| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | look back [prep] the [noun] | 20 |
|
| 2 | look back [prep] the [noun] | 20 |
|
| 3 | look back [prep] the [noun sg] | 17 |
|
| 4 | look back on the [noun] | 6 |
|
| 5 | look back on the [noun] | 6 |
|
