| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] [adj] [adj] | 1839 |
|
| 2 | is [adv] [adj] to ensure | 51 |
|
| 3 | is [adj] to ensure [adj] | 13 |
|
| 4 | [adv] [adj] to ensure [adj] | 12 |
|
