| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | any doubt as [prep] [subord] | 9 |
|
| 2 | any doubt as [prep] whether | 9 |
|
| 3 | any doubt as [prep] whether | 9 |
|
| 4 | any doubt as to [conj] | 9 |
|
