| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [adv prt] [conj] [art] | 1168 |
|
| 2 | [vb pp] to ensure [conj] [art] | 208 |
|
| 3 | [vb pp] [adv prt] to ensure [conj] | 21 |
|
| 4 | [adv prt] to ensure [conj] [art] | 8 |
|
| 5 | [vb pp] [adv prt] to ensure [art] | 7 |
|
