| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could have [verb] [art] [noun] | 559 |
|
| 2 | have [verb] [art] [noun] [to-vb] | 313 |
|
| 3 | could [verb] [art] [noun] [to-vb] | 172 |
|
| 4 | could have [art] [noun] [to-vb] | 10 |
|
| 5 | could have [verb] [noun] [to-vb] | 7 |
|
