| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] know for sure | 49 |
|
| 2 | [not/n't] know for sure | 38 |
|
| 3 | not know for sure | 38 |
|
| 4 | not know for [adj] | 23 |
|
| 5 | not know for [adj] | 21 |
|
| 6 | not [verb] for sure | 12 |
|
| 7 | not know [prep] sure | 9 |
|
| 8 | not know for sure | 9 |
|
| 9 | not know for sure | 9 |
|
| 10 | not know [prep] sure | 9 |
|
