| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't know [prep] | 792 |
|
| 2 | n't know [prep] | 792 |
|
| 3 | n't [verb] till | 111 |
|
| 4 | [adv] know till | 7 |
|
| 5 | n't know till | 5 |
|
| 6 | [not/n't] know till | 5 |
|
| 7 | not know till | 5 |
|
