| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it impossible [prep] them [verb] | 15 |
|
| 2 | it [be] [prep] them [verb] | 13 |
|
| 3 | it [be] impossible [prep] them | 12 |
|
| 4 | [be] impossible [prep] them [verb] | 12 |
|
