| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun pl] at the time | 57 |
|
| 2 | of [noun pl] at the time | 26 |
|
| 3 | for [noun pl] at the time | 6 |
|
| 4 | by [noun pl] at the time | 6 |
|
