| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] for [noun] | 1202 |
|
| 2 | may have been [verb] for | 30 |
|
| 3 | may have been [verb] [noun] | 27 |
|
| 4 | may have [verb] for [noun] | 16 |
|
| 5 | may have been for [noun] | 5 |
|
