| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adv] a [det] [noun pl] | 35 |
|
| 2 | at [adv] a few [noun pl] | 35 |
|
| 3 | at least a [det] [noun pl] | 21 |
|
| 4 | at only a [det] [noun pl] | 8 |
|
| 5 | at [adv] a [det] days | 5 |
|
