| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [pron] [adv] [verb] | 2901 |
|
| 2 | why [modal v] [pron] [verb] | 993 |
|
| 3 | why [pron] [adv] [verb] | 239 |
|
| 4 | why [modal v] [pron] [adv] | 44 |
|
