| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] do [not/n't] know | 19937 |
|
| 2 | they do [not/n't] [verb] | 9335 |
|
| 3 | they [verb] [not/n't] know | 747 |
|
| 4 | they do [adv] know | 732 |
|
