| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] not be [verb] | 17406 |
|
| 2 | [vb mod] not be [verb] | 17406 |
|
| 3 | could [adv] be [verb] | 4880 |
|
| 4 | could not [be] [verb] | 2289 |
|
| 5 | could not be [verb] | 2289 |
|
