| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [adj] when [art] | 14 |
|
| 2 | back [prep] [adj] when [art] | 14 |
|
| 3 | back [prep] [adj] when [art] | 14 |
|
| 4 | back [prep] [num] when [art] | 14 |
|
| 5 | back [prep] [adj] when the | 9 |
|
| 6 | back to [adj] when [art] | 9 |
|
| 7 | back [prep] [adj] when the | 9 |
|
| 8 | back [prep] [adj] when a | 5 |
|
| 9 | back [prep] [adj] when a | 5 |
|
| 10 | back in [adj] when [art] | 5 |
|
