| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | or at [art] time | 20 |
|
| 2 | or at [art] time | 20 |
|
| 3 | or at the time | 15 |
|
| 4 | or at the time | 15 |
|
| 5 | or at a time | 5 |
|
| 6 | or at a time | 5 |
|
