| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [noun] [verb] | 508 |
|
| 2 | have [verb] [noun] [verb] | 355 |
|
| 3 | could have [verb] [noun] | 298 |
|
| 4 | could have [verb] [verb] | 127 |
|
| 5 | could have [noun] [verb] | 15 |
|
