| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [verb] for certain [conj] | 10 |
|
| 2 | [not/n't] [verb] for certain [pron] | 7 |
|
| 3 | [not/n't] [verb] for certain what | 6 |
|
| 4 | [not/n't] [verb] for certain [Wh det] | 6 |
|
| 5 | [not/n't] [verb] for certain what | 6 |
|
| 6 | [not/n't] [verb] for certain [subord] | 5 |
|
| 7 | do [not/n't] [verb] for certain | 12 |
|
| 8 | [verb] [not/n't] [verb] for certain | 12 |
|
| 9 | [modal v] [not/n't] [verb] for certain | 11 |
|
| 10 | [vb mod] [not/n't] [verb] for certain | 11 |
|
| 11 | [vb base] [not/n't] [verb] for certain | 10 |
|
| 12 | do [not/n't] [verb] for certain | 10 |
|
| 13 | be [not/n't] [verb] for certain | 7 |
|
| 14 | [be] [not/n't] [verb] for certain | 7 |
|
| 15 | [is] [not/n't] [verb] for certain | 6 |
|
| 16 | can [not/n't] [verb] for certain | 6 |
|
| 17 | is [not/n't] [verb] for certain | 6 |
|
| 18 | could [not/n't] [verb] for certain | 5 |
|
| 19 | could [not/n't] [verb] for certain | 5 |
|
