| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] n't know [adj] | 706 |
|
| 2 | [verb] n't know about | 512 |
|
| 3 | n't know about [adj] | 148 |
|
| 4 | [verb] know about [adj] | 8 |
|
