| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have [verb] [pers pn] | 584 |
|
| 2 | [vb infin] [pron] could [verb] [pers pn] | 97 |
|
| 3 | [vb infin] [pron] could have [verb] | 48 |
|
