| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] [pron] [verb] | 1970 |
|
| 2 | [vb base] why do [not/n't] [pron] | 16 |
|
| 3 | [vb base] why do [pron] [verb] | 13 |
|
| 4 | [vb base] do [not/n't] [pron] [verb] | 13 |
|
