t102-2. notebook February 28, 2011 2 28-14:08 2 28-14:18 r ——^4— a. 2 28-14:34 2 28-14:39 1 t102-2. notebook February 28, 2011 x = iL % v 2 28-14:47 2 28-15:18 - fr* 2 28-15:25 2 28-15:33 2 28-15:39 2 28-15:46 2