| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could [pron] [modal v] have | 10 |
|
| 2 | [pron] could [pron] [modal v] have | 10 |
|
| 3 | you could [pron] [modal v] have | 5 |
|
| 4 | you could [pron] [modal v] have | 5 |
|
| 5 | could [vb infin] [pron] [modal v] have | 19 |
|
| 6 | could [verb] [pron] [modal v] have | 19 |
|
| 7 | could have [pron] [modal v] have | 7 |
|
| 8 | could have [pron] [modal v] have | 7 |
|
