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