| B1 | B2 | B3 | B4 |
B1 | 1 | 2/5 | 1/5 | 2/3 |
B2 | 5/2 | 1 | 2/3 | 1/2 |
B3 | 5 | 3/2 | 1 | 4/3 |
B4 | 3/2 | 1 | 3/4 | 1 |