| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] time | 11424 |
|
| 2 | at the time | 8151 |
|
| 3 | at the time | 8151 |
|
| 4 | at a time | 3145 |
|
| 5 | at a time | 3145 |
|
| 6 | at no time | 126 |
|
| 7 | at no time | 126 |
|
