B4 | C41 | C42 | C43 | C44 |
C41 | 1 | 1/7 | 1/3 | 1/5 |
C42 | 7 | 1 | 5 | 3 |
C43 | 3 | 1/5 | 1 | 1/3 |
C44 | 5 | 1/3 | 3 | 1 |