| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't [verb] about | 1970 |
|
| 2 | [adv] know about | 864 |
|
| 3 | n't know [prep] | 792 |
|
| 4 | n't know [prep] | 792 |
|
| 5 | [not/n't] know about | 626 |
|
| 6 | not know about | 624 |
|
| 7 | n't know about | 543 |
|
