| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [v-ing] back | 490 |
|
| 2 | [verb] back over | 273 |
|
| 3 | [verb] [v-ing] over | 129 |
|
| 4 | [v-ing] back over | 68 |
|
