| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] that a | 294 |
|
| 2 | is to ensure that [art] | 83 |
|
| 3 | is [to-vb] that a | 28 |
|
| 4 | be to ensure that a | 13 |
|
| 5 | [be] to ensure that a | 13 |
|
| 6 | is to ensure [conj] a | 10 |
|
| 7 | [is] to ensure that a | 10 |
|
| 8 | is ensure that a | 10 |
|
| 9 | is to ensure that a | 10 |
|
| 10 | is to ensure [that] a | 10 |
|
