Common use of Initial Period of Exercisability Clause in Contracts

Initial Period of Exercisability. The Option will become exercisable with respect to the Option Shares in 4 installments. The following table sets forth the initial dates of exercisability of each installment and the number of Option Shares as to which this Option will become exercisable on such dates: Initial Date of Number of Option Shares Exercisability Available for Exercise -------------- ----------------------- August 21, 1997 117,000 August 21, 1998 117,000 August 21, 1999 117,000 The foregoing rights to exercise this Option will be cumulative with respect to the Option Shares becoming exercisable on each such date, but in no event will this Option be exercisable after, and this Option will become void and expire as to all unexercised Option Shares at, 5:00 p.m. (Minneapolis, Minnesota time) on August 21, 2003 (the "Time of Termination").

Initial Period of Exercisability. The Option will shall become exercisable with respect to the Option Shares in 4 three installments. The following table sets forth the initial dates of exercisability of each installment and the number of Option Shares as to which this Option will shall become exercisable on such dates: Initial Date of Number of Option Shares Exercisability Available for Exercise -------------- ----------------------- August 21, 1997 117,000 August 21---------------------- March 7, 1998 117,000 August 213,445 March 7, 1999 117,000 3.444 March 7, 2000 3,444 The foregoing rights to exercise this Option will shall be cumulative with respect to the Option Shares becoming exercisable on each such date, date but in no event will shall this Option be exercisable after, and this Option will shall become void and expire as to all unexercised Option Shares at, 5:00 p.m. (Minneapolis, Minnesota time) on August 21March 3, 2003 2007 (the "Time of Termination").

Initial Period of Exercisability. The Option will become exercisable with respect to the Option Shares in 4 four installments. The following table sets forth the initial dates of exercisability of each installment and the number of Option Shares as to which this Option will become exercisable on such dates: Initial Date of Number of Option Shares Exercisability Available for Exercise -------------- --------------- ----------------------- August 21, 1996 125,000 August 21, 1997 117,000 133,000 August 21, 1998 117,000 133,000 August 21, 1999 117,000 133,000 August 21, 2000 125,000 The foregoing rights to exercise this Option will be cumulative with respect to the Option Shares becoming exercisable on each such date, but in no event will this Option be exercisable after, and this Option will become void and expire as to all unexercised Option Shares at, 5:00 p.m. (Minneapolis, Minnesota time) on August 21, 2003 (the "Time of Termination").

Initial Period of Exercisability. The Option will shall become exercisable with respect to the Option Shares in 4 three installments. The following table sets forth the initial dates of exercisability of each installment and the number of Option Shares as to which this Option will shall become exercisable on such dates: Initial Date of Number of Option Shares Exercisability Available for Exercise -------------- --------------- ----------------------- August 21September 1, 1996 16,667 September 1, 1997 117,000 August 2116,667 September 1, 1998 117,000 August 21, 1999 117,000 16,666 The foregoing rights to exercise this Option will shall be cumulative with respect to the Option Shares becoming exercisable on each such date, date but in no event will shall this Option be exercisable after, and this Option will shall become void and expire as to all unexercised Option Shares at, 5:00 p.m. (Minneapolis, Minnesota time) on August 21September 1, 2003 2006 (the "Time of TerminationTIME OF TERMINATION").

Initial Period of Exercisability. The Option will shall become exercisable with respect to the Option Shares in 4 five installments. The following table sets forth the initial dates of exercisability of each installment and the number of Option Shares as to which this Option will shall become exercisable on such dates: Initial Date of Number of Option Shares Exercisability Available for Exercise -------------- INITIAL DATE OF NUMBER OF OPTION SHARES EXERCISABILITY AVAILABLE FOR EXERCISE --------------- ----------------------- August 21, 1997 117,000 August 21, 1998 117,000 August 21January 1, 1999 117,000 June 1, 1999 June 1, 2000 June 1, 2001 June 1, 2002 The foregoing rights to exercise this Option will shall be cumulative with respect to the Option Shares becoming exercisable on each such date, date but in no event will shall this Option be exercisable after, and this Option will shall become void and expire as to all unexercised Option Shares at, 5:00 p.m. (Minneapolis, Minnesota time) on August 21May 31, 2003 (the "Time of Termination").