| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] [pers pn] [verb] | 1951 |
|
| 2 | do [not/n't] [pers pn] [verb] a | 227 |
|
| 3 | why do [pers pn] [verb] a | 59 |
|
