodity and that Antenna.
Tenant acknowledges that roof and riser space are a finite commodity and that
Landlord may in its discretion limit Tenant's total use of such space to
accommodate and take into account use of the Building systems and the needs of
other Building tenants; provided that at all times Landlord shall provide for
Tenant's use: (i) four (4) four inch (4") sleeves in the floor slabs in the
Communications Rooms (as defined in Paragraph 10(e) on Exhibit C) on Floors 3
through 18; and (ii) one (1) four inch (4") sleeve in the floor slabs in the
Communications Rooms on Floors 3 through the roof of the Building, but Tenant
shall be responsible for installation, maintenance, repair, replacement and
removal of all conduit, wiring and cabling therein.

        6.4     Taxes on Personal Property and Tenant Extra Improvements. In
addition to, and wholly apart from its obligation to pay Tenant's Proportionate
Share of Operation Costs, Tenant shall be responsible for, and shall pay prior
to delinquency, all taxes or governmental service fees, possessory interest
taxes, fees or charges in lieu of any such taxes, capital levies, or other
charges imposed upon, levied with respect to or assessed against Tenant's
Personal Property (as defined in Section 11.1), on the

                                       22

<PAGE>

value of its Tenant Extra Improvements, on its interest pursuant to this Lease
or on any use made of the Premises or the Common Areas by Tenant in accordance
with this Lease. To the extent that any such taxes are not separately assessed
or billed to Tenant, Tenant shall pay the amount thereof as invoiced to Tenant
by Landlord.

        6.5     Repairs by Tenant. Tenant shall maintain and repair the Premises
and keep the same in good condition, reasonable wear and tear excepted. Tenant's
obligation shall include, without limitation, the obligation to maintain and
repair all walls, floors, ceilings and fixtures and to repair all damage caused
by Tenant or Tenant's employees, agents, contractors, officers, directors,
partners, members, licensees, invitees and guests ("Tenant Parties") to the
Premises or the Building, whatever the scope of the work of maintenance or
repair required. Tenant shall repair all damage caused by removal of Tenant's
movable equipment or furniture or the removal of any Tenant Extra Improvements
or Alterations (as defined in Section 6.7) permitted or required by Landlord,
all as provided in Section 6.13. Any repair or maintenance that Tenant is
required to perform under this Lease shall be performed at Tenant's expense by
Landlord's employees as an "Extra Service" subject to Section 5.4, or at
Tenant's election by contractors selected or reasonably approved by Landlord
(such approval not to be unreasonably withheld or delayed as to contractors
performing work on other than Building systems or structural elements of the
Building). If Tenant fails or refuses to perform such work in a timely and
efficient manner, then Landlord may perform such work for the account of Tenant
as an Extra Service, after first providing at least twenty-four (24) hour prior
notice to Tenant (except in emergencies where no such notice shall be required).
Any work of repair and maintenance performed by or for the account of Tenant by
persons other than Landlord shall be performed at Tenant's risk using
contractors approved by Landlord prior to commencement of the work and in
accordance with procedures Landlord shall from time to time establish. All such
work shall be performed in compliance with all applicable laws, ordinances,
rules and regulations and Tenant shall provide to Landlord copies of all permits
and records of inspection issued or obtained by Tenant in connection therewith
to establish such compliance. Tenant shall not be required to perform any
maintenance or repair: (a) to the Building Components, to the extent such are
located outside of the Premises and any such repairs are not necessitated by
reason of the negligence or wrongful acts of any Tenant Party; (b) the Common
Areas, to the extent any such repairs are not necessitated by reason of
negligence or wrongful acts of any Tenant Party; or (c) required solely by
reason of the negligence or wrongful acts of Landlord or its employees, agents,
contractors, officers, directors, partners, licensees, invitees and guests,
Landlord's affiliates or Landlord's members ("Landlord Parties"). Tenant shall
promptly notify Landlord of any needed repairs in the Premises or to the
Building Components.

        6.6     Waste. Tenant shall not commit or allow Tenant Parties to commit
any waste or damage in any portion of the Premises or the Building.

        6.7     Alterations, Additions, Improvements. Tenant shall not make or
allow to be made any alterations, additions or improvements in or to the
Premises (collectively, "Alterations") without obtaining the prior written
consent of Landlord, except where set forth to the contrary herein. Landlord's
consent shall not be unreasonably withheld or delayed with respect to proposed
Alterations that (a) comply with all applicable laws, ordinances, rules and
regulations; (b) are compatible with the Building, its architecture and its
mechanical, electrical, HVAC and life safety systems; (c) do not interfere with
the use and occupancy of any other portion of the Building by any other tenant
or their invitees; (d) do not affect the structural portions of the Building;
(e) are designed to be consistent with a standard office buildout; (f) do not
reduce the value of the Premises or materially increase the cost to Landlord of
reletting the Premises; and (g) do not and shall not, whether alone or taken
together with other improvements, require the construction of any other
improvements or alterations within the Building. In determining whether to
consent to the proposed Alterations, Landlord shall have the right to review
plans and specifications for proposed Alterations (in the manner and detail as
set forth in Section 5 of Exhibit C). construction means and methods, the
identity of any contractor or subcontractor to be employed on the work for
Alterations,

                                       23

<PAGE>

and the time for performance of such work. Notwithstanding the foregoing,
Alterations which do not affect any Building systems or structural elements of
the Building and involve only painting, floor or wall covering replacement or
installation or relocation of nonload bearing interior walls, shall not require
Landlord's consent but at least thirty (30) days prior written notice thereof
shall be delivered to Landlord. Tenant shall supply to Landlord any documents
and information requested by Landlord in connection with any Alterations to the
Premises. Landlord may hire outside consultants to review such documents and
information and Tenant shall reimburse Landlord for the cost thereof as well as
Landlord's internal costs as an Extra Service subject to Section 5.4. All
Alterations permitted hereunder shall be made and performed by Tenant using
contractors and subcontractors approved by Landlord (which shall not be
unreasonably withheld except that contractors involved in any work affecting any
Building systems or structural elements of the Building shall be designated by
Landlord in its sole discretion) or, at Tenant's election, may be performed by
Landlord or by contractors selected by Landlord, without cost or expense to
Landlord and, if performed by Landlord or its contractors, as an Extra Service.
Upon completion of any Alterations, Tenant shall provide Landlord, at Tenant's
expense, with a complete set of "as built" plans on mylar and specifications
reflecting the actual conditions of the Alterations as constructed in the
Premises, together with a copy of such plans on diskette in the AutoCAD format
or such other format as may then be in common use for computer assisted design
purposes. The obligations of the parties with respect to removal of Alterations
and restoration of the Premises shall be controlled by Section 6.13.

        At the time of giving its approval to any Alterations, Landlord shall
inform Tenant as to which elements or components of such Alterations Landlord
may require Tenant to remove from the Premises at the end of the Lease Term,
provided that Landlord cannot require Tenant to remove Alterations that
constitute Building Standard Improvements, and Landlord shall further inform
Tenant of any changes in its requirements arising from actual changes in the
Alterations work, following Landlord's receipt and review of as-built drawings
relating thereto. Landlord shall notify Tenant no later than sixty (60) days
prior to the end of the Lease Term (or within thirty (30) days after an earlier
termination of this Lease) as to which of such elements or components must be so
removed by Tenant and, if no such notice is provided, Landlord shall be deemed
to have elected to have all such elements and components removed by Tenant.

        6.8     Liens. Tenant shall keep the Premises and the Building free from
any liens arising out of any (a) work performed or material furnished to or for
the Premises, and (b) obligations incurred by or for Tenant or any person
claiming through or under Tenant. Tenant shall, within ten (10) days following
the imposition of any such lien, cause such lien to be released of record by
payment or posting of a bond fully satisfactory to Landlord in form and
substance and in compliance with RCW 60.04. Landlord shall have the right at all
times to post and keep posted on the Premises any notices permitted or required
by law, or that Landlord shall deem proper for the protection of Landlord, the
Premises, the Building and any other party having an interest therein, from
mechanics', materialmen's and other liens. Landlord may cause such liens to be
released by any means it deems proper, including, without limitation, payment of
any such lien, at Tenant's sole cost and expense. All costs and expenses
incurred by Landlord in causing such liens to be released shall be repaid by
Tenant to Landlord immediately upon demand, together with an administrative fee
equal to twenty percent (20%) of such costs and expenses. In addition to all
other requirements contained in this Lease, Tenant shall give Landlord at least
ten (10) Business Days prior written notice before commencement of any
construction on the Premises. Landlord hereby waives all statutory liens in the
nature of a landlord's lien on any personal property owned by Tenant and located
in the Premises.

        6.9     Compliance With Laws and Insurance Standards.

                (a)     Tenant shall comply with all federal, state and local
laws, ordinances, orders, rules, regulations and policies (collectively,
"Laws"), now or hereafter in force, as amended from time to time, in any way
related to the use, condition or occupancy of the Premises, regardless of when
such Laws become effective, including, without limitation, all applicable
Hazardous Materials Laws (as

                                       24

<PAGE>

defined in Section 7.2(a)), the Americans with Disabilities Act of 1990, as
amended and any laws prohibiting discrimination against, or segregation of, any
person or group of persons on account of race, color creed, religion, sex,
marital status, national origin or ancestry. If and to the extent such
compliance is required under the Laws, Tenant shall have the right to reasonably
contest any attempted enforcement of the Laws, provided that Tenant shall not
allow any fines, penalties, orders or injunctions to be issued in connection
with any such disputed matters. Tenant shall also comply with the terms of any
transportation management program or similar programs affecting the Building and
required by any governmental authority. Tenant shall immediately deliver to
Landlord a copy of any notices received from any governmental agency in
connection with the Premises. It is the intention of Tenant and Landlord that
the obligations of Tenant under this Section 6.9 shall apply irrespective of the
scope of work required to achieve such compliance. Tenant shall not use or
occupy the Premises in any manner that creates, requires or causes imposition of
any requirement by any governmental authority for structural or other upgrading
of or improvement to the Building.

                (b)     Tenant shall not occupy or use, or permit any portion of
the Premises to be occupied or used, for any business or purpose that is
disreputable or constitutes a fire hazard. Tenant shall not permit anything to
be done that would increase the rate of fire or other insurance coverage on the
Building and/or its contents. If Tenant does or permits anything to be done that
increases the cost of any insurance policy carried by Landlord, then Tenant, at
Landlord's option, shall not be in default under this Lease, but shall reimburse
Landlord, upon demand, for any such additional premiums as an Extra Service.
Landlord shall use good faith efforts to advise Tenant at the time of Landlord's
review of the Working Drawings (and any Alterations) whether Tenant's proposed
design (or Alterations) is likely to result in additional insurance premiums.

        6.10    Entry for Repairs, Inspection, Posting Notices, Etc. After
reasonable notice (which shall mean at least 24 hour prior notice, except in
emergencies or circumstances where Landlord needs to access communications
closets through a Communications Room where no such notice shall be required),
Landlord or Landlord Parties shall have the right to enter the Premises to
inspect the same, to clean, to perform such work as may be permitted or required
hereunder, to make repairs to or alterations of the Building or other tenant
spaces therein, to deal with emergencies, to post such notices as may be
permitted or required by law to prevent the perfection of liens against
Landlord's interest in the Building or to exhibit the Premises to prospective
tenants, purchasers, encumbrancers or others, or for any other purpose as
Landlord may deem necessary or desirable. Landlord shall make reasonable efforts
not to unreasonably interfere with Tenant's business operations and, in the case
of secured access designated by Tenant within the Premises, Landlord's access
shall be coordinated with a Tenant representative (except in emergencies). So
long as Tenant is not in default hereunder, Landlord shall not exhibit the
Premises to prospective tenants except during the last twelve (12) months of the
Lease Term. In no event shall Tenant be entitled to any abatement of Rent by
reason of the exercise of any such right of entry.

        6.11    No Nuisance. Tenant shall not create any nuisance, or interfere
with, annoy, endanger or disturb any other tenant or Landlord in its operation
of the Building. Tenant shall not place any loads upon the floor, walls or
ceiling of the Premises that endanger the structure nor place any harmful
liquids or Hazardous Material (as defined in Section 7.2) in the drainage system
of the Building. Tenant shall not permit any vibration, noise or odor to escape
from the Premises and shall not do or permit anything to be done within the
Premises which would adversely affect the quality of the air in the Building.
Landlord shall use good faith efforts to include this provision in other tenant
leases in the Building which are entered into after the date of this Lease.

        6.12    Rules and Regulations. Tenant shall comply with the rules and
regulations for the Building attached as Exhibit D and such amendments or
supplements thereto as Landlord may adopt from time to time with at least ten
(10) Business Days prior notice to Tenant. Landlord shall not be liable to
Tenant for or in connection with the failure of any other tenant of the Building
to comply with any rules and regulations applicable to such other tenant under
its lease, but Landlord shall use good faith efforts to

                                       25

<PAGE>

apply such rules and regulations on a uniform basis among all tenants. In the
event of any conflict between such rules and regulations and the terms of this
Lease, the terms of this Lease shall control.

        6.13    Surrender of Premises On Termination. On expiration of the Term,
Tenant shall quit and surrender the Premises to Landlord, broom clean, in good
order, condition and repair as required by this Lease (subject to ordinary wear
and tear), with all of Tenant's movable equipment, furniture, trade fixtures and
other personal property removed therefrom. In addition, Tenant shall, within ten
(10) Business Days following the Expiration Date, remove all telecommunications
and computer networking wiring and cabling serving the Premises (except cabling
within partition walls) from the Building, unless Landlord requires such
materials to be surrendered to Landlord, and during such ten (10) Business Day
period Tenant shall pay to Landlord Rent for the Premises based on the same
rates paid on the day preceding the Expiration Date. All Alterations and Tenant
Improvements that are to remain at the Premises shall be surrendered with the
Premises in good condition and repair, reasonable wear and tear (but only to an
extent consistent with the premises remaining in good condition and repair) and
casualty damage excepted. Any property of Tenant not removed from the Premises
shall be deemed, at Landlord's option, to be abandoned by Tenant and Landlord
may store such property in Tenant's name at Tenant's expense, and/or dispose of
the same in any manner permitted by law. If Landlord desires to have the
Premises, or any part or parts thereof, restored to a condition that existed
prior to installation of any Tenant Extra Improvements or to the condition prior
to making any Alterations (other than Alterations which are Building Standard
Improvements), Landlord may so notify Tenant in writing at least sixty (60) days
prior to the regularly scheduled Expiration Date (or if this Lease is sooner
terminated, within ten (10) days after the date of such termination); and upon
receipt of such notice, Tenant shall, at Tenant's sole cost and expense, so
restore the Premises, or such part or parts thereof, within Ten (10) Business
Days after the regularly scheduled Expiration Date (or if this Lease is sooner
terminated, within ten (10) days after receipt of notice); provided, however,
Tenant's restoration obligation shall be limited to restoring elements of the
Building's structure and Building systems to their original shell and core
condition. Tenant shall repair at its sole cost and expense, all damage caused
to the Premises or the Building by removal of Tenant's movable equipment or
furniture and such Tenant Extra Improvements and Alterations as Tenant shall be
allowed or required to remove from the Premises by Landlord. If the Premises are
not surrendered as of the end of the Term (or the end of the Permitted Holdover
Term as defined in Section 14.2 below, if applicable) in the manner and
condition herein specified (including any restoration required hereunder),
Tenant shall indemnify, defend, protect and hold Landlord and Landlord Parties
harmless from and against any and all damages resulting from or caused by
Tenant's delay or failure in so surrendering the Premises, including, without
limitation, any claims made by any succeeding tenant due to such delay or
failure. Tenant acknowledges that Landlord shall be attempting to lease the
Premises with any such lease to be effective upon expiration of the Term, and
failure to surrender the Premises could cause Landlord to incur liability to
such successor tenant(s) for which Tenant shall be responsible (except as
limited below). Landlord agrees to provide Tenant with written notice of any
such liability (including, by way of example but not limitation, delay in
delivery penalties) for which Landlord may be liable to tenants under signed
leases, within a reasonable time following full execution thereof, which notice
shall specify the potential level of damages and the circumstances under which
such damages could be incurred, and Landlord shall use good faith efforts to
mitigate all such damages. Notwithstanding anything to the contrary in this
Section 6.13 or this Lease, Tenant's liability to Landlord for consequential
damages incurred by Landlord from third-party claims arising by reason of
Tenant's failure to surrender the Premises when and as required hereunder shall
not exceed the liabilities disclosed to Tenant by Landlord under the preceding
sentence (but no such limitation shall apply to Landlord's actual damages or
costs).

        6.14    Corporate Authority. If Tenant is a corporation or limited
liability company or partnership, or if Tenant is a partnership on whose behalf
a partner which is a corporation or limited liability company executes this
Lease, then in any such case, each individual executing this Lease on behalf of
such corporation, limited liability company or partnership represents and
warrants that he or she

                                       26

<PAGE>

is duly authorized to execute and deliver this Lease on behalf of said
corporation, limited liability company and/or partnership, as the case may be.

        6.15    Utilities. Tenant shall not obtain any electrical or other
utility services from vendors other than those selected by Landlord or approved
by Landlord in writing in accordance with the provisions of Section 6.3.

                                    ARTICLE 7
                               HAZARDOUS MATERIALS

        7.1     Prohibition and Indemnity With Respect to Hazardous Materials.
Except as stated below, Tenant shall not cause or permit any Hazardous Material
to be brought upon, kept or used in or about the Premises by Tenant or Tenant
Parties without the prior written consent of Landlord. Tenant may, at Tenant's
risk, bring, store and use reasonable quantities of Permitted Hazardous
Materials in the Premises for their intended use. If Tenant violates this
provision, or if contamination of the Premises or the Real Property by Hazardous
Material occurs for which Tenant or any Tenant Party is responsible, or if
Tenant's activities or those of Tenant Parties result in or cause a Hazardous
Materials Claim, then Tenant shall indemnify, defend, protect and hold Landlord
and Landlord Parties harmless from and against any and all claims, judgments,
damages, penalties, fines, costs, expenses, liabilities or losses (including,
without limitation, diminution in value of the Premises or the Building or the
Real Property, damages for the loss or restriction on use of rentable or usable
space or of any amenity of the Premises or the Building, damages arising from
any adverse impact on marketing of space, and sums paid in settlement of claims,
attorneys' fees, consultants' fees and experts' fees) (collectively, "Claims")
which arise during or after the Term as a result of such contamination. This
indemnification of Landlord by Tenant includes, without limitation, costs
incurred in connection with any investigation of site conditions or any cleanup,
remedial, removal or restoration work required by any federal, state or local
government agency or political subdivision because of any Hazardous Material
present in the soil or ground water on or under the Premises. The foregoing
indemnity shall survive the expiration or earlier termination of this Lease.
Tenant acknowledges, confirms and agrees that this provision and the indemnities
herein apply to any Claims arising out of or relating to the diesel fuel tank
permitted under Section 14.28 below.

        7.2     Definitions. The following terms shall have the meanings given
below for purposes of this Lease.

                (a)     "Hazardous Material" shall mean any (a) diesel fuel,
oil, flammable substances, explosives, radioactive materials, hazardous wastes
or substances, toxic wastes or substances or any other wastes, materials or
pollutants which (i) pose a hazard to the Building or to persons on or about the
Building or (ii) cause the Building to be in violation of any Hazardous
Materials Laws; (b) asbestos in any form, urea formaldehyde foam insulation,
transformers or other equipment that contain dielectric fluid containing levels
of polychlorinated biphenyls, or radon gas; (c) chemical, material or substance
define as or included in the definition of "hazardous substances," "hazardous
wastes," "hazardous materials," "extremely hazardous waste," "restricted
hazardous waste," "moderate risk waste," or "toxic substances" or words of
similar import under any applicable local, state or federal law or under the
regulations adopted or publications promulgated pursuant thereto, including, but
not limited to, the Comprehensive Environmental Response, Compensation and
Liability Act of 1980, as amended, 42 U.S.C. Section 9601, et seq.; the
Hazardous Materials Transportation Act, as amended, 49 U.S.C. Section 1801, et
seq.; the Federal Water Pollution Control Act, as amended, 33 U.S.C. Section
1251, et seq.; and the Model Toxics Control Act, as amended, RCW 70.105D; (d)
chemicals, materials or substances, exposure to which is prohibited, limited or
regulated by any governmental authority or may or could pose a hazard to the
health and safety of the occupants of the Building or the owners and/or
occupants of property adjacent to or surrounding the Building, or any other
person coming upon the Building or adjacent property; and (e) other chemicals,
materials or substances which may or could pose a hazard to the environment.

                                       27

<PAGE>

                (b)     "Hazardous Materials Claims" shall mean any enforcement,
cleanup, removal, remedial or other governmental or regulatory actions,
agreements or orders instituted pursuant to any Hazardous Materials Laws; and
any claims made by any third party against Landlord, Tenant or the Building
relating to damage, contribution, cost recovery compensation, loss or injury
resulting from the presence, release or discharge of any Hazardous Materials.
Tenant shall promptly cure and satisfy all Hazardous Materials Claims arising
out of or by reason of the activities or business of Tenant, Tenant Parties or
any party claiming by or through Tenant and its employees, agents, contractors,
officers, directors, partners, licensees, invitees and guests.

                (c)     "Hazardous Materials Laws" shall mean any federal, state
or local laws, ordinances, orders, rules, regulations or policies, now or
hereafter in force, as amended from time to time, in any way relating to the
environment, health and safety, and Hazardous Materials (including, without
limitation, the use, handling, transportation, production, disposal, discharge
or storage thereof) or to industrial hygiene or the environmental conditions on,
under or about the Building and Real Property, including, without limitation,
soil, groundwater and indoor and ambient air conditioning.

                (d)     "Permitted Hazardous Materials" shall mean (i) diesel
fuel to power the Generator as permitted under Section 14.28 below, and (ii)
Hazardous Materials which are contained in ordinary office supplies of a type
and in quantities typically used in the ordinary course of business within
executive offices of similar size and location, but only if and to the extent
that such supplies are transported, stored and used in full compliance with all
Hazardous Materials Laws and their packaging instructions and otherwise in a
safe and prudent manner. Diesel fuel or other Hazardous Materials which are
contained in ordinary office supplies but which are transported, stored and used
in a manner which is not in full compliance with all Hazardous Material Laws and
their packaging instructions or which is not in any respect safe and prudent
shall not be deemed to be "Permitted Hazardous Materials" for the purposes of
this Lease.

        7.3     Landlord's Representations and Undertakings. Landlord hereby
discloses, covenants and represents to Tenant as follows:

                (a)     Asbestos containing material was removed from
improvements located on a portion of the Real Property prior to demolition of
such improvements and, to the best of Landlord's knowledge, was properly
disposed of by a licensed asbestos contractor;

                (b)     Petroleum-based residue was detected in some of the
soils beneath the surface of a portion of the Real Property, which soils shall
be removed, remediated and/or properly disposed of during the excavation of the
Real Property;

                (c)     Landlord shall construct the Building without knowingly
incorporating therein any Hazardous Materials (other than Hazardous Materials
which are used in the ordinary course of construction, maintenance or operation
of similar buildings, to the extent transported, stored and used in full
compliance with all Hazardous Materials Laws); and

                (d)     Landlord shall use good faith efforts to include a
provision similar to Section 7.1 in all other tenant leases in the Building
entered into after the date of this Lease.

                                    ARTICLE 8
                             ASSIGNMENT OR SUBLEASE.

