| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back over the [adj] | 21 |
|
| 2 | back over the [num ord] | 14 |
|
| 3 | back over the last | 11 |
|
| 4 | back over the last | 11 |
|
| 5 | back over the past | 7 |
|
| 6 | back over the past | 7 |
|
