5
1 c 2
2 c 1
3 c 1
1 m 4
4 m 1
1 m 5
5 m 1
3 m 4
2 c 3
3 c 2
1 c 3
4 c 5
2 m 4
4 m 2
2 m 5
5 m 2
4 m 3
5 c 4
3 m 5
5 m 3
