| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [pers pn] could have | 487 |
|
| 2 | [verb] [verb] [pers pn] could | 253 |
|
| 3 | [verb] [verb] [pers pn] have | 89 |
|
| 4 | [verb] [verb] could have | 8 |
|
