| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [verb] [art] [noun] | 5237 |
|
| 2 | could [verb] [verb] [art] [noun] | 838 |
|
| 3 | could [vb infin] [verb] [art] [noun] | 836 |
|
| 4 | could have [verb] [art] [noun] | 576 |
|
