| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] [adv] [pron] [vb infin] | 1965 |
|
| 2 | then why [verb] [pron] [vb infin] | 70 |
|
| 3 | then why [verb] [adv] [pron] | 53 |
|
| 4 | then [verb] [adv] [pron] [vb infin] | 5 |
|
