| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [not/n't] go [adv] | 214 |
|
| 2 | could [not/n't] go [adv] | 74 |
|
| 3 | [modal v] [not/n't] go ahead | 41 |
|
| 4 | could [adv] go ahead | 14 |
|
| 5 | could [not/n't] [verb] ahead | 12 |
|
| 6 | could [not/n't] go ahead | 8 |
|
