| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have be [adj] for | 5 |
|
| 2 | could [adv] have be [adj] for | 7 |
|
| 3 | could not have be [adj] for | 6 |
|
| 4 | could [not/n't] have be [adj] for | 6 |
|
