| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [noun sg] at the time of | 90 |
|
| 2 | [noun sg] [noun sg] at [art] time of | 88 |
|
| 3 | [noun prp] [noun sg] at [art] time of | 10 |
|
| 4 | [noun] [noun sg] at a time of | 10 |
|