        8.1     Consent Required. Tenant shall not assign this Lease in whole or
in part, sublease all or any part of the Premises or otherwise sell, transfer or
hypothecate this Lease or grant any right to use or occupy the Premises to
another party (all of such events shall be referred to herein as a "Transfer"
and any such assignee, purchaser, subtenant or other transferee shall be a
"Transferee" for purposes of this Article) without Landlord's prior written
consent, which consent shall not be unreasonably withheld or delayed. If Tenant
intends to enter into a Transfer, Tenant shall give Landlord at least thirty
(30) days

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<PAGE>

written notice of such intent. Tenant's notice shall set forth the effective
date of such Transfer and shall be accompanied by an exact copy of the proposed
agreements between Tenant and the proposed Transferee and complete financial
information regarding the proposed Transferee. If requested by Landlord, Tenant
shall provide Landlord with (a) any additional information or documents
reasonably requested by Landlord relating to the proposed Transfer or the
Transferee, and (b) an opportunity to meet and interview the proposed
Transferee. This Lease may not be transferred by operation of law. All of the
following shall constitute Transfers subject to this Article 8: (x) if Tenant is
a corporation that is not publicly traded on a national exchange, then any
transfer of this Lease by merger, consolidation or liquidation, or any direct,
indirect or cumulative change in the ownership of, or power to vote the majority
of Tenant's outstanding voting stock, shall constitute a Tansfer; (y) if Tenant
is a partnership, then a change in general partners in, or voting or
decision-making control of, the partnership shall constitute a Transfer; and (z)
if Tenant is a limited liability company, then a change in members in, or voting
or decision-making control of, the limited liability company shall constitute a
Transfer. Any change in ownership of Tenant's parent of the type described in
(x), (y) or (z) above shall also constitute a Transfer subject to this Article
8. These provisions shall apply to any single transaction or any series of
related or unrelated transactions having the effect described.

        8.2     Transfers to Qualified Transferees, Joint Ventures.
Notwithstanding anything herein to the contrary, Landlord shall consent to any
proposed Transfer by Tenant under this Article 8 to: (i) any of the following (a
"Qualified Transferee"): (a) an entity which is a wholly-owned subsidiary of
Tenant; (b) an entity with which or into which Tenant may merge, whether or not
Tenant is the survivor of such merger; or (c) any entity that is controlled by,
controls or is under common control with Tenant (provided, however, that in all
cases under clauses (a) through (c), such entity shall have a creditworthiness
which is equal to or greater than that of Tenant at the time of the proposed
Transfer, as determined by Landlord in its reasonable discretion); or (ii) a
sublease of one floor or less of the Premises to any partnership or joint
venture between Tenant and a business partner of Tenant, in which Tenant owns a
significant and material interest in such entity (a "Qualified Joint Venture")
and the subleased space is not demised separately from the balance of the
Premises. "Control" for purposes of this Article 8 shall mean ownership of a
majority voting interest in any such entity. In the event Tenant desires to
effect any transfer pursuant to this Section 8.2, Tenant must provide Landlord
with at least thirty (30) days' prior written notice of such proposed Transfer,
together with such evidence as Landlord may reasonably request to establish that
the proposed Transferee is a Qualified Transferee or a Qualified Joint Venture
as defined herein.

        8.3     Landlord's Options. If Tenant proposes a Transfer (other than a
Transfer to a Qualified Transferee or a permitted Transfer to a Qualified Joint
Venture) then Landlord may elect to: (a) terminate this Lease as to the Affected
Space (as hereinafter defined) as of the date specified by Tenant in its notice
under Section 8.1, if the proposed Transfer is (1) for the remaining,
then-existing Term of this Lease, or (2) to an existing tenant or occupant of
the Building and for a term longer than three (3) years (including extension
rights); (b) terminate this Lease as to the Total Affected Space (as hereinafter
defined) as of the date specified by Tenant in its notice under Section 8.1 if
the Total Affected Space exceeds:(1) the equivalent of one (1) floor of Net
Rentable Area until Tenant has occupied and commenced paying Rent on the First
Expansion Space; or (2) the equivalent of two (2) floors of Net Rentable Area at
any time thereafter; (c) permit Tenant to complete the Transfer on the terms set
forth in such notice, subject, however, to such reasonable conditions as
Landlord may require and to the balance of this Article 8; or (d) deny the
request to Transfer the Lease so long as Landlord's denial is not unreasonable.
Landlord shall have a period of twenty (20) days following any interview and
receipt of such additional information as Landlord reasonably requests (or
thirty (30) days from the date of Tenant's original notice if Landlord does not
request additional information or an interview) within which to respond to
Tenant's request. If Landlord fails to notify Tenant in writing of such election
within said period, Landlord shall be deemed to have waived options (a) and (b)
above and to have denied consent to the proposed Transfer. In deciding whether
to consent to a proposed Transfer, Landlord may consider any factors that
Landlord deems

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<PAGE>

relevant, including but not limited to the following: (i) whether the use of the
Premises by the proposed Transferee would be a Permitted Use; (ii) whether the
proposed Transferee is of sound financial condition and has sufficient financial
resources and business expertise, as determined by Landlord, to perform under
this Lease; (iii) whether the proposed Transferee's use involves the storage,
use, treatment or disposal of any Hazardous Materials; (iv) whether the proposed
use or the proposed Transferee could cause the violation of any covenant or
agreement of Landlord to any third party or sublessee or permit any other tenant
to terminate its lease; (v) whether there is other comparable space available
for lease in the Building in the same elevator bank in which Tenant desires to
sublease space; and (vi) whether the terms of the proposed Transfer are
reasonable; however, Landlord may not consider as a factor whether the proposed
Transferee leases or occupies any other space in the Building or whether there
is other comparable space available for lease in the Building in another
elevator bank. Failure by Landlord to approve a proposed Transfer shall not
cause a termination of this Lease, and the sole remedy of Tenant shall be an
action for injunctive or declaratory relief. As used herein, the term "Affected
Space" shall mean all Net Rentable Area covered by a particular proposed or
approved Transfer, and the term "Total Affected Space" shall mean the sum of the
Affected Space in the proposed Transfer and all Affected Space in all prior
Transfers approved by Landlord hereunder (to the extent such Transfers have not
terminated or expired by the date of Tenant's notice under Section 8.1). In the
event Landlord exercises its option under clause (b), then at Landlord's
election, Tenant shall either assign its interest in and under all prior
Transfers to Landlord or terminate such prior Transfers and direct the subtenant
or assignee to enter into a new direct lease with Landlord on substantially the
same terms of such prior Transfer.

        Notwithstanding the foregoing, if Tenant proposes a Transfer and
Landlord exercises either option (a) or option (b) above, Tenant may withdraw
its request by written notice to Landlord given within five (5) Business Days
after Landlord's delivery of its notice of recapture hereunder, in which event
such Transfer shall not occur, neither option (a) or option (b) shall become
effective, and this Lease shall remain in full force and effect as to the space
subject to the proposed Transfer.

        8.4     Minimum Rental; Division of Excess Rent. Any rent or other
consideration realized by Tenant in connection with or as a result of any
Transfer (other than a Transfer to a Qualified Transferee or a Qualified Joint
Venture) in excess of the Base Rent payable hereunder, after first deducting all
reasonable and customary costs actually incurred by Tenant to effect such
Transfer (such as tenant improvements, brokerage fees, advertising costs and the
like) shall be divided equally between Landlord and Tenant and Landlord's share
shall be paid promptly after receipt thereof to Landlord as Rent hereunder;
provided, however, that Landlord shall be entitled to receive the total rent and
other consideration if Tenant is in default of any obligation under this Lease
until such default is cured.

        8.5     Tenant Not Released. No Transfer by Tenant shall relieve Tenant
of any obligation under this Lease unless otherwise agreed by Landlord in
writing. Any Transfer that conflicts with the provisions hereof shall be void.
No consent by Landlord to any Transfer shall constitute a consent to any other
Transfer nor shall it constitute a waiver of any of the provisions of this
Article 8 as they apply to any such future Transfers. Following any Transfer,
the obligations for which the Tenant or subsequent transferor remains liable
under this Lease shall include all obligations under this Lease in effect at the
time of the Transfer and any subsequent amendments to this Lease executed by
Landlord and the Transferee (other than amendments that will have a material,
adverse economic effect on Tenant and which have not been consented to in
writing by Tenant). Tenant covenants and agrees that the documentation
evidencing any Transfer involving an assignment shall not restrict or limit the
Transferee's right or ability to amend this Lease.

        8.6     Written Agreement. Any Transfer must be in writing and the
Transferee shall assume in writing, for the express benefit of Landlord, all of
the obligations of Tenant under this Lease with respect to the space
transferred, provided that no such assumption shall be deemed a novation or
other release of the transferor unless otherwise agreed in writing. Tenant shall
provide to Landlord true and correct copies of the executed Transfer documents
and any amendment thereto during the Term.

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<PAGE>

        8.7     No Transfer Period. Except with respect to Qualified Transferees
and Qualified Joint Ventures pursuant to Section 8.2 above, Tenant shall not
enter into any Transfer of this Lease until the earlier of (a) two (2) years
after the Term Commencement Date, or (b) the date on which the Building is
eighty-five percent (85%) leased and occupied.

        8.8     Conditions. Landlord may condition its consent to any proposed
Transfer on such conditions as Landlord may reasonably require including,
construction of any improvements deemed necessary or appropriate by Landlord by
reason of the Transfer. Any improvements, additions, or alterations to the
Building that are required by any law, ordinance, rule or regulation, or are
deemed necessary or appropriate by Landlord as a result of any Transfer
hereunder, shall be installed and provided by Tenant in accordance with Section
6.7, without cost or expense to Landlord.

        8.9     Expenses. Landlord may hire outside consultants to review the
Transfer documents and information. Tenant shall reimburse Landlord for all
reasonable costs and expenses incurred by Landlord in connection with any
request for consent under this Article 8 (even if consent is denied or the
request is withdrawn) and such reimbursement shall include the allocated cost of
Landlord's or its management company's staff plus all out-of-pocket expenses,
including reasonable attorneys' fees, on demand.

        8.10    No Restriction on Landlord. Without liability to Tenant,
Landlord shall have the right to offer and to lease space in the Building, or in
any other property, to any party, including without limitation parties with whom
Tenant is negotiating, or with whom Tenant desires to negotiate, a Transfer.

        8.11    No Leasehold Financing. Tenant shall not encumber, pledge or
mortgage the whole or any part of the Premises or this Lease, nor shall this
Lease or any interest thereunder be assignable or transferable by operation of
law or by any process or proceeding of any court or otherwise without the prior
written consent of Landlord, which consent may be given or withheld in
Landlord's sole discretion.

                                    ARTICLE 9
                     CONDITION AND OPERATION OF THE BUILDING

        9.1     Limited Warranties. Landlord's entire obligation with respect to
the condition of the Premises, its suitability for Tenant's uses and the
improvements to be installed therein shall be as stated in Section 1.1(a),
Section 5.9 or Exhibit C. Landlord shall have no other obligation of any kind or
character, express or implied, with respect to the condition of the Premises, or
the Building or the suitability thereof for Tenant's purposes, and Tenant
acknowledges that it has neither received nor relied upon any representation or
warranty made by or on behalf of Landlord with respect to such matters, except
as expressly set forth herein. Notwithstanding the foregoing, Landlord hereby
represents and warrants to Tenant, as of the date of this Lease, as follows.

                (a)     The Building is or shall be designed to comply with all
applicable Laws, including the Americans With Disabilities Act of 1990, as such
Laws are in effect as of the date of issuance of the building permit for the
Building; and

                (b)     Except as otherwise disclosed to Tenant in this Lease,
Landlord is not aware of any adverse environmental conditions, affecting, or the
presence of any Hazardous Materials (other than those permitted under this
Lease) on, the Real Property.

        9.2     Building Alterations. Except to the extent limited by Section
1.1(a), Landlord may, in its sole discretion, at any time and from time to time:
(a) make alterations, structural modifications, seismic modifications or
additions to the Building (including building additional stories), except
modifications that cover any external window in the Premises other than
modifications required by any Laws; (b) change, add to, eliminate or reduce the
extent, size, shape or configuration of any aspect of or improvement (including
the Building) located on the Real Property or its operations; (c) change the
arrangement, character, use or location of corridors, stairs, toilets,
mechanical, plumbing, electrical or other operating systems or any other parts
of the Building; (d) change the name, number or designation by

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<PAGE>

which the Building is commonly known (subject to Tenant's rights under Section
5.6); or (e) alter or relocate any portion of the Common Areas or any other
common facility. None of the foregoing acts shall be deemed an actual or
constructive eviction of Tenant, entitle Tenant to any reduction of Rent or
result in any liability of Landlord to Tenant. Landlord shall have the exclusive
rights to the airspace above and around, and the subsurface below, the Premises
and the Building, including, without limitation, the exclusive right to use all
exterior walls, roofs and other portions of the Building for signs, notices and
other promotional purposes. Landlord shall have the sole and exclusive right to
possession and control of the Common Areas and all other areas of the Building
and Real Property outside the Premises.

                                   ARTICLE 10
                                  LENDER RIGHTS

        10.1    Subordination. This Lease is subject and subordinate to each
ground or land lease which may now or hereafter cover all or any portion of the
Building or Real Property and to each mortgage, deed of trust or other financing
or security agreement which may now or hereafter encumber all or any portion of
the Building or Real Property and to all renewals, modifications,
consolidations, replacements and extensions thereof (collectively, the "Senior
Instruments"), subject to the terms and conditions set forth herein. The
subordination shall be self-operative and no further instrument of subordination
need be required by any lessor or any holder or beneficiary of any Senior
Instrument (collectively, the "Senior Parties") if the Senior Party executes and
delivers to Tenant for its execution a recordable subordination, nondisturbance
and attornment agreement ("SNDA") which provides that Tenant's rights under this
Lease shall not be disturbed so long as Tenant is not in default hereunder
beyond any applicable cure period, but contains provisions consistent with those
set forth in Clauses (a) through (e) in Section 10.2. Tenant, upon Landlord's or
any Senior Party's request, shall execute promptly any such SNDA or similar
instrument required by any Senior Party (which is consistent with the foregoing
requirements and may contain such other terms and provisions as are commercially
reasonable and do not materially, adversely affect Tenant's rights under this
Lease) to confirm such subordination and shall deliver the same to such party
within ten (10) days following receipt thereof. Promptly after Tenant's receipt
of any such similar instrument, Tenant shall notify Landlord in writing as to
any reasonable objections Tenant may have therewith. The SNDA shall not be
recorded in the real property records unless agreed to by Landlord and such
Senior Party.

        10.2    Attornment. In the event of the enforcement by any Senior Party
under any Senior Instrument provided for by law or by such Senior Instrument,
Tenant shall attorn to any person or party succeeding to the interest of
Landlord as a result of such enforcement including any purchaser of all or any
portion of the Building or the Real Property at a public or private foreclosure
sale or exercise of a power of sale under such mortgage or deed of trust
(collectively, "Successor") and shall recognize such Successor as the Landlord
under this Lease without change in the terms or other provisions of this Lease;
provided, however, that such Successor shall not be: (a) subject to any credits
(other than the Rent Credit and the Tax Credit), offsets, defenses or claims
that Tenant may have against any prior landlord, except that with respect to
defaults of the landlord which are continuing ("Continuing Defaults") on the
date on which any such Senior Party takes title to or possession of the Building
and Real Property (the "Transfer Date"), Tenant shall have the same rights
against Senior Party as it would have had against the prior landlord to the
extent of any damages occurring after the Transfer Date, but in any event
limited to Senior Party's interest in the Building and Real Property; (b) bound
by any payment of Rent for more than one (1) month in advance; (c) bound by any
amendment or modification of this Lease, or any Transfer by Tenant, made after
the applicable Senior Instrument is placed against the Building or the Real
Property (and Tenant has been given notice thereof) without the written consent
of such Senior Party if and to the extent such consent is required under the
Senior Instrument and provided that Senior Party is subject to the same
standards and time periods for approval of a Transfer as are provided to
Landlord under Article 8, except that with respect to Transfers other than to a
Qualified Transferee or a Qualified Joint Venture, Senior Party's time period
for approval shall not commence until Landlord's conditional

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<PAGE>

approval of such Transfer has been obtained; (d) liable for any act, omission,
neglect or default of any prior landlord, except that, with respect to
Continuing Defaults, Tenant shall have the same rights against Senior Party as
it would have had against the prior landlord to the extent of any damages
occurring after the Transfer Date, but in any event limited to Senior Party's
interest in the Building and Real Property; or (e) required to make any capital
improvements to the Building or the Premises which any prior landlord may have
agreed to make but had not completed, however, Tenant shall have the same rights
against Senior Party as it would have had against the prior landlord, but in any
event limited to Senior Party's interest in the Building and Real Property. The
SNDA or similar instrument for such periods shall also provide that Tenant will
not exercise its remedies against Landlord (other than the limited self-help
remedy provided in Section 13.7 below and subject to the notice and opportunity
to cure provisions set forth therein) until after first providing notice to
Senior Party and a reasonable period to cure, which period may be extended for
such periods as may be necessary for Senior Party to obtain control of the
Building and Real Property. Notwithstanding the foregoing, a Senior Party may
elect at any time to cause its interest in the Building or the Real Property to
be subordinate and junior to Tenant's interest under this Lease by filing an
instrument in the real property records of King County, Washington effecting
such election and providing Tenant with notice of such election. In no event
shall any Senior Party or any Successor have any liability or obligation
whatsoever to Tenant or Tenant's successors or assigns for the return of all or
any part of the Security Deposit unless, and then only to the extent that, such
Senior Party or Successor actually receives all or any part of the Security
Deposit. Tenant, upon Landlord's or any Successor's request, shall execute
promptly a written SNDA or similar agreement to confirm such attornment and if
Tenant fails or refuses to do so within ten (10) days after written request
therefor, such failure or refusal shall constitute a material default by Tenant
under this Lease.

        10.3    REAs. Tenant agrees that this Lease and the rights of Tenant
hereunder are subject and subordinate to any reciprocal access or easement
agreements whether now or in the future affecting the Building or Real Property
(the "REAs"); provided, however, any future REAs shall not materially adversely
affect any specific rights granted to Tenant hereunder.

        10.4    Estoppel Certificate. Within ten (10) days of a written request
from Landlord, Tenant shall execute and deliver to Landlord any estoppel
certificate addressed to Landlord and/or to any Senior Party or prospective
Senior Party or, any purchaser or prospective purchaser of all or any portion
of, or interest in, the Building or Real Property, on a form supplied by
Landlord or such other addressee (including but not limited to the form attached
hereto as Exhibit G), certifying as to such facts (if true) as the addressee may
reasonably require. In the event that Tenant fails or refuses to deliver an
estoppel certificate to Landlord within ten (10) days of a written request, then
Tenant shall conclusively be deemed, without exception, to have acknowledged the
correctness of the statements set forth in the form of certificate provided and
Tenant shall be estopped from denying the correctness of each such statement,
and the addressee thereof may rely on the correctness of the statements in such
form of certificate, as if made and certified by Tenant.

        Within ten (10) days after Landlord's receipt of a written request from
Tenant, Landlord shall execute and deliver to Tenant an estoppel certificate
certifying that: (a) this Lease has not been amended or modified and is in full
force and effect or, if there has been a modification or amendment, that this
Lease is in full force and effect as modified or amended, and stating the
modifications or amendments; (b) specifying the date to which the Rent has been
paid; (c) stating whether, to the best knowledge of Landlord, Tenant is in
default and, if so, stating the nature of the default; and (d) stating the Term
Commencement Date, whether any option to extend the Term has been exercised and
any other matters (if true) as Tenant may reasonably request. Notwithstanding
the foregoing, in no event shall Landlord be required hereunder to execute and
deliver an estoppel certificate at any time during which Tenant is in default
hereunder. Tenant shall on demand reimburse Landlord for its reasonable costs
incurred in preparing and delivering any such estoppel certificate.

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<PAGE>

        10.5    Failure to Deliver. Tenant's failure to deliver either an SNDA
or an estoppel certificate when and as required under this Article 10 shall
constitute a default under this Lease.

                                   ARTICLE 11
                                    INSURANCE

        11.1    Landlord's Casualty Insurance. Landlord shall maintain, or cause
to be maintained, a policy or policies of insurance with the premiums thereon
fully paid in advance, issued by and binding upon an insurance company of good
financial standing, insuring the Building against loss or damage by fire or
other insurable hazards (including earthquake loss if Landlord elects to
maintain such coverage) and contingencies for the full insurable value thereof
or, in the alternative, insuring for eighty percent (80%) of the replacement
cost thereof (or such minimum amount as shall be required to eliminate operation
of coinsurance provisions), exclusive of excavations and foundations. Landlord
shall not be obligated to insure any of Tenant's furniture, equipment,
machinery, trade-fixtures, personal property, goods or supplies ("Tenant's
Personal Property"), or any Tenant Extra Improvements or Alterations that Tenant
may make upon the Premises. If the annual premiums paid by Landlord for such
casualty insurance exceed the standard premium rates because the nature of
Tenant's operations result in extra-hazardous or higher than normal risk
exposure, then Tenant shall, upon receipt of appropriate premium invoices,
reimburse Landlord for such increases in premium. All insurance proceeds payable
under Landlord's insurance carried hereunder shall be payable solely to Landlord
and Tenant shall have no interest therein, however, if the proceeds cover Tenant
Improvements and Landlord elects or is otherwise required to restore the
casualty as provided herein, the insurance proceeds applicable to the Tenant
Improvements shall be used to rebuild such Tenant Improvements.

        11.2    Liability Insurance. Landlord (with respect to the Building) and
Tenant (with respect to the Premises and Building) shall each maintain or cause
to be maintained a policy or policies of commercial general liability insurance
with the premiums thereon fully paid in advance, issued by and binding upon an
insurance company of good financial standing, such insurance to afford minimum
protection of not less than Two Million Dollars ($2,000,000.00), per occurrence,
combined single limit, for bodily injury (including death and property damage).
The coverages required to be carried shall be extended to include, but not to be
limited to, blanket contractual liability, personal injury liability (libel,
slander, false arrest and wrongful eviction), and broad form property damage
liability. Tenant's contractual liability insurance shall apply to Tenant's
indemnity obligations under this Lease. The certificate evidencing Tenant's
insurance coverage required hereunder shall state that the insurance includes
the liability assumed by Tenant under this Lease. Tenant's insurance required
hereunder shall be written to be primary with any other insurance available to
Landlord being excess, except to the extent of claims based on the negligence of
Landlord, its employees, contractors or agents. Upon request of Tenant, Landlord
shall provide Tenant reasonable evidence that the insurance required to be
maintained hereunder by Landlord is in full force and effect.

        11.3    Tenant's Additional Insurance.

                (a)     All Risk Coverage. Tenant shall provide insurance
coverage during the Term against loss or damage by fire and such other risks as
are from time to time included in an "all risk" policy (including without
limitation sprinkler leakage and water damage), insuring the full replacement
cost of any Tenant Extra Improvements, any Alterations (other than Building
Standard Improvements) and Tenant's Personal Property.

                (b)     Workers' Compensation Insurance. Throughout the Lease
Term, Tenant, at its own expense, shall keep and maintain in full force and
effect workers' compensation insurance in an amount equal to at least the
minimum statutory amount then currently required in the State of Washington.

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<PAGE>

                (c)     Other. Such other form or forms of insurance as are
generally required or obtained for similar projects, as Landlord or any
mortgagee of Landlord may reasonably require from time to time, against the same
or other insurable hazards which at the time are commonly insured against in the
case of premises similarly situated, due regard being given to the height and
type of buildings thereon and their construction, use and occupancy.

                (d)     Policy Form. All policies required to be carried by
Tenant, under this Article 11 shall be written with financially responsible
companies with a Best & Company rating of "B+ IX" or better, and shall name
Landlord, Landlord's property manager and any Senior Party as an additional
insured, and each insurer shall agree not to cancel or alter the policy without
at least thirty (30) days prior written notice to Landlord and all named and
additional insureds. All policies required to be carried by Landlord under this
Article 11 shall be written with financially responsible companies with a Best &
Company rating of "B+ 1" or better. Any deductible or self-insurance provisions
under any insurance policies maintained by Tenant shall be subject to Landlord's
prior written approval.

                (e)     Certificates. Prior to commencement of the Term, and
thereafter during the Term, within fifteen (15) days prior to the expiration
date of any such coverage, Tenant shall deliver to Landlord a certificate or
certificates of the insurance required hereunder. If Tenant fails to provide
such proof of insurance, Landlord shall be authorized (but not required) to
procure such coverage in the amounts stated with all costs thereof to be charged
to Tenant and paid upon written invoice therefor as an Extra Service. Landlord
shall provide Tenant with a certificate of insurance evidencing insurance
required to be carried by Landlord hereunder, within a reasonable time following
receipt of Tenant's request (but in no event more frequently than once every
twelve (12) months nor at any time during which Tenant is in default under this
Lease).

