| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't [verb] [det] | 15243 |
|
| 2 | could n't [verb] | 12359 |
|
| 3 | could [verb] [det] | 3315 |
|
| 4 | could n't [det] | 24 |
|
