| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to ensure [conj] [adj] [noun pl] | 164 |
|
| 2 | is [conj] [adj] [noun pl] | 116 |
|
| 3 | is to ensure [conj] [noun pl] | 27 |
|
| 4 | is to ensure [conj] [adj] | 16 |
|
