| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did [pron] [verb] | 16806 |
|
| 2 | why [pron] [verb] | 5794 |
|
| 3 | why did [pron] | 1349 |
|
| 4 | why did [verb] | 7 |
|
