| · | a | b | c1 | c2 | v1 | v2 | x1 | x2 | y1 | y2 |
| a | a | 0 | 0 | 0 | a | a | 0 | 0 | a | a |
| b | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | b | b |
| c1 | 0 | 0 | x1 | x1 | x1 | x1 | x1 | x1 | b | b |
| c2 | 0 | 0 | x1 | x1 | x1 | x1 | x1 | x1 | b | b |
| v1 | a | 0 | x1 | x1 | x1 | v1 | x1 | x1 | a | a |
| v2 | a | 0 | x1 | x1 | x1 | v1 | x1 | x1 | a | a |
| x1 | 0 | 0 | x1 | x1 | x1 | x1 | x1 | x1 | 0 | 0 |
| x2 | 0 | 0 | x1 | x1 | x1 | x1 | x1 | x2 | 0 | 0 |
| y1 | a | b | b | b | a | a | 0 | 0 | y1 | y1 |
| y2 | a | b | b | b | a | a | 0 | 0 | y1 | y1 |