| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not [adv] | 5439 |
|
| 2 | [modal v] not [adv] | 5439 |
|
| 3 | could [adv] [adv] | 3296 |
|
| 4 | could not [adv] | 1875 |
|
| 5 | could [not/n't] [adv] | 1875 |
|
| 6 | could not [adv] | 861 |
|
