| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [be] [verb] | 12232 |
|
| 2 | [modal v] [be] [verb] [subord] | 6287 |
|
| 3 | it [modal v] [verb] [subord] | 308 |
|
| 4 | it [modal v] [be] [subord] | 278 |
|
| 5 | it [be] [verb] [subord] | 14 |
|
