| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] know for [adj] | 45 |
|
| 2 | do [not/n't] know for [adj] | 44 |
|
| 3 | do [not/n't] [vb infin] for certain | 12 |
|
| 4 | do [not/n't] [verb] for certain | 12 |
|
| 5 | [verb] [not/n't] know for certain | 11 |
|
| 6 | do [not/n't] know for certain | 11 |
|
| 7 | do [not/n't] know [prep] certain | 11 |
|
| 8 | do [not/n't] know for certain | 11 |
|
| 9 | do [not/n't] know for certain | 11 |
|
| 10 | do [not/n't] know [prep] certain | 11 |
|
| 11 | do [adv] know for certain | 11 |
|
