| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] [det] | 8331 |
|
| 2 | at [art] [det] | 8331 |
|
| 3 | at an [adj] | 2276 |
|
| 4 | [prep] an [det] | 115 |
|
| 5 | [prep] an [det] | 115 |
|
| 6 | at a [det] | 93 |
|
| 7 | at an [det] | 16 |
|
