| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could n't [pron] | 865 |
|
| 2 | could n't [pers pn] | 847 |
|
| 3 | [modal v] n't he | 425 |
|
| 4 | could [adv] he | 98 |
|
| 5 | could not he | 96 |
|
| 6 | could [not/n't] he | 96 |
|
| 7 | could n't he | 93 |
|
