| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb base] n't we [vb infin] | 177 |
|
| 2 | [vb base] n't we [adv] [vb infin] | 32 |
|
| 3 | why [vb base] n't we [adv] | 30 |
|
| 4 | why [vb base] we [adv] [vb infin] | 25 |
|
