| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [not/n't] have be [vb pp] for | 11 |
|
| 2 | [vb mod] [not/n't] have be [vb pp] for | 11 |
|
| 3 | [modal v] [not/n't] have been [vb pp] for | 11 |
|
| 4 | [modal v] not have be [vb pp] for | 10 |
|
| 5 | could [not/n't] have be [vb pp] for | 6 |
|
| 6 | could [not/n't] have be [vb pp] for | 6 |
|
