| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did [adv] [pron] [verb] | 1597 |
|
| 2 | why did [pron] [verb] | 1161 |
|
| 3 | why did [adv] [pron] | 681 |
|
| 4 | why [adv] [pron] [verb] | 32 |
|
