Document:

Unassociated Document

    [TRANSLATION]

    Equity
      Transfer Agreement

    [PARTIES]
      

    Vendors:

     

    Nationality:
      People’s
      Republic of China (“China” or “PRC”)

    
      	
               

            	 	
               

            	 	
               

            	 	
               

            	 	
            	 
	
              Vendor/Shareholder

            	 	 	
              Capital
                

              (ten
                thousand RMB)

            	 	 	
              Payment

            	 	 	
              Share
                Percentage (%)

            	 	 	
              Share
                Price

              (ten
                thousands RMB)

            	 
	
              JiangPeiHeng

            	 	 	
              15

            	 	 	
              currency

            	 	 	
              25.86

            	 	 	
              77.58

            	 
	
              GaoHongWu

            	 	 	
              16

            	 	 	
              currency

            	 	 	
              27.59

            	 	 	
              82.77

            	 
	
              GuoSen

            	 	 	
              27

            	 	 	
              currency

            	 	 	
              46.55

            	 	 	
              139.65

            	 

    

     

    

      
        	
                Transferee:

              	
                Harbin
                  Tian Di Ren Medical Science and Technology Company

              
	 	
                (The
                  “Transferee”)

              	 	 
	
                Place
                  of registration:

              	
                China

              	
                Authorized
                  Officer:

              	
                Yan
                  Qing Liu 

              
	
                Nationality:
                  

              	China	 	 

      

    

    

    Heilongjiang
      Haina Pharmaceutical, Inc., is a company registered in PRC, business
      license: 230199100062946, with a registered capital of 580,000 RMB. All
      Shareholders (“Shareholders” or “Vendors”) agree to transfer 100% stock equity
      to the Transferee, and the Transferee agrees to buy all such stock equity.
      This
      agreement is made by the parties pursuant to the regulation of PRC and
      principles of equality and mutual benefit. 

    Article
      1. Name and share of the transferred stock equity. 

    All
      shareholders are agree to transfer 100% stock equity and related rights of
      registered capital of Heilongjiang Haina Pharmaceutical, Inc. (“Haina”) to
      Transferee in exchange for value of 3,000,000 RMB. The Vendors agree to transfer
      the stock equity. After the acquisition, Transferee will be vested with 100%
      of
      the stock equity of Haina and, Vendor will not own the stock equity of
      Heilongjiang Haina Pharmaceutical, Inc. (“Haina”) and the Transferee will own
      all the stock equity of Haina. 

    Article
      2. Transfer value. 

    Through
      the negotiation, the parties agree that the fair market value and purchase
      price
      of the 100% stock equity of Haina is 3,000,000RMB; the price should be paid
      to
      the Vendors according to the list at the beginning of this
      Agreement.

    Article
      3. The time of Payment; Time limit and the Closing method.

    Payment
      shall be made
      within
      one month of entry into this agreement with title to transfer upon receipt
      of
      appropriate government consents.

     

    
      
        
        

      

      
        1

        
          

        

      

      
        
        

      

    

     

    Article
      4. Tax. 

    According
      to PRC law, each of the two sets of parties shall be responsible for their
      own
      taxes incurred by the transfer of shares and payment respectively.

    Article
      5. Arrangement of officers and workers. 

    After
      the
      acquisition, Mr Zhang Yukun will be the authorized officer of Haina, the
      managers of Haina will be appointed by the Transferee.

    Article
      6. Damages for Breach of Contract. 

    After
      the
      execution of this agreement, it is binding on the all parties. 

    Should
      either party default the breaching party shall assume responsibility for costs
      of the other party. 

    1.
      If the
      Vendors do not arrange the transfer of ownership to the Transferee, for the
      Vendor shall pay as damages, in accordance with the transfer of ownership,
      1,200
      RMB of Value as a daily penalty in the form of the reduction in the purchase
      price paid herein; and, if Vendors do not cause the closing for more than three
      months, the Transferee has the right to terminate this contract. 

    2.
      If the
      Transferee does not arrange for payment of funds to the vendor, 

    the
      daily
      late payment penalty amount to the Vendor shall be 1,200 RMB penalty in the
      form
      of an increase in the purchase price paid herein; and, if Transferee does not
      cause the funding for a closing for more than three months, the Vendor has
      the
      right to terminate this contract. 

    3.
      If any
      of the parties are in any other violation, breach of contract, the other party
      shall be compensate for all the economic losses. 

    4.  The
      financial statements and the list of Vendors which have provided must have
      a
      real property legitimacy, fair responsible for the assignment or in the process
      and, if the financial situation and property inventory and the actual situation
      in any inaccuracies, vendor assume s the corresponding liability. 

    Article
      7. Procedures for Dispute Resolution. 

    Disputes
      arising from or relating to the contract shall be settled through friendly
      consultations; if consensus can not be reached, either party has the right
      to
      files suit in the district court. 

    Article
      8. Applicable law. 

    This
      contract shall be construed in accordance with PRC law for effectiveness,
      performance, interpretation, liability for breach of contract, dispute
      settlement. 

    Article
      9. The commencement and termination.
      

    The
      shall
      agreement become effective on the date that both sides have executed this
      agreement.

    This
      contract shall be deemed terminated after registration change and the transferee
      pay equity transfer price.

    Article
      10. Other Matters. 

    1.
      If
      there are any unaddressed issues or interpretations relating to this contract,
      the same shall be resolved by both sides in good faith by a supplementary
      agreement. 

    2.
      The
      contract shall be executed in 4 copies, each of the Vendor, the Transferee,
      and
      two for the related government offices. 

