| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] did [not/n't] know | 4060 |
|
| 2 | [Wh pn] did [not/n't] [verb] | 920 |
|
| 3 | [Wh pn] [verb] [not/n't] know | 248 |
|
| 4 | [Wh pn] do [not/n't] know | 245 |
|
| 5 | [Wh pn] [vb past] [not/n't] know | 95 |
|
| 6 | [Wh pn] did [adv] know | 93 |
|
