| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] [pers pn] could [vb infin] | 283 |
|
| 2 | [not/n't] [vb pp] [pers pn] [modal v] [vb infin] | 37 |
|
| 3 | [adv] [vb pp] [pers pn] could [vb infin] | 30 |
|
| 4 | [not/n't] [vb pp] [pron] could [vb infin] | 8 |
|
| 5 | [not/n't] [vb pp] [pers pn] could [verb] | 5 |
|
