| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [prep] | 40001 |
|
| 2 | [v-ing] [prep] 30 | 56 |
|
| 3 | [prep] [prep] 30 | 33 |
|
| 4 | [prep] [v-ing] 30 | 21 |
|
