| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at one [noun sg] a [noun sg] | 25 |
|
| 2 | at [num] time a [noun sg] | 10 |
|
| 3 | at [num] point a [noun sg] | 7 |
|
| 4 | at [num] pound a [noun sg] | 6 |
|
