| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | look back [prep] the [num ord] | 20 |
|
| 2 | look back [prep] the [num ord] | 20 |
|
| 3 | look back [prep] the last | 10 |
|
| 4 | looking back [prep] the [num ord] | 6 |
|
| 5 | look back over the [num ord] | 6 |
|
| 6 | looked back [prep] the [num ord] | 5 |
|
| 7 | look back [prep] the first | 5 |
|
| 8 | look back on the [num ord] | 5 |
|
| 9 | look back to the [num ord] | 5 |
|
