| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | n't [verb] [is] | 273 |
|
| 2 | [adv] know [is] | 95 |
|
| 3 | n't know [be] | 72 |
|
| 4 | [not/n't] know [is] | 47 |
|
| 5 | not know [is] | 47 |
|
