| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] know [Wh det] | 3988 |
|
| 2 | do [not/n't] know i | 330 |
|
| 3 | [not/n't] know [Wh det] i | 251 |
|
| 4 | do know [Wh det] i | 8 |
|
