| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] n't possibly have be | 10 |
|
| 2 | [modal v] n't possibly have be | 10 |
|
| 3 | could n't possibly have be | 9 |
|
| 4 | could n't possibly have be | 9 |
|
