| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] when [pron] | 910 |
|
| 2 | why [adv] [pron] | 86 |
|
| 3 | why [Wh adv] [pron] | 19 |
|
| 4 | why when [pron] | 9 |
|
