| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] [adv] [pron] [verb] | 111 |
|
| 2 | could [not/n't] [verb] [adv] [pers pn] [verb] | 103 |
|
| 3 | [modal v] [not/n't] [verb] [adv] i [verb] | 76 |
|
| 4 | [vb mod] [not/n't] [verb] [adv] i [verb] | 76 |
|
| 5 | could [adv] [verb] [adv] i [verb] | 24 |
|
| 6 | could [not/n't] [verb] [adv] i [verb] | 20 |
|
| 7 | could [not/n't] [verb] [adv] i [verb] | 20 |
|
