| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [to-vb] [adj] [prep] | 46 |
|
| 2 | it impossible [to-vb] [adj] | 45 |
|
| 3 | it impossible [to-vb] [prep] | 38 |
|
| 4 | impossible [to-vb] [adj] [prep] | 17 |
|
