| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] the | 1847 |
|
| 2 | [not/n't] [verb] on the | 903 |
|
| 3 | could [verb] on the | 180 |
|
| 4 | could [not/n't] [verb] on | 154 |
|
