| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] if not impossible [verb] | 16 |
|
| 2 | [adj] if not impossible [verb] | 16 |
|
| 3 | difficult if not impossible [verb] | 14 |
|
| 4 | difficult if not impossible [verb] | 14 |
|
| 5 | if not impossible [verb] [prep] | 7 |
|
| 6 | if not impossible [verb] [prep] | 7 |
|
