| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adv] [noun sg] | 15 |
|
| 2 | at a [adv] [noun sg] | 15 |
|
| 3 | at an [adv] [noun sg] | 13 |
|
| 4 | at a under [noun sg] | 11 |
|
| 5 | at a [adv] value | 11 |
|
| 6 | at a under [noun sg] | 11 |
|
