definiens: shall mean : ( i)with respect to the period beginning on the first day after the end of the Initial Contingent PaymentPeriod and ending on December 31, 2014, the amount set forth below opposite the first full calendarmonth that occurs after the end of the Initial Contingent Payment Period, as reduced from time to time, effective upon the consummation of any TYSABRI Transaction in a Major Market Country with aThird Party Transferee pursuant to Section 4.9(c)(ii)(B ) ; and 29March 2014 $ 1,666,666,666.67 April 2014 $ 1,500,000,000.00 May 2014 $ 1,333,333,333.33 June 2014 $ 1,166,666,666.67 July 2014 $ 1,000,000,000.00 August 2014 $ 833,333,333.33 September 2014 $ 666,666,666.67 October 2014 $ 500,000,000.00 November 2014 $ 333,333,333.33 December 2014 $ 166,666,666.67 ( ii)with respect to calendar year 2015 and each calendar year thereafter during the Term, two billiondollars ( $ 2,000,000,000 ), as reduced from time to time, effective upon the consummation of anyTYSABRI Transaction in a Major Market Country with a Third Party Transferee pursuant toSection 4.9(c)(ii)(B )