1, 5 2 a b 0 0 1 0 1;
2, 9 2 b b 0 1 0 0 1;
3, 10 2 b c 0 1 0 1 0;
4, 18 2 c c 1 0 0 1 0;
5, 20 2 c a 1 0 1 0 0;
