| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [adj] days | 40 |
|
| 2 | back [prep] [num] days | 17 |
|
| 3 | back [prep] [det] days | 14 |
|
| 4 | back [prep] those days | 13 |
|
| 5 | back [prep] those days | 13 |
|
| 6 | back in [adj] days | 12 |
|
| 7 | back in [adj] days | 12 |
|
| 8 | back to [adj] days | 11 |
|
| 9 | back to [adj] days | 11 |
|
| 10 | back on [adj] days | 8 |
|
| 11 | back on [adj] days | 8 |
|
| 12 | back [prep] [adj] days | 5 |
|
