| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at an [adj] [noun sg] | 1898 |
|
| 2 | [adj] an [adj] [noun sg] | 1519 |
|
| 3 | [adj] at [adj] [noun sg] | 297 |
|
| 4 | [adj] at an [adj] | 76 |
|
| 5 | [adj] at an [noun sg] | 50 |
|
