| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] n't [adj] | 303 |
|
| 2 | [modal v] n't [adj] | 303 |
|
| 3 | could [adv] [adj] | 111 |
|
| 4 | could not [adj] | 58 |
|
| 5 | could [not/n't] [adj] | 58 |
|
| 6 | could n't [adj] | 35 |
|
