| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is to ensure that [adj] | 38 |
|
| 2 | is ensure that [det] | 24 |
|
| 3 | is ensure that [adj] | 18 |
|
| 4 | is ensure that all | 10 |
|
| 5 | is ensure that all | 10 |
|
