| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [det] at [art] time of | 8 |
|
| 2 | [prep] [det] at [art] time of | 8 |
|
| 3 | [verb] [det] at [art] time of | 5 |
|
| 4 | [det] [noun] at [art] time of | 33 |
|
| 5 | [det] [noun sg] at [art] time of | 23 |
|
| 6 | [det] [noun pl] at [art] time of | 10 |
|
