| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have been [verb] for | 1683 |
|
| 2 | [pron] could have been [verb] | 405 |
|
| 3 | could have been [verb] for | 69 |
|
| 4 | [pron] could have [verb] for | 60 |
|
