| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] impossible [to-vb] [prep] | 115 |
|
| 2 | but it [be] impossible [to-vb] | 46 |
|
| 3 | but it [be] impossible [prep] | 10 |
|
| 4 | but it [be] [to-vb] [prep] | 6 |
|
