| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | then why [not/n't] [verb] [pron] | 9 |
|
| 2 | then why [not/n't] [verb] [pers pn] | 6 |
|
| 3 | then why [not/n't] [verb] [adj] | 6 |
|
| 4 | then why [not/n't] [verb] [prep] | 5 |
|
| 5 | then why [not/n't] [verb] [prep] | 5 |
|
