| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could not go [adv] | 214 |
|
| 2 | could not go [adv] | 74 |
|
| 3 | [modal v] not go ahead | 41 |
|
| 4 | [vb mod] not go ahead | 41 |
|
| 5 | could [adv] go ahead | 14 |
|
| 6 | could not [verb] ahead | 12 |
|
| 7 | could not go ahead | 8 |
|
| 8 | could not go ahead | 8 |
|
