| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [adv] [verb] [pers pn] could [verb] | 9 |
|
| 2 | [not/n't] [adv] [verb] [pron] could [vb infin] | 9 |
|
| 3 | n't [adv] [verb] [pron] could [verb] | 7 |
|
| 4 | [not/n't] [adv] [vb infin] [pron] could [verb] | 7 |
|
