| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [not/n't] say [prep] certain | 8 |
|
| 2 | [vb mod] [not/n't] say for certain | 8 |
|
| 3 | could [not/n't] say [prep] certain | 5 |
|
| 4 | [vb mod] n't say [prep] certain | 5 |
|
