| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [pron] not [verb] | 108 |
|
| 2 | could he [adv] [verb] | 64 |
|
| 3 | [vb mod] he not [verb] | 52 |
|
| 4 | [modal v] he not [verb] | 52 |
|
| 5 | could he not [verb] | 13 |
|
