| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not [verb] [pron] [prep] | 2730 |
|
| 2 | [modal v] not [verb] [pron] [prep] | 2730 |
|
| 3 | could [adv] [verb] [pron] [prep] | 829 |
|
| 4 | could not [verb] [pron] [prep] | 549 |
|
