| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be impossible [prep] [noun pl] [to-vb] | 6 |
|
| 2 | it be impossible for [noun pl] [to-vb] | 5 |
|
| 3 | it be impossible for [noun pl] [to-vb] | 5 |
|
