| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [verb] at [art] | 1372 |
|
| 2 | [verb] back at [art] | 414 |
|
| 3 | [vb past] back at [art] | 182 |
|
| 4 | [vb past] [verb] back [art] | 88 |
|
| 5 | [vb past] [verb] back at | 55 |
|
