| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [noun prp] at the time | 225 |
|
| 2 | [noun prp] at the same time | 80 |
|
| 3 | [prep] [noun prp] at the same | 48 |
|
| 4 | [prep] at the same time | 25 |
|