        11.4    Indemnity and Exoneration.

                (a)     Landlord shall not be liable to Tenant for any loss,
damage or injury to person or property caused by (i) theft, fire, vandalism,
assault, battery, act of God, acts of the public enemy, acts of terrorists or
criminals, riot, strike, insurrection, war, court order, requisition or order of
governmental body or authority, whether or not the negligence of Landlord was a
partial cause of such loss, damage or injury, or (ii) the active negligence or
willful misconduct of Tenant or Tenant Parties, or (iii) repair or alteration of
any part of the Building or failure to make any such repair except as expressly
otherwise provided in this Lease.

                /s/ JAK
                -----------------
                Tenant's Initials

                (b)     Tenant shall indemnify, defend, protect and hold
Landlord and Landlord Parties harmless from and against any and all Claims
arising out of or related to claims of injury to or death of persons, damage to
property occurring or resulting directly or indirectly from the use or occupancy
of the Premises or activities of Tenant or Tenant Parties in or about the
Premises, the Building or the Real Property; provided, however, that the
foregoing indemnity shall not be applicable to claims arising in whole or in
part by reason of the negligence or willful misconduct of Landlord or Landlord's
breach of its obligations under this Lease, unless such claims are or should be
covered by insurance required to be carried by Tenant under the terms of this
Lease, in which case such claims shall be subject to the terms of this
indemnity.

                (c)     Landlord shall indemnify, defend, protect and hold
Tenant and Tenant Parties harmless from and against any and all claims,
judgments, damages, penalties, fines, costs, expenses, liabilities or losses
arising solely out of the negligence or willful misconduct of Landlord or
Landlord's breach of its obligations to maintain and operate the Building in
accordance with this Lease, unless such claims are or should be covered by
insurance required to be carried by Tenant under the terms of this Lease, in
which case such claims shall not be subject to the terms of this indemnity;
provided, however, that the foregoing indemnity shall not include claims
arising, in whole or in part, by reason of the

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<PAGE>

negligence or willful misconduct of Tenant or Tenant Parties, or Tenant's breach
of its obligations under this Lease.

                (d)     To the extent, but only to the extent, necessary to
fully indemnify the parties from claims made by the indemnifying party or its
employees, the indemnities herein constitutes party's a waiver of the
indemnifying party's immunity under the Washington Industrial Insurance Act,
RCW Title 51, as between Landlord and Tenant only.

        11.5    Indemnity for Liens. Tenant shall indemnify, defend and protect
Landlord and hold and save Landlord harmless of and from any and all loss,
claims, proceedings, cost, damage, injury, causes of action, liabilities or
expense arising out of or in any way related to work or labor performed,
materials or supplies furnished to or at the request of Tenant or in connection
with performance of any work done for the account of Tenant in the Premises or
the Building.

        11.6    Waiver of Subrogation Rights. Anything in this Lease to the
contrary notwithstanding, Landlord and Tenant each waive all rights of recovery,
claim, action or cause of action, against the other, Tenant Parties or Landlord
Parties, as applicable, for any loss or damage that may occur to the Premises,
or any improvements thereto, or the Building or Real Property or any personal
property of such party therein, by reason of fire, the elements, or any other
cause that could be insured against under the term of an "all risk" insurance
policy or other casualty insurance coverages which are required to be obtained
pursuant to this Lease, regardless of cause or origin, including negligence of
the other party, Landlord Parties or Tenant Parties, as applicable, and each
party covenants that no insurer shall hold any right of subrogation against such
other party. Tenant shall advise its insurers of the foregoing and
such waiver shall be a part of each policy maintained by Tenant that applies to
the Premises, any part of the Building or Real Property or Tenant's use and
occupancy of any part thereof.

                                   ARTICLE 12
                           CASUALTY AND EMINENT DOMAIN

        12.1    Damage and Destruction. If a fire or other casualty in the
Premises or the Building occurs, Tenant shall immediately give notice thereof to
Landlord. The following provision shall apply to any fire or other casualty:

                (a)     If the damage is limited solely to the Premises and the
Premises can, in the reasonable opinion of Landlord, be made tenantable with all
damage repaired within six (6) months from the date of damage or destruction,
then Landlord shall diligently rebuild the same; provided, however, that
Landlord shall not be obligated to expend for such repair and amount in excess
of the insurance proceeds recovered or recoverable as a result of such damage.

                (b)     If portions of the Building outside the boundaries of
the Premises are damaged or destroyed (whether or not the Premises are also
damaged or destroyed) and (i) the Premises and the Building can both, in the
reasonable opinion of Landlord, be made tenantable with all damage repaired
within six (6) months from the date of damage or destruction, and (ii) Landlord
determines that such reconstruction is economically feasible, then Landlord
shall diligently rebuild the same; provided, however, that Landlord shall not be
obligated to expend for such repair an amount in excess of the insurance
proceeds recoverable as a result of such damage and Landlord shall have no
obligation to repair or restore Tenant Extra Improvements or Alterations (other
than Buildings Standard Improvements).

                (c)     If (i) the Premises should be damaged by any occurrence
not covered by Landlord's insurance, or (ii) the Premises or the Building should
be damaged to the extent that the damage cannot, in Landlord's reasonable
opinion be restored within six (6) months from the date of damage, or (iii) the
Building should be damaged to the extent of more than fifty percent (50%) of the
cost of replacement thereof, notwithstanding that the Premises may be
undamaged, or (iv) if the damage occurs during the last two (2) years of the
Term and Tenant does not exercise an Extension Option (to the

                                       36

<PAGE>

extent any Extension Options remain), Landlord may elect either to repair or
rebuild the Premises or the Building or to terminate this Lease upon giving
notice in writing of such election to Tenant within sixty (60) days after the
happening of the event causing the damage.

                (d)     During any period when the Premises are rendered
untenantable because of any casualty, Base Rent shall abate proportionately
until such time as the Premises are made tenantable for general office use, or,
if required by applicable law, a new certificate of occupancy is issued for the
damaged portion of the Premises, and no portion of the Rent so abated shall be
subject to subsequent recapture; provided, however, that there shall be no such
abatement if the damage is caused by Tenant or any Tenant Party.

                (e)     The proceeds form any insurance paid by reason of damage
to or destruction of the Building or any part thereof, the Building Standard
Improvements or any other element, component or property insured by Landlord
shall belong to and be paid to Landlord subject to the rights of any mortgagee
of Landlord's interest in the Building or Real Property or the beneficiary of
any deed of trust that constitutes an encumbrance thereon. If this Lease is
terminated by either party as a consequence of a casualty in accordance with any
of the provisions of this Section 12.1, all proceeds of insurance required to be
maintained by Landlord shall be paid to Landlord subject to the rights of any
mortgagee of Landlord's interest in the Building or Real Property or the
beneficiary of any deed of trust that constitutes an encumbrance thereon.

                (f)     If the Premises, or any part thereof, or any portion of
the Building necessary for Tenant's use of the Premises, are damaged or
destroyed during the last twelve (12) months of the Term, or any extension
thereof, Landlord or Tenant may terminate this Lease by giving written notice
thereof to the other party within thirty (30) days after the date of the
casualty, in which case this Lease shall terminate as of the later of the date
of the casualty or the date of Tenant's vacation of the Premises.

                (g)     Except to the extent expressly provided in this Lease,
nothing contained in this Lease shall relieve Tenant of any liability to
Landlord or to Landlord's insurance carriers that Tenant may have under law or
under the provisions of this Lease in connection with any damage to the Premises
or the Building by fire or other casualty.

                (h)     If Landlord rebuilds the Premises under any provision of
this Article 12 and the space affected contained Tenant Extra Improvements or
Alterations which Tenant desires to rebuild, Tenant shall repair and restore
such Tenant Extra Improvements and Alterations at Tenant's expense so as to
restore the Premises to the condition existing prior to such damage or
destruction, or, at Landlord's election, Landlord may repair and rebuild the
Tenant Extra Improvements or Alterations, at Tenant's sole cost and expense in
accordance with Section 6.7 of this Lease. Tenant may elect by written notice
delivered to Landlord no later than ten (10) Business Days after the casualty,
not to rebuild such Tenant Extra Improvements or Alterations in which case the
Premises shall be restored to a condition consistent with a standard office
layout with Building Standard Improvements.

                (i)     Notwithstanding any other provision of this Section
12.1, within a reasonable period of time after the occurrence of any casualty,
Landlord shall notify Tenant as to the expected period of time needed to make
any repair or restoration. If (A) Landlord estimates that it will take more than
three hundred sixty-five (365) days to complete the repair or restoration after
the date of the casualty or more than two hundred seventy (270) days to complete
the repair or restoration after Landlord's receipt of insurance proceeds, and
(B) the damage or destruction renders a material portion of the Premises
untenantable, then Tenant may elect to terminate this Lease by giving Landlord
written notice of termination within twenty (20) days after receipt of
Landlord's notice. If Tenant does not provide written notice within such time
period, Tenant shall have permanently waived its right to terminate this Lease
pursuant to this provision.

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<PAGE>

                (j)     If Landlord elects to effect such repair or restoration
and Tenant has not terminated this Lease pursuant to an express right hereunder,
Landlord shall proceed promptly, in good faith and with all reasonable diligence
to effect such repair or restoration as quickly as practicable, subject to
Landlord's receipt of insurance proceeds and to Force Majeure delays. The
provisions in Exhibit C relating to Substantial Completion of the initial
construction and delivery of the Premises shall apply to the extent practicable
to the construction and delivery of any repaired or restored Premises.

        12.2    Condemnation.

                (a)     If such portion of the Premises or any portion of the
Building or Real Property shall be taken or condemned for any public purpose and
the remainder of the Premises are rendered untenantable, this Lease shall, at
the option of either party, terminate as of the date of such taking. If this
Lease is not terminated in its entirety then it shall terminate only as to the
portion of the Premises taken and Base Rent and Tenant's Proportionate Share
shall be adjusted to reflect the new Net Rentable Area of the Premises and/or
the Building. If any portion of the Building or Real Property shall be taken or
condemned for any public purpose to such an extent as to render the Building not
economically viable in Landlord's discretion, then whether or not the Premises
or any part thereof is taken or conveyed, Landlord may by notice in writing to
Tenant terminate this Lease, and the Base Rent and other charges shall be paid
or refunded as of the date of termination.

                (b)     If during the Term of this Lease the entire Premises
shall be taken by eminent domain or destroyed by the action of any public or
quasi-public authority or in the event of conveyance in lieu thereof, this Lease
shall terminate as of the day possession shall be taken by such authority, and
Tenant shall pay Rent up to that date with an appropriate refund by Landlord of
such rent as shall have been paid in advance for a period subsequent to the date
of the taking of possession.

                (c)     If a temporary taking of all or a portion of the
Premises occurs, there shall be no abatement of Rent and Tenant shall remain
fully obligated for performance of all of the covenants and obligations on its
part to be performed pursuant to the terms of this Lease. All proceeds awarded
or paid with respect thereto shall belong to Tenant.

                (d)     All compensation awarded for any such taking or
conveyance whether for the whole or a part of the Premises shall be the property
of Landlord, whether such damages shall be awarded as compensation for
diminution in the value of the leasehold or of the fee of or underlying
leasehold interest in the Premises, and Tenant waives all claims against
Landlord and the condemning authority for damages for termination of its
leasehold interest or interference with its business and hereby assigns to
Landlord all of Tenant's right, title and interest in and to any and all such
compensation; provided, however, that Tenant shall be entitled to claim, prove
and receive in the condemnation proceedings such separate award as may under the
laws of the State of Washington be expressly allocated to Tenant's personal
property or relocation expenses, provided that such award shall be made by the
court in addition to and shall not result in a reduction of the award made to
Landlord.

                                   ARTICLE 13
                                     DEFAULT

        13.1    Events of Default. The occurrence of any of the following shall
constitute an event of default ("Event of Default") on the part of Tenant:

                (a)     Abandonment. Abandonment of (i) forty percent (40%) or
more of the Net Rentable Area of the Premises for a continuous period in excess
of one (1) year, or (ii) Tenant's fourth (4th) floor main entrance for a
continuous period in excess of thirty (30) days;

                (b)     Nonpayment of Rent. Failure to pay any installment of
Base Rent, Operating Costs or other items of Rent, upon the date when payment is
due, subject to the terms of Section 13.2(e) below;

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<PAGE>

                (c)     Other Obligations. Failure to perform any obligation,
agreement or covenant under this Lease other than those matters specified in
Sections 13.1(a), 13.1(b) and 13.1(i), such failure continuing for fifteen (15)
days after written notice of such failure (or with respect to nonmonetary
obligations only, such longer period as is reasonably necessary to remedy such
default, provided that Tenant shall continuously and diligently pursue such
remedy at all times until such default is cured);

                (d)     General Assignment. A general assignment for the benefit
of creditors by Tenant or any guarantor of Tenant's obligations hereunder
("Guarantor");

                (e)     Bankruptcy. The filing of any voluntary petition in
bankruptcy by Tenant or Guarantor, or the filing of an involuntary petition by
Tenant's or Guarantor's creditors, which involuntary petition remains
undischarged for a period of thirty (30) days. If under applicable law the
trustee in bankruptcy or Tenant has the right to affirm this Lease and continue
to perform the obligations of Tenant hereunder, such trustee or Tenant shall, in
such time period as may be permitted by the bankruptcy court having
jurisdiction, cure all defaults of Tenant hereunder outstanding as of the date
of the affirmance of this Lease and provide to Landlord such adequate assurances
as may be necessary to ensure Landlord of the continued performance of Tenant's
obligations under this Lease;

                (f)     Receivership. The employment of a receiver to take
possession of substantially all of Tenant's assets or the Premises, if such
receivership remains undissolved for a period of ten (10) Business Days after
creation thereof;

                (g)     Attachment. The attachment, execution or other judicial
seizure of all or substantially all of Tenant's assets or the Premises, if such
attachment or other seizure remains undismissed or undischarged for a period of
ten (10) Business Days after the levy thereof;

                (h)     Insolvency. The admission by Tenant or Guarantor in
writing of its inability to pay its debts as they become due, the filing by
Tenant or Guarantor of a petition seeking any reorganization, arrangement,
composition, readjustment, liquidation, dissolution or similar relief under any
present or future statute, law or regulation, the filing by Tenant or Guarantor
of an answer admitting or failing timely to contest a material allegation of a
petition filed against Tenant or Guarantor in any such proceeding or, if within
thirty (30) days after the commencement of any proceeding against Tenant or
Guarantor seeking any reorganization, or arrangement, composition, readjustment,
liquidation, dissolution or similar relief under any present or future statute,
law or regulation, such proceeding shall not have been dismissed; and

                (i)     Failure to Deliver. Failure to deliver an SNDA or an
estoppel certificate when and as required under Article 10.

        13.2    Remedies Upon Default.

                (a)     Termination. If an Event of Default occurs (other than
an Event of Default under Section 13.1(i) above), Landlord shall have the right,
with or without notice or demand, immediately (after expiration of the
applicable grace periods specified herein) to terminate this Lease, and at any
time thereafter recover possession of the Premises or any part thereof and expel
and remove therefrom Tenant and any other person occupying the same, by any
lawful means, and again repossess and enjoy the Premises without prejudice to
any of the remedies that Landlord may have under this Lease, or at law or equity
by reason of Tenant's default or of such termination.

                (b)     Continuation After Default. Even though Tenant has
breached this Lease and/or abandoned the Premises, this Lease shall continue in
effect for so long as Landlord does not terminate Tenant's right to possession
under Section 13.2(a) hereof, and Landlord may enforce all of its rights and
remedies under this Lease, including (but without limitation) the right to
recover Rent as it becomes due. Acts of maintenance, preservation or efforts to
lease the Premises or the appointment of

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<PAGE>

receiver upon application of Landlord to protect Landlord's interest under this
Lease shall not constitute an election to terminate Tenant's right to
possession.

                (c)     Cure. Landlord may cure such default or perform such
obligation on Tenant's behalf and at Tenant's expense as an Extra Service.
Tenant shall reimburse Landlord on demand pursuant to Section 5.4.

                (d)     Tax Credit and Amortized Rent. Tenant acknowledges that
it may be required to make certain payments to Landlord under Section 14.29 and
under Paragraph 14(c) of Exhibit C to reimburse Landlord for sums that Landlord
will expend on its behalf. Therefore, in the event of any default under Section
13.1(e), Landlord may process a separate claim in bankruptcy for the amount of
any sales tax deferral that Landlord is required to repay under RCW Chapter
82.63 or any unamortized portion of the Amortized Amount (as defined in
Paragraph 14(c) of Exhibit C), together with interest, late charges and
penalties.

                (e)     Initial Rent Payments. Notwithstanding anything to the
contrary in Section 13.1(b) above, Tenant shall have fifteen (15) days from the
due date within which to pay the first three (3) installments (but only the
first three (3) installments) of Rent applicable to the Minimum Initial
Premises, Hold Space and each increment of Expansion Space; provided, however,
if Landlord has delivered written notice to Tenant of a late payment at any time
prior to the due date for the second installment, then the due date on the third
installment of Rent shall not be so extended.

        13.3    Damages Upon Termination. Should Landlord terminate this Lease
pursuant to the provisions of Section 13.2(a) hereof, Landlord shall have all
the rights and remedies of a landlord under applicable law and, in addition,
Landlord shall be entitled to recover from Tenant: (a) the worth at the time of
award of the unpaid Rent and other amounts which had been earned at the time of
termination; (b) the worth at the time of award of the amount by which the
unpaid Rent which would have been earned after termination until the time of
award exceeds the amount of such Rent loss that could have been reasonably
avoided; (c) the worth at the time of award of the amount by which the unpaid
Rent for the balance of the Term after the time of award exceeds the amount of
such Rent loss that could be reasonably avoided; (d) all costs incurred by
Landlord in reletting the Premises, including without limitation, brokerage
commissions, attorneys' fees, marketing and advertising expenses and expenses of
cleaning, restoring or remodeling the Premises; and (e) any other amount
necessary to compensate Landlord for all actual damages caused by Tenant's
failure to perform its obligations under this Lease (but expressly excluding
consequential damages or lost profits other than as permitted under Section 6.13
or Section 13.8). The "worth at the time of award" of the amounts referred to in
(a) and (b) shall be computed with interest at fifteen percent (15%) per annum
or the highest lawful commercial interest rate, whichever is the lower. The
"worth at the time of award" of the amount referred to in (c) shall be computed
by discounting such amount at the "discount rate" of the Federal Reserve Bank of
San Francisco in effect as of time of award plus one percent (1%) and, where
rental value is a material issue, shall be based upon competent appraisal
evidence. Landlord shall exercise such reasonable efforts as are required by
Washington law to mitigate Landlord's damages hereunder.

        13.4    Computation of Rent for Purposes of Default. For purposes of
computing unpaid Rent that would have accrued and become payable under this
Lease pursuant to the provisions of Section 13.3, unpaid Rent shall consist of
the sum of:

                (a)     the total Base Rent for the balance of the Term, plus

                (b)     a computation of the Operating Costs for the balance of
the Term, the assumed Operating Costs for the calendar year of the default and
each future calendar year in the Term to be equal to the Operating Costs for the
calendar year prior to the year in which default occurs compounded at a per
annum rate equal to the mean average rate of inflation for the preceding five
(5) calendar years as determined by reference to the Consumer Price Index - All
Items for Scattle-Tacoma-Bremerton, All

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<PAGE>

Urban Consumers, published by the Bureau of Labor Statistics of the United
States Department of Labor (Base Year 1982-84=100), or such successor index as
may be established to provide a measure of the current purchasing power of the
dollar (provided, however, that if no successor index is published by the United
States Department of Labor, Landlord may select in its reasonable discretion a
substitute index or method of measuring inflation).

        13.5    Late Charge. In addition to its other remedies, if any payment
of Rent is not received by the fifth (5th) day after the due date thereof (or
longer grace period as expressly permitted under Section 13.1(b)), Tenant shall
pay a late fee in an amount equal to Two Hundred Fifty Dollars ($250.00) plus
four percent (4%) of the delinquency for each month or portion thereof that the
delinquency remains outstanding, the parties agreeing that Landlord's damage by
virtue of such delinquencies would be difficult to compute and the amount stated
herein represents a reasonable estimate thereof. The provision for a late charge
set forth in this Section 13.5, and any collection of a late charge by Landlord,
shall not be deemed a waiver of any breach or Event of Default by Tenant under
this Lease. If Tenant's Rent checks are returned by the bank without payment
then Landlord may require Tenant to pay future installments of Rent by certified
or cashiers' check.

        13.6    Remedies Cumulative. All of the remedies permitted or available
to Landlord under this Lease, or at law or in equity, shall be cumulative and
not alternative and invocation of any such right or remedy shall not constitute
a waiver or election of remedies with respect to any other permitted or
available right or remedy.

        13.7    Tenant's Remedies. Landlord shall not be in default unless
Landlord fails to cure a default by Landlord of its obligations under this Lease
within forty-five (45) days after its receipt of notice thereof from Tenant, or
if such default is not capable of being cured within said forty-five (45) day
period, Landlord has failed to commence such cure and diligently pursue such
cure until completion. The preceding sentence is not intended to supercede the
provisions of Section 5.3 as they relate to Landlord's use of good faith efforts
to make repairs which interrupt Basic Services or Tenant's limited rental
abatement right, all as more particularly set forth therein. In no event shall
Landlord be liable for consequential damages. Tenant shall not sue, seek any
remedy or enforce any right against Landlord until (a) Tenant gives written
notice to all Senior Parties as required under any SNDA, and (b) the time
provided in any such SNDA for such Senior Party to remedy the act or omission
has elapsed following the giving of notice by Tenant to Senior Party required
thereunder, including, without limitation, time to obtain possession from
Landlord by power of sale or judicial foreclosure (except to the extent provided
otherwise in the succeeding paragraph with respect to Tenant's exercise of its
limited self-help right thereunder). Prior to the Term Commencement Date,
Tenant's recourse against Landlord shall not exceed in the aggregate an amount
equal to one-hundred eighty (180) days of Base Rent that would have been payable
under this Lease. From and after the Term Commencement Date, Tenant shall have
recourse solely against Landlord's interest in the Building and the Real
Property for recovery of any judgment from Landlord whether from a breach hereof
or from a right created by statute or at common law and Landlord and Landlord
Parties shall no longer be personally liable for any such judgment. Tenant
agrees that from and after the Term Commencement Date no other property or
assets of Landlord or any partner or member of Landlord shall be subject to
levy, execution or other enforcement procedures for satisfaction of any such
judgment or decree; no partner or member of Landlord shall be sued or named as a
party in any suit or action (except as may be necessary to secure jurisdiction
over Landlord); no service of process shall be made against any partner or
member of Landlord (except as may be necessary to secure jurisdiction over
Landlord); no judgment shall be taken against partner or member of Landlord; no
writ of execution shall ever be levied against the assets of any partner or
member of Landlord; and these covenants, limitations and agreements are
enforceable both by Landlord and by any partner or member of Landlord. Any lien
obtained to enforce any such judgment and any levy of execution thereon shall be
subject and subordinate to any Senior Instrument.

        If a default by Landlord occurs with respect to the provision of Basic
Services to the Premises, Tenant has provided simultaneous written notice
thereof to Landlord and any Senior Party (of which Tenant has notice), and
Landlord or such Senior Party has failed to commence to cure such default within

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<PAGE>

the time specified above. Tenant may thereafter cure the default for the account
of Landlord to the extent and only to the extent that such cure may be
accomplished through repairs to the electrical, mechanical or telecommunications
systems located primarily within or serving only the Premises, but which cure
shall be preceded by an additional notice to Landlord and any Senior Party (of
which Tenant has notice) given at least five (5) days prior to commencement of
such cure; provided, however, that if at the time of such interruption in any
Basic Services such Senior Party is seeking to obtain possession of the Building
through power of sale or judicial foreclosure, then during such period Tenant
may accomplish such repairs as are reasonably required to restore any such Basic
Services. Any such cure by Tenant shall be undertaken only by experienced,
qualified contractors. Landlord shall reimburse Tenant for the reasonable costs
of such cure within thirty (30) days after completion thereof and delivery to
Landlord of invoices therefor, together with such back-up information as
Landlord shall reasonably request. In the event Landlord shall fail to make such
reimbursement when required, Tenant shall have the right to offset against Base
Rent the amount of any arbitration award obtained by Tenant in connection
therewith, at any time following thirty (30) days from the date of such
arbitration award.

