| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adj] ensure [adj] | 13 |
|
| 2 | is [adj] to ensure [adj] | 13 |
|
| 3 | is [adj] ensure [det] | 8 |
|
| 4 | is [adj] ensure [adj] | 5 |
|
