| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] at the same time | 140 |
|
| 2 | be at the same time | 113 |
|
| 3 | be [v-ing] at the time | 84 |
|
| 4 | be [v-ing] at the same | 57 |
|
