| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] [pron] [verb] | 1970 |
|
| 2 | then why do [pron] [verb] | 70 |
|
| 3 | then why do [not/n't] [pron] | 49 |
|
| 4 | then do [not/n't] [pron] [verb] | 5 |
|
