| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | explanation as to [adv] [pron] | 12 |
|
| 2 | explanation as to [adv] [pron] | 12 |
|
| 3 | explanation as to [adv] [pers pn] | 11 |
|
| 4 | explanation as to [Wh adv] [pron] | 11 |
|
| 5 | explanation as to why [pron] | 9 |
|
| 6 | explanation as to why [pron] | 9 |
|
