| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [not/n't] [be] [prep] | 1149 |
|
| 2 | [modal v] [not/n't] [be] [prep] | 1149 |
|
| 3 | may [adv] [be] [prep] | 339 |
|
| 4 | may [not/n't] [be] [prep] | 127 |
|
