| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could not [verb] | 4952 |
|
| 2 | [pron] could be [verb] | 4029 |
|
| 3 | could not be [verb] | 1911 |
|
| 4 | [pron] could not be | 711 |
|
| 5 | [pron] not be [verb] | 67 |
|
