| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a [noun sg] | 15531 |
|
| 2 | question [prep] a [noun sg] | 181 |
|
| 3 | [v-ing] question [prep] [noun sg] | 29 |
|
| 4 | [v-ing] question [prep] a | 6 |
|
