| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] not [pers pn] | 2478 |
|
| 2 | [adv] [vb -s] not [pers pn] | 374 |
|
| 3 | why [vb -s] not [pron] | 135 |
|
| 4 | why [vb -s] [adv] [pers pn] | 112 |
|
