| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have [vb pp] [adv prt] for | 6 |
|
| 2 | [pers pn] could have [vb pp] [adv prt] for | 6 |
|
| 3 | could have [vb pp] [pron] [adv prt] for | 6 |
|
| 4 | could have [vb pp] [pers pn] [adv prt] for | 6 |
|
