| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adj] to ensure that | 47 |
|
| 2 | be [adj] ensure that | 47 |
|
| 3 | be necessary ensure that | 8 |
|
| 4 | be necessary ensure that | 8 |
|
| 5 | be able ensure that | 5 |
|
| 6 | be able ensure that | 5 |
|
| 7 | be careful ensure that | 5 |
|
| 8 | be careful ensure that | 5 |
|
