| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [modal v] [adv] [pron] [verb] | 545 |
|
| 2 | [adv] can [adv] [pron] [verb] | 304 |
|
| 3 | [Wh adv] can [adv] [pron] [verb] | 280 |
|
| 4 | why can [adv] [pron] [verb] | 280 |
|
