| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | ensure [that] it [is] [adv] [vb pp] | 16 |
|
| 2 | ensure that it [is] [adv] [vb pp] | 16 |
|
| 3 | ensure that it [is] [adv] [vb pp] | 16 |
|
| 4 | ensure [conj] it is [adv] [vb pp] | 14 |
|
| 5 | ensure [conj] it [is] [adv] [vb pp] | 11 |
|
| 6 | to ensure [conj] it [is] [adv] [vb pp] | 9 |
|
| 7 | ensure [conj] it [is] [not/n't] [vb pp] | 5 |
|
| 8 | ensure [conj] it [is] not [vb pp] | 5 |
|
| 9 | ensure [conj] it [is] not [vb pp] | 5 |
|
