| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did [adv] know for | 13 |
|
| 2 | did not know for | 13 |
|
| 3 | did [not/n't] know for | 13 |
|
| 4 | did n't know for | 8 |
|
| 5 | did not know for | 5 |
|
