| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [modal v] [adv] [noun] | 65 |
|
| 2 | [modal v] [adv] a [noun] | 55 |
|
| 3 | why [modal v] a [noun] | 54 |
|
| 4 | why [adv] a [noun] | 23 |
|
| 5 | why [modal v] [adv] a | 11 |
|