    3.
      The
      contract signed by the Vendors, the Transferee or authorized representatives
      of
      the both sides on December 31, 2007 in Harbin, China. 

    

    
      
        
        

      

      
        2

        
          

        

      

      
        
        

      

    

     

    vendor:

     

    signature: 

     

    transferee: 

    

     

     

    
      
        
        

      

      
        3Unassociated Document

    PURCHASE
      AGREEMENT

    (North
      Slope Leases)

    

    THIS
      AGREEMENT, dated effective as of April 18, 2008, is between DANIEL K. DONKEL
      (“Donkel”) and SAMUEL H. CADE (“Cade”)(hereinafter collectively referred to
      as
      "Sellers")
      and
      COLUMBUS VENTURES, INC. (hereinafter called "Buyer").
      

    

    Recitations

    

    1. As
      reflected by the records of the Division of Oil and Gas, Department of Natural
      Resources of the State of Alaska State of Alaska Oil and Gas, the Sellers,
      as
      the lessees, have been granted the exclusive right to drill for, extract,
      remove, process and dispose of oil and gas and associated substances under
      Leases ADL nos. 390947, 390956, 390987, 390988, 390989, and 390990 (hereinafter
      called the “Leases”);
      

    

    2. In
      addition to the lands constituting the Leases as more particularly described
      in
      Exhibit A attached hereto, pertinent information concerning each of the Leases
      is set forth below: 

    

      
        	
                 

              	 	 	 	 	 	
                Lease

              	 
	
                 

              	 	 	
                 

              	
                 

              	
                 

              	
                Effective
                  Date/

              	
                 

              	
                 

              	
                Expiration

              	
                 

              
	
                Lease
                  

              	
                 

              	
                 

              	
                Acreage
                  of Lease

              	
                 

              	
                 

              	
                Rent
                  Due Date

              	
                 

              	
                 

              	
                Date

              	 
	 	 	 	 	 	 	 	 	 	 	 
	
                ADL
                  390947

              	 	 	
                5,760.00
                  acres

              	 	 	
                02/01/2007

              	 	 	
                01/31/2012

              	 
	
                ADL
                  390956

              	 	 	
                2,450.00
                  acres

              	 	 	
                02/01/2007

              	 	 	
                01/31/2012

              	 
	
                ADL
                  390987

              	 	 	
                2,560.00
                  acres

              	 	 	
                02/01/2007

              	 	 	
                01/31/2012

              	 
	
                ADL
                  390988

              	 	 	
                2,560.00
                  acres

              	 	 	
                02/01/2007

              	 	 	
                01/31/2012

              	 
	
                ADL
                  390989

              	 	 	
                2,555.00
                  acres

              	 	 	
                02/01/2007

              	 	 	
                01/31/2012

              	 
	
                ADL
                  390990

              	 	 	
                2,533.00
                  acres

              	 	 	
                02/01/2007

              	 	 	
                01/31/2012

              	 
	 	 	 	 	 	 	 	 	 	 	 
	
                TOTAL:

              	 	 	
                18,418.00
                  acres

              	 	 	 	 	 	 	 

      

    

     

    3 Sellers
      desire to sell and convey to Buyer, and Buyer desires to purchase and acquire
      from Sellers, the Leases upon the terms and conditions hereinafter provided
      for
      in this Agreement.

    

    IN
      CONSIDERATION of the above recitals and of the benefits to be derived by each
      of
      the parties to this Agreement, it is hereby agreed as follows:

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    Agreement

    

    1. Sale
      and Purchase:
      Sellers
      agree to sell and convey to Buyer, and Buyer agrees to purchase and acquire
      from
      the Sellers, the Leases, subject to the terms and conditions of this
      Agreement.

    

    2. Purchase
      Price:
      The
      total purchase price to be paid by the Buyer to the Sellers for the Leases
      shall
      be the sum of $621,607.50 (the "Purchase
      Price"),
      payable as provided below. The Purchase Price is allocated between and among
      the
      various Leases as follows:

    

      
        	
                Lease
                  

              	
                 

              	
                 

              	
                Purchase
                  Price for Lease

              	 
	 	 	 	 	 
	
                ADL
                  390947

              	 	
                $

              	
                194,400.00

              	 
	
                ADL
                  390956

              	 	
                $

              	
                82,687.50

              	 
	
                ADL
                  390987

              	 	
                $

              	
                86,400.00

              	 
	
                ADL
                  390988

              	 	
                $

              	
                86,400.00

              	 
	
                ADL
                  390989

              	 	
                $

              	
                86,231.25

              	 
	
                ADL
                  390990

              	 	
                $

              	
                85,488.75

              	 
	 	 	 	 	 
	
                TOTAL:

              	 	
                $

              	
                621,607.50

              	 

      

    

    

    The
      Buyer
      acknowledges and agrees that the Seller’s reservation of an overriding royalty
      interest on each Lease as set forth in Section 4 below is in addition to the
      receipt of the Purchase Price. 

    

    3. Payment
      of Purchase Price. 

    

    (a) The
      Purchase Price as set forth in Section 2 above shall be paid by the Buyer in
      installments on the following dates and in the indicated amounts:

    

    On
      or
      before Friday, April 18, 2008, $125,000.00 in cash or certified funds shall
      be
      due and payable, and

     

    On
      or
      before Friday, May 30, 2008, $115,000.00 in cash or certified funds shall be
      due
      and payable; and 

    

    On
      or
      before Friday, May 30, 2008, $115,000.00 in cash or certified funds shall be
      due
      and payable; and 

    

    On
      or
      before Friday, June 27, 2008, $115,000.00 in cash or certified funds shall
      be
      due and payable; and 

    

    On
      or
      before Friday, July 25, 2008, $115,000.00 in cash or certified funds shall
      be
      due and payable; and

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    
      	 	 	
              On
                or before Friday, August 29, 2008, the remaining $36,607.50 or, the
                remaining unpaid amount of the Purchase Price, in cash or certified
                funds
                shall be due and payable. 

