| B21 | B22 | B23 | B24 |
B21 | 1 | 2 | 1 | 2/5 |
B22 | 1/2 | 1 | 1/3 | 1/2 |
B23 | 1 | 3 | 1 | 1/2 |
B24 | 5/2 | 2 | 2 | 1 |