| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] have been [verb] for | 1683 |
|
| 2 | [pron] must have been [verb] | 371 |
|
| 3 | must have been [verb] for | 36 |
|
| 4 | [pron] must have [verb] for | 24 |
|
| 5 | [pron] must have been for | 8 |
|