            

    

    

       (b) Buyer
      shall deliver each of the installments of the Purchase Price as set forth in
      subparagraph (a) above by wire transfer in immediately available funds to an
      escrow account established by the accounting firm of Ryan, Gunsauls &
O’Donnell (the “Escrow
      Agent”)
      exclusively for this transaction. The wire transfer instructions are as
      follows:

    

      
        	 	
                Citywide
                  Bank

              	 
	 	
                ABA
                  # 107 001 070

              	 
	 	
                For
                  credit to Ryan Gunsauls & O’Donnell, P.C.

              	 
	 	
                Account
                  # 211 008 790

              	 

      

    

    

    (c) Buyer
      shall have the right to prepay any installment amount, but not a lesser amount,
      provided that such prepayment shall not defer or postpone the scheduled date
      of
      payment for any remaining installment payment provided for herein. 

    

    4. Execution
      and Delivery of Lease Assignments.
      Within a
      reasonable time following receipt of the entire Purchase Price by the Escrow
      Agent, Sellers shall execute, acknowledge (where applicable) and deliver to
      the
      Buyer, Assignments of each of the Leases in the form attached as Exhibit B
      transferring 100% of the record title to each of the Leases from Sellers to
      Buyer, or the Buyer’s designee, but reserving to Sellers, in the proportions
      reflected on attached Exhibit C, an overriding royalty equal to five percent
      (5%) of 8/8ths, which overriding royalty shall also apply to all renewals and
      extensions of the Leases

    

    5. Sellers’
      Representations:
      Each of
      the Sellers (who makes the following representations only to the extent of
      the
      interests owned by each of the Sellers in the Leases) represents, warrants
      and
      agrees to and with Buyer that:

    

    (a) As
      of the
      Closing, the Leases are in full force and effect, and Sellers have, as of the
      Closing, fully complied with all of the terms and provisions thereof which
      they
      are obligated to perform for all periods up to the Closing. Sellers shall own
      or
      otherwise have the right to assign and convey or cause to be assigned and
      conveyed the Leases, all of which shall be free and clear of any liens and
      encumbrances and provide for a net revenue interest to Buyer as
      follows:

    

    (i) With
      respect to all of the Leases, a net revenue interest to Buyer of not less than
      83.333%, prior to reservation of an overriding royalty equal to five percent
      (5%) of 8/8ths as
      provided for herein. 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    (b) There
      is
      no litigation or governmental investigation or proceeding pending or, to the
      knowledge of the Sellers, threatened affecting the Leases or which would have
      the effect of restraining or prohibiting any of the transactions contemplated
      by
      this Agreement.

    

    (c) This
      Agreement constitutes the valid and binding agreement of Sellers in accordance
      with its terms, and all instruments required hereunder to be executed by Sellers
      at the Closing shall constitute valid and binding agreements of Sellers in
      accordance with their terms. The execution, delivery and performance of this
      Agreement and the transactions contemplated hereby have been duly and validly
      authorized by all requisite action on the part of Sellers; 

    

    (d) This
      Agreement has been duly executed and delivered by Sellers and all instruments
      required hereunder to be delivered by each party at the Closing shall be duly
      executed and delivered by Seller; 

    

    (e) Sellers
      have incurred no liability, contingent or otherwise, for brokers' or finders'
      fees in respect of this transaction for which Buyer shall have any
      responsibility whatsoever; 

    

    (f) Sellers
      shall not enter into any new agreements or commitments or incur, or agree to
      incur, any contractual obligation or liability (absolute or contingent)
      affecting or relating to any of the Leases which extend beyond the Closing
      except in connection with the consummation of the transactions contemplated
      in
      this Agreement, without the written consent of Buyer; and

    

    6. Buyer's
      Representations:
      Buyer
      represents, warrants and agrees to and with Sellers that:

    

    (a) This
      Agreement constitutes the valid and binding agreement of Buyer in accordance
      with its terms, and all instruments required hereunder to be executed by Buyer
      at the Closing shall constitute valid and binding agreements of Buyer in
      accordance with their terms. The execution, delivery and performance of this
      Agreement and the transactions contemplated hereby have been duly and validly
      authorized by all requisite action on the part of Buyer; 

    

    (b) Buyer
      has
      good right and lawful authority to purchase and pay for the Leases as
      contemplated by this Agreement; 

    

    (c) This
      Agreement has been duly executed and delivered by Buyer and all instruments
      required hereunder to be delivered by Buyer at the Closing shall be duly
      executed and delivered by Buyer; 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    (d) Buyer
      has
      incurred no liability, contingent or otherwise, for brokers' or finders' fees
      in
      respect of this transaction, for which Sellers shall have any responsibility
      whatsoever; and 

    

    (e) Buyer
      has
      relied upon his own independent investigation made by it and its respective
      representatives, if any, and have made such investigation of the Leases as
      deemed appropriate under the circumstances. Buyer has not been given any oral
      or
      written representations or assurance from Sellers other than as set forth
      herein. 