        13.8    Limitation on Consequential Damages. Tenant shall not be liable
to Landlord for consequential damages except in connection with defaults under:
(a) Article 7 with respect to Hazardous Materials; (b) Section 11.3 with respect
to insurance coverage; (c) Section 11.4 with respect to indemnity obligations;
(d) Section 11.5 with respect to liens; and (e) Sections 6.13 and 14.2 with
respect to holding over. Except as provided in Section 6.13, Tenant shall be
liable to Landlord for all damages, whether actual or consequential, with
respect to Tenant's obligations only under the foregoing provisions and in all
other events Tenant shall be liable for actual damages only. In addition,
Landlord and Tenant agree that Landlord's actual damages that will be caused by
Tenant if it holds over in possession after expiration of the Term, and which
Landlord shall be entitled to recover from Tenant hereunder, include the
following (subject to Landlord's duty to mitigate): (i) any sums Landlord may be
required to pay to a succeeding tenant because Landlord could not deliver the
premises in a timely manner (including delay in delivery), as limited under
Section 6.13, (ii) any expenses Landlord may incur to try to make up for the
delay in surrender (including overtime costs to complete construction on an
expedited schedule), and (iii) lost or delayed rental income that the succeeding
tenant would be obligated to pay to Landlord under its Lease but only to the
extent such rental income exceeds the holdover rent actually paid by Tenant
under Section 14.2.

                                   ARTICLE 14
                                  MISCELLANEOUS

        14.1    No Waiver. Failure of Landlord or Tenant to declare any default
immediately upon occurrence thereof, or delay in taking any action in connection
therewith, shall not waive such default, but Landlord or Tenant, as the case may
be, shall have the right to declare any such default at any time thereafter. No
waiver by Landlord of an Event of Default, or waiver by Landlord or Tenant of
any agreement, term, covenant or condition contained in this Lease, shall be
effective or binding on such party unless made in writing and no such waiver
shall be implied from any omission by such party to take action with respect to
such matter. No express written waiver by Landlord or Tenant of any such matter
shall affect or cover any other matter or period of time, other than the matter
and/or period of time specified in such express waiver. One or more written
waivers by Landlord or Tenant of any other matter shall not be deemed to be a
waiver of any subsequent matter in the performance of the same provision of this
Lease. Acceptance of Rent by Landlord hereunder, or endorsement of any check,
shall not, in and of itself, constitute a waiver of any breach or Event of
Default or of any agreement, term, covenant or condition of this Lease, except
as to the payment of Rent so accepted, regardless of Landlord's knowledge of any
concurrent Event of Default or matter. Landlord may, at its election, apply any
Rent received from

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<PAGE>

Tenant to the oldest obligation outstanding from Tenant to Landlord, any
endorsement or other statement of Tenant to the contrary notwithstanding. No
course of conduct between Landlord and Tenant, and no acceptance of the keys to
or possession of the Premises before the termination of the Term by Landlord or
any employee of Landlord shall constitute a waiver of any such breach or of any
term, covenant or condition of this Lease or operate as a surrender of this
Lease.

        14.2    Holding Over.

                (a)     Without Landlord's Consent. If Tenant (or anyone
claiming under Tenant) remains in possession after expiration or termination of
this Lease without the written consent of Landlord, Tenant shall comply with all
terms and conditions of this Lease except that Tenant shall pay Base Rent for
each month or partial month of occupancy thereafter at a rate equal to one
hundred fifty percent (150%) of the greater of: (i) the Base Rent for the last
month of the Term, or (ii) the Fair Market Rent, together with such other
amounts as may become due hereunder. No occupancy or payment of Rent by Tenant
after expiration of the Term shall operate to renew or extend the Term. For
purposes of this Section 14.2, the term "remains in possession" shall include
circumstances where Tenant has failed to fully vacate the Premises or failed to
fully complete all removal and restoration work required under this Lease.

                (b)     Permitted Holdover Term. Provided that Tenant is not in
default of this Lease at the time of exercise (which shall mean that no Event of
Default has occurred and has not been cured during the applicable cure period,
if any, or otherwise waived in writing by Landlord), Tenant shall have one (1)
option to extend the Term of this Lease ("Holdover Option") for the number of
months set forth below (the "Permitted Holdover Term") commencing on the day
after the expiration of the Initial Term or the last exercised Extension Term,
as applicable, and continuing through the expiration date of the Permitted
Holdover Term, subject to all of the terms and conditions of this Lease, except
that Base Rent shall be adjusted as provided below. Tenant shall provide
Landlord with written notice of Tenant's intent to exercise its Holdover Option
at least nine (9) months prior to the expiration of the Initial Term or the last
exercised Extension Term, as applicable (the "Initial Holdover Notice"). If
Tenant does not deliver the Initial Holdover Notice by the appropriate date then
the Holdover Option shall immediately terminate and be of no further force or
effect and this Lease shall terminate on the scheduled Expiration Date. In the
Initial Holdover Notice, Tenant shall elect a Permitted Holdover Term of either
three (3) months or six (6) months duration. If in the Initial Holdover Notice
Tenant has elected a three (3) month duration, then Tenant shall have the
additional right to modify the Permitted Holdover Term to one of six (6) months
duration by delivering written notice of such election to Landlord at least six
(6) months prior to the expiration of the Initial Term or Extension Term, as
applicable (the "Second Holdover Notice"). Tenant's exercise of the Holdover
Option and the elections set forth in the Initial Holdover Notice (as modified
by the Second Holdover Notice, if applicable) shall be irrevocable and shall
apply to the entire Premises. If the Holdover Option is properly exercised by
Tenant, then the Base Rent hereunder shall be adjusted as follows: (a) during
the first three (3) months of the Permitted Holdover Term, Base Rent shall be
one hundred twenty-five percent (125%) multiplied by the greater of (i) the Base
Rent for the last month of the Term preceding the Permitted Holdover Term, or
(ii) Fair Market Rent; and (b) during the fourth (4th) through sixth (6th)
months of the Permitted Holdover Term, if applicable, Base Rent shall be one
hundred fifty percent (150%) multiplied by the greater of (i) the Base Rent for
the last month of the Term preceding the Permitted Holdover Term, or (ii) Fair
Market Rent. Tenant's Holdover Option shall be a Personal Right.

                (c)     Indemnity. If Tenant remains in possession after the
expiration or termination of this Lease without Landlord's consent, in addition
to the payment described in Section 14.2(a), Tenant shall indemnify, defend,
protect and hold Landlord and Landlord Parties harmless from and against any and
all Claims for damages by any other tenant or third person to whom Landlord may
have leased or offered to lease all or any part of the Premises effective on or
after the termination of this Lease, together with all loss, cost, expense,
damages and liabilities in connection with any such reletting, including,

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without limitation, attorneys' fees and Landlord's lost revenues, but subject to
the limitations set forth in Section 6.13 above.

                (d)     Partial Reduction in Holdover Rent. Notwithstanding the
foregoing, if during the Permitted Holdover Term, any portion of the Premises
(i) has been fully vacated by Tenant, with completion of all required removal
and restoration work, and (ii) has been accepted in writing by Landlord for
purposes of commencement of construction of tenant improvements for a
replacement tenant or is otherwise occupied by such replacement tenant, then
Rent for such portion of the Premises shall be abated.

        14.3    Attorneys' Fees. If either party places the enforcement of this
Lease, or any part thereof, or the collection of any Rent due, or to become due
hereunder, or recovery of the possession of the Premises in the hands of an
attorney or collection agency, or files suit upon the same, or seeks a judicial
declaration of rights hereunder, the prevailing party shall recover its
reasonable attorneys' fees, court costs and collection agency charges. As used
herein, "prevailing party" shall mean the party who substantially prevails in
the matter at issue, including without limitation, a party who dismisses an
action for recovery hereunder in exchange for payment of the sums allegedly due,
performance of covenants allegedly breached or consideration substantially equal
to the relief sought in the action.

        14.4    Amendments. This Lease may not be altered, changed or amended,
except by an instrument in writing signed by both parties.

        14.5    Transfers by Landlord. Landlord shall have the right to transfer
and assign, in whole or in part, all of its rights and obligations hereunder and
in the Building and Real Property. Landlord shall provide notice to Tenant of
any such transfer or assignments, including the assignee's name and address. If
Landlord sells or otherwise transfers the Building, or if Landlord assigns its
interest in this Lease, other than an assignment solely for security purposes,
such purchaser, transferee or assignee thereof shall be deemed to have assumed
Landlord's obligations hereunder, and from and after the Term Commencement Date,
Landlord or any successor shall thereupon be relieved of all liabilities
hereunder arising thereafter but this Lease shall otherwise remain in full force
and effect. Landlord or any person or party succeeding to possession of the
Building as a successor to Landlord shall be subject to Landlord's obligations
hereunder only during the period of such person's or party's ownership.

        14.6    Severability. If any term or provision of this Lease, or the
application thereof to any person or circumstances, shall to any extent be
invalid or unenforceable, the remainder of this Lease, or the application of
such provision to persons or circumstances other than those as to which it is
invalid or unenforceable, shall not be affected thereby, and each provision of
this Lease shall be valid and shall be enforceable to the extent permitted by
law.

        14.7    Notices. All notices, demands, consents and approvals that may
or are required to be given by either party to the other hereunder shall be in
writing and shall be deemed to have been fully given by personal delivery or
when deposited in the United States mail, certified or registered, postage
prepaid, and addressed to the party to be notified at the address for such party
specified on the Basic Lease Information Sheet, or to such other place as the
party to be notified may from time to time designate by at least fifteen (15)
days notice to the notifying party. Tenant shall deliver a copy of any notice
given to Landlord to (a) Landlord's property manager, (b) any Senior Party whose
address is known to Tenant, and (c) to 2800 Post Oak Boulevard, 50th floor,
Houston Texas 77056-6118, Attention: C. Hastings Johnson. Notwithstanding the
foregoing, personal delivery of notices to Tenant may be made by leaving a copy
of the notice, addressed to Tenant, at the Premises. Tenant appoints as its
agent to receive service of all default notices and notice of commencement of
unlawful detainer proceedings the person in charge of or apparently in charge of
or occupying the Premises at the time, and, if there is no such person, then
such service may be made by attaching the same on the main entrance of the
Premises.

        14.8    Landlord Relocation Right. [Intentionally Omitted]

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<PAGE>

        14.9    No Option. Submission of this instrument for examination or
signature by Tenant does not constitute a reservation of or an option to lease,
and it is not effective as a lease or otherwise until execution and delivery by
both Landlord and Tenant. Landlord shall not be deemed to have made an offer to
Tenant by furnishing Tenant with a copy of this Lease with particulars inserted.
No contractual or other rights shall exist or be created between Landlord and
Tenant until all parties hereto have executed this Lease and until it has been
approved in writing by any Senior Party and fully executed copies have been
delivered to Landlord and Tenant.

        14.10   Integration and Interpretation. The terms of this Lease are
intended by the parties as a final expression of their agreement with respect to
such terms as are included in this Lease and may not be contradicted by evidence
of any prior or contemporaneous agreement, arrangement, understanding or
negotiation (whether oral or written). The parties further intend that this
Lease constitutes the complete and exclusive statement of its terms, and no
extrinsic evidence whatsoever may be introduced in any judicial proceeding
involving this Lease. The language in all parts of this Lease shall in all cases
be construed as a whole and in accordance with its fair meaning and not
construed for or against any party, regardless of which party may have drafted
the provision in question, it being agreed that this is a negotiated agreement.
The following exhibits and schedules are attached hereto and incorporated by
this reference as if fully set forth herein:

                Exhibit A         Stacking Plan of the Premises
                Exhibit B         Legal Description of the Real Property
                Exhibit C         Initial Improvement of the Premises
                Schedule C-1      Base Building Improvements
                Schedule C-2      Definition of Building Standard Improvements
                Exhibit D         Rules and Regulations
                Exhibit E         Lease Commencement Certificate
                Exhibit F-l       Conceptual Signage Plan
                Exhibit F-2       Major Tenant Sign
                Exhibit G         Form of Estoppel Certificate
                Exhibit H         Janitorial Specifications

        14.11   Quitclaim. Upon expiration or earlier termination of this Lease,
Tenant shall, immediately upon request of Landlord, execute, acknowledge and
deliver to Landlord a recordable deed quit-claiming to Landlord all interest of
Tenant in the Premises, the Real Property, the Building and this Lease.

        14.12   No Easement for Light, Air and View. This Lease conveys to
Tenant no rights for any light, air or view. No diminution of light, air or
view, or any impairment of the visibility of the Premises from inside or outside
the Building, by any structure or other object that may hereafter be erected
(whether or not by Landlord) shall entitle Tenant to any reduction of Rent under
this Lease, constitute an actual or constructive eviction of Tenant, result in
any liability of Landlord to Tenant, or in any other way affect this Lease or
Tenant's obligations hereunder. Notwithstanding the foregoing, Landlord agrees
not to construct on the Real Property following initial construction of the
Building any additional permanent improvements that cover any exterior windows
in the Premises except to the extent required by the City of Seattle or any
Laws.

        14.13   No Merger. The voluntary or other surrender or termination of
this Lease by Tenant, or a mutual cancellation thereof shall not work a merger,
but, at Landlord's sole option, shall either terminate all existing subleases or
subtenancies or shall operate as an assignment to Landlord of all such subleases
or subtenancies.

        14.14   Memorandum of Lease. Tenant shall, upon request of Landlord,
execute, acknowledge and deliver a short form memorandum of this Lease (and any
amendment hereto or consolidation hereof),

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<PAGE>

in form suitable for recording. In no event shall this Lease or any memorandum
thereof be recorded without the prior written consent of Landlord, and any
attempt to do so shall constitute a default by Tenants; provided, however, that
Landlord shall execute and record a memorandum as contemplated herein upon
Tenant's request at any time following the commencement of construction of the
Building and Tenant's payment to Landlord of the advance Base Rent as provided
under Section 2.6(a), if Tenant has also executed and delivered to Landlord (a)
any SNDA required under Section 10.1, and (b) a recordable termination of the
memorandum in form acceptable to Landlord (which Landlord may record at any time
following the Expiration Date or any earlier termination of this Lease).

        14.15   Survival. All of Tenant's covenants and obligations contained in
this Lease shall survive the expiration or earlier termination of this Lease. No
provision of this Lease providing for termination in certain events shall be
construed as a limitation or restriction of Landlord's rights and remedies at
law or in equity available upon a breach by Tenant of this Lease.

        14.16   Financial Statements. If Landlord intends to sell all or any
portion of the Building or the Real Property (or any interest therein), or
obtain a loan secured by the Building or the Real Property (or any interest
therein), then Tenant shall, within fifteen (15) days of Landlord's written
request, furnish Landlord with financial statements, dated no earlier than one
(1) year before such request, certified as accurate by Tenant, or, if available,
audited financial statements prepared by an independent certified public
accountant with copies of the auditor's statement, reflecting Tenant's then
current financial condition, or the financial condition of the individuals
comprising Tenant, in such form and detail as Landlord may reasonably request.
Any financial statements provided by Tenant to Landlord hereunder shall be
treated as confidential information by Landlord, except to the extent
information contained therein has otherwise been made public or is publicly
available. If Landlord shares such financial statements with any lender,
prospective purchaser or partner, each such party shall be informed of this
confidentiality obligation. In addition, if Landlord finances the construction
of the Building, or otherwise procures financing secured by the Building or the
Real Property, or any portion thereof or interest therein, then the terms and
provisions of this Lease may be subject to review and approval by the source
providing such financing.

        14.17   No Joint Venture. This Lease shall not be construed to create a
partnership, joint venture or similar relationship or arrangement between
Landlord and Tenant hereunder.

        14.18   Successors and Assigns. Except as otherwise provided herein,
this Lease shall be binding upon and inure to the benefit of Landlord, its
successors and assigns; and shall be binding upon and inure to the benefit of
Tenant, its successors, and to the extent assignment may be approved by Landlord
hereunder, Tenant's assigns.

        14.19   Applicable Law. All rights and remedies of Landlord and Tenant
under this Lease shall be construed and enforced according to the laws of the
State of Washington. Any actions or proceedings brought under this Lease, or
with respect to any matter arising under or out of this Lease, shall be brought
and tried only in courts located in the County of King, Washington (excepting
appellate courts).

        14.20   Time of the Essence; Force Majeure. Time is of the essence of
each and every covenant herein contained. If either party to this Lease, as the
result of any (i) strikes, lockouts, or labor disputes; (ii) failure of power or
other utilities; (iii) inability to obtain labor or materials or reasonable
substitutes therefor; (iv) war, governmental action, court order, condemnation,
civil unrest, riot, fire or other casualty; (v) extreme or unusual weather
conditions, acts of God or unforeseen soil conditions; or (vi) other conditions
similar to those enumerated in this Section beyond the reasonable control of the
party obligated to perform (except for financial inability) (collectively,
"Force Majeure,") fails punctually to perform any obligation on its part to be
performed under this Lease, then such failure shall be excused and not be a
breach of this Lease by the party in question but only to the extent occasioned
by such event. If any right or option of either party to take any action under
or with respect to this Lease is conditioned upon the same being exercised
within any prescribed period of time or at or before a named

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<PAGE>

date, then such prescribed period of time and such named date shall be deemed to
be extended or delayed, as the case may be, for a period equal to the period of
the delay occasioned by any event described above. Notwithstanding anything
herein contained, however, the provisions of this Section shall not be
applicable to Tenant's obligation to pay Rent under this Lease or its
obligations to pay any other sums, monies, costs, charges or expenses required
to be paid by Tenant hereunder.

        14.21   Interpretation. Except as specifically provided otherwise in
this Lease, Landlord may act in its sole and absolute discretion when required
to act hereunder or when deciding to grant its approval of any Tenant act. The
term, "including" shall mean "including, without limitation." All indemnities
contained herein shall survive termination of this Lease with respect to any
act, condition or event that is the subject matter of such indemnity and that
occurs prior to the Expiration Date. Notwithstanding anything herein to the
contrary, all provisions of this Lease which require the payment of money or the
delivery of property after the Expiration Date shall survive termination of this
Lease.

        14.22   Parking. Tenant shall have the right to purchase parking
stickers and/or cards equal to the number of parking passes (the "Parking
Passes") calculated as set forth in Item 13 of the Basic Lease Information
Sheet, which number shall include Tenant's Proportionate Share of any carpool
spaces Landlord is required to provide or maintain by any governmental
authority. The number of Parking Passes shall increase by one (1) for each one
thousand five hundred (1,500) square feet of Useable Area on which Tenant begins
to pay Rent hereunder. Tenant shall notify Landlord at least thirty (30) days
prior to the date estimated by Landlord for delivery of possession of each
portion of the Premises as to the number of Parking Passes Tenant wishes to
purchase, such number shall be made available to Tenant during the Term and, if
Tenant elects to purchase less than all available Parking Passes associated with
such portion of the Premises then Tenant's rights with respect to the Parking
Passes not purchased shall automatically lapse and be of no further force nor
effect; provided, however, that Tenant shall have the right, exercisable by
providing written notice to Landlord within sixty (60) days after the
commencement of Rent on each such portion of the Premises (which as referred to
herein shall mean the Minimum Initial Premises, the Hold Space, each increment
of Expansion Space and any Offer Space), within which to adjust the number of
Parking Passes desired by Tenant with respect to such portion of the Premises.
Tenant shall have a separate, one-time right to reduce the number of Parking
Passes purchased by it under this Section 14.22 by providing written notice to
Landlord within one (1) year from the date Rent has commenced on all of the
Initial Premises, subject to the following conditions: (a) no Event of Default
shall have occurred at the time of the giving of such notice or on the reduction
date (which date shall be designated by Tenant in its notice, but in no event
earlier than thirty (30) days from the date of such notice), which has not been
cured during the applicable cure period; and (b) the reduction of Parking Passes
permitted to be made under such right shall be specified in Tenant's notice and
shall not exceed ten percent (10%) of the then total number of Parking Passes
purchased by Tenant hereunder. In addition, Tenant shall have the continuing
right to reduce the number of Parking Passes purchased by it under this Section
14.22 by providing written notice to Landlord within thirty (30) days after each
increase by Landlord in the monthly Parking Pass fee, subject to the following
conditions: (i) no Event of Default shall have occurred at the time of the
giving of any such notice or on the reduction date (which date shall be
designated by Tenant in its notice, but in no event earlier than thirty (30)
days from the date of such notice); and (ii) the reduction of Parking Passes
permitted to be made under any such notice shall be specified in Tenant's notice
and shall not exceed ten percent (10%) of the then total number of Parking
Passes purchased by Tenant hereunder. Tenant shall pay the monthly fee per
Parking Pass established by Landlord from time to time for the applicable type
of permit (based on its published monthly fee schedule for the Building), plus
any tax or assessment imposed by any governmental authority in connection with
such parking privileges. Each Parking Pass shall entitle the vehicle on which
the Parking Permit is presented to park in the parking garage located beneath
the Building (the "Garage") 24 hours per day, 7 days per week, on a
nonpreferential and nonexclusive basis. Landlord shall have exclusive control
over the day-to-day operations of the Garage. No specific spaces in the Garage
shall be assigned to Tenant. Landlord may make, modify and enforce reasonable
rules and regulations relating to the parking of

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<PAGE>

vehicles in the Garage, and Tenant shall abide by such rules and regulations and
shall cause its employees and invitees to abide by such rules and regulations.
Landlord shall used good faith efforts to apply such rules and regulations on a
uniform basis as to all parkers and users of the Garage. In lieu of providing
parking stickers or cards, Landlord may use any reasonable alternative means of
identifying and controlling vehicles authorized to be parked in the Garage.
Landlord may designate areas within the Garage for short term or nontenant
parking only and Landlord may change such designations from time to time.
Landlord reserves the right to alter the size of the Garage and the
configuration of parking spaces and driveways therein. Landlord may assign any
unreserved and unassigned parking spaces and/or make all or a portion of such
spaces reserved or institute any other measures, including but not limited to
valet, assisted or tandem parking, that Landlord determines are necessary or
desirable for tenant requirements or orderly and efficient parking. Landlord
shall include and maintain in the Garage bicycle parking spaces or areas which
meet or exceed the requirements of applicable Laws or permits for the Building.

        Landlord may operate the Garage or, in its discretion, may arrange for
the Garage to be operated by a third party and, for purposes of this Section
14.22, such operator shall be entitled to exercise any rights granted to
Landlord under this Section. Upon request, Tenant will execute and deliver a
parking agreement with the operator of the Garage on the operator's standard
form of agreement used with monthly parkers. If Landlord hires a third party to
operate the Garage then the monthly parking charges shall be paid to such
operator at such place as the operator may direct but the parking charges shall
be considered additional Rent hereunder.

        14.23   Brokers. Tenant and Landlord each represent and warrant to the
other that it has had no dealing with any broker or agent other than the
Broker(s) identified in the Basic Lease Information Sheet as Item 16, and
Landlord agrees to indemnify and hold Tenant harmless from and against any
claims for commissions due such Broker(s). Tenant and Landlord shall each
indemnify, defend and hold the other party harmless from and against any and all
liabilities for commissions or other compensation or charges claimed by any
other broker or agent based on dealings with the indemnifying party with respect
to this Lease. The foregoing indemnities shall survive termination or earlier
expiration of this Lease.

        14.24   Arbitration of Certain Disputes.

                (a)     Limited General Arbitration. All disputes between the
parties to this Lease arising out of or relating to (i) the applicability and
duration of Tenant Delays (other than Tenant Delays disclosed in any change
order which Tenant has initiated or otherwise approved under Paragraph 15 on
Exhibit C) and the applicability and duration of Force Majeure delays (other
than circumstances where Tenant is seeking to exercise any termination right
provided to it in this Lease); (ii) the planning, design, management,
administration, bidding, construction, and Substantial Completion of the Base
Building Improvements, the Tenant Improvements, and the Tenant Extra
Improvements pursuant to Exhibit C (but excluding disputes relating to the cost
of such work or Tenant's share thereof); (iii) matters relating to tenantability
and rent abatement under Article 12; and (iv) exercise of self help rights by
Tenant under Section 13.7, shall be decided by arbitration in accordance with
the then applicable rules of the American Arbitration Association ("AAA"),
unless the parties mutually agree otherwise.

