| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [not/n't] [be] | 4548 |
|
| 2 | it [modal v] [be] [subord] | 278 |
|
| 3 | [modal v] [not/n't] [be] [subord] | 81 |
|
| 4 | it [modal v] [not/n't] [subord] | 22 |
|
