| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] at [noun prp] | 14660 |
|
| 2 | [verb] back at | 1630 |
|
| 3 | back at [noun prp] | 352 |
|
| 4 | [verb] back [noun prp] | 176 |
|
