| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [to-vb] that all | 21 |
|
| 2 | is [to-vb] that all | 21 |
|
| 3 | is [to-vb] [that] all | 21 |
|
| 4 | is to ensure [conj] all | 8 |
|
