| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [modal v] [adv] | 1032 |
|
| 2 | [modal v] [adv] [noun] | 813 |
|
| 3 | why [modal v] [noun] | 190 |
|
| 4 | why [adv] [noun] | 100 |
|
