| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] know [prep] | 952 |
|
| 2 | can [not/n't] [prep] | 247 |
|
| 3 | can [not/n't] know | 107 |
|
| 4 | can know [prep] | 10 |
|
