| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] [pers pn] do | 183 |
|
| 2 | why [verb] [pers pn] [not/n't] | 173 |
|
| 3 | [verb] [pers pn] [not/n't] do | 63 |
|
