| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [not/n't] [adv] know | 1606 |
|
| 2 | [not/n't] [adv] for | 1194 |
|
| 3 | [adv] know for | 533 |
|
| 4 | [not/n't] know for | 113 |
|
