| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it impossible for [pron] [to-vb] | 51 |
|
| 2 | it was impossible for [pron] | 26 |
|
| 3 | it was for [pron] [to-vb] | 21 |
|
| 4 | was impossible for [pron] [to-vb] | 21 |
|
