| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why not [verb] up | 14 |
|
| 2 | why [adv] [verb] up | 14 |
|
| 3 | why [not/n't] [verb] up | 14 |
|
| 4 | why not [verb] up | 14 |
|
| 5 | why [adv] [vb infin] up | 12 |
|
