| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adj] [noun prp] | 2192 |
|
| 2 | back at [noun prp] | 352 |
|
| 3 | back at [adj] | 189 |
|
| 4 | back [adj] [noun prp] | 24 |
|
