| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] back [prep] [noun] | 995 |
|
| 2 | [vb pp] [adv] at [noun] | 853 |
|
| 3 | [vb pp] [adv prt] at [noun] | 476 |
|
| 4 | [verb] back at [noun] | 301 |
|
| 5 | [vb pp] back at [noun] | 25 |
|
