| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [not/n't] know | 23580 |
|
| 2 | [prep] [verb] [not/n't] | 353 |
|
| 3 | [prep] [verb] know | 107 |
|
| 4 | [prep] [not/n't] know | 79 |
|
