| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] not know that | 201 |
|
| 2 | did not know that | 178 |
|
| 3 | [vb past] not know that | 178 |
|
| 4 | [vb past] n't know that | 110 |
|
| 5 | [vb past] not know that | 91 |
|
| 6 | had not know that | 22 |
|
| 7 | [vb past] not known that | 22 |
|
