| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | may [not/n't] [be] [vb pp] | 506 |
|
| 2 | [not/n't] [be] [vb pp] on | 440 |
|
| 3 | may [be] [vb pp] on | 347 |
|
| 4 | may [not/n't] [be] on | 5 |
|
