| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [be] [verb] | 2289 |
|
| 2 | [modal v] not [be] say | 242 |
|
| 3 | [vb mod] not [be] say | 242 |
|
| 4 | could [adv] [be] say | 119 |
|
| 5 | could not [be] say | 64 |
|
