| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] back at [adj] | 23 |
|
| 2 | [vb past] back at [adj] | 7 |
|
| 3 | [vb pp] back at [adj] | 5 |
|
| 4 | look back at [adj] | 5 |
|
| 5 | [v-ing] back at [adj] | 5 |
|
