| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] back [prep] a [num] | 8 |
|
| 2 | [verb] back from a [num] | 6 |
|
| 3 | go back [prep] a [num] | 6 |
|
| 4 | come back [prep] a [num] | 5 |
|
| 5 | [verb] back to a [num] | 5 |
|
