| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the same time ensure | 14 |
|
| 2 | at the same time ensure | 14 |
|
| 3 | at [art] same time ensure | 14 |
|
| 4 | at [art] same time ensure | 14 |
|
| 5 | at [art] same time ensuring | 6 |
|
| 6 | at [art] same time ensure | 5 |
|
