| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [adv] did | 277 |
|
| 2 | [adv] why did | 268 |
|
| 3 | [Wh adv] why [verb] | 31 |
|
| 4 | [Wh adv] why do | 30 |
|
| 5 | [Wh adv] why [vb past] | 11 |
|
