| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [verb] [noun] | 527 |
|
| 2 | [modal v] [verb] have [noun] | 303 |
|
| 3 | [vb mod] [verb] have [noun] | 303 |
|
| 4 | could [verb] have [noun] | 24 |
|
