| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb past] | 154724 |
|
| 2 | why [verb] | 8829 |
|
| 3 | [Wh adv] [vb past] | 7024 |
|
| 4 | why [vb past] | 2941 |
|
