| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] at time of | 10 |
|
| 2 | be [verb] at time of | 7 |
|
| 3 | be [verb] at times of | 5 |
|
| 4 | be [verb] at time of | 5 |
|
