| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] | 181665 |
|
| 2 | at [art] | 181665 |
|
| 3 | [prep] an | 118418 |
|
| 4 | [prep] an | 118417 |
|
| 5 | at a | 29107 |
|
| 6 | at an | 3813 |
|
