| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who did not know that | 9 |
|
| 2 | who [vb past] not know that | 9 |
|
| 3 | who [vb past] not know that | 9 |
|
| 4 | who [vb past] not know that | 7 |
|
