| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [not/n't] [verb] [been] | 2119 |
|
| 2 | [modal v] [not/n't] [verb] [been] | 2119 |
|
| 3 | may [adv] [verb] [been] | 768 |
|
| 4 | may [not/n't] [verb] [be] | 256 |
|
| 5 | may [not/n't] [verb] [been] | 248 |
|
