| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [noun sg] | 15818 |
|
| 2 | at a [noun sg] | 14548 |
|
| 3 | at a time | 3145 |
|
| 4 | at an [noun sg] | 1270 |
|
| 5 | at a meeting | 698 |
|
| 6 | at a cost | 517 |
|
| 7 | at a rate | 408 |
|
| 8 | at a distance | 300 |
|
| 9 | at a loss | 287 |
|
| 10 | at a price | 250 |
|
| 11 | at a angle | 214 |
|
| 12 | at a party | 212 |
|
| 13 | at a press | 205 |
|
| 14 | at a disadvantage | 179 |
|
| 15 | at a level | 177 |
|
| 16 | at a table | 166 |
|
| 17 | at a conference | 164 |
|
| 18 | at a glance | 149 |
|
| 19 | at a number | 140 |
|
| 20 | at a end | 130 |
|
| 21 | at a point | 126 |
|
| 22 | at a house | 123 |
|
| 23 | at a premium | 106 |
|
| 24 | at a moment | 94 |
|
| 25 | at a stroke | 92 |
|
| 26 | at a place | 92 |
|
| 27 | at a discount | 82 |
|
| 28 | at a ceremony | 79 |
|
| 29 | at a dinner | 70 |
|
| 30 | at a height | 68 |
|
