r2 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
n2 | 1 - 2 | 3 - 5 | 6 - 7 | 8 - 10 | 11 - 12 | 13 - 15 | 16 - 17 | 18 - 20 | 21 - 22 | 23 - 24 |