| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] [adv] [pron] [vb infin] | 1965 |
|
| 2 | why do [adv] [pron] [vb infin] | 1965 |
|
| 3 | [adv] does [adv] [pron] [vb infin] | 105 |
|
| 4 | why does [adv] [pron] [verb] | 99 |
|
| 5 | why [vb -s] [adv] [pron] [vb infin] | 98 |
|
