r15 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 |
n15 | 1 | 2 | 3 | 4 - 5 | 6 | 7 | 8 - 9 | 10 | 11 | 12 - 13 | 14 | 15 | 16 |