| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [num ord] [prep] [num] | 12 |
|
| 2 | at last [prep] [num] | 8 |
|
| 3 | at [num ord] in [num] | 5 |
|
| 4 | at [num ord] in [num] | 5 |
|
