| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] not know the [noun] | 201 |
|
| 2 | not know at the [noun] | 30 |
|
| 3 | [vb past] not know at the | 13 |
|
| 4 | [vb past] not at the [noun] | 10 |
|
