| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] [verb] [art] | 11798 |
|
| 2 | [subord] [to-vb] [art] | 2016 |
|
| 3 | [conj] to ensure [art] | 38 |
|
| 4 | [subord] ensure [art] | 22 |
|
