| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] may have been | 698 |
|
| 2 | [noun sg] have been [noun] | 384 |
|
| 3 | may have been [noun] | 110 |
|
| 4 | [noun sg] may have [noun] | 68 |
|
