| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] [pron] [vb infin] [det] | 312 |
|
| 2 | why [verb] [pron] [vb infin] to | 109 |
|
| 3 | [verb] [pron] [vb infin] [det] to | 40 |
|