        Notice of the demand for arbitration shall be filed in writing with the
other party to this Lease and with the AAA. The demand shall be made within a
reasonable time after the dispute, or other matter in question, has arisen. This
agreement to arbitrate shall be specifically enforceable under prevailing state
or federal arbitration law. A single arbitrator experienced in commercial real
property leases or commercial office building construction, whichever may be
most appropriate given the nature of the dispute, shall arbitrate the dispute,
provided that if the parties cannot agree on an arbitrator within ten (10) days
following a party's initial demand for arbitration each party shall select an
arbitrator and the two arbitrators so selected shall select a third arbitrator.
The panel of three arbitrators shall then arbitrate the dispute.

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<PAGE>

        Except as may be otherwise agreed by the parties to this Lease, the
arbitration shall be conducted in accordance with the AAA Commercial Arbitration
Rules with Expedited Procedures, in effect on the date hereof, as modified by
this section. There shall be no dispositive motion practice. As may be shown to
be necessary to ensure a fair hearing the arbitrator(s) may authorize limited
discovery and may enter pre-hearing orders regarding (without limitation)
scheduling, document exchange, witness disclosure and issues to be heard. The
arbitrator(s) shall not be bound by the rules of evidence or of civil procedure,
but may consider such writings and oral presentations as reasonable business
people would use in the conduct of their day-to-day affairs, and may require the
parties to submit some or all of their case by written declaration or such other
manner of presentation as the arbitrator(s) may determine to be appropriate. The
parties intend to limit live testimony and cross-examination to the extent
necessary to ensure a fair hearing on material issues.

        The arbitrator(s) shall take such steps as may be necessary to hold a
private hearing within thirty (30) days following the date all such arbitrators
have been selected and to conclude the hearing within two (2) days; and the
arbitrator's written decision shall be made not later than seven (7) calendar
days after the hearing. The parties have included these time limits in order to
expedite the proceeding, but they are not jurisdictional, and the arbitrator(s)
may for good cause allow reasonable extension or delays, which shall not affect
the validity of the award. The written decisions shall contain a brief statement
of the claim(s) determined and the award made on each claim. In making the
decision and award, the arbitrator(s) shall apply applicable substantive law.
Absent fraud, collusion or willful misconduct by the arbitrator(s), the award
shall be final, and judgment may be entered in any court having jurisdiction
thereof. The arbitrator(s) may award injunctive relief or any other remedy
available from a judge, including the joinder of parties or consolidation of
this arbitration with any other involving common issues of law or fact or which
may promote judicial economy, and may award attorneys' fees and costs to the
prevailing party but shall not have the power to award punitive or exemplary
damages. Venue of any arbitration conducted pursuant to this paragraph shall be
in Seattle, Washington.

                (b)     Arbitration of Re-measurement Disputes. All disputes
between Landlord and Tenant regarding application of the standards used, or the
results of, a re-measurement under Section 1.1(d) by shall resolved through
arbitration in accordance with this Section 14.24(b).

        If either party objects to the re-measurement calculations or
application of measurement standards under Section 1.1(d), such party shall
deliver within forty (40) Business Days after receipt of such re-measurement an
arbitration demand. Within ten (10) Business Days following delivery of an
arbitration demand, the parties shall mutually select one (1) arbitrator who is
a natural person not employed by either of the parties or any parent or
affiliated partnership, corporation or other enterprise thereof, who shall also
be an architect, design or construction professional with at least ten (10)
years experience in the downtown Seattle Class-A or higher office real estate
market. If the parties do not so agree, then either party, on behalf of both,
may request appointment of such a qualified person by the AAA. Request for
appointment shall be made in writing with a copy given to the other party. The
arbitrator so selected shall decide the dispute, if it has not previously been
resolved, by following the procedure set forth below. The arbitrator shall state
in writing his or her determination of the Net Rentable Area and Useable Area
applying the standards set forth in Section 1.4, supported by the reasons
therefor, and shall deliver a copy to each party. The arbitrator shall complete
its determination within ten (10) Business Days after appointment. The decision
of the arbitrator shall be final and binding upon the parties. Each party shall
pay the fees and costs of its own counsel. The parties shall share the costs of
the arbitrator. The arbitrator shall have no power to modify the provision of
this Lease. If any arbitrator fails, refuses or is unable to act, his or her
successor shall be appointed in the same manner as provided for appointment of
the third arbitrator.

        14.25   Building Development. Tenant acknowledges that some portion of
the Building or Common Areas may be under construction after the Term commences
or may not be constructed at all.

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Tenant shall have no claim against Landlord for any loss or damage relating to
such construction or lack of construction so long as Substantial Completion has
occurred as provided in Exhibit C.

        14.26   Roof Access. Tenant shall have the right to install, maintain
and repair a satellite dish or antenna (the "Antenna") on the roof of the
Building for Tenant's general business purposes (but not for use by any third
party) at Tenant's sole cost and expense. The right granted herein is personal
to IDX Systems Corporation and any Qualified Transferee and shall not be
assignable to any other party in connection with any assignment of this Lease or
any sublease of all or any part of the Premises. Tenant may not grant any other
party any right to use the Antenna for any purpose whatsoever. The design,
appearance, size, location and method of installation of the Antenna shall be
subject to all applicable laws and regulations and Landlord's approval, which
shall not be unreasonably withheld, but may be withheld if in Landlord's sole
discretion the size or appearance proposed will adversely affect the appearance
or character of the Building. Landlord does not represent that the Antenna will
be permitted under applicable laws or that the Antenna will function and Tenant
shall be solely responsible for designing the Antenna to comply with laws and to
be compatible with the design of the Building and the other equipment located on
the roof. If at any time the Antenna ceases to be permitted under applicable
laws, Tenant's rights under this Section shall terminate and be of no further
force and effect. Upon termination of Tenant's rights under this Section or upon
Lease termination, Tenant at its sole cost and expense shall promptly remove the
Antenna and all related wiring and equipment from the Building and shall restore
the Building to its condition prior to such installation. Tenant shall be solely
responsible for installation and maintenance of the Antenna and shall ensure
that installation and maintenance do not void or limit any warranty Landlord may
have on the roof or roof membrane. Tenant shall provide Landlord with full plans
and specifications for the Antenna prior to installation thereof and such plans
shall include details regarding Tenant's proposed method of installation. Tenant
shall be permitted to install, maintain, remove and replace cables or lines
within the Building outside the Premises (at locations designated by Landlord)
to connect the Antenna to the Premises at no charge to Tenant, as provided in
and limited by Section 6.3 above. Prior to commencement of any work hereunder,
Tenant shall obtain and deliver to Landlord all necessary governmental permits
for the Antenna and related equipment. Tenant shall indemnify and hold harmless
Landlord from any Claims arising out or in connection with the Antenna or the
related equipment in the Building. Tenant acknowledges and agrees that Landlord
has not represented or warranted that Tenant will have unlimited access to riser
space or other space outside the Premises for the purpose of the
telecommunications equipment serving the Premises and Landlord shall have no
obligation to construct or designate additional riser space or equipment space
to accommodate the telecommunications equipment. Tenant acknowledges that riser
space is a finite commodity and that Landlord may in its discretion limit
Tenant's total use of such space to accommodate and take into account use of the
Building systems and the needs of other Building tenants.

        14.27   Conference Center. Landlord may in its sole discretion
construct, operate and maintain a conference center for use by Building tenants,
including Tenant, in accordance with rules and procedures promulgated by
Landlord. Tenants in the Building (including Tenant) desiring use of the
conference center shall be charged a use fee as determined by Landlord and all
costs associated (including allocated rental) with the conference center shall
be excluded from Operating Costs. Tenant shall have the right to use the
conference center for a reasonable period of time in approximate proportion to
the size of the Premises, subject to payment of the applicable use fee. The
size, location and design of, and improvements in, the conference center, if
any, shall be subject to Landlord's sole discretion.

        14.28   Tenant's Generator; Emergency Cooling. Landlord shall provide
Tenant with approximately three hundred (300) square feet of space in a location
designated by Landlord for installation and maintenance of a diesel fuel powered
generator and a diesel fuel tank (collectively, "Tenant's Generator"). Tenant
shall be solely responsible for complying with all laws, rules and regulations
with respect to Tenant's Generator and, prior to commencement of installation
Tenant shall obtain all necessary governmental permits therefor. Tenant shall
obtain insurance (naming Landlord as

                                       50

<PAGE>

an additional insured) insuring against any loss or damage arising out of or
relating to any contamination or release of such fuel and shall not be permitted
to install the fuel tank until Tenant has provided a certificate of such policy
to Landlord. Tenant shall be permitted to install, maintain, remove and replace
cables or lines within the Building outside the Premises to connect Tenant's
Generator to the Premises and to exhaust fumes, at no charge to Tenant, but at
locations designated by Landlord. Tenant shall pay Landlord as Rent the sum of
Sixteen Dollars ($16.00) per year per square foot of Useable Area for the space
occupied by Tenant's Generator. Prior to the end of the Lease Term, Tenant shall
remove Tenant's Generator and associated equipment (including the diesel fuel
tank) and properly dispose of same and shall restore the Building to its
condition prior to installation of Tenant's Generator. If Tenant's Generator
fails to work properly or to provide power to the Premises, Landlord shall have
no obligation or liability whatsoever with respect to such failure. Tenant shall
pay all costs of designing, installing, operating and maintaining Tenant's
Generator. Tenant acknowledges that Tenant's Generator will be separate and
apart from any generator (and fuel tank) which Landlord may elect to install to
serve the entire Building. Tenant acknowledges and agrees that Landlord has not
represented or warranted that Tenant will have unlimited access to riser space
or other space outside the Premises for the purpose of Tenant's Generator, and
Landlord shall have no obligation to construct or designate additional space to
accommodate Tenant's Generator. Tenant acknowledges that roof and riser space
are a finite commodity and that Landlord may in its discretion limit Tenant's
total use of such space to accommodate and take into account use of the Building
systems and the needs of other Building tenants, subject to the minimum riser
numbers and size identified in Section 6.3 above.

        Tenant desires that the mechanical systems serving the Computer Room be
connected to Tenant's Generator for purposes of providing emergency back-up
electrical service. Landlord and Tenant shall cooperate in good faith to design
such mechanical systems to permit such connection in an efficient and effective
manner. Notwithstanding the foregoing, Tenant acknowledges and agrees that
Landlord shall have no liability to Tenant with respect to the failure of such
connections.

        Landlord and Tenant shall cooperate to provide 24 hour emergency cooling
to the Computer Room, at Tenant's cost and expense, at a location and in a
manner that is mutually acceptable to Landlord and Tenant.

        14.29   Tax Deferral. Portions of construction of the Tenant
Improvements may be eligible for deferral of state and local sales and use taxes
pursuant to RCW Chapter 82.63 and WAC 458-20-24003 because Tenant will use the
Premises for high technology research and development. Promptly following
execution of this Lease, Landlord and Tenant shall prepare and shall cooperate
in processing an application with the Washington State Department of Revenue for
a deferral of state and local sales and use taxes; however, if the application
is not approved by the Department of Revenue in a timely manner Landlord shall
not be required to delay commencement of construction of the Building or the
Tenant Improvements. Landlord and Tenant shall cooperate to prepare and each
shall execute any accurate certificates or other documents required by the
Department of Revenue to maintain the tax deferral. Landlord hereby agrees that,
to the extent Landlord realizes cost savings because of the tax deferral,
Landlord shall pass the economic benefit to Tenant in the form of reduced rent
payments pursuant to the terms hereof.

                (a)     Calculation of Tax Credit. If the application for a tax
deferral is accepted and a sales and use tax deferral certificate is issued,
then so long as repayment is not required under RCW 82.63.045 or any other
statute or regulation, Landlord agrees to grant Tenant an annual credit (the
"Tax Credit") against Rent during Lease Years 2 through 9 in an amount equal to
the percentage of the tax deferral that is no longer subject to recapture as of
the beginning of such year. The Tax Credit applicable to any Lease Year shall be
divided into twelve (12) equal amounts and credited against Rent due in each
month of the following Lease Year. For example, if the total tax deferral is
$120,000 and as of the last day of the first Lease Year twelve and one-half
percent (12.5%) of the tax is no longer subject to recapture, the total Tax
Credit in the second Lease Year would be $15,000 or $1,250 per month. If the

                                       51

<PAGE>

statutory schedule for the tax deferral is extended, then the schedule for the
Rent Credit shall be adjusted to conform to the longer deferral period.

                (b)     Repayment. Tenant acknowledges that all or a portion of
the deferred taxes may be required to be paid if the use of the Premises ceases
to qualify for the tax deferral. In the event the state and local sales and use
taxes are deferred, and if for any reason, any part of the taxes so deferred is
subsequently required to be paid, then Tenant shall promptly reimburse Landlord
for the total amount of taxes that Landlord is required to pay, together with
any penalties, interest or other charges that are or become due in connection
with such taxes. Tenant shall indemnify, defend and hold harmless Landlord from
any and all costs, expenses and claims arising out of or related to any deferral
of state and local sales and use taxes for the Tenant Improvements.

        14.30   Storage Space. Storage space to be located in the Garage (the
"Storage Space") shall be available for lease by Tenant on a first come, first
served basis. If Tenant desires to lease any Storage Space, Tenant shall notify
Landlord in writing and shall state the square footage of Storage Space desired
to be leased. Landlord shall make reasonable efforts to accommodate Tenant's
request. The build-out of any such Storage Space shall be in accordance with
plans reasonably agreed upon by Landlord and Tenant. Tenant shall pay for the
build-out of the Storage Space, with any remaining Cash Allowance applying to
such costs. If Tenant has exhausted the Cash Allowance, then Tenant shall pay
Landlord directly for the cost and expense of any build-out of the Storage Space
requested by Tenant. The rental fee per rentable square foot of Storage Space
("Storage Rent") shall be determined at the time that Tenant submits its request
to lease such Storage Space and shall be equal to fifty percent (50%) of
Tenant's average per square foot Base Rent for the Premises at such time,
adjusted as Base Rent is adjusted from time to time. Tenant may permanently
cancel its lease of Storage Space upon sixty (60) days' prior written notice to
Landlord.

        14.31   Move-In. The Premises shall be cleaned at no additional cost to
Tenant prior to Tenant's initial move into the Initial Premises and any
Expansion Space. Landlord shall furnish, without charge, such air conditioning,
light and power as may be reasonably required in the Premises, elevator service,
including the Building service elevator, and the services or operations for such
elevators (if needed) during Tenant's initial move into each such space. Tenant
shall schedule each initial move-in in advance with Landlord and each such
move-in shall be completed during the period commencing 7:00 p.m. Friday and
ending 5:00 a.m. Monday. Tenant shall also comply with Landlord's standard and
reasonable policies, rules and regulations regarding moves into the Building,
and Tenant acknowledges that Landlord's Contractor (and its subcontractors) will
be working in and around the Building at the time of such move-ins. With respect
to the move by Tenant into the Minimum Initial Premises, Landlord agrees that
Tenant will be the only tenant moving into the Building on the initial weekend
identified by Tenant and Tenant shall have (a) reasonable truck access through
the alley and into the loading dock area of the Building, (b) exclusive use of
three (3) loading dock bays, and (c) exclusive use of four (4) elevators (fully
padded and protected) serving the Premises (although Landlord's elevator
contractor may be permitted access thereto for purposes of completing Landlord's
Work therein) and nonexclusive use of the Building service elevator. Landlord
shall also provide on site during Tenant's move such personnel to operate
Building Systems and provide access to the elevators, loading dock and elsewhere
in the Building as reasonably necessary to effect such move.

                                       52

<PAGE>

        IN WITNESS WHEREOF, the parties hereto have executed this Lease as of
the day and year first above written.

        LANDLORD:                    NATIONAL OFFICE PARTNERS LIMITED
                                     PARTNERSHIP, a Delaware limited partnership

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

        TENANT:                      IDX SYSTEMS CORPORATION,
                                     a Vermont corporation

                                     By: /s/ John A. Kane
                                        ----------------------------------------
                                     Name: John A. Kane
                                          --------------------------------------
                                     Title: CFO
                                           -------------------------------------

STATE OF WASHINGTON        )
                           ) ss.
COUNTRY OF KING            )

        On this _____ day of ______________, 2000, before me, a Notary Public in
and for the State of Washington, personally appeared _________________________,
personally known to me (or proved to me on the basis of satisfactory evidence)
to be the person who executed this instrument, on oath stated that he/she was
authorized to execute the instrument, and acknowledged it as the
___________________________________ of NATIONAL OFFICE PARTNERS LIMITED
PARTNERSHIP to be the free and voluntary act and deed of said limited
partnership for the uses and purposes mentioned in the instrument.

        IN WITNESS WHEREOF, I have hereunto set my hand and official seal the
day and year first above written.

                              --------------------------------------------------
                              NOTARY PUBLIC in and for the State of  Washington,
                              residing at_______________________________________

                              My appointment expires____________________________

                              Print Name________________________________________

                                       53

<PAGE>

STATE OF VERMONT           )
                           ) ss.
COUNTRY OF CHITTENDEN      )

        On this 28th day of March, 2000, before me, a Notary Public in and for
the State of Washington, personally appeared John A. Kane, personally known to
me (or proved to me on the basis of satisfactory evidence) to be the person who
executed this instrument, on oath stated that he was authorized to execute the
instrument, and acknowledged he is the CFO of IDX SYSTEMS CORPORATION to be the
free and voluntary act and deed of said corporation for the uses and purposes
mentioned in the instrument.

        IN WITNESS WHEREOF, I have hereunto set my hand and official seal the
day and year first above written.
                                           /s/  Diane L. Brown
                                           -------------------------------------
                                           NOTARY PUBLIC in and for the State of
                                           Vermont residing at Burlington
                                           My appointment expires 02/10/2003
                                           Print Name Diane L. Brown

                                       54

<PAGE>

Landlord Signature Block for lease dated March 23,2000
Between National Office Partners Limited Partnership and IDX Systems
Corporation.

NATIONAL OFFICE PARTNERS LIMITED PARTNERSHIP,
A Delaware limited partnership

By:      Hines National Office Partners Limited Partnership
         A Texas limited partnership
         general partner

         By:      Hines Fund Management, L.L.C.,
                  A Delaware limited liability company,
                  general partner

                  By:      Hines Interests Limited Partnership,
                           A Delaware limited partnership
                           Sole member

                           By:   Hines Holdings, Inc.,
                                 A Texas Corporation
                                 its general partner

                           By:   /s/ Daniel MacEachron
                                 ---------------------
                                 Daniel MacEachron
                                 Vice President

<PAGE>

CALIFORNIA ALL-PURPOSE ACKNOWLEDGMENT

        State of California
                                     ss.
        Country of San Francisco

        On April 6, 2000, before me, Shannon Blair Jensvold, Notary Public
        personally appeared Daniel Mac Eachron

                                    [X] personally known to me
                                    [ ] proved to me on the basis of
                                    satisfactory evidence

                                    to be the person whose name is
                                    subscribed to the within instrument and
                                    acknowledged to me that he executed the
                                    same in his authorized capacity, and
                                    that by his signature on the instrument
                                    the person, or the entity upon behalf of
                                    which the person acted, executed the
                                    instrument.

                                    WITNESS my hand and official seal.

[SEAL OF SHANNON BLAIR JENSVOLD
 APPEARS HERE]                      /s/ Shannon Blair Jensvold
                                    -----------------------------------
   Place Notary Seal Above              Signature of Notary Public

<PAGE>

                                    EXHIBIT A

                          STACKING PLAN OF THE PREMISES

                                       A-1

<PAGE>

                                    EXHIBIT A

                                IDX STACKING PLAN

[GRAPHIC APPEARS HERE]

[LOGO OF MADISON]

<PAGE>

                                    EXHIBIT B

                     LEGAL DESCRIPTION OF THE REAL PROPERTY

LOTS 1, 2, 3, 4, 5 AND 8 IN BLOCK 21 OF ADDITION TO THE TOWN OF SEATTLE, AS LAID
OUT ON THE CLAIMS OF C.D. BOREN AND A.A. DENNY AND H.L. YESLER (COMMONLY KNOWN
AS C.D. BOREN'S ADDITION TO THE CITY OF SEATTLE), AS PER PLAT RECORDED IN VOLUME
1 OF PLATS, PAGE 25, RECORDS OF KING COUNTY;

EXCEPT THE WESTERLY 9 FEET THEREOF CONDEMNED IN KING COUNTY SUPERIOR COURT CAUSE
NO. 54135 FOR THE WIDENING OF THIRD AVENUE, AS PROVIDED BY ORDINANCE NO. 14345
OF THE CITY OF SEATTLE;

SITUATE IN THE CITY OF SEATTLE, COUNTY OF KING, STATE OF WASHINGTON.

                                       B-1

<PAGE>

                                    EXHIBIT C

                       INITIAL IMPROVEMENT OF THE PREMISES

        1.      Base Building. Landlord shall construct or install those items
listed on the attached Schedule C-l attached hereto (collectively, "Base
Building Improvements") without cost or expense to Tenant. The Base Building
Improvements shall be based on the Building Schematic Design Plans, with such
modifications as may be required by the City of Seattle or otherwise adopted by
Landlord for value- engineering or aesthetic purposes. Landlord shall be solely
responsible for the design and construction of the Base Building Improvements
and Landlord shall have no obligation to alter any portion thereof to
accommodate the Tenant Improvements. If Tenant desires any changes, relocations
or other modifications or upgrades to the Base Building Improvements to
accommodate the Tenant Improvements, Tenant shall hire Landlord's architect to
prepare any necessary changes to the Building plans. Such modifications must be
approved by Landlord's architect and by Landlord in writing. Landlord's approval
may be given, withheld or subject to such conditions as Landlord in its sole
discretion desires. The expense of Landlord's architect shall be paid by Tenant.
Tenant shall pay Landlord for the actual costs associated with any changes to
the Base Building Improvements approved by Landlord (including additional
architectural and engineering fees), plus an administrative fee equal to Three
and 75/100 percent (3.75%) of the costs of such modifications.

        2.      Improvements. Any work in addition to Base Building Improvements
is referred to herein as "Tenant Improvements" and shall be furnished and
installed within the Premises substantially in accordance with the plans and
specifications to be prepared by the Architect and approved by Landlord and
Tenant in accordance with this Exhibit C. Other than Tenant's Work as provided
below, all Tenant Improvements shall be furnished and installed by Landlord at
the expense of Tenant, except for the amount of the Cash Allowance (as defined
in Paragraph 14 below). For purposes hereof, the cost of the Tenant Improvements
shall include all costs associated with the design and construction of the
Tenant Improvements, including, without limitation, all building permit fees,
payments to design consultants for services and disbursements (including costs
associated with design changes required by the Architect or its errors and
omissions insurance carrier), all preparatory work (if any), premiums for
insurance and bonds (if any), such inspection fees (including City of Seattle
inspections) as Landlord may incur, reimbursement to Landlord for permit and
other fees Landlord may actually incur that are fairly attributable to the
Tenant Improvement work and the cost of installing any additional HVAC or
electrical capacity or telecommunications capacity required by Tenant. All
direct personnel costs of Landlord in reviewing Tenant's plans for the Tenant
Improvement (including changes to the Base Building Improvements) are included
in the administrative fee due Landlord under Section 9(e) below. Within a
reasonable time following execution of the Lease, Landlord shall provide Tenant
with a general budget and description of the various costs and fees customarily
expected to be incurred in connection with the design and construction of the
Tenant Improvements (including cost estimates for work expected to be provided
by consultants to be retained under Paragraph 3 below), which shall be
preliminary in nature for information purposes only to assist Tenant in its
planning.

        3.      Tenant's Architect. Tenant, at its sole cost and expense, shall
hire an architect or other space planning company selected by Tenant and
reasonably approved by Landlord ("Tenant's Architect") to design the Tenant
Improvements, to complete the Working Drawings and to obtain all required
building or other permits to allow construction of the Tenant Improvements in
the Premises. Tenant's Architect shall, on Tenant's behalf, retain the
consultants designing the Building's structural, mechanical, electrical, and
plumbing systems to design these components of the Tenant Improvements (and
Landlord hereby agrees not to disclose to such consultants that they are "sole
source" providers). Tenant shall be responsible for ensuring that Tenant's
Architect coordinates its work with the architect designing the Base Building
Improvements ("Landlord's Architect"). The cost of preparing all plans and
specifications for the Tenant Improvements (including without limitation the
Conceptual Plans and the Working Drawings), the cost of preparing any changes
thereto (except as provided to the contrary in

                                       C-1

<PAGE>

Paragraph 6 below) and the cost of obtaining all required permits shall be paid
by Tenant, although Tenant may apply a portion of the Cash Allowance (not to
exceed Three Dollars ($3.00) per square foot of Useable Area) to the payment of
such costs. Landlord shall reimburse Tenant from the Cash Allowance for Tenant's
reasonable, actual design costs incurred, within a reasonable period of time
following Landlord's receipt of invoices therefor and appropriate back-up
information, but subject to the limitation set forth in the preceding sentence.

