Common use of of the Warrant Clause in Contracts

of the Warrant. Certificate(s) for such shares are to be issued and delivered as set forth below. Date: --------------------- (HOLDER) By: -------------------------- Its: ------------------------- Name to appear on the stock certificate: ------------------------------ (Please Print) Address: ------------------------------ Employer Identification Number, Social ------------------------------ Security Number or other identifying ------------------------------ number: If the foregoing exercise is not for all of the Warrant Shares purchasable under the Warrant, please register and deliver a new Warrant for the unexercised portion as follows: Name: ----------------------------------- (Please Print) Address: ------------------------------ Employer Identification Number, Social ------------------------------ Security Number or other identifying ------------------------------ number: Calculation of Cashless Exercise: A = Current Market Price: B = Exercise Price: X = Number of Shares of Common Stock to be issued for each right to purchase one Warrant Share exchanged: A - B ( ) ---------- 1 x = X ( ) -------------------------- ----------------

of the Warrant. Certificate(s) for such shares are to be issued and delivered as set forth below. Date: --------------------- (HOLDER) By: -------------------------- ___________________________ Its: ------------------------- __________________________ Name to appear on the stock certificate: ------------------------------ ____________________________ (Please Print) Address: ------------------------------ ____________________________ Employer Identification Number, Social ------------------------------ ____________________________ Security Number or other identifying ------------------------------ ____________________________ number: ________________________________ If the foregoing exercise is not for all of the Warrant Shares purchasable under the Warrant, please register and deliver a new Warrant for the unexercised portion as follows: Name: ----------------------------------- __________________________________ (Please Print) Address: ------------------------------ ____________________________ Employer Identification Number, Social ------------------------------ ____________________________ Security Number or other identifying ------------------------------ ____________________________ number: ________________________________ Calculation of Cashless Exercise: A = Current Market Price: ___________________ B = Exercise Price: ________________________ X = Number of Shares of Common Stock to be issued for each right to purchase one Warrant Share exchanged: A - B ( ) ---------- 1 x = X ( ) -------------------------- ----------------____________

of the Warrant. Certificate(s) for such shares are to be issued and delivered as set forth below. Date: --------------------- (HOLDER) By: -------------------------- ___________________________ Its: ------------------------- __________________________ Name to appear on the stock certificate: ------------------------------ ___________________________ (Please Print) Name to appear on the stock certificate: ____________________________ (Please Print) Address: ------------------------------ ____________________________ Employer Identification Number, Social ------------------------------ ____________________________ Security Number or other identifying ------------------------------ ____________________________ number: ________________________________ If the foregoing exercise is not for all of the Warrant Shares purchasable under the Warrant, please register and deliver a new Warrant for the unexercised portion as follows: Name: ----------------------------------- __________________________________ (Please Print) Address: ------------------------------ ____________________________ Employer Identification Number, Social ------------------------------ ____________________________ Security Number or other identifying ------------------------------ ____________________________ number: ________________________________ Calculation of Cashless Exercise: A = Current Market Price: ________________________ B = Exercise Price: X = Number of Shares of Common Stock to be issued for each right to purchase one Warrant Share exchanged: A - B ( ) ---------- 1 x = X ( ) -------------------------- ----------------______________________________

of the Warrant. Certificate(s) for such shares are to be issued and delivered as set forth below. Date: --------------------- (HOLDERXXXXXX) By: -------------------------- Its: ------------------------- Name to appear on the stock certificate: ------------------------------ (Please Print) Address: ------------------------------ Employer Identification Number, Social ------------------------------ Security Number or other identifying ------------------------------ number: If the foregoing exercise is not for all of the Warrant Shares purchasable under the Warrant, please register and deliver a new Warrant for the unexercised portion as follows: Name: ----------------------------------- (Please Print) Address: ------------------------------ Employer Identification Number, Social ------------------------------ Security Number or other identifying ------------------------------ number: Calculation of Cashless Exercise: A = Current Market Price: B = Exercise Price: X = Number of Shares of Common Stock to be issued for each right to purchase one Warrant Share exchanged: A - B ( ) ---------- 1 x = X ( ) -------------------------- ----------------