| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | he [verb] n't know that | 16 |
|
| 2 | he do n't know that | 16 |
|
| 3 | he [vb past] n't know that | 8 |
|
| 4 | he did n't know that | 8 |
|
