| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] [verb] [pron] | 549 |
|
| 2 | [modal v] [not/n't] [verb] [verb] i | 154 |
|
| 3 | [vb mod] [not/n't] [verb] [verb] i | 154 |
|
| 4 | could [adv] [verb] [verb] i | 39 |
|
| 5 | could [not/n't] [verb] [verb] i | 27 |
|
