| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not [pron] [adv] [verb] | 40 |
|
| 2 | could not [pers pn] [adv] [verb] | 39 |
|
| 3 | [modal v] not they [adv] [verb] | 17 |
|
| 4 | could not they [adv] [verb] | 6 |
|
| 5 | could [adv] they [adv] [verb] | 6 |
|
