1 g 17 2 C 16 3 A 15 4 G 14 5 A 13 6 C 0 7 U 0 8 U 0 9 U 0 10 U 0 11 a 0 12 A 0 13 U 5 14 C 4 15 U 3 16 G 2 17 C 1