| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't [verb] at | 1217 |
|
| 2 | n't know [prep] | 792 |
|
| 3 | n't know [prep] | 792 |
|
| 4 | [adv] know at | 115 |
|
| 5 | not know at | 80 |
|
| 6 | [not/n't] know at | 80 |
|
| 7 | n't know at | 42 |
|
