| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] [pron] | 2359 |
|
| 2 | [adv] do [not/n't] [indef pn] | 28 |
|
| 3 | why [verb] [not/n't] [indef pn] | 26 |
|
| 4 | why do [adv] [indef pn] | 21 |
|
