| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] know | 23243 |
|
| 2 | do [not/n't] [adv] | 12928 |
|
| 3 | [not/n't] [adv] know | 1604 |
|
| 4 | do [adv] know | 16 |
|