    

    7. Sellers’
      Conditions of Closing:
      The
      obligations of Sellers under this Agreement are subject, at the option of
      Sellers, to the satisfaction at or prior to the Closing of the following
      conditions:

    

    (a) All
      representations and warranties of Buyer contained in this Agreement shall be
      true in all material respects at and as of the Closing as if such
      representations and warranties were made at and as of the Closing; and

    

    (b) Buyer
      shall have performed and satisfied all agreements required by this Agreement
      to
      be performed and satisfied by Buyer at or prior to the Closing, including
      payment on or at Closing to the Escrow Agent of that portion of the Purchase
      Price which Buyer is obligated to pay as set forth in Section 3(a) above.

    

    Should
      the above conditions not be satisfied to Sellers’ satisfaction as of the
      Closing, Sellers may terminate this Agreement without further liability of
      either Sellers or Buyer.

    

    8. Buyer's
      Conditions of Closing:
      The
      obligations of Buyer under this Agreement are subject, at the option of Buyer,
      to the satisfaction at or prior to the Closing of the following
      conditions:

    

    (a) All
      representations and warranties of Sellers contained in this Agreement shall
      be
      true in all material respects at and as of the Closing as if such
      representations and warranties were made at and as of the Closing; and

    

    (b) Sellers
      shall have performed and satisfied all agreements required by this Agreement
      to
      be performed and satisfied by Sellers at or prior to the Closing. 

    

    Should
      the above conditions not be satisfied to Buyer's satisfaction as of the Closing,
      Buyer shall, as his sole and exclusive remedy, terminate this Agreement without
      further liability between the Buyer and Sellers. 

    

    9. Closing:
      Unless
      extended pursuant to the terms of this Agreement, the closing of this
      transaction (the “Closing”)
      shall
      be held on April 18, 2008, at a place and time mutually agreed to by the
      parties. Notwithstanding
      the foregoing or any other provision herein, if, by the close of business on
      April 18, 2008, Anchorage, Alaska time, this Agreement is not fully executed
      by
      all signatory parties hereto and if the initial $125,000.00 installment payment
      provided for in Section 3(a) above has not been received by the Escrow Agent,
      then this Agreement shall be null and void and the Buyer and Sellers shall
      have
      no further rights or obligations hereunder. 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    10. Actions
      at Closing.
      At the
      Closing, the parties shall proceed as follows:

    

       (a) The
      Escrow Agent shall release the initial One Hundred Twenty Five Thousand and
      00/100 Dollars ($125,000.00) of the Purchase Price received in the Escrow
      Account to the Sellers in the following amounts: 

    

      
        	
                Daniel
                  K. Donkel

              	 	
                $

              	
                31,250.00

              	 
	
                Samuel
                  H. Cade

              	 	
                $

              	
                93,750.00

              	 
	
                Subtotal:

              	 	
                $

              	
                125,000.00

              	 

      

    

    

    (b) At
      the
      Closing and thereafter as may be necessary, all of the parties hereto shall,
      without further consideration, execute, acknowledge and deliver such other
      instruments and shall take such other action as may be necessary to carry out
      their obligations under this Agreement.

    

    11. Post-Closing
      Actions by Sellers.
      Within a
      reasonable time following the date when the Buyer has paid the full Purchase
      Price but in no event latter than 30 days from said date, the Sellers shall
      execute and deliver the Assignments for each of the Leases to the Buyer in
      accordance with the provisions of Section 4 above.

    

    12. Post-Closing
      Actions by Escrow Agent.
      After
      the Closing, the Escrow Agent shall proceed as follows:

    

    (a) Upon
      receipt from Buyer of the $115,000.00 installment obligation of the Purchase
      Price due and payable on or before Friday, May 30, 2008, the Escrow Agent shall
      release such funds to the Sellers in the following amounts:

    

      
        	
                Daniel
                  K. Donkel

              	 	
                $

              	
                28,750.00

              	 
	
                Samuel
                  H. Cade

              	 	
                $

              	
                86,250.00

              	 
	
                Total:

              	 	
                $

              	
                115,000.00

              	 

      

    

    

    (b) Upon
      receipt from Buyer of the $115,000.00 installment obligation of the Purchase
      Price due and payable on or before Friday, May 30, 2008, the Escrow Agent shall
      release such funds to the Sellers in the following amounts:

    

      
        	
                Daniel
                  K. Donkel

              	 	
                $

              	
                28,750.00

              	 
	
                Samuel
                  H. Cade

              	 	
                $

              	
                86,250.00

              	 
	
                Total:

              	 	
                $

              	
                115,000.00

              	 

      

    

    

    (c) Upon
      receipt from Buyer of the $115,000.00 installment obligation of the Purchase
      Price due and payable on or before Friday, June 27, 2008, the Escrow Agent
      shall
      release such funds to the Sellers in the following amounts:

    
      

        
          	
                  Daniel
                    K. Donkel

                	 	
                  $

                	
                  28,750.00

                	 
	
                  Samuel
                    H. Cade

                	 	
                  $

                	
                  86,250.00

                	 
	
                  Total:

                	 	
                  $

                	
                  115,000.00

                	 

        

      

       

    

    (d) Upon
      receipt from Buyer of the $115,000.00 installment obligation of the Purchase
      Price due and payable on or before Friday, July 25, 2008, the Escrow Agent
      shall
      release such funds to the Sellers in the following amounts:

    
      

        
          	
                  Daniel
                    K. Donkel

                	 	
                  $

                	
                  28,750.00

                	 
	
