| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could n't [adv] [verb] | 846 |
|
| 2 | could [adv] [verb] to | 714 |
|
| 3 | n't [adv] [verb] to | 388 |
|
| 4 | could n't [verb] to | 192 |
|