        4.      Submittal of Conceptual Plans. Tenant shall submit to Landlord
conceptual plans for the Tenant Improvements, including architectural,
electrical, mechanical and reflected ceiling drawings (the "Conceptual Plans")
by no later than the Target Date set forth in Paragraph 20 below. Within a
reasonable time following receipt of the Conceptual Plans, Landlord shall,
review, comment on and return the Conceptual Plans to Tenant, marked "Approved,"
"Approved as Noted" or "Disapproved as Noted, Revise and Resubmit." Such
Conceptual Plans shall be for the general information of Landlord, and to assist
in the coordination of the design and construction of the Tenant Improvements,
and failure to respond to the Conceptual Plans shall not constitute approval by
Landlord of the design or specifications shown thereon.

                (a)     If the Conceptual Plans are returned to Tenant marked
"Approved," the Conceptual Plans shall be deemed approved by Landlord and the
procedure set forth in Paragraph 5 below shall be followed.

                (b)     If the Conceptual Plans are returned to Tenant marked
"Approved as Noted," the Conceptual Plans so submitted shall be deemed approved
by Landlord; provided, however, in preparing the Working Drawings, Tenant shall
cause Tenant's Architect to incorporate Landlord's noted items into the Working
Drawings.

                (c)     If the Conceptual Plans are returned to Tenant marked
"Disapproved as Noted, Revise and Resubmit," Tenant shall cause the Conceptual
Plans to be revised, taking into account the reasons for Landlord's disapproval
(which shall be noted in writing), and shall resubmit revised plans to Landlord
for review within a reasonable period of time after return of the Conceptual
Plans to Tenant by Landlord. The same procedure shall be repeated until Landlord
approves the Conceptual Plans. Tenant shall use good faith efforts to cause the
Conceptual Plans to be revised and resubmitted in time to meet the Target Date
for approval set forth in Paragraph 20 below. Landlord shall not be required to
review the Conceptual Plans more than two (2) times and if Landlord does not
approve the second set of Conceptual Plans Landlord may elect to terminate this
Lease by written notice to Tenant.

                (d)     In the event the Conceptual Plans are returned to Tenant
under either subsections (b) or (c) above, Landlord shall make itself available
upon reasonable notice to meet with Tenant and Tenant's Architect to discuss any
noted items and attempt to resolve the same cooperatively

        5.      Submittal of Working Drawings. Following Landlord's approval of
the Conceptual Plans, and after Landlord has provided Tenant with a set of final
plans for the Base Building Improvements ("Final Building Plans"), which
Landlord intends to deliver on or before November 1, 2000, Tenant shall deliver
to Landlord one (1) set of reproducible sepia and three (3) sets of blue-lined
prints of working drawings and specifications (hereinafter referred to
collectively as the "Working Drawings") for the Tenant Improvements. Tenant
shall also deliver to Landlord a diskette containing the Working Drawings in the
AutoCAD format (or other computer assisted design format approved by Landlord)
("CAD"). The Working Drawings shall be consistent with, and a logical extension
of, the Conceptual Plans approved by Landlord. Within Twenty (20) Business Days
after receipt of the draft Working Drawings from Tenant, Landlord shall return
to Tenant one (1) sepia set of the Working Drawings marked "Approved," "Approved
as Noted" or "Disapproved as Noted, Revise and Resubmit"; provided, however,
that failure to respond to the Working Drawings shall not constitute approval by
Landlord of the design or specifications shown thereon.

                                       C-2

<PAGE>

                (a)     If the Working Drawings are returned to Tenant marked
"Approved," the Working Drawings, as so submitted, shall be deemed approved by
Landlord.

                (b)     If the Working Drawings are returned to Tenant marked
"Approved as Noted," the draft of the Working Drawings shall be deemed approved
by Landlord; provided, however, in preparing the final approved Working
Drawings, Tenant shall cause Tenant's Architect to incorporate Landlord's noted
items into the Working Drawings.

                (c)     If the Working Drawings are returned to Tenant marked
"Disapproved as Noted, Revise and Resubmit," Tenant shall cause such Working
Drawings to be revised, taking into account the reasons for Landlord's
disapproval (which shall be noted in writing) and shall resubmit revised plans
to Landlord for review. The same procedure shall be repeated until Landlord
fully approves the Working Drawings.

                (d)     Tenant shall be solely responsible for: (i) the
completeness of the Working Drawings; (ii) the conformity of the Working
Drawings with the existing conditions in the Building and the Premises and to
the Final Building Plans provided by Landlord (including any changes in the
Final Building Plans provided by Landlord to Tenant), if the Working Drawings
are prepared prior to completion of Building construction (subject to potential
reimbursement of redesign costs as provided in Paragraph 6 below); (iii) the
compatibility of the Working Drawings with the Base Building Improvements as
depicted on the Final Building Plans, including the mechanical, plumbing, life
safety or electrical systems of the Building; and (iv) the compliance of the
Working Drawings with all applicable regulations, laws, ordinances, codes and
rules, including, without limitation, the Americans With Disabilities Act, with
respect to the Premises.

                (e)     In the event the Working Drawings are returned to Tenant
under subsections (b) or (c) above, Landlord shall make itself available upon
reasonable notice to meet with Tenant and Tenant's Architect to discuss any
noted items and attempt to resolve same cooperatively.

                (f)     When the Working Drawings are approved by Landlord and
Tenant, the parties shall each acknowledge their approval by signing or
initialing each sheet of the Working Drawings and Tenant shall promptly submit
the Working Drawings to the City of Seattle for permitting. Tenant shall also
deliver to Landlord a diskette containing the approved Working Drawings in the
CAD format.

        6.      Deadlines for Approval; Certain Modifications. Tenant shall
cause the Conceptual Plans and Working Drawings to be prepared by Tenant's
Architect, submitted to Landlord and, where required, revised so as to obtain
the approval of the Working Drawings by Landlord on or before Tenant's Working
Drawings Delivery Date as set forth in Item 14 of the Basic Lease Information
Sheet and in Paragraph 20 below, subject to extension on a day-for-day basis for
each day that Landlord's delivery of the Final Building Plans (as approved and
permitted by the City of Seattle) occurs after July 2, 2001. In the event
Landlord changes or modifies the Final Building Plans subsequent to Landlord's
delivery of the Final Building Plans to Tenant and such modified plans require
material changes to the Working Drawings (other than changes required by the
City of Seattle except for items not conforming to applicable codes at the time
of submission to the City and for which the City initially failed to note such
nonconformance prior to approving the Final Building Plans), then Landlord shall
reimburse Tenant for the actual design costs incurred in connection with
modifying the Working Drawings to the extent caused by such changes to the Final
Building Plans. Any such reimbursement hereunder shall be made within thirty
(30) days after Landlord's receipt of invoices and appropriate backup
documentation for such additional design costs, and shall not be credited
against or a reduction to the Cash Allowance.

        7.      Landlord's Review Responsibilities. Tenant acknowledges and
agrees that Landlord's review and approval, if granted, of all Conceptual Plans
and Working Drawings is solely for the benefit of Landlord and to protect the
interests of Landlord in the Building and the Premises, and Landlord shall not
be the guarantor of, nor in any way or to any extent responsible for, the
correctness or accuracy of any

                                       C-3

<PAGE>

Conceptual Plans or Working Drawings or of the compliance of the Conceptual
Plans or Working Drawings with applicable regulations, laws, ordinances, codes
and rules or of the conformance or compatibility of the Conceptual Plans or
Working Drawings with existing conditions in the Building or Premises or with
the Base Building Improvements to be constructed by Landlord.

        8.      Existing Conditions. Prior to commencement of construction of
the Tenant Improvements, Tenant shall require and be solely responsible for
insuring that its architects, engineers and contractors verify all existing
conditions in the Building, insofar as they are relevant to, or may affect, the
design and construction of the Tenant Improvements. Tenant shall be solely
responsible for the completeness of all plans for the Tenant Improvements and
for conformity of the plans with the Final Building Plans (including any changes
thereto provided by Landlord to Tenant, subject to potential reimbursement of
redesign costs as provided in Paragraph 6 above) and existing conditions in the
Building and the Premises. Tenant shall ensure that Tenant's Architect inspects
the Premises to verify existing conditions and construction prior to the start
of construction of the Tenant Improvements. Tenant shall notify Landlord
immediately following such inspection of any discrepancy discovered by Tenant or
Tenant's Architect between existing conditions and/or construction and the Final
Building Plans; otherwise, Landlord shall be conclusively deemed to have met its
obligations relating to the construction of the Premises to the extent the
Premises are complete as of the date of such inspection. In the absence of such
notice, Tenant shall be responsible for any modifications to the Working
Drawings necessary to accommodate existing conditions and construction. Subject
to the terms of Paragraph 19 below, Tenant shall be solely responsible for, and
Landlord specifically reserves the right to require Tenant to make at any time
and from time to time during the construction of the Tenant Improvements, any
changes to the Conceptual Plans and/or the Working Drawings necessary (a) to
obtain any permit, (b) to comply with all applicable regulations, laws,
ordinances, codes and rules, (c) to achieve the compatibility, as reasonably
determined by Landlord, of the Conceptual Plans and Working Drawings with the
Landlord's plans for Base Building Improvements, (d) to avoid impairing or
voiding any third-party warranties or (e) to respond to any redesign requests
from the TI Contractor for reasons of impracticability or impossibility of
construction as originally designed.

        9.      Pricing the Work. In order to obtain the cost benefit of a
construction schedule coordinated with the schedule for completion of the
Building Standard Improvements, the parties intend to retain the general
contractor completing the shell and core for the Building ("Building
Contractor") to construct the Tenant Improvements, although Landlord may elect
to solicit bids from other general contractors for the Tenant Improvements if,
in its opinion, the Building Contractor's bid is not acceptable. It is the
interest of the parties that the Initial Bid shall, to the extent practical, be
obtained from the Building Contractor at the same time as its bid on
construction of the Base Building Improvements. Landlord shall provide Tenant
with its list of prospective contractors prior to selection, Tenant shall have
the right to communicate in writing its concerns to Landlord regarding the
qualifications and experience of the prospective contractors and their project
teams and Landlord shall consider such concerns prior to selection, however the
final selection shall be in Landlord's discretion.

                (a)     Initial Bids. Upon approval of the Conceptual Drawings
by Landlord, Tenant shall cause Tenant's Architect to deliver to Landlord the
number of copies of the Conceptual Drawings which Landlord may reasonably
request for use in obtaining bids for the general terms and conditions and
general contractor's fee. Upon receipt of such copies, Landlord shall obtain a
bid from Building Contractor covering the general terms and conditions and the
general contractor's fee (the "Initial Bid"). Upon receipt of the Initial Bid
from the Building Contractor, if Landlord in its reasonable discretion does not
believe the Initial Bid reflects the anticipated costs savings, Landlord may
elect to solicit Initial Bids from other qualified general contractors selected
by Landlord. Landlord shall select a contractor (the "TI Contractor"), taking
into account, in Landlord's good faith judgment, all factors associated with the
bids, including without limitation, price, quality of materials to be used,
estimated completion time, and

                                       C-4

<PAGE>

Tenant's preference if any, and shall notify Tenant of the amount of the Initial
Bid and the TI Contractor selected by Landlord.

                (b)     Trade Bids. Upon approval of the Working Drawings by
Landlord, Tenant shall cause Tenant's Architect to deliver to Landlord the
number of copies of the Working Drawings which Landlord may reasonably request
for use in obtaining bids for the work and in the course of construction. Upon
receipt of such copies, Landlord shall obtain a bid for the Tenant Improvements
reflected in the Working Drawings from the TI Contractor (the "Trade Bid").
Landlord may, if it deems appropriate, solicit Trade Bids from additional
qualified general contractors selected by Landlord if Landlord believes that the
TI Contractor would not be the successful bidder in a competitive bidding
situation. The Trade Bids shall incorporate the terms agreed to during the
Initial Bid process and shall include competitive bidding from at least three
(3) qualified subcontractors in each trade (one of whom shall be the designated
subcontractor for the Base Building Improvements); provided, however, that
Landlord shall not be required to obtain bids from three (3) subcontractors for
any portion of the work for which three (3) qualified subcontractors are not
available. Upon receipt of the Trade Bid from the bidding contractors (including
any bids from subcontractors from whom bids were solicited but excluding any
subcontractor that does not submit a bid within the time period specified by
Landlord in its request for bids), Landlord shall select a contractor taking
into account, in Landlord's good faith judgment, all factors associated with the
Trade Bid, including without limitation, price, quality of materials to be used,
estimated completion time and Tenant's preference, if any, and shall notify
Tenant of the Trade Bid selected by Landlord and the subcontractors selected by
the successful bidder and Landlord. Tenant shall have the right, in accordance
with Paragraph 9(c) below, to review the Trade Bid selected by Landlord. During
the Trade Bid selection process, Tenant and its consultants, along with and at
the same time as Landlord, shall have the opportunity to interview the
prospective bidders and the members of their proposed project teams and to
review the qualifications and experience thereof. Landlord shall in good faith
take into account and consideration any concerns or objections raised by Tenant
in writing as to the qualifications and experience of the prospective trade
bidder and its project team. All other matters being equal (including, but not
limited to, experience, scheduling, staffing and contracting terms) Landlord
shall select the lowest priced Trade Bid from a qualified and acceptable bidder.
If the lowest bidding subcontractor for a Trade Bid under this Section 9(b)
below is a person or entity that Landlord believes must be bonded, then Landlord
may require an appropriate bond and the cost thereof shall be deducted from the
Cash Allowance or, if Tenant objects, Landlord shall select the next acceptable
subcontractor bid that does not require a bond.

                (c)     Tenant Approval Rights. Tenant shall have three (3)
Business Days after receipt of notice from Landlord regarding the selection of
the Trade Bid in which to give written notice to Landlord of Tenant's objection
to the Trade Bid, provided that Tenant must provide specific reasons for any
objections and shall identify precisely the portion or portions of the Trade Bid
to which it objects. If Tenant accepts or fails to object in the manner or
within the time set forth above, the Trade Bid shall be deemed approved and
Landlord shall enter into a guaranteed maximum price contract (the "Construction
Contract") with the TI Contractor which shall incorporate the terms of the Trade
Bid. If Tenant timely objects to the Trade Bid, Tenant shall meet with Landlord,
the Tenant's Architect and the successful bidder within five (5) Business Days
to discuss mutually acceptable revisions to the Trade Bid or to Tenant's Working
Drawings. All costs of changes required by any such revisions and all delays
associated therewith shall be the sole responsibility of Tenant. Following such
revisions, Landlord shall submit to Tenant, as soon as reasonably practicable, a
revised bid from the successful bidder, and the same procedure shall be followed
as set forth above until Tenant has approved the bid and a Construction Contract
has been entered into with the TI Contractor; provided, however, that Tenant
shall not have the right to compel Landlord or the successful bidder to retain
any subcontractor that is not reasonably acceptable to Landlord and the
successful bidder. Tenant shall have the opportunity to review the Construction
Contract prior to execution by Landlord and Tenant shall notify Landlord within
five (5) Business Days after receipt thereof of any specific modifications
Tenant requests to the warranty,

                                       C-5

<PAGE>

insurance, bonding or cost savings provisions of the Construction Contract.
Provided Tenant's proposed modifications are timely delivered to Landlord
hereunder, Landlord shall use good faith efforts to incorporate such
modifications into the final Construction Contract. The Construction Contract
shall contain: (i) an audit provision, reasonably acceptable to Landlord and
Tenant, permitting Tenant to participate in an audit of all matters under the
Construction Contract following Completion, subject to the provisions of
Paragraph 17(b) below; and (ii) no provisions regarding contingencies or
allowances that have not been approved in writing by Tenant, such approval not
to be unreasonably withheld or delayed.

                (d)     Bids to Include Entire Initial Premises. The Initial Bid
and the Trade Bid shall cover the entire tenant improvements package for the
Initial Premises, including Tenant Improvements and Tenant Extra Improvements in
the Minimum Initial Premises, the Hold Space and the First, Second and Third
Expansion Spaces, notwithstanding Landlord's right to defer construction of a
portion of such improvements in the Hold Space and the First, Second and Third
Expansion Spaces. Notwithstanding the foregoing, Landlord may include, as bid
alternates, options to defer construction of all or certain elements of the
Tenant Improvements and Tenant Extra Improvements with respect to the Hold Space
or any Expansion Space, but Tenant shall nevertheless contribute the full
Construction Payment based on the required full build-out of such space, when
and as required pursuant to Paragraph 9(f) below.

                (e)     Administrative Fee. Landlord shall be entitled to
receive an administrative fee for the supervision of the TI Contractor and
administration of the contract for the Tenant Improvements and Tenant Extra
Improvements in an amount equal to three and 75/100 percent (3.75%) of the cost
of constructing the Tenant Improvements and Tenant Extra Improvements in the
Premises and the administrative fee shall be included in the cost of the Tenant
Improvements and Tenant Extra Improvements. The administrative fee shall be
calculated and fixed at the time the Construction Contract is fully executed,
subject to increases arising from (i) changes required to be made in the Base
Building Improvements, and (ii) change orders under the Construction Contract
that significantly expand the scope of Landlord's Work.

                (f)     Payment of Tenant's Share of Costs. Within ten (10) days
after execution of the Construction Contract Tenant shall elect in a written
notice to Landlord to either (i) deposit, for payment in accordance with
Paragraph 14 below, an amount (the "Construction Payment") equal to the
difference between the Cash Allowance and the guaranteed maximum price under the
Construction Contract plus Landlord's administrative fee; or (ii) amortize and
pay the Construction Payment in accordance with Paragraph 14(c) below. If Tenant
does not elect to amortize and pay the Construction Payment under Paragraph
14(c) below, then at Tenant's election, and at Tenant's sole cost and expense,
Tenant shall either deposit the Construction Payment with Landlord or into a
commercial escrow account with an escrow agent mutually acceptable to Landlord
and Tenant ("Escrow Agent"). If Tenant does not elect to amortize the
Construction Payment under Paragraph 14 below, then Landlord is not obligated to
authorize construction of the Tenant Improvements to commence until Landlord has
received the Construction Payment; or (A) the parties and Escrow Agent have
entered into an escrow agreement in form and substance satisfactory to Landlord
and Tenant, and (B) Escrow Agent has received the Construction Payment. Tenant
shall pay all costs of the escrow. All interest earned on the Construction
Payment shall be for the account of Tenant. The escrow agreement shall require
the Escrow Agent to provide monthly accountings (together with supporting
documentation) to Landlord and Tenant and to notify Tenant each time a
disbursement is made. The Construction Payment shall be increased by the total
cost of any change order approved or otherwise required under Paragraph 15 below
and such increased payment shall be deposited by Tenant with Landlord or Escrow
Agent, as applicable, within fifteen (15) days following approval of such change
order by the parties or the date of Landlord's delivery of change orders
otherwise required under Paragraph 15.

                                       C-6

<PAGE>

        10.     Administration of Work.

                (a)     After entering into the Construction Contract and
receipt of the Construction Payment, Landlord shall administer the construction
of Tenant Improvements in accordance with the final, approved and permitted
Working Drawings ("Landlord's Work"); provided, however, that Landlord shall not
be required to install any Tenant Improvements that do not conform to the
approved Working Drawings, or conflict with elements of the approved Working
Drawings, or do not comply with applicable regulations, laws, ordinances, codes
and rules; such conformity being the obligation of Tenant.

                (b)     All Tenant Improvements shall be constructed by the TI
Contractor selected pursuant to Paragraph 9 with the exception of work stations,
installation of office equipment, telecommunications equipment and wiring and
cabling and acquisition of floor covering materials ("Tenant's Work") which
shall be designed, constructed, installed or provided by Tenant in accordance
with the Working Drawings. Connection of installed work stations to the
Building's electrical system shall be a part of the Tenant Improvements and
shall not constitute Tenant Work, however completion of such connection work
shall not be required for Substantial Completion under Paragraph 17.

                (c)     All Tenant's Work shall be installed in a manner that
conforms with the contractor's and its subcontractors' schedules for completion
of the Tenant Improvements, and the work of installation shall be handled in
such a manner as to maintain harmonious labor relations and as not to interfere
with or delay the Landlord's Work. No portion of the Landlord's Work shall be
dependent upon completion of any Tenant's Work and the Landlord's Work shall
have priority over any Tenant's Work. The contractors, subcontractors and
materialmen performing Tenant's Work shall be subject to prior reasonable
approval by Landlord and shall be subject to the administrative supervision of
Landlord or the Building Contractor and rules of the site. Contractors,
subcontractors and materialmen performing Tenant's Work shall take all necessary
steps to insure, so far as may be possible, the progress of the work without
interruption on account of strikes, work stoppage or similar causes for delay.
In the event that Tenant's contractors or subcontractors do not promptly cause
any pickets to be withdrawn and all other disruptions to the operations of the
Building promptly to cease, or in the event that Landlord notifies Tenant that
Landlord has in good faith concluded that picketing or other disruptive
activities are an imminent threat, Tenant shall immediately cause the withdrawal
from the job of all Tenant's Work contractors, subcontractors or materialmen
involved in the dispute. Any delay caused to Building Contractor attributable to
Tenant's Work shall constitute Tenant's Delay, and in addition to the
obligations set forth elsewhere herein, Tenant shall be obligated to pay all
cost and expense incurred by Landlord in connection therewith. No portion of
Tenant's Work shall be taken into account in determining whether or not the
Premises are Substantially Complete.

                (d)     Tenant shall require that each of its contractors,
subcontractors and materialmen maintain commercial general liability insurance
in an amount of not less than Two Million Dollars ($2,000,000.00) on a combined
single limit basis and all worker's compensation insurance required by law;
provided, however, the minimum insurance required hereunder may be reduced to
One Million Dollars ($1,000,000) in coverage for any contractor, subcontractor
or materialman who has contracted to provide to Tenant One Hundred Thousand
Dollars ($100,000) or less of work in the aggregate.

                (e)     Landlord shall use good faith efforts to make the
Premises available to Tenant on floor by floor, nonexclusive basis for
completion of Tenant's Work as soon as practicable in Landlord's judgment and,
in any event, at least thirty (30) consecutive days prior to Substantial
Completion (with carpet installed at least fourteen (14) days prior to
Substantial Completion), subject to all the terms and conditions of the Lease
and this Exhibit C and in accordance with any reasonable site rules imposed by
the Building Contractor or the TI Contractor and all limitations and
restrictions imposed by the City of Seattle. In addition, Landlord's Work with
respect to the Computer Room and the Communications Rooms shall have been
substantially completed and Tenant shall have exclusive access to such spaces
atleast forty-five (45) days prior to Substantial Completion, subject to the
same terms and conditions set

                                       C-7

<PAGE>

forth in the preceding sentence. As used herein the term: (i) "Computer Room"
shall mean an area of approximately nine thousand (9,000) square feet of
Rentable Area to be located on Floor 6 or below in the Premises, for use by
Tenant for its specialized computer needs; and (ii) "Communications Rooms" shall
mean up to two (2) separate rooms in locations adjacent to the communications
closets on each floor of the Premises as reasonably designated by Landlord, each
approximately 10 feet by 12 feet in size, for use by Tenant for its
communications needs. As used herein, the term "substantially completed" shall
mean with respect to: (A) the Computer Room, the installation of the raised
floor, walls and ceiling therein, with operational electrical, mechanical and
fire-suppression systems therein (assuming Tenant is utilizing a stand-alone"
condenser water system) and installation of a water detection system under the
raised floor; and (B) the Communications Rooms, the installation of walls and
riser sleeves required hereunder, with operational electrical, mechanical and
fire-suppression systems therein. Upon and following any entry into he Premises
by Tenant prior to the commencement of the Term, Tenant shall perform all of the
obligations Tenant applicable under the Lease during the Term (except the
obligation to pay Base Rent and Tenant's proportionate Share of Operating
Costs), including, without limitation, obligations pertaining to insurance,
indemnity, compliance with laws and Hazardous Materials. In addition to the
indemnity obligations of Tenant under the Lease, Tenant shall indemnify, defend
and protect Landlord and hold Landlord harmless from and against any and all
claims, proceedings, losses, costs, damages, causes of action, liabilities,
injuries or expenses arising out of or related to claims of injury to or death
of persons or damage to property occurring or resulting directly or indirectly
from the presence in the Premises or the Building of Tenant's contractors or
representatives or the activities of Tenant or its contractors or
representatives in or about the Premises or Building during the construction
period, such indemnity to include, without limitation, the obligation to provide
all costs of defense against any such claims. This indemnity shall survive the
expiration or sooner termination of the Lease.

