| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have [vb pp] | 38037 |
|
| 2 | [vb mod] have [vb pp] | 38037 |
|
| 3 | could [vb infin] [vb pp] | 5483 |
|
| 4 | could [verb] [vb pp] | 5483 |
|
| 5 | could have [vb pp] | 5343 |
|
| 6 | could have [verb] | 5175 |
|
| 7 | could have [vb pp] | 5143 |
|
