| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a question [prep] [noun sg] | 490 |
|
| 2 | question [prep] a [noun sg] | 181 |
|
| 3 | a [prep] a [noun sg] | 136 |
|
| 4 | a question [prep] a | 32 |
|
