| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could have [verb] | 3336 |
|
| 2 | it [pron] have [verb] | 221 |
|
| 3 | it could have [verb] | 170 |
|
| 4 | it [pron] could [verb] | 61 |
|
| 5 | it [pron] could have | 12 |
|
