| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun pl] at [art] [det] time | 30 |
|
| 2 | [prep] [noun pl] at [art] same time | 29 |
|
| 3 | [prep] [noun pl] at the [det] time | 29 |
|
| 4 | of [noun pl] at [art] [det] time | 13 |
|
