| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [vb infin] [verb] | 8124 |
|
| 2 | may [vb infin] [vb pp] | 4267 |
|
| 3 | [modal v] [vb infin] occurred | 149 |
|
| 4 | may [vb infin] occur | 39 |
|
| 5 | may [verb] occurred | 34 |
|
