| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] [noun sg] | 112190 |
|
| 2 | at [art] [noun sg] | 112190 |
|
| 3 | [prep] an [noun sg] | 57363 |
|
| 4 | at a [noun sg] | 15818 |
|
| 5 | at an [noun] | 1398 |
|