                  Samuel
                    H. Cade

                	 	
                  $

                	
                  86,250.00

                	 
	
                  Total:

                	 	
                  $

                	
                  115,000.00

                	 

        

      

       

    

    (e) Upon
      receipt from Buyer of the $ 36,607.50 installment obligation of the Purchase
      Price due and payable on or before Friday, August 29, 2008, the Escrow Agent
      shall release such funds to the Sellers in the following amounts:

    

      
        	
                Daniel
                  K. Donkel

              	 	
                $

              	
                9,151.88

              	 
	
                Samuel
                  H. Cade

              	 	
                $

              	
                27,455.62

              	 
	
                Total:

              	 	
                $

              	
                36,607.50

              	 

      

    

    

    (f) After
      the
      Closing as may be necessary, all of the parties hereto shall, without further
      consideration, execute, acknowledge and deliver such other instruments and
      shall
      take such other action as may be necessary to carry out their obligations under
      this Agreement.

    

    13. Post-Closing
      Provisions:
      After
      the Closing, the following additional provisions shall become
      operative:

    

    (a) Buyer
      or
      its designee shall assume all obligations of Sellers under the Leases for all
      periods from and after the date of this Agreement, including the obligation
      to
      timely pay all rentals thereafter due under such Leases. 

    

    (b) The
      Sellers shall promptly deliver to the Buyer any and all letters, notices and
      any
      other documents pertaining to, or applicable to, the Leases.

    

    (c) Should
      Buyer or its designee elect not to pay rentals on any of the Leases, then Buyer
      or its designee shall notify Sellers in writing, by certified mail, not later
      than forty-five (45) days prior to a rental payment date, and shall promptly
      execute and deliver to Sellers, or their designee(s), an assignment of the
      applicable Lease or Leases free and clear of all liens and encumbrances except
      the overriding royalties created by this Agreement, such assignment to be on
      a
      form reasonably acceptable to Sellers or their designee(s). 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    14. Limitation
      of Liability; Indemnification.
      If a
      Seller has properly executed, acknowledged and delivered any and all Assignments
      attributable to his interest in the Leases and otherwise performed all
      obligations imposed on him pursuant to this Agreement, the Buyer shall not
      have
      any claim or remedy against such Seller. Each Seller (the “Indemnitor”) shall
      indemnify and hold the other Sellers harmless with respect to any claim, damage,
      liable and cost or expense (including reasonable attorney’s fees) attributable
      to any act, omission or other conduct of the Indemnitor in connection with
      this
      Agreement. 

    

    15. Events
      of Default and Remedies.

    

    (a) Events
      of Default.
      The
      occurrence of any one or more of the following events shall constitute an event
      of default (“Event of Default”) hereunder:

    

    (i) If
      the
      Buyer fails to pay the second or any subsequent installment payment of the
      Purchase Price within (5) business days of its due date as set forth in Section
      3(a) above.

    

    (ii) The
      failure by any party to this Agreement to perform or comply with any
      non-monetary obligation imposed upon it pursuant to this Agreement, which
      failure shall continue for a period of 15 days after receipt of written notice
      thereof from the non-defaulting party. If, prior to the expiration of such
      15
      day period, the defaulting party shall have cured such default, or if the
      default can not be cured within 15 days, shall have in good faith commenced
      and
      be diligently proceeding to cure, and shall cure, such default within 45 days,
      then such party shall not be deemed to be in default. 

    

    (iii) The
      Buyer
      shall (1) apply for or consent to the appointment of a receiver, trustee or
      liquidator of itself or for its property, (2) be unable, or admit in writing
      its
      inability, to pay its debts as they mature, (3) make a general assignment for
      the benefit of creditors, (4) be adjudicated as bankrupt or insolvent, or (5)
      filed a voluntary petition in bankruptcy, or a petition or answer seeking
      reorganization or an arrangement with creditors or seeking to take advantage
      of
      any insolvency law, or an answer admitting the material allegations of a
      petition filed against it in any bankruptcy, reorganization or insolvency
      proceeding, or take any other action for the purpose of effecting any of the
      foregoing. 

    

    (b) Default
      Interest Payable on Delinquent Payments.
      In the
      event that Buyer fails to pay any installment payment of the Purchase Price
      within five (5) business days of its due date as set forth in Section 3(a)
      above, said amount or amounts shall bear interest at the default rate of 15%
      per
      annum until said delinquent payment(s) together with accrued interest as
      provided for herein is paid in full. 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    (c) Remedies.
      Upon the
      occurrence of an Event of Default or at any time thereafter, the non-defaulting
      party may pursue any and all rights or remedies available to it, whether at
      law,
      in equity, by statute or otherwise, to enforce collection of all amounts and
      performance of all other obligations due and owing to it. If they are the
      non-defaulting party, the Sellers may pursue any and all of the foregoing rights
      and remedies and may further pursue other specific remedies including, without
      limitation, the following:

    

    (i)  If
      an
      Event of Default arises under Section 15(a)(i) above, the Sellers and Buyer
      expressly agree that the extent of the injury and consequent damages to the
      Sellers will be difficult to ascertain with certainty because of many factors
      including, without limitation, the uncertainty of securing other qualified
      purchasers for the Leases on a timely basis and the uncertainty of obtaining
      purchase terms for the Leases as set forth herein. Accordingly, and
      notwithstanding any other provision of this Agreement, the Buyer and Sellers
      expressly agree that, upon an Event of Default under Section 15(a)(i) above,
      the
      Sellers, in their sole discretion, may elect to cancel and terminate this
      Agreement and also keep and retain the amount of $125,000.00, which shall be
      considered as liquidated damages and not a penalty or forfeiture. Upon such
      election, the Sellers shall be obligated to pay, and shall pay, to the Buyer
      an
      amount equal to all installment amounts paid by the Buyer pursuant to Section
      3(a) above less the $125,000.00 in liquidated damages. 

