18 1
1 G -1 1
1 C 0 2
1 G 1 3
1 T 2 4
1 T 3 5
1 G 4 6
1 C 5 7
1 T 6 8
1 T 7 9
1 C 8 10
1 T 9 11
1 C 10 12
1 C 11 13
1 A 12 14
1 A 13 15
1 C 14 16
1 G 15 17
1 C 16 -1