| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could n't [adv] [verb] | 844 |
|
| 2 | n't [pron] [adv] [verb] | 731 |
|
| 3 | could [pron] [adv] [verb] | 600 |
|
| 4 | could n't [pron] [verb] | 332 |
|
| 5 | could n't [pron] [adv] | 50 |
|
