| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back at [noun] [unc] | 26 |
|
| 2 | back at [noun] 's | 23 |
|
| 3 | back at [noun] ['s] | 23 |
|
| 4 | back at [noun] 's | 23 |
|
| 5 | back at [noun prp] [unc] | 22 |
|
