| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it could be [verb] [that] | 368 |
|
| 2 | it could [not/n't] be [verb] | 177 |
|
| 3 | could [not/n't] be [verb] [that] | 25 |
|
| 4 | it [not/n't] be [verb] [that] | 7 |
|
