| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] | 181665 |
|
| 2 | at the | 151297 |
|
| 3 | at a | 25294 |
|
| 4 | at an | 3813 |
|
| 5 | at every | 832 |
|
| 6 | at no | 423 |
|
