| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun sg] [adv] | 1890 |
|
| 2 | [adj] a [noun sg] [adv] | 1004 |
|
| 3 | at [adj] [noun sg] [adv] | 867 |
|
| 4 | at [adj] a [noun sg] | 290 |
|
| 5 | at [adj] a [adv] | 22 |
|
