| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | perform [prep] the same time | 8 |
|
| 2 | perform at the same time | 8 |
|
| 3 | perform [prep] the same time | 8 |
|
| 4 | perform at the same time | 8 |
|
| 5 | perform [prep] the same time | 8 |
|
| 6 | performed [prep] the same time | 7 |
|
