| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [prep] the same time | 166 |
|
| 2 | at about the same [noun sg] | 161 |
|
| 3 | at around the same [noun sg] | 32 |
|
| 4 | at [prep] the same level | 7 |
|
