| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [adv] [verb] [pron] [verb] | 74 |
|
| 2 | [adv] not [verb] [pron] [verb] | 56 |
|
| 3 | why [not/n't] [verb] [pron] [verb] | 18 |
|
| 4 | why not [verb] [pron] [verb] | 18 |
|
