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