| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] at the same time | 140 |
|
| 2 | [prep] at the same time | 25 |
|
| 3 | [prep] [v-ing] at the time | 18 |
|
| 4 | [prep] [v-ing] at the same | 17 |
|
