| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] a | 20914 |
|
| 2 | [prep] [adv] [v-ing] | 9081 |
|
| 3 | [prep] [adv] a | 5959 |
|
| 4 | [adv] [v-ing] a | 5515 |
|
