| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [pers pn] [adv] | 266 |
|
| 2 | why do [pers pn] [not/n't] | 133 |
|
| 3 | do [pers pn] [not/n't] [adv] | 35 |
|
