| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] have [vb pp] [pers pn] for | 5 |
|
| 2 | could [adv] have [vb pp] [pron] for | 5 |
|
| 3 | could [adv] have [vb pp] [pron] for | 5 |
|
