| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know [prep] | 952 |
|
| 2 | [not/n't] really know | 366 |
|
| 3 | [not/n't] really [prep] | 152 |
|
| 4 | really know [prep] | 17 |
|
