| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it is [adj] [verb] | 1073 |
|
| 2 | [subord] it is [adj] [verb] | 994 |
|
| 3 | [conj] it is impossible [verb] | 183 |
|
| 4 | [subord] it be impossible [verb] | 95 |
|
| 5 | [subord] it [be] impossible [verb] | 95 |
|
| 6 | [subord] it [is] impossible [verb] | 73 |
|
| 7 | [subord] it is impossible [verb] | 64 |
|
| 8 | [subord] [pron] is impossible [verb] | 64 |
|
