| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] [pron] [verb] [art] | 757 |
|
| 2 | could [verb] [pron] [verb] [art] | 141 |
|
| 3 | could have [verb] [pron] [verb] | 88 |
|
| 4 | could have [verb] [pron] [art] | 61 |
|
| 5 | could have [verb] [verb] [art] | 26 |
|
