| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [not/n't] [verb] for | 1081 |
|
| 2 | [not/n't] [verb] for certain | 30 |
|
| 3 | [vb mod] [verb] for certain | 13 |
|
| 4 | [vb mod] [not/n't] [verb] certain | 6 |
|
