| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [adv] have [be] | 769 |
|
| 2 | [modal v] only have [be] | 120 |
|
| 3 | may only [verb] [be] | 5 |
|
| 4 | may only [vb infin] [be] | 5 |
|
| 5 | may only have [be] | 5 |
|
