| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [adv] [pron] [verb] | 1970 |
|
| 2 | do [adv] [pron] [verb] [subord] | 31 |
|
| 3 | why do [pron] [verb] [subord] | 18 |
|
