| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [modal v] [not/n't] [be] [verb] [conj] | 327 |
|
| 2 | it could [adv] [be] [verb] [conj] | 114 |
|
| 3 | [pron] could [not/n't] [be] [verb] [conj] | 73 |
|
| 4 | it could [not/n't] [be] [verb] [conj] | 38 |
|
