| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [adj] for [pers pn] | 922 |
|
| 2 | it be impossible for [pron] | 76 |
|
| 3 | it be impossible [prep] [pers pn] | 62 |
|
| 4 | it [be] impossible for [pers pn] | 60 |
|
| 5 | [pron] be impossible for [pers pn] | 60 |
|
