| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] [pron] not [verb] | 164 |
|
| 2 | why [verb] [pron] [adv] [verb] | 159 |
|
| 3 | [verb] [pron] not [adv] [verb] | 95 |
|
| 4 | why [verb] [pron] not [adv] | 6 |
|
