| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could [adv] be [conj] | 56 |
|
| 2 | it [modal v] [not/n't] be [conj] | 50 |
|
| 3 | it [vb mod] [not/n't] be [conj] | 50 |
|
| 4 | [pron] could [not/n't] be [conj] | 12 |
|
| 5 | it could [not/n't] be [conj] | 8 |
|
| 6 | it could [not/n't] [be] [conj] | 8 |
|
| 7 | it could [not/n't] [be] [conj] | 8 |
|
| 8 | it could [not/n't] be [conj] | 8 |
|
