| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] impossible [verb] | 1046 |
|
| 2 | it [be] [verb] [det] | 776 |
|
| 3 | [be] impossible [verb] [det] | 112 |
|
| 4 | it impossible [verb] [det] | 20 |
|
