| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it may not [be] | 389 |
|
| 2 | it may [be] [prep] | 234 |
|
| 3 | it not [be] [prep] | 145 |
|
| 4 | may not [be] [prep] | 127 |
|
