| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] that it [is] [not/n't] [verb] | 47 |
|
| 2 | ensure that it [is] [adv] [verb] | 18 |
|
| 3 | ensure that it [be] [not/n't] [verb] | 9 |
|
| 4 | ensure that [pron] [is] [not/n't] [verb] | 7 |
|
| 5 | ensure that [pers pn] [is] [not/n't] [verb] | 7 |
|
| 6 | ensure [conj] it [is] [not/n't] [verb] | 6 |
|
| 7 | ensure that it [is] [not/n't] [verb] | 6 |
|
