| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [verb] | 52212 |
|
| 2 | why [pron] [verb] | 5794 |
|
| 3 | [prep] why [pron] | 440 |
|
| 4 | [prep] why [verb] | 23 |
|
