| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb mod] [adv] [noun] [noun] | 6 |
|
| 2 | why [modal v] [adv] [noun] [noun] | 6 |
|
| 3 | why [modal v] [not/n't] [noun] [noun] | 6 |
|
| 4 | why [modal v] not [noun] [noun] | 6 |
|
| 5 | why [modal v] n't [noun] [noun] | 5 |
|