                (f)     Tenant shall be entitled to be reimbursed (from the Cash
Allowance to the extent any amounts remain following payment in full of all
other amounts owed for Tenant Improvements) for reasonable costs incurred by it
in completing Tenant's Work, which reimbursement shall be made by Landlord
following its receipt of invoices and appropriate back-up material confirming
such expenditures.

        11.     Obligation of Tenant To Provide As Built Plans; Assignment of
Warranties. Within thirty (30) days of Substantial Completion, Tenant shall
cause its Architects to provide Landlord with a complete set of plans on mylar
and specifications reflecting the actual conditions of the Tenant Improvements
as constructed in the Premises, together with a copy of such plans on diskette
in the CAD format. Within thirty (30) days after Landlord's receipt of written
notification that Tenant has accepted the Premises, Landlord shall assign to
Tenant all warranties under the Construction Contract, along with the rights to
enforce same.

        12.     Reimbursement and Compensation. Tenant shall reimburse Landlord
for all actual costs incurred by Landlord in connection with the review of
Conceptual Plans and Working Drawings for the Tenant Improvements. Such review
fees shall be limited to the actual costs for Landlord's architect and
consultants to review such Conceptual Plans and Working Drawings and shall not
include a separate charge for Landlord or its employee or staff time. Landlord
may obtain any reimbursement required hereunder by deducting the amount of such
reimbursement from the Cash Allowance or the Construction Payment. Tenant shall
be responsible for delays and additional costs incurred by Landlord in
completing the Base Building Improvements due to inadequacies in the Working
Drawings or Tenant-requested changes to the Base Building Improvements.

        13.     Tenant Payments. Landlord shall make progress payments for
Landlord's Work first from the Cash Allowance and, at such time as the Cash
Allowance has been fully spent, then from the Construction Payment, from time to
time as the Tenant Improvements are constructed. If for any reason (such as
change orders to the Construction Contract arising from changes under Paragraph
15 below or the costs of Tenant's Work) the Cash Allowance and Construction
Payment are not adequate to make all required payments and Tenant has not
elected to amortize the Construction Payment in accordance with

                                       C-8

<PAGE>

Paragraph 14(c) below, Tenant shall pay to Landlord (or deposit with Escrow
Agent, as applicable) within fifteen (15) days after billing by Landlord such
additional required amount, as determined by Landlord. Statements or invoices
may be rendered by Landlord during the progress of the work so as to enable
Landlord to pay the TI Contractor, subcontractors, architect or engineers
without advancing Landlord's funds to pay the cost of Tenant Improvements. If
for any reason the Construction Payment is not fully utilized to make all
required payments, Landlord shall, upon completion of the Tenant Improvements,
refund to Tenant or direct Escrow Agent to refund to Tenant (as applicable) any
unused portion of the Construction Payment. Landlord shall be entitled to
suspend or terminate construction of the Tenant Improvements and to declare
Tenant in default in accordance with the terms of the Lease if payment by Tenant
of any amounts required to be paid by Tenant under this Exhibit C are not
received when due and such failure continues for a period of five (5) days
following written notice to Tenant of such failure. Landlord shall maintain such
separate accountings as may be necessary in connection with the Tax Credit.
Landlord shall provide to Tenant copies of each draw request submitted by the TI
Contractor, together with any back-up information provided therewith. Landlord
shall also provide to Tenant on a continuous basis copies of any progress
reports submitted by the TI Contractor, showing costs incurred to date,
percentage completion, retainage amounts and similar matters. Landlord in good
faith shall take into account and consideration any concerns and objections to
status, quality, percentage completion and similar matters raised by Tenant and
communicated to Landlord in writing. Notwithstanding the foregoing, in no
circumstances shall Tenant or its consultants communicate directly with the TI
Contractor regarding any such matters without the prior written approval of
Landlord. Tenant's Architect shall be responsible for timely completing and
delivering to Landlord all completion certificates required for payments under
the Construction Contract and Tenant's contract with Tenant's Architect shall so
provide; provided, however, that Landlord reserves the right and authority to
authorize payments to the TI Contractor whether or not a completion certificate
has been obtained from Tenant's Architect.

        14.     Cash Allowance.

                (a)     Landlord shall provide a total of up to Thirty-two and
00/100 Dollars ($32.00) per square foot of Useable Area in the Initial Premises
(the "Cash Allowance") toward the payment for the design and construction of the
Tenant Improvements and Tenant Work (assuming standard cabling) in the Premises
and Tenant's reasonable move-in costs and expenses. The Cash Allowance shall be
used solely for the construction of Tenant Improvements above the Base Building
Improvements and other purposes expressly permitted herein. Landlord shall, in
accordance with this Exhibit C. apply the Cash Allowance to the cost of
designing, permitting and constructing the Tenant Improvements (excepting Tenant
Extra Improvements) and for the other purposes specifically provided in this
Exhibit C, Except as provided herein, the Cash Allowance must be spent on items
that, at Landlord's option, shall remain in the Premises on Lease termination
and may not be applied to the cost of removable trade fixtures, equipment or
furniture. The Cash Allowance shall not be used to pay for: (i) Tenant Extra
Improvements; (ii) Tenant's move-in costs and expenses exceeding in the
aggregate the sum of Six Hundred Thousand Dollars ($600,000); or (iii) design
costs exceeding Three Dollars ($3.00) per square foot of Useable Area.

                (b)     If the entire Cash Allowance is not used for Tenant
Improvements and other expenses permitted under Paragraph 14(a) above, then
Landlord shall grant Tenant a credit against Rent in an amount equal to the
difference between (i) Thirty Dollars per square foot of Useable Area in the
Minimum Initial Premises, Hold Space and the Expansion Space, and (ii) the total
cost of the Tenant Improvements installed in the Premises as of the Term
Commencement Date (with respect to the Minimum Initial Premises) or otherwise
budgeted and included in the Construction Contract (with respect to the Hold
Space and the Expansion Space) (the "TI Credit"); provided, however, that the TI
Credit shall not exceed Five and no/100 Dollars ($5.00) per square foot of
Useable Area in the Minimum Initial Premises, Hold Space and the Expansion
Space. If the actual cost of the Tenant Improvements in the Minimum Initial
Premises and the budgeted cost of the Tenant Improvements in the Hold Space and
the

                                       C-9

<PAGE>
Expansion Space (as reflected in the Construction Contract) exceeds on average
Thirty Dollars ($30.00) per square foot of Useable Area, then Tenant shall not
be entitled to any TI Credit hereunder. For example, if the total cost of the
Tenant Improvements in the Minimum Initial Premises and the budgeted cost of the
Tenant Improvements in the Hold Space and the Expansion Space (as reflected in
the Construction Contract) is on average Twenty-seven and 00/100 Dollars
($27.00) per square foot of Useable Area, the TI Credit would be Three and
00/100 Dollars ($3.00) per square foot of Useable Area. If, on the other hand
the total cost of the Tenant Improvements in the Minimum Initial Premises and
the budgeted cost of the Tenant Improvements in the Hold Space and the Expansion
Space (as reflected in the Construction Contract) is Twenty-one and 00/100
Dollars ($21.00) per square foot of Useable Area, the TI Credit would be Five
and 00/100 Dollars ($5.00) per square foot of Useable Area. The TI Credit shall
be credited against Rent due in the first five (5) years of the Term in equal
monthly amounts. For example, if the total TI Credit equals One Hundred Ninety
Two Thousand Dollars ($192,000) then Tenant shall receive a monthly rent credit
equal to Three Thousand Two Hundred Dollars ($3,200).

                (c)     In the event that a Construction Payment is required
under Paragraph 9(f) above, then Tenant may elect to amortize and pay the
Construction Payment (the "Amortized Amount") over the Initial Term at an annual
interest rate of ten percent (10%); provided, however, that the Amortized Amount
may not exceed Ten and 00/100 Dollars ($10.00) per square foot of Useable Area
in the Initial Premises and the Hold and Expansion Space. If Tenant elects to
amortize the Construction Payment hereunder then Landlord and Tenant shall enter
into an amendment to the Lease setting forth the Amortized Amount and the
amortization schedule. The Amortized Amount together with interest thereon shall
be payable in equal monthly installments together with the monthly payment of
Base Rent and Operating Costs, commencing on the Term Commencement Date. If
Tenant defaults under the terms of the Lease (which shall mean an Event of
Default has occurred which has not been cured within the applicable cure period,
if any) then the entire unpaid principal balance of the Amortized Amount and all
accrued and unpaid interest thereon shall be immediately due and payable by
Tenant to Landlord. If the Lease terminates prior to the scheduled expiration
date thereof, including by reason of condemnation or damage, the unpaid
principal balance of the Amortized Amount and all accrued and unpaid interest
thereon shall be due and payable to Landlord within ten (10) days of the date of
termination. If Tenant fails to make any payment of the Amortized Amount when
due then Landlord shall be entitled to exercise any remedy available to Landlord
for a default in payment of Rent but the Amortized Amount shall not be prorated
or abated for any reason whatsoever, even if Base Rent is abated. The Amortized
Amount shall be disregarded for purposes of determining Base Rent for any Offer
Space or Base Rent during any Extension Term.

                (d)     The obligation of Landlord to make any one or more
payments pursuant to the provisions of this Paragraph 14 or to proceed with the
construction of the Tenant Improvements shall be suspended without further act
of the parties during any such time as there exists a material default by Tenant
under the Lease (which as used herein shall mean an Event of Default has
occurred which has not been cured after notice and the applicable cure period,
if any). Nothing in this Paragraph 14 shall affect the obligations of Tenant
under the Lease with respect to any alterations, additions and improvements
within the Premises, including, without limitation, any obligation to obtain the
prior written consent of Landlord thereto.

        15.     Modifications.

                (a)     Tenant Initiated Changes. If Tenant desires to change or
revise the Tenant Improvements specified by the Working Drawings, then Tenant
shall submit such change in writing for Landlord's approval, which shall not be
unreasonably withheld, and such request shall be accompanied by plans,
specifications and details as may be required to fully identify and quantify
such changes. Landlord shall not be required to approve any such modifications
if, in Landlord's reasonable judgment such modifications would delay completion
of the Base Building Improvements or have an adverse impact on the mechanical,
electrical, life safety or HVAC systems in the Building. If Landlord approves
such

                                      C-10

<PAGE>

changes, then Tenant shall provide Landlord with revised Working Drawings
incorporating the changes. Tenant shall be responsible for all costs of such
changes and any resulting delay in the completion of the Premises or the Base
Building Improvements due to modification of the Working Drawings, and Landlord
shall act in good faith to minimize the costs associated with any such
modifications. The actual cost of any approved changes (other than additional
design costs necessitated by reason of Landlord's modification of the Final
Building Plans pursuant to Paragraph 6 above) shall be added to the Construction
Payment and the Amortized Amount, as applicable, unless the Cash Allowance is
sufficient to pay the cost of such change.

                (b)     Contractor Required Changes. With respect to any change
orders required by the TI Contractor in order to proceed with construction of
the Tenant Improvements, within five (5) Business Days after delivery to Tenant
of such change order (which shall include the estimated additional costs, if
any), Tenant shall either approve or disapprove the change order by written
notice to Landlord. If Tenant approves the change order Tenant shall deposit any
additional sums required thereunder as provided under Paragraph 13. If Tenant
disapproves the change order, Tenant shall specifically identify in its notice
the nature and extent of Tenant's disapproval and shall, within fifteen (15)
days of receipt of such change order, deposit in a separate interest bearing
escrow with Escrow Agent (pursuant to instructions mutually acceptable to
Landlord and Tenant) any additional sums required thereunder, which shall be
released upon the earlier of: (i) Tenant's written consent thereto, or (ii)
completion of an audit and any arbitration under the Construction Contract as
permitted under Paragraph 17(b) below, it being the understanding of the parties
that any dispute as to the necessity for or amount of such change orders is to
be resolved with the TI Contractor by agreement or through such process.

                (c)     Other Required Changes. With respect to any change
orders required by reason of the errors or omissions of Tenant's Architect or
its consultants or otherwise required by the City of Seattle, Tenant shall
deposit any additional sums required thereunder as provided under Paragraph 13.

        16.     Designation of Construction Representatives. Tenant hereby
designates Michael Golden of Tenant Works as its initial representative in
connection with the design and construction of the Tenant Improvements and
Landlord shall be entitled to rely upon the decisions and agreements made by
such representative as binding upon Tenant. Tenant may change its designated
representative upon written notice to Landlord. Landlord hereby appoints Robert
C. Hollister and John Murphy McCullough to act on its behalf and represent its
interests with respect to all matters requiring Landlord action in this Exhibit
C. Tenant hereby expressly recognizes and agrees that no other person claiming
to act on behalf of Landlord is authorized to do so. No consent, authorization
or other action shall bind Landlord or Tenant unless in writing and signed by
the aforementioned person. If Landlord or Tenant complies with any request or
direction presented to it by anyone else claiming to act on behalf of the other
party, such compliance shall be at such party's sole risk and responsibility and
shall not in any way alter or diminish the obligations and requirements created
and imposed by this Exhibit. Landlord shall have the right to observe the
construction of the Tenant Improvements. Tenant shall notify Landlord of all
construction meetings and Landlord shall have the right to attend all meetings
of Tenant and its contractor and subcontractors, and the Tenant's construction
contract(s) shall so provide. Landlord shall notify Tenant of all construction
meetings relating to the Tenant Improvements. Tenant shall have the right to
attend all meetings of Landlord and the TI Contractor and its subcontractors,
coordination meetings between the Building Contractor and the TI Contractor
regarding the Tenant Improvements, and any meetings with the Building Contractor
regarding the Building Shell and Core involving items that directly impact the
Tenant Improvements or the schedule for construction thereof, and the
Construction Contract shall so provide. Tenant acknowledges that the Tenant
Improvements may be constructed at the same time as Landlord is constructing the
Building Shell and Core. Each party shall cause its architects, engineers and
contractors to cooperate fully and promptly with each other as and when deemed
necessary by such party in its good faith determination in the course of
construction of the Tenant Improvements. If Tenant's

                                      C-11

<PAGE>

work interferes with Landlord's work and Tenant fails to comply with Landlord's
requests for cooperation then Landlord may require Tenant to cease work in the
Premises.

        17.     Substantial Completion; Audit of Contractor.

                (a)     Substantial Completion. As used herein, "Substantial
Completion" shall mean (and the Minimum Initial Premises shall be deemed
"Substantially Complete") when (i) installation of the Tenant Improvements and
Tenant Extra Improvements in the Minimum Initial Premises has occurred, (ii)
Tenant has direct access to the elevator lobby on the floor (or floors) where
the Minimum Initial Premises are located, and direct access through the fourth
floor lobby to Tenant's main entrance to the Premises on the fourth floor, and
the fourth floor lobby shall be maintained in a clean and presentable manner
(although finish work therein may be ongoing); (iii) Basic Services are
available to the Minimum Initial Premises (including permanent power and
adequate elevator service to accommodate Tenant's normal operating needs, which
shall mean at a minimum four (4) elevators serving the Minimum Premises and one
(1) elevator serving the Garage), and (iv) appropriate governmental authorities
have issued a certificate of occupancy for the Minimum Initial Premises.
Notwithstanding the foregoing, Substantial Completion shall be deemed to have
occurred on the date on which Tenant takes occupancy of the Minimum Initial
Premises and commences to do business therein. Substantial Completion shall be
deemed to have occurred even if a "punch-list" or similar corrective work
remains to be completed. Within ten (10) days after Landlord delivers possession
of the Minimum Initial Premises to Tenant, Landlord, Tenant, and the Tenant's
Architect shall prepare a "punch-list" which shall consist of the items that
have not been, but should have been, finished or furnished by Landlord prior to
such date. Landlord shall proceed diligently to complete, or cause the TI
Contractor to complete, all punch-list items. If Substantial Completion occurs
before all finish work in the fourth (4th) floor lobby is complete, Landlord
shall continue with reasonable diligence to complete the lobby as soon as
practicable and, in any event, shall provide therein a suitable completed
appearance within six (6) months after Substantial Completion. Landlord shall
require reasonable retainage in the Construction Contract and shall not release
all of the retainage to the TI Contractor until such time as Landlord reasonably
believes all punch-list items have been completed. Release of any retainage
shall not release or relieve Landlord of the obligation to cause all punch-list
items to be completed and the Premises to be in the condition as required under
this Lease. The process for inspection of the Premises, the preparation of the
punch-list and the correction of all punch-list items by Landlord shall also
apply with respect to delivery of the Hold Space and all Expansion Space.

                (b)     Audit of Contractor. The Construction Contract shall
provide that Landlord and Tenant shall have a right, within a reasonable period
of time following Substantial Completion of the Minimum Initial Premises, to
conduct an audit of the books and records of the TI Contractor to confirm the
costs actually incurred with respect to the construction of the Tenant
Improvements, the allocation of costs between the Base Building Improvements and
the Tenant Improvements and similar matters under the Construction Contract. The
results of the audit shall be made available to both Landlord and Tenant. The
Construction Contract shall provide for binding arbitration of all disputes
arising over change orders or from the audit. Tenant shall be responsible for
the costs of such audit and any arbitration relating thereto, subject to
reimbursement from the TI Contractor as may be provided in the Construction
Contract. Tenant shall be responsible for and entitled to any adjustments to the
cost of the Tenant Improvements that may be made be reason of such audit.

        18.     Tenant's Delay. If Substantial Completion shall be delayed as a
result of any of the following causes, such delay shall be considered a "Tenant
Delay":

                (a)     Tenant's failure to obtain approval of the Working
Drawings by Landlord on or before Tenant's Plan Delivery Date;

                (b)     Tenant's failure to obtain any required permits to allow
construction of the Tenant Improvements by the date set forth in Paragraph 20
below;

                                      C-12

<PAGE>

                (c)     Changes in the Working Drawings requested by Tenant
after approval of the Working Drawings by Landlord, except to the extent such
changes are necessitated by Landlord's changes to the Final Building Plans under
Paragraph 6 above;

                (d)     Any delays in starting construction due to Tenant's
disapproval of the Trade Bid and/or the need to revise the Working Drawings to
obtain revised bids, to the extent such delays continue beyond thirty (30) days
after Landlord's delivery to Tenant of notice of a Trade Bid under Paragraph
9(c) above;

                (e)     Tenant's request for materials, finishes or
installations other than Building Standard Improvements which require a longer
time than Building Standard Improvements to obtain, install or complete;

                (f)     Tenant's failure to comply with the Building
Contractor's, the TI Contractor's or any subcontractor's schedule;

                (g)     Cessation of work for any periods under Paragraph 14(d)
above; or

                (h)     Delays caused by Tenant in construction.

        Landlord shall notify Tenant promptly after learning of any events or
circumstances which Landlord believes may constitute Tenant Delay hereunder,
however Landlord's failure to so notify shall not constitute a waiver by
Landlord of its right to claim a Tenant Delay has occurred. Landlord shall use
good faith efforts to minimize the impact of any Tenant Delay on the Substantial
Completion Date. In the event of any Tenant Delay, Tenant shall pay to Landlord,
as additional Rent, one day's Base Rent for each day of Tenant Delay to the
extent that Tenant Delay has actually delayed Substantial Completion. In
addition, and notwithstanding any provision to the contrary contained in the
Lease, if Substantial Completion is delayed due to Tenant Delay, the Term
Commencement Date shall be the date when Substantial Completion would have
occurred if there had been no Tenant Delay. Tenant acknowledges that the length
of any Tenant Delay is to be measured by the duration of the delay in
Substantial Completion caused by the event or conduct constituting Tenant Delay,
which may exceed the duration of such event or conduct due to the necessity of
rescheduling work or other causes. The parties acknowledge that the Target Dates
for delivery of Conceptual Plans and Working Drawings as set forth in Section 20
below are designed to seek to include the Tenant Improvements in the same bid
packages as the Base Building Improvements and that the failure of Tenant to
meet such Target Dates could increase the overall costs of the Tenant
Improvements. Landlord and Tenant will cooperate in good faith to seek to
include the Tenant Improvements as part of the bid package for the Base Building
Improvements. However, the failure of Tenant to complete the Conceptual Plans
and Working Drawings by the Target Dates set forth in Section 20 below shall not
in itself constitute a Tenant Delay.

        19.     Reliance on Plans. Landlord and Tenant shall each be entitled to
rely on the plans and specifications received from the other for work to be done
by Landlord or Tenant. If (a) Tenant notifies Landlord of any construction
discrepancies following its inspection pursuant to Paragraph 8 above, or (b)
Tenant is required to modify its Working Drawings due to changes in the Final
Building Plans initiated by Landlord pursuant to Paragraph 6 above after
Landlord's deliver of the Final Building Plans to Tenant, then Landlord shall
reimburse Tenant for the cost of revising the Working Drawings to accommodate
such construction discrepancies (other than those arising from customary
variations in the course of construction) or changes in the Final Building
Plans, and the deadlines set forth in Paragraph 20 may be extended as provided
in Paragraph 6 above. The reimbursement shall be limited to the actual costs
incurred in making such revisions.

                                      C-13

<PAGE>

        20.     Schedule of Milestone Dates.

<TABLE>
<CAPTION>
                     Event                                  Target Date            Deadline
---------------------------------------------------   -----------------------   ---------------
<S>                                                   <C>                       <C>
Landlord's Approval of Conceptual Plans:              July 3, 2000                July 1, 2001

Landlord's Delivery of Final Building Plans:          November 1, 2000            July 1, 2001

Tenant's Delivery of Working Drawings to Landlord:    Within 6 months of       January 2, 2002
                                                      Landlord's delivery of
                                                      Final Building Plans

Permits in Place/Construction Start Date:             January 2, 2002          January 2, 2002

Substantial Completion/Scheduled Commencement
 Date:                                                 April 1, 2003              April 1,2003
</TABLE>

                                      C-14

<PAGE>

                                  SCHEDULE C-l
                           BASE BUILDING IMPROVEMENTS

Landlord shall complete the Base Building Improvements including the Building
exterior enclosure, structural, mechanical, electrical, plumbing and
telecommunications systems as more fully described below. All references in this
Schedule C-l to "square feet," "square foot," "s.f." or "psf" are intended to
refer to square feet of Useable Area.

ELECTRICAL SYSTEM

The building electrical system provides for an approximate total of 9.0 watts
per square foot throughout the building exclusively for tenant use. The power
will be distributed as follows:

..   1.5 watts/s.f. for lighting, in panelboards on each floor;
..   3.0 watts/s.f. for receptacles, transformed to 120/208V in panelboards
    on each floor;
..   2.5 watts/s.f. spare capacity in the bus risers on each floor;
..   2.0 watts/s.f. spare capacity at the main switchboard in the garage.

The standard electrical allocation for Tenant convenience power (receptacles) is
2.5 watts/sf. All costs above the standard allocation shall be paid by Tenant.
All HVAC and building common area loads will be handled separately and are not
included in these totals.

MECHANICAL SYSTEM

The building mechanical system will be a floor-by-floor system providing 100%
fresh air to the tenant space. The Building is designed to incorporate a rooftop
cooling tower to provide condenser water for specific cooling needs. In
addition, Landlord will:

..   Install all vertical ductwork;
..   Install the main horizontal air distribution loop on each floor;
..   Provide VAV fan powered mixing boxes and slot diffusers at a standard
    density ready for installation, with a maximum unit size of 2200 cfm;
..   Provide after-hours HVAC service through an automated tenant interface
    (There will be an hourly charge for after-hours HVAC service).

