| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] may [not/n't] [vb infin] | 1046 |
|
| 2 | [Wh det] [modal v] [not/n't] [vb infin] | 547 |
|
| 3 | [Wh det] may [adv] [vb infin] | 286 |
|
| 4 | [Wh det] may [not/n't] [verb] | 51 |
|
