1 A B
2 A C
1 B C
3 A B
1 C A
2 C B
1 A B
4 A C
1 B C
2 B A
1 C A
3 B C
1 A B
2 A C
1 B C
5 A B
1 C A
2 C B
1 A B
3 C A
1 B C
2 B A
1 C A
4 C B
1 A B
2 A C
1 B C
3 A B
1 C A
2 C B
1 A B