| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] at [det] time and | 21 |
|
| 2 | [verb] at that time and | 15 |
|
| 3 | [verb] at any time and | 10 |
|
| 4 | [verb] at this time and | 5 |
|
| 5 | [v-ing] at [det] time and | 5 |
|