    

    (ii) In
      addition to the foregoing, or in lieu thereof, if an Event of Default arises
      under the provisions of Section 15(a) above, the Sellers may, at their option
      and without notice, pursue any and all other rights and remedies available
      at
      law or in equity, for damages, specific performance or otherwise including,
      without limitation, the right to accelerate and declare any and all amounts
      of
      the unpaid Purchase Price immediately due and payable. 

    

    (d) Remedies
      Cumulative.
      Each and
      every right, power and remedy hereunder shall be cumulative and shall be in
      addition to every other right, power and remedy now or hereafter existing at
      law, in equity, by statute or otherwise. Each and every right, power and remedy
      may be exercised from time to time as often and in such order as may be
      determined by a party, and the exercise or the beginning of the exercise of
      any
      right, power or remedy shall not be construed to be a waiver of the right to
      exercise at the same time or thereafter any other right, power or remedy. No
      delay or omission by a party in the exercise of any right, power or remedy
      shall
      impair any such right, power or remedy or be construed to be a waiver of any
      default or to be an acquiescence therein. 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    (e) Attorney’s
      Fees.
      In the
      event of any litigation between the parties concerning enforcement of, or
      remedies under, the terms of this Agreement, the court shall award the
      prevailing party its costs and expenses, including reasonable attorney’s fees,
      incurred in connection with such litigation. 

    

    16. Miscellaneous:
      

    

    (a) Governing
      Law.
      This
      Agreement and all instruments executed in accordance with it shall be governed
      by and interpreted in accordance with the laws of the State of Alaska, without
      regard to conflict of law rules that would direct application of the laws of
      another jurisdiction.

    

    (b) Entire
      Agreement.
      This
      Agreement constitutes the entire agreement between the parties and supercedes
      all prior agreements, understandings, negotiations and discussions, whether
      oral
      or written, of the parties. No supplement, amendment, alteration, modification,
      waiver or termination of this Agreement shall be binding unless executed in
      writing by the parties hereto. 

    

    (c) Waiver.
      No
      waiver of any of the provisions of this Agreement shall be deemed or shall
      constitute a waiver of any other provisions hereof (whether or not similar),
      nor
      shall such waiver constitute a continuing waiver unless otherwise expressly
      provided. 

    

    (d) Captions.
      The
      captions in this Agreement are for convenience only and shall not be considered
      a part of or affect the construction or interpretation of any provision of
      this
      Agreement. 

    

    (e) Assignment.
      Prior
      to the Closing, no party hereto shall assign this Agreement or any of its rights
      or obligations hereunder without the prior written consent of the other parties,
      and any assignment made without such consent shall be void ab
      initio.
      Except
      as otherwise provided herein, this Agreement shall be binding upon and inure
      to
      the benefit of the parties hereto and their respective permitted heirs,
      successors and assigns. 

    

    (f) Notices.
      Any
      notice provided or permitted to be given under this Agreement shall be in
      writing, and may be served by personal delivery or by depositing same in the
      mail, addressed to the party to be notified, postage pre-paid, and registered
      or
      certified with a return receipt requested. Notice deposited in the mail in
      the
      manner hereinabove described shall be deemed to have been given and received
      on
      the date of the delivery as shown on the return receipt. Notice served in any
      other manner shall be deemed to have been given and received only if and when
      actually received by the addressee. For purposes of notice, the addresses of
      the
      parties shall be as follows: 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    Sellers’
      Mailing Address:
      

    

    Daniel
      K.
      Donkel 

    546
      Rio
      Vista Avenue

    Daytona
      Beach, Florida 32114

    

    Samuel
      H.
      Cade

    3701
      Junius Street

    Dallas,
      TX 75246

    

    Buyer's
      Mailing Address:
      

    

    Alvaro
      Vollmers 

    Columbus
      Ventures, Inc.

    810
      Peace
      Portal Drive, Suite 210

    Blaine,
      Washington 98230

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    Escrow
      Agent’s Mailing Address:

    

    Douglas
      Barr, CPA

    Ryan
      Guansauls & O’Donnell

    5590
      E.
      Yale Avenue, #201

    Denver,
      Colorado 80222

    

    Each
      party shall have the right, upon giving ten (10) days' prior notice to the
      other
      in the manner hereinabove provided, to change its address for purposes of
      notice. 

    

    (g) Expenses.
      Except
      as otherwise provided herein, each party shall be solely responsible for all
      expenses incurred by it in connection with this transaction. 

    

    (h) Joint
      Preparation.
      This
      Agreement shall be deemed for all purposes to have been prepared through the
      joint efforts of the parties hereto and shall not be construed for or against
      one party or any other party as a result of the preparation, submittal,
      drafting, execution or other event of negotiation hereof.

    

    (i) Severability.
      If any
      term or other provision of this Agreement is invalid, illegal or incapable
      of
      being enforced under any rule of law, all other conditions and provisions of
      this Agreement shall nevertheless remain in full force and effect so long as
      the
      economic or legal substance of the transactions contemplated hereby is not
      affected in a materially adverse manner with respect to either party.

