| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] did not know [adv] | 14 |
|
| 2 | [adv] [vb past] not know [Wh adv] | 11 |
|
| 3 | [adv] [vb past] not know how | 10 |
|
| 4 | [adv] [vb past] not know how | 10 |
|
