| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [verb] [noun] | 310 |
|
| 2 | [modal v] have have [noun] | 201 |
|
| 3 | [vb mod] have have [noun] | 201 |
|
| 4 | could [verb] have [noun] | 24 |
|
| 5 | could have have [noun] | 18 |
|
