| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have [verb] a [noun] | 185 |
|
| 2 | may have [vb pp] a [noun] | 157 |
|
| 3 | may have seen [art] [noun] | 34 |
|
| 4 | [modal v] have seen a [noun] | 18 |
|
| 5 | may have seen a [noun] | 6 |
|
| 6 | may [verb] seen a [noun] | 6 |
|
| 7 | may [vb infin] seen a [noun] | 6 |
|
| 8 | may have see a [noun] | 6 |
|
