| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know for [adj] | 52 |
|
| 2 | [not/n't] know for [adj] | 50 |
|
| 3 | n't know for [adj] | 39 |
|
| 4 | [not/n't] know for sure | 36 |
|
| 5 | [not/n't] know for sure | 36 |
|
| 6 | [not/n't] know for certain | 13 |
|
| 7 | [not/n't] know for certain | 13 |
|
| 8 | not know for [adj] | 13 |
|
