| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [noun prp] [prep] a [adj] | 162 |
|
| 2 | [prep] [noun prp] [prep] a [det] | 85 |
|
| 3 | at [noun prp] [prep] [art] [det] | 31 |
|
| 4 | at [noun] [prep] a [det] | 15 |
|
