| A | B1 | B2 | B3 | B4 | W |
| B1 | 1 | 1 | 2 | 2 | 0.3333 |
| B2 | 1 | 1 | 2 | 2 | 0.3333 |
| B3 | 1/2 | 1/2 | 1 | 1 | 0.1667 |
| B4 | 1/2 | 1/2 | 1 | 1 | 0.1667 |