| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [prep] a | 31510 |
|
| 2 | [v-ing] [prep] [subord] | 811 |
|
| 3 | [prep] [subord] a | 602 |
|
| 4 | [v-ing] [subord] a | 259 |
|
