| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb mod] [pron] | 1703 |
|
| 2 | [adv] [vb mod] [ex0] | 96 |
|
| 3 | [Wh adv] [vb mod] [ex0] | 55 |
|
| 4 | why [vb mod] [ex0] | 29 |
|
| 5 | why [modal v] [ex0] | 29 |
|
