| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] may not be [vb pp] | 18 |
|
| 2 | [Wh det] may [not/n't] be [vb pp] | 18 |
|
| 3 | which may [not/n't] be [vb pp] | 16 |
|
