| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [adv] | 3296 |
|
| 2 | [vb mod] no [adv] | 1757 |
|
| 3 | [modal v] no [adv] | 1757 |
|
| 4 | could no [adv] | 530 |
|
