| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did n't know [adv] [prep] | 22 |
|
| 2 | [vb past] n't know [adv] [prep] | 22 |
|
| 3 | [vb past] n't know [Wh adv] [prep] | 13 |
|
| 4 | [vb past] n't know [adv] to | 12 |
|
| 5 | [vb past] n't know how [prep] | 11 |
|
| 6 | [vb past] n't know how [prep] | 11 |
|
| 7 | [vb past] n't know [adv] [prep] | 10 |
|
| 8 | [vb past] n't know [adv] about | 7 |
|
| 9 | [vb past] n't know enough [prep] | 5 |
|
| 10 | [vb past] n't know enough [prep] | 5 |
|
