| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we do [not/n't] know | 1242 |
|
| 2 | we do [not/n't] know | 1019 |
|
| 3 | we do n't know | 867 |
|
| 4 | we do not know | 373 |
|
| 5 | we did [not/n't] know | 222 |
|
