| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back at [noun prp] [noun] [noun] | 7 |
|
| 2 | back at [noun prp] [noun prp] [noun] | 6 |
|
| 3 | back at [noun prp] [noun] [noun prp] | 5 |
|
