| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] [not/n't] [pers pn] [vb infin] | 599 |
|
| 2 | then why [vb past] [pers pn] [vb infin] | 39 |
|
| 3 | then why [vb past] [not/n't] [pers pn] | 20 |
|
