| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] out to ensure that | 9 |
|
| 2 | [vb pp] out to ensure that | 7 |
|
| 3 | carry out to ensure that | 6 |
|
| 4 | carried out to ensure that | 5 |
|
| 5 | out to ensure that [art] | 5 |
|
| 6 | out to ensure that [art] | 5 |
|
