| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so why do [adv] we | 16 |
|
| 2 | so why do [not/n't] we | 16 |
|
| 3 | so why do n't we | 16 |
|
| 4 | so why do not we | 16 |
|
| 5 | so why do we [vb infin] | 9 |
|
| 6 | so why do we [verb] | 9 |
|
