| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] may have [verb] | 162 |
|
| 2 | [Wh det] [modal v] have occur | 21 |
|
| 3 | [Wh det] [vb mod] have occur | 21 |
|
| 4 | [pron] may have occur | 11 |
|
| 5 | [Wh det] may have occur | 9 |
|
| 6 | [Wh det] may [verb] occur | 9 |
|
