| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] why do | 82 |
|
| 2 | [vb past] [adv] do | 80 |
|
| 3 | [vb past] why [verb] | 50 |
|
| 4 | [vb past] why do | 39 |
|
| 5 | [vb past] [Wh adv] do | 36 |
|
| 6 | [vb past] why [vb base] | 27 |
|
| 7 | [vb past] why do | 24 |
|
