| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] know | 17185 |
|
| 2 | do [not/n't] [be] | 1836 |
|
| 3 | [not/n't] know [be] | 102 |
|
| 4 | do know [be] | 54 |
|
