| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [verb] [art] [noun] | 559 |
|
| 2 | have [verb] [art] [noun] [vb infin] | 31 |
|
| 3 | could [verb] [art] [noun] [vb infin] | 25 |
|
