| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] [modal v] [pron] could have | 8 |
|
| 2 | [pron] [modal v] [pron] could have | 8 |
|
| 3 | [modal v] [verb] [pron] could have | 11 |
|
| 4 | [modal v] [vb infin] [pron] could have | 11 |
|
| 5 | [modal v] have [pron] could have | 6 |
|
| 6 | [modal v] have [pron] could have | 6 |
|
