| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] a [det] days | 6 |
|
| 2 | back [prep] [art] [det] days | 6 |
|
| 3 | back [prep] [art] few days | 6 |
|
| 4 | back in [art] [det] days | 5 |
|
| 5 | back in [art] [det] days | 5 |
|
