| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [subord] it [modal v] [be] | 284 |
|
| 2 | [adv] it [modal v] [be] [noun] | 97 |
|
| 3 | [subord] it [modal v] [be] [noun] | 45 |
|
