| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] at the time of | 88 |
|
| 2 | [adv] at a time of | 13 |
|
| 3 | even at [art] time of | 11 |
|
| 4 | especially at [art] time of | 6 |
|
| 5 | either at [art] time of | 6 |
|
| 6 | there at [art] time of | 5 |
|
