| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [num] at the time of | 9 |
|
| 2 | be [num] at [art] time of | 9 |
|
| 3 | was [num] at [art] time of | 7 |
|
| 4 | [was/were] [num] at [art] time of | 7 |
|
