| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb base] n't we | 232 |
|
| 2 | [vb base] n't we [vb infin] | 214 |
|
| 3 | why [vb base] we [vb infin] | 168 |
|
| 4 | why [vb base] n't [vb infin] | 13 |
|