The building mechanical system shall be built and designed in accordance with
the following design criteria:

1.      Outdoor Design Conditions

        Summer:           85 degree F dry bulb (ASHRAE 0.1%)
                          67 degree F wet bulb (ASHRAE 0.1%)

        Winter:           17 degree F dry bulb

2.      Indoor Design Conditions

        People:           140 rentable square feet per person

        Lights:           1.5 watts per usable square foot

                                      C-l-1

<PAGE>

        Equipment:        2 watts per usable square foot

        Temperature:      Summer 74 degree F (+/- 2 degrees F)

                          Winter 72 degree F (+/- 2 degrees F)

        Humidity:         Variable. No direct control of humidity required.

        Outside Air:      20 cfm/person minimum (7 people/1000 rentable square
                          feet). Can be increased to 100% outside air with
                          air economizer operation.

        Extended Hours:   Air system can operate with tenant request.

        24-Hour Cooling:  Condenser water provided for supplemental 24 hour
                          cooling (approximately 10 tons per floor)

        Acoustical:       NC - 40 (+/ -2) within 15 feet of core

STRUCTURAL SYSTEM

The building will feature the following standard loading capacities:

..   Core areas:      80 psf live load, 20 psf dead load
..   Perimeter areas: 50 psf live load, 20 psf dead load

LIFE SAFETY SYSTEMS

The Building will use state of the art life safety systems. As part of the base
building, Landlord will provide at no cost to tenant:

..   Completed life safety buildout in all common areas;
..   Quick response sprinkler heads, smoke detectors, and emergency exit
    lights in the tenant space as required by code for core and shell;
..   Fire control panels in the ground floor lobby of each building, sized to
    accommodate the horns and strobes to be installed as part of the Tenant
    Improvements in Tenant's space;
..   Year 2000 compliant software and hardware.

SECURITY SYSTEMS

The Building will function 24 hours per day, 7 days per week with a security
system that includes:
..   Card controlled access to the Building and the garage;
..   Card readers in each elevator cab;
..   Closed circuit security camera system;
..   24 hour manned security office on-site.

                                      C-l-2

<PAGE>

TELECOMMUNICATIONS

Landlord will provide a telephone closet and board on each multi-tenant floor.
The Building will have vertical chase space for multiple telecommunications
providers. In addition, the Building will include:

..   Conduit from the project to telecommunications providers in the street;
..   Vertical conduit to accommodate tenant service providers;

GROUND FLOOR LOBBY AND TYPICAL RESTROOM FINISHES

The ground floor lobby and restrooms will be finished in a manner consistent
with the first class quality of the overall project. Such finishes will include:

..   Floorcoverings composed of granite, marble, or other suitable stone,
    ceramic tile and carpet;

..   Wallcoverings that are a combination of granite, marble, or other
    suitable stone, wood, fabric, and gypsum board;

..   Security desk and tenant directory near the Fourth Avenue entrance;

..   Stainless steel or other upgraded metal elevator doors.

Office floor restroom finishes shall include:

..   Ceramic tile on the floor;

..   Ceramic tile on all wetwalls;

..   Stone vanities;

..   Vitreous china fixtures;

..   Painted metal, ceiling hung toilet partitions;

..   Acoustical tile or gypsum board ceilings.

OTHER BUILDING FINISHES

In addition to the aforementioned lobby and restroom finishes, Landlord will:

..   Complete Building exterior enclosure;
..   Install high speed traction elevators with 3500 pound capacity designed
    to minimize tenant waiting time; upgrade elevator doors, cab finishes,
    frames and buttons;
..   Install drywall ready for paint on all core walls, perimeter walls,
    columns, shafts, bathrooms, and stairwells;
..   Install mini-blinds on all exterior windows;
..   Install one standard drinking fountain per floor at or near the elevator
    lobby;
..   Finish Building Entrance Lobby and multi-tenant lobbies
..   Finish all multi-tenant corridors;
..   Finish Men's & Women's restrooms and associated vestibules;
..   Provide acoustical ceiling grid and tiles ready for installation in
    accordance with the standard Building layout plan;

                                      C-l-3

<PAGE>

..   Provide building standard light fixtures ready for installation, at a
    standard density of 1 per 80 square feet; Tenant shall have the right to
    upgrade the building standard light fixtures to a different fixture
    acceptable to Landlord in Landlord's discretion. Tenant shall receive
    any savings actually realized by Landlord through such upgrade as an
    addition to the Cash Allowance.

                                      C-l-4

<PAGE>

                                  SCHEDULE C-2

                  DEFINITION OF BUILDING STANDARD IMPROVEMENTS

For the purposes of this Lease, Building Standard Improvements shall consist of:

1.      PARTITIONS.

        One (1) linear foot of ceiling height partition per twelve (12) square
        feet of Net Rentable Area less Common Areas. All required partitions
        shall be 5/8" gypsum board, painted with two coats of latex on 2-1/2"
        metal studs at 24" on center, with 2-1/2" base.

2.      DOORS AND HARDWARE.

        One (1) full height, solid core, hardwood veneer door with a aluminum
        frame and lever handle latch set hardware per three hundred (300) square
        feet of Net Rentable Area less Common Areas.

3.      CEILING.

        Installation of the suspended metal grid system, complete with Class A
        acoustical mineral and/or ceramic fiber 24"x 48" lay in ceiling panels
        for typical floor lease space throughout the Premises as selected or
        provided by Landlord.

4.      LIGHTING.

        Installation of two (2) lamp, 18 cell parabolic light fixtures ready for
        installation per Tenant's plans of a quantity not to exceed one (1)
        2'x4' recessed fluorescent lighting fixture per 80 square feet of usable
        area of a fixture selected or provided by Landlord.

5.      ELECTRICAL OUTLETS.

        One (1) duplex wall-mounted convenience outlet mounted at standard
        locations with white plastic cover plate for each one hundred twenty
        (120) square feet of Net Rentable Area less Common Areas.

6.      TELEPHONE OUTLETS.

        One (1) telephone wall outlet mounted at standard locations for each two
        hundred ten (210) square feet of Net Rentable Area less Common Areas
        with pull wire through the partition.

7.      FLOOR COVERING.

        Building Standard carpet or a credit of $15.00 per square yard of
        carpeted area.

8.      SWITCH.

        One (1) dual light switch, rocker type, mounted at standard locations
        with white plastic cover plate for each three hundred (300) square feet
        of Net Rentable Area less Common Areas.

9.      LIFE SAFETY SYSTEMS.

        Rapid Response fire sprinkler heads to conform with typical Tenant
        partition layout, utilizing the Building Standard partition and
        lighting, for light hazard occupancy design criteria. Manual fire alarm
        pull stations, exit lights, and audible fire alarm speakers shall be
        provided at the Building stair doors and elevator lobbies.

10.     HVAC.

        Installation of the variable air volume series Fan Powered Terminal
        Units (FPTUs) provided by Landlord and installed in accordance with
        building standard mechanical layouts to suit normal general office
        space.

                                      C-2-1

<PAGE>

                                    EXHIBIT D

                              RULES AND REGULATIONS

        1.      Sidewalks, doorways, halls, stairways, vestibules and other
similar areas shall not be obstructed by any Tenant or used by them for purpose
other than ingress to and egress from their respective Premises, and for going
from one part of the Building to another part.

        2.      Plumbing fixtures shall be used only for their designated
purpose, and no foreign substances of any kind shall be deposited therein.
Damage to any such fixture resulting from misuse by Tenant or any employee or
invitee of Tenant shall be repaired at the expense of Tenant.

        3.      Nails, screws and other attachments to the Building require
prior written consent from Landlord.

        4.      All contractors and technicians rendering any installation
service to Tenant shall be subject to Landlord's approval and supervision prior
to performing services. This applies to all work performed in the Building,
including, but not limited to, installation of telecommunications equipment, and
electrical devices, as well as all installation affecting floors, walls,
woodwork, windows, ceilings, and any other physical portion of the Building.

        5.      Movement in or out of the Building of furniture, office
equipment, or other bulky material which requires the use of elevators,
stairways, or Building entrance and lobby shall be restricted to hours
established by Landlord. All such movement shall be under Landlord's
supervision, and the use of an elevator for such movements shall be made
restricted to the Building's freight elevators, or an elevator for such
movements shall be made restricted to the Building's freight elevators.
Prearrangements with Landlord shall be made regarding the time, method, and
routing of such movement, and Tenant shall assume all risks of damage and pay
the cost of repairing or providing compensation for damage to the Building, to
articles moved and injury to persons or public resulting from such moves.
Landlord shall not be liable for any acts or damages resulting from any such
activity.

        6.      Corridor doors, when not is use, shall be kept closed.

        7.      Tenant shall cooperate with Landlord in maintaining the
Premises. Tenant shall not employ any person for the purpose of cleaning the
Premises other than the Building's cleaning and maintenance personnel.

        8.      Deliveries of water, soft drinks, newspapers, or other such
items to any Premises shall be restricted to hours established by Landlord and
made by use of the freight elevators if Landlord so directs.

        9.      Nothing shall be swept or thrown into the corridors, halls,
elevator shafts, or stairways. No birds, fish, or animals of any kind shall be
brought into or kept in, on or about the Premises.

        10.     No cooking shall be done in the Premises except in connection
with a cafeteria, convenience lunch room or beverage service for employees and
guests (on a noncommercial basis) in a manner which complies with all of the
provisions of the Lease (including Landlord's right to review and approve all
plans relating thereto) and which does not produce fumes or odors.

        11.     Food, soft drink or other vending machines shall not be placed
within the Premises without Landlord's prior written consent, except vending
machines used by employees of Tenant (and not for use by the general public).

        12.     Tenant shall not use or keep on its Premises any kerosene,
gasoline, or inflammable or combustible fluid or material other than limited
quantities reasonably necessary for the operation and maintenance of office
equipment.

                                       D-1

<PAGE>

        13.     Tenant shall not tamper with or attempt to adjust temperature
control thermostats in the Premises. Landlord shall make adjustments in
thermostats on call from Tenant.

        14.     Tenant shall comply with all requirements necessary for the
security of the Premises, including the use of service passes issued by Landlord
for after hours movement of office equipment/packages, and signing security
register in Building lobby after hours.

        15.     Landlord shall furnish Tenant with a reasonable number of
initial access cards for entrance doors into the Premises in accordance with the
terms of the Lease, and may charge Tenant for additional or replacement access
cards, thereafter. All such access cards shall remain the property of Landlord.
No additional locks are allowed on any door of the Premises without Landlord's
prior written consent and Tenant shall not make any duplicate keys, except those
provided by Landlord. Upon termination of this Lease, Tenant shall surrender to
Landlord all keys and access cards to the Premises, and give to Landlord the
combination of all locks for safes and vault doors, if any, in the Premises.

        16.     Landlord retains the right, without notice or liability to any
tenant, to change the street address of the Building.

        17.     Canvassing, peddling, soliciting, and distribution of handbills
in the Building are prohibited and each tenant shall cooperate to prevent these
activities.

        18.     The Building hours of operation shall be as set forth in Section
5.2 of the Lease.

        19.     Tenant shall take reasonable steps to prevent the unnecessary
generation of refuse (e.g., choosing and using products, packaging, or other
materials in business that minimize solid waste or that are durable, reusable,
or recyclable). Tenant shall provide or obtain recycling containers in its
business for use by employees and customers, shall recycle acceptable materials
in the recycling containers provided by Landlord, and shall otherwise
participate in the recycling program established by Landlord for the Building.
Acceptable recyclable materials may include, but are not limited to, the
following: newspaper, cardboard, paperboard, office paper and other mixed paper,
aluminum, tin and other metal, glass, and #1 (PETE) and #2 (HDPE) plastics.

        20.     Tenant shall not and shall cause its employees, agents,
contractors, invitees, customers and visitors, not to smoke in the Premises or
in any portion of the Building or the Common Areas, except those areas expressly
designated as smoking areas by Landlord. Persons may smoke cigarettes in
designated areas only if the smoker uses designated receptacles for ashes and
cigarette butts and does not annoy any nonsmoking persons using the area or
interfere with access to the Building.

        21.     Landlord reserves the right to rescind or modify any of these
rules and regulations and to make future rules and regulations required for the
safety, protection, and maintenance of the Building, the operation and
preservation of good order thereof, and the protection and comfort of the
tenants and their employees and visitors. Such rules and regulations, when made
and written notice given the Tenant, shall be binding as if originally included
herein.

                                       D-2

<PAGE>

                                    EXHIBIT E

                                 SAMPLE FORM OF
                         LEASE COMMENCEMENT CERTIFICATE

Re:     [Tenant]
        [Suite No.]
        Madison Financial Center

        ------------------------
        Seattle, Washington

        This is to certify that pursuant to the terms of that certain Office
Lease Agreement dated as of ___________, between [Tenant's Name] ("Tenant") and
National Office Partners Limited Partnership, Tenant has taken possession of
Premises described above. Tenant hereby certifies and agrees that the following
information is true and correct:

        1.      Term Commencement Date: _____________________________

        2.      Lease Expiration Date: ________________________________

        3.      Net Rentable Area of Premises: ______________________

        4.      Total Construction Payment (Exhibit C to Lease) Due From Tenant
                to Landlord: _______________

        5.      Security Deposit Paid: _______________________

        6.      Total Prepaid Rent: ___________________________________

        7.      Months to Which Prepaid Rent Applies: ________________________

        8.      Attached hereto is the Insurance Certificate required by Article
                11 of the Lease

[Name of Tenant]

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

                                       E-1

<PAGE>

                                   EXHIBIT F-l

                             CONCEPTUAL SIGNAGE PLAN

                                      F-l-1

<PAGE>

                                   EXHIBIT F-1

[GRAPHIC APPEARS HERE]

<PAGE>

                                   EXHIBIT F-2

                                MAJOR TENANT SIGN

                                      F-2-1

<PAGE>

                                   EXHIBIT F-2

[GRAPHIC APPEARS HERE]

<PAGE>

                                    EXHIBIT G

                       SAMPLE FORM OF ESTOPPEL CERTIFICATE

TENANT: ________________________________[insert full legal name]
DATE OF LEASE: _________________________
AMENDMENTS: ____________________________
PREMISES: Suite No.______ / Floors:___________________

                              ESTOPPEL CERTIFICATE

 To: ________________________________________________

            The undersigned hereby certifies as follows:

                1.      The undersigned is the "Tenant" under the above
        referenced lease ("Lease") with National Office Partners Limited
        Partnership ("Landlord") covering the above referenced Premises
        ("Premises"). A true, correct and complete copy of the Lease (including
        all addenda, riders, amendments, modifications and supplements thereto)
        is attached hereto as Exhibit A.

                2.      The Lease constitutes the entire agreement between
        landlord under the Lease and Tenant with respect to the Premises and the
        Lease has not been modified, changed, altered or amended in any respect
        except as set forth in Exhibit "A" and the Lease is valid and in full
        force and effect as of the date hereof.

                3.      The term of the Lease commenced on ________, 20
        ________, and, including any presently exercised option or renewal term,
        will expire on _____, 20 ________, unless sooner terminated or extended
        in accordance with the terms of the Lease. Tenant has accepted
        possession of the Premises and is the actual occupant in possession and
        has not sublet, assigned or hypothecated Tenant's leasehold interest,
        except as follows: _____________________________________________________
        ________________________________________________________________________
        _______________________________________________________________________.

                4.      As of the date of this Estoppel Certificate, there
        exists no breach or default on the part of either Tenant or Landlord
        and, to the best of Tenant's knowledge, no event has occurred and no
        condition exists which, with the giving of notice or the lapse of time,
        or both, will constitute a default under the Lease. To the best of
        Tenant's knowledge, no claim, controversy, dispute, quarrel or
        disagreement exists between Tenant and Landlord.

                5.      There are no remaining unsatisfied obligations under the
        Lease on the part of Landlord with respect to tenant improvements, free
        rent, partial rent, rebate of rent, credits, offsets or deduction in
        rent or any other type of rental concessions, except:___________________
        ________________________________________________________________________
        ________________________________________________________________________
        _______________________________________________________________________.

                6.      Tenant is currently obligated to pay base rental in
        monthly installments of $ _________ per month and monthly installments
        of base rental and estimated operating expenses have been paid through
        _______, 20 ______. No other rent has been paid in advance (other than
        estimates of operating expenses) and Tenant has no claim or defense
        against Landlord under the Lease and is asserting no offsets or credits
        against either the rent or Landlord. Tenant has no claim against
        Landlord for any security or other deposits except $_______ which was
        paid pursuant to the Lease. The current proportionate share from which
        Tenant's operating expenses are calculated is ________.

                                       G-1

<PAGE>

                7.      Tenant has no option or preferential right to purchase
        all or any part of the Premises (or the real property of which the
        Premises are a part). Tenant has no right to renew or extend the term of
        the Lease or expand the Premises except:_______________________________.

                8.      There has not been filed by or against Tenant a petition
        in bankruptcy, voluntary or otherwise, any assignment for the benefit of
        creditors, any petition seeking reorganization or arrangement under the
        bankruptcy laws of the United States, or any state thereof, or any other
        action brought under said bankruptcy laws with respect to Tenant.

                9.      Tenant's address for notice purposes is: _______________
                        _______________________________________________________.

            This Estoppel Certificate is made to______________________("Buyer")
        [or, ("Lender")] and National Office Partners Limited Partnership,
        L.L.C. ("Owner") in connection with the prospective purchase by Buyer,
        or Buyer's assignee, of the building containing the Premises [or,
        Lender's prospective loan to Owner which will be secured by Owner's
        interest in the Lease and the building containing the Premises]. This
        Certificate may be relied on by Buyer [Lender] and Owner and their
        successors and assigns and any other party who acquires an interest in
        the Premises in connection with such purchase [or loan] and any person
        or entity which may finance Buyer's purchase.

            Dated this _____ day of ______________, 20__.
                                             TENANT

                                             -----------------------------------
                                             [insert full legal name]

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

                                       G-2

<PAGE>

                                    EXHIBIT H

                            JANITORIAL SPECIFICATIONS

               BUILDING STANDARD JANITORIAL AND CLEANING SERVICES

        The following building standard janitorial and cleaning services shall
be done by Landlord between 5:30 p.m. and 11:30 p.m. on Monday through Friday, 5
days a week, and at such other times as may be mutually agreed upon.

A.      Tenant Office Areas, Conference Rooms, Common Areas, and Kitchenettes

        1.      Empty, clean and damp dust all waste receptacles and remove
                waste paper and rubbish from the Premises nightly, wash
                receptacles as necessary. Recycled materials including paper,
                aluminum and glass will be picked up nightly.

        2.      Empty and clean all ash trays, screen all sand urns nightly and
                supply and replace sand as necessary.

        3.      Vacuum nightly all rugs and carpeted areas in the Premises,
                lobbies and corridors.

        4.      Nightly hand dust and wipe clean with damp or treated cloth all
                office furniture, files, fixtures, window sills and all other
                horizontal surfaces; once every three weeks for vertical paneled
                surfaces; wash window sills when necessary.

        5.      Nightly damp wipe all glass furniture tops.

        6.      Nightly spot clean, including remove finger marks, dirt, stains,
                graffiti and smudges from vertical surfaces, including doors,
                door frames, glass, around light switches, private entrance
                glass, painted walls, elevator doors, and partitions.

        7.      Wash clean all water fountains nightly.

        8.      Refill all paper towel dispensers in Common Areas.

        9.      Sweep all private stairways nightly, vacuum nightly if carpeted.

        10.     Police all stairwells throughout the project daily and keep in
                clean condition.

        11.     Nightly damp mop spillage in noncarpeted office and public
                areas.

        12.     Nightly damp dust all telephones, desks and other furniture
                tops.

B.      Washrooms (Including Private Washrooms)

        1.      Wet mop, sanitize, rinse and dry floors nightly.

        2.      Scrub floors as necessary.

        3.      Clean all mirrors, bright work and enameled surfaces nightly.

        4.      Wash and disinfect all basins, urinals and bowls nightly using
                nonabrasive cleaners to remove stains and nightly clean
                undersides of rim of urinals and bowls.

        5.      Wash both sides of all toilet seats with soap, water and
                disinfectant nightly.

        6.      Nightly damp wipe and wash with disinfectant when necessary,
                partitions, tile walls and outside surface of dispensers and
                receptacles.

        7.      Empty and sanitize receptacles and sanitary disposals nightly;
                thoroughly clean and wash at least once per week.

        8.      Fill toilet tissue, facial tissue, soap, paper towel dispensers,
                and sanitary napkin dispensers nightly.

                                       H-1

<PAGE>

        9.      Clean flushometer, piping, toilet set hinges and other metal
                work nightly.

        10.     Wash and polish walls, partitions, tile walls and enamel
                surfaces from trim to floor monthly.

        11.     Vacuum all louvers, ventilating grilles and dust light fixtures
                weekly.

        NOTE:   It is the intention to keep washrooms thoroughly cleaned and not
                to use a disinfectant to kill odor. If a disinfectant is
                necessary, an odorless product will be used.

C.      Floors

        1.      All ceramic tile, marble and terrazzo floors to be swept nightly
                and washed, scrubbed and buffed as needed.

        2.      Vinyl asbestos, asphalt, vinyl, rubber or other composition
                floors and bases to be swept nightly using dust down
                preparation; such floors in public areas on multitenancy floors
                to be waxed and buffed monthly.

        3.      Tile floors in all areas will be waxed and buffed monthly.

        4.      Floors re-waxed and old wax removed as necessary.

        5.      Carpeted areas and rugs to be vacuumed cleaned nightly. Return
                chairs and waste containers to proper positions.

        6.      Carpet shampooing will be performed at Lessee's request and
                billed to Tenant. Tenant has the right to put this service out
                to bid with other carpet cleaning companies with final selection
                subject to Lessor's approval.

        7.      All floor areas to be spot cleaned nightly.

        8.      Clean chair mats weekly.

D.      Glass

        1.      Clean all perimeter glass every six (6) months outside and every
                six (6) months inside. Any additional cleaning to be at Tenant's
                expense.

        2.      Clean glass entrance doors and adjacent glass panels nightly.

        3.      Clean partition glass, office relights, and interior glass doors
                quarterly.

        4.      Clean exterior of ground floor glass as needed.

E.      High Dusting (Quarterly)

        1.      Dust and wipe clean closet shelving when empty and carpet sweep
                and dry mop floors in closets if such are empty.

        2.      Dust clean all vertical surfaces such as walls, partitions,
                doors, door bucks and other surfaces above shoulder height.

        3.      Damp dust ceiling air-conditioning diffusers, wall grilles,
                registers and other ventilating louvers.

        4.      Dust the exterior (i.e., below ceiling) surfaces of all lighting
                fixtures, including glass and plastic enclosures, pendant
                lighting, and aluminum louvers.

F.      Day Service

        1.      At least once, but not more than twice during the day, check
                men's washrooms for toilet tissue replacement.

                                       H-2

<PAGE>

        2.      At least once, but not more than twice during the day, check
                women's washrooms for toilet tissue and sanitary napkin
                replacement.

        3.      Supply toilet tissue, facial tissue, soap, paper towels in men's
                and women's washrooms and sanitary napkins in women's washroom.

        4.      As needed, vacuuming of elevator cabs will be performed.

        5.      There will be a constant surveillance of public areas to insure
                cleanliness.

G.      General

        1.      Wipe all interior metal window frames, mullions, and other
                unpainted interior metal surfaces of the perimeter walls of the
                building each time the interior of the windows is washed.

        2.      Keep slop sink rooms in a clean, neat and orderly condition at
                all times.

        3.      Wipe clean all metal hardware fixtures nightly and polish bright
                work as necessary.

        4.      Dust and/or wash all directory boards as required and remove
                fingerprints and smudges nightly.

        5.      Maintain building lobby, corridors and other public areas in a
                clean condition.

        6.      Janitorial services must respond to emergencies within a timely
                manner to prevent further damage from flooding.

H.      Special

        It is understood that no services of the character provided for in this
        Exhibit shall be provided on Saturdays, Sundays or days recognized as
        Holidays pursuant to this Lease, unless specifically stated above.

This cleaning specification may be changed or altered by Landlord from time to
time to facilitate conformity with the latest methods of maintenance and
cleaning technology generally recognized as acceptable for first-class office
buildings in Seattle, Washington, and Landlord reserves the right to alter the
level of such services from time to time as determined by Landlord to be
appropriate for a first-class office building. In the event Tenant requires a
higher level of services to suit its particular needs, the cost of such
additional service shall be borne by Tenant. However, in no event will the level
or quality of services be diminished by such changes.

                                       H-3

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