| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do not know for | 15 |
|
| 2 | [verb] not know for | 14 |
|
| 3 | [vb base] not know for | 10 |
|
| 4 | do not know for | 9 |
|
| 5 | did not know for | 5 |
|
| 6 | [vb past] not know for | 5 |
|
