| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] ensure that | 87 |
|
| 2 | is [adj] ensure that | 86 |
|
| 3 | is [adj] to ensure that | 86 |
|
| 4 | is important ensure that | 29 |
|
| 5 | is important ensure that | 29 |
|
| 6 | is necessary ensure that | 16 |
|
| 7 | is necessary ensure that | 16 |
|
| 8 | is essential ensure that | 11 |
|
| 9 | is essential ensure that | 11 |
|
