| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] we | 243 |
|
| 2 | why do n't we | 242 |
|
| 3 | why do [not/n't] we | 230 |
|
| 4 | why did [not/n't] we | 13 |
|
