| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] to ensure that [adj] | 78 |
|
| 2 | [is] [verb] [verb] that [adj] | 36 |
|
| 3 | [is] [verb] [to-vb] that [adj] | 32 |
|
| 4 | [is] [verb] to ensure [conj] [adj] | 15 |
|
| 5 | [is] [verb] ensure that [adj] | 15 |
|
