| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [unc] [pron] [verb] [adv] know | 334 |
|
| 2 | [unc] [pron] [verb] [not/n't] know | 334 |
|
| 3 | [unc] [pron] [verb] not know | 334 |
|
| 4 | [unc] [pron] [verb] n't know | 331 |
|
