| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [verb] [pron] | 13479 |
|
| 2 | could [verb] [pron] | 12219 |
|
| 3 | could have [verb] | 5175 |
|
| 4 | could have [pron] | 261 |
|
