| R1 | R2 | R3 | R4 | R5 | R6 | R7 | R8 |
R6 | 3 | 3 | 4 | 4 | 3 | / | / | / |
R7 | 0 | 0 | 0 | 0 | 0 | 1 | / | / |
R8 | 0 | 0 | 0 | 0 | 0 | 1 | 7 | / |