| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] [verb] [adv] | 922 |
|
| 2 | [not/n't] [verb] so [adv] | 394 |
|
| 3 | could [not/n't] [verb] so | 62 |
|
| 4 | could [verb] so [adv] | 53 |
|
