| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to ensure that [pron] [is] [adv] [vb pp] | 7 |
|
| 2 | to ensure [that] [pron] [is] [adv] [vb pp] | 7 |
|
| 3 | to ensure [conj] [pers pn] [is] [adv] [vb pp] | 7 |
|
| 4 | to ensure that [pron] [is] [adv] [vb pp] | 7 |
|
| 5 | to ensure [conj] it [is] [adv] [vb pp] | 6 |
|
| 6 | to ensure [conj] it [is] [adv] [vb pp] | 6 |
|
| 7 | to ensure [conj] [pron] is [adv] [vb pp] | 5 |
|
