| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] back at the [noun] | 29 |
|
| 2 | [vb base] back at the [noun] | 29 |
|
| 3 | [vb base] back at the [noun sg] | 22 |
|
| 4 | look back at the [noun] | 19 |
|
| 5 | [vb base] back at the [noun pl] | 6 |
|
