A, B, C, E, F, G
6
A, C, E, F, G
5
0
C, E, G
3
A, B, C, F
4
A, B, E, F, G
A, B, C, E, G
B, C, E
A, B, F
B, E, F, G
A, B, F, G
B, C, E, G