| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] [pron] [prep] | 5 |
|
| 2 | why [verb] [not/n't] [pron] [prep] | 5 |
|
| 3 | why [verb] n't [pron] [prep] | 5 |
|
