| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [to-vb] [prep] the back | 20 |
|
| 2 | [vb past] [to-vb] [prep] [art] back | 19 |
|
| 3 | [vb past] [to-vb] at [art] back | 7 |
|
