| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] have been [noun] | 673 |
|
| 2 | may have be [noun] | 110 |
|
| 3 | may have [be] [noun] | 110 |
|
| 4 | may [verb] been [noun] | 110 |
|
| 5 | may have [been] [noun] | 110 |
|
