| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] be impossible for us | 11 |
|
| 2 | it be impossible for us | 11 |
|
| 3 | [pron] be impossible for us | 11 |
|
| 4 | it be impossible for us | 11 |
|
| 5 | be impossible for us [verb] | 12 |
|
| 6 | be impossible for us [to-vb] | 12 |
|
