| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] [modal v] | 76 |
|
| 2 | [verb] [verb] could | 65 |
|
| 3 | have [verb] could | 35 |
|
| 4 | [vb infin] [verb] could | 7 |
|
