| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | question [prep] a [noun] | 189 |
|
| 2 | [prep] whether a [noun] | 155 |
|
| 3 | question [prep] whether [noun] | 84 |
|
| 4 | question [prep] whether a | 34 |
|
| 5 | question whether a [noun] | 22 |
|
