| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [v-ing] back for more | 7 |
|
| 2 | keep [v-ing] back for more | 6 |
|
| 3 | [vb base] [v-ing] back for more | 5 |
|
| 4 | keep [v-ing] back for more | 5 |
|
