| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at a [adj] time and | 27 |
|
| 2 | at a [adj] time and | 27 |
|
| 3 | at a particular time and | 6 |
|
| 4 | at a certain time and | 6 |
|
| 5 | at a particular time and | 6 |
|
| 6 | at a certain time and | 6 |
|
