| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it impossible for [pers pn] [verb] | 48 |
|
| 2 | it was impossible for [pers pn] | 22 |
|
| 3 | was impossible for [pers pn] [verb] | 20 |
|
| 4 | it was for [pers pn] [verb] | 19 |
|
