| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] ensure [that] they do not | 8 |
|
| 2 | [noun pl] ensure [that] they do not | 6 |
|
| 3 | ensure [that] they do not [verb] | 20 |
|
| 4 | ensure [that] they do not [vb infin] | 20 |
|
