23 1BGZ-2D 1 g 0 2 23 1 2 G 1 3 22 2 3 G 2 4 21 3 4 A 3 5 20 4 5 U 4 6 0 5 6 A 5 7 0 6 7 C 6 8 19 7 8 U 7 9 18 8 9 G 8 10 16 9 10 C 9 11 15 10 11 U 10 12 0 11 12 U 11 13 0 12 13 C 12 14 0 13 14 G 13 15 0 14 15 G 14 16 10 15 16 U 15 17 9 16 17 A 16 18 0 17 18 A 17 19 8 18 19 G 18 20 7 19 20 U 19 21 4 20 21 C 20 22 3 21 22 C 21 23 2 22 23 C 22 0 1 23