| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [prep] | 40005 |
|
| 2 | [prep] [v-ing] [Wh det] | 1861 |
|
| 3 | [prep] [Wh det] [prep] | 655 |
|
| 4 | [v-ing] [Wh det] [prep] | 98 |
|
