路径编号 | 符号表示 | 经过的路段 |
1 |
| 1-3-5-9-13-15 |
2 |
| 1-4-6-9-13-15 |
3 |
| 1-4-8-10-13-15 |
4 |
| 1-4-8-12-14-15 |
5 |
| 2-5-9-13-15 |
6 |
| 7-9-13-15 |
7 |
| 11-13-15 |