| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do not know for [adj] | 46 |
|
| 2 | do not know for [adj] | 45 |
|
| 3 | do not [verb] for certain | 12 |
|
| 4 | do not know for certain | 11 |
|
| 5 | [verb] not know for certain | 11 |
|
| 6 | do [adv] know for certain | 11 |
|
| 7 | do not know [prep] certain | 11 |
|
| 8 | do not know [prep] certain | 11 |
|
| 9 | do not know for certain | 11 |
|
