| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] is impossible [prep] them [verb] | 5 |
|
| 2 | [pron] is impossible [prep] them [verb] | 5 |
|
| 3 | it is impossible [prep] them [verb] | 5 |
|
| 4 | it is impossible [prep] them [verb] | 5 |
|
