| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why not [adv] [verb] | 58 |
|
| 2 | why [not/n't] [adv] [vb base] | 57 |
|
| 3 | why [not/n't] just [verb] | 39 |
|
| 4 | why [not/n't] simply [verb] | 11 |
|
