| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] we | 243 |
|
| 2 | [conj] why do [not/n't] | 98 |
|
| 3 | [conj] why do we | 19 |
|
| 4 | [conj] do [not/n't] we | 18 |
|
