| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [pron] could have | 9 |
|
| 2 | [modal v] [pers pn] could have | 9 |
|
| 3 | [modal v] [pron] could have | 9 |
|
| 4 | [modal v] [pron] could have | 9 |
|
| 5 | could [pron] could have | 8 |
|
| 6 | 8 |
|