    

    (j) Counterpart
      Execution.
      For
      the
      sake of simplicity in execution, this Agreement may be executed by original
      or
      telefax signature in any number of counterparts, each of which shall be deemed
      an original hereof. All counterparts of this Agreement which are executed by
      telefax signature shall be valid and binding as original signatures for all
      purposes (evidentiary or otherwise). 

     

    [SIGNATURE
      PAGE FOLLOWS]

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    EXECUTED
      as of the respective acknowledgment dates of the signatory parties; effective
      as
      of the date first above mentioned.

     

    
      	 	 	 
	 	SELLERS:
	 
 	 
 	 
 
	
            	By:  	/s/
              Daniel K. Donkel
	 	
              
DANIEL
              K. DONKEL

    

    
      
        	 	 	 
	 
 	 
 	 
 
	
              	By:  	/s/
                Sameuel H. Cade
	 	
                
SAMUEL
                H. CADE
	 	 

      

    

    
       

      
        	 	BUYER: 
	 	 	 
	 	COLUMBUS
                VENTURES,
                INC
	 
 	 
 	 
 
	
              	By:  	/s/
                Alvaro Vollmers
	 	
                
Alvaro
                Vollmers, CEO

      

       

       

       

      
        ESCROW
          AGENT AGREES TO THE 

        TERMS
          SET
          FORTH IN SECTIONS 3, 10 and 

        12
          OF
 THE
          FOREGOING AGREEMENT:

      

      
        	 	 	 	 	 
	RYAN GUNSAULS &
                O’DONNELL	 	 	 
	 	
                 

                 

              	 	 	 
	By 	/s/ Douglas
                Barr	 	 	
              
	 	
                
Douglas
                Barr	 	 	
              

      

      
        

          
            
              
              

            

            
              
              

              
                

              

            

            
              
              

            

          

      

    

    EXHIBIT
      A

    PART
      I: ISSUED LEASES 

    

      
        	
                ADL
                  390947 Legal Description

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  22 

              	
                 

              	
                 

              	
                Total
                  Acres: 640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  23 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                  Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N

              	
                 

              	
                 

              	
                Range:
                  016E

              	
                 

              	
                 

              	
                Section:
                  24

              	
                 

              	
                 

              	
                Total
                  Acres: 640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  25 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  26 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  27 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  34 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  35 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  007N 

              	
                 

              	
                 

              	
                Range:
                  016E 

              	
                 

              	
                 

              	
                Section:
                  36 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	 
	
                 THIS
                  TRACT CONTAINS 5,760.000 ACRES, MORE OR
                  LESS.

              

      

      
        	
                ADL
                  390956 Legal Description

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township: 
                  008N 

              	
                 

              	
                 

              	
                Range: 
                  014E

              	
                 

              	
                 

              	
                Section: 
                  17

              	
                 

              	
                 

              	
                Total
                  Acres: 640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township: 
                  008N 

              	
                 

              	
                 

              	
                Range: 
                  014E

              	
                 

              	
                 

              	
                Section: 
                  18

              	
                 

              	
                 

              	
                Total
                  Acres:
                  584

              	
                 

              
	
                  Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township: 
                  008N 

              	
                 

              	
                 

              	
                Range: 
                  014E

              	
                 

              	
                 

              	
                 
                  Section: 19  

              	
                 

              	
                 

              	
                Total
                  Acres: 586

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township: 
                  008N 

              	
                 

              	
                 

              	
                Range: 
                  014E

              	
                 

              	
                 

              	
                Section:
                  20  

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              

      

      
        	
                
                   THIS
                    TRACT CONTAINS 2,450.000 ACRES, MORE OR
                    LESS.

                

              

      

    

     

    ADL
      390987 Legal Description

    
      
        	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  01 

              	
                 

              	
                 

              	
                Total
                  Acres: 640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  02 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                  Meridian: 
                  U 

              	
                 

              	
                 

              	
                 Township:
                  009N

              	
                 

              	
                 

              	
                 Range:
                  014E

              	
                 

              	
                 

              	
                 Section:
                  11

              	
                 

              	
                 

              	
                Total
                  Acres: 640
                  

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  12 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	 

      

    

     
      THIS TRACT CONTAINS 2,560.000 ACRES, MORE OR LESS.

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    ADL
      390988 Legal Description

    
      
        	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  15 

              	
                 

              	
                 

              	
                Total
                  Acres: 640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  16 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                 
                  Meridian:  U 

              	
                 

              	
                 

              	
                 Township:
                  009N

              	
                 

              	
                 

              	
                 Range:
                  014E

              	
                 

              	
                 

              	
                 Section:
                  21

              	
                 

              	
                 

              	
                Total
                  Acres: 640
                  

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  22 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	 

      

    

      
      THIS TRACT CONTAINS 2,560.000 ACRES, MORE OR LESS.

    

    ADL
      390989 Legal Description

    
      
        	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  29 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  30 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  636

              	
                 

              
	
                 
                  Meridian:  U 

              	
                 

              	
                 

              	
                 Township:
                  009N

              	
                 

              	
                 

              	
                 Range:
                  014E

              	
                 

              	
                 

              	
                 Section:
                  31

              	
                 

              	
                 

              	
                Total
                  Acres: 639
                  

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  014E 

              	
                 

              	
                 

              	
                Section:
                  32 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	 

      

    

      
      THIS TRACT CONTAINS 2,555.000 ACRES, MORE OR LESS.

