| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] n't [pron] | 6967 |
|
| 2 | [modal v] n't [pron] | 6967 |
|
| 3 | could [adv] [pron] | 919 |
|
| 4 | could [not/n't] [pron] | 886 |
|
| 5 | could not [pron] | 885 |
|
| 6 | could n't [pron] | 865 |
|
