| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] be impossible for [pron] | 16 |
|
| 2 | it [vb mod] be impossible for [pron] | 16 |
|
| 3 | it would be impossible for [pron] | 12 |
|
| 4 | it [vb mod] be impossible for [pers pn] | 11 |
|
| 5 | it [vb mod] be impossible for [indef pn] | 5 |
|