    

    ADL
      390990 Legal Description

    
      
        	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  015E 

              	
                 

              	
                 

              	
                Section:
                  05 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  015E 

              	
                 

              	
                 

              	
                Section:
                  06 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  625

              	
                 

              
	
                 
                  Meridian:  U 

              	
                 

              	
                 

              	
                 Township:
                  009N

              	
                 

              	
                 

              	
                 Range:
                  015E

              	
                 

              	
                 

              	
                 Section:
                  07

              	
                 

              	
                 

              	
                Total
                  Acres: 628
                  

              	
                 

              
	
                Meridian: 
                  U 

              	
                 

              	
                 

              	
                Township:
                  009N 

              	
                 

              	
                 

              	
                Range:
                  015E 

              	
                 

              	
                 

              	
                Section:
                  08 

              	
                 

              	
                 

              	
                Total
                  Acres:
                  640

              	 

      

    

      
      THIS TRACT CONTAINS 2,533.000 ACRES, MORE OR LESS.

    

    EXHIBIT
      B

    ASSIGNMENT
      FORM

    

      
        	
                DO&G
                  25-84 

              	
                LEASE
                  ADL _________________

              
	 	 
	
                (LEASE
                  ASSIGNMENT) 

              	
                EFFECTIVE
                  DATE 

              
	
                Revised
                  12/01 

              	
                OF
                  LEASE ___________________

              
	
                DNR
                  #10-113 

              	
                Is
                  this lease producing? _____yes ______no

              

      

       

      
        
          
          

        

        
          
          

          
            

          

        

        
          
          

        

      

    

    

    STATE
      OF ALASKA

    DEPARTMENT
      OF NATURAL RESOURCES

    DIVISION
      OF OIL AND GAS

    

    ASSIGNMENT
      OF INTEREST IN OIL AND GAS LEASE

    

    The
      undersigned
      assignor____________________________________________________________________,
      

    whose
      address is_____________________________________________________________,

    as
      owner
      of ______________________________________ percent of the lease's working
      interest does hereby assign to
      ___________________________________________________, the assignee, whose address
      is __________________________________________________, 

    

    1.
      ________________________________________ percent working interest; 

    2.
      ________________________________________ percent overriding royalty interest.
      

    3.
      The
      assignor is retaining ________________________ percent of the lease's working
      interest. 

    4.
      The
      assignor is retaining ________________________ percent of overriding royalty
      interest. 

    5.
      LANDS
      AFFECTED by this assignment of interest (Attach Exhibit A if necessary)

    T__________,
      R ____________, ______________ Meridian 

    

     

    

    

    containing
      ___________________________acres, more or less. 

    

    The
      Notification Lessee for the purpose of receiving any and all notices from the
      State of Alaska in connection with the lease will be: 

    

    

    Name_______________________________________________________________________

    

    Attn:________________________________________________________________________

    

    Address
      _____________________________________________________________________

    City,
      State, Zip
      ________________________________________________________________

    

    

    We,
      the
      undersigned, request the approval of this assignment application. We attest
      that
      this application discloses all parties receiving an interest in the lease and
      that it is filed pursuant to 11 AAC 82.605 and 11 AAC 82.615. We further attest
      that all parties to this agreement are qualified to transfer or hold an interest
      in oil and gas leases pursuant to 11 AAC 82.200 and 11 AAC 2.205. Whether
      approved in whole or in part, the assignee agrees to be bound by the provisions
      of said lease. 

    

    

    Assignor's
      Signature _______________________________ Date
      _______________________

    

    Assignor's
      Name (Print or Type) & Title
      ____________________________________________

    

    Company
      Name
      _______________________________________________________________

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

     

    DNR
      Qualification File # __________________

    

    THE
      UNITED STATES OF AMERICA   )
      

    )SS

    STATE
      OF
      ______________________ )

    

    This
      certifies that on the ___________day of _____________________, 20 _____, before
      me, a notary public in and for the State of
      _______________________________________________, duly commissioned and sworn,
      personally appeared __________________________________________, to me known
      and
      known to me to be the person described in, and who executed the foregoing
      assignment, who then after being duly sworn according to law, acknowledged
      to me
      under oath that he executed same freely and voluntarily for the uses and
      purposes therein mentioned. WITNESS my hand and official seal the day and year
      in this certificate first above written. 

    

    __________________________________
      

    

    Notary
      Public 

    My
      Commission expires ______________ 

    

    Assignee's
      Signature ________________________________Date_________________________

    

    Assignee's
      Name (Print or Type) & Title
      ____________________________________________

    

    Company
      Name
      _______________________________________________________________

    

    DNR
      Qualification File # ________________________ 

     

    
      
        
        

      

      
        
        

        
          

        

      

      
        
        

      

    

    THE
      UNITED STATES OF AMERICA   )
      

    )SS.
      

    STATE
      OF
      ______________________ )
      

    

    This
      certifies that on the ___________ day of _______________, 20 _____, before
      me, a
      notary public in and for the State of
      _________________________________________________, duly commissioned and sworn,
      personally appeared _________________________________________, to me known
      and
      known to me to be the person described in, and who executed the foregoing
      assignment, who then after being duly sworn according to law, acknowledged
      to me
      under oath that he executed same freely and voluntarily for the uses and
      purposes therein mentioned. WITNESS my hand and official seal the day and year
      in this certificate first above written. 

    

    Notary
      Public 

    My
      Commission expires ______________

    

    

    APPROVAL

    

    

    The
      foregoing assignment is approved as to the lands described in item 5 thereof,
      effective as of the date set forth below. 

    

    Mark
      D.
      Myers, Director
      _________________________________________________________

    Division
      of Oil and Gas, DNR, State of Alaska 

    

    

    Effective
      Date of Assignment _________________________________________

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