| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | question [prep] a [noun sg] [prep] | 79 |
|
| 2 | [prep] [subord] a [noun sg] [prep] | 70 |
|
| 3 | question [prep] [subord] a [noun sg] | 29 |
|
| 4 | question [subord] a [noun sg] [prep] | 8 |
|
