| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] [prep] | 26356 |
|
| 2 | [adv prt] [v-ing] [prep] | 1558 |
|
| 3 | back [verb] [prep] | 283 |
|
| 4 | back [v-ing] [prep] | 49 |
|
