| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] [verb] at [art] | 3038 |
|
| 2 | back [conj] [verb] [art] | 314 |
|
| 3 | back [conj] [verb] at | 72 |
|
| 4 | back [verb] at [art] | 13 |
|
