| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may have [verb] [art] [noun] | 583 |
|
| 2 | may have [vb pp] [art] [noun] | 500 |
|
| 3 | [modal v] have had [art] [noun] | 459 |
|
| 4 | may have have [art] [noun] | 37 |
|
| 5 | may [verb] had [art] [noun] | 36 |
|
