C = B, E, F, G, H, I
S = A, B, E, F, G, H, I
R = B, E, F, G, H, I
P = A, B, C, E, F, H, I
6
7
C = C, D, I
S = A, C, D, I
R = A, C, D, I
P = C, D, G, I
3
4
C = A, B, C, D, E, F, G, H, I
S = A, B, C, D, E, F, G, H, I
R = A, B, C, D, E, F, G, H, I
P = A, B, C, D, E, F, G, H, I
9
C = A, C, E, F, G, H
S = A, C, E, G, H
R = A, C, E, F, G, H
P = A, E, F, G, H
5
C = A, B, D
S = B, D, F
R = B, D
P = B, D
2
S = B, C, D, E, F, G, H, I
8