| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [to-vb] that [noun] [verb] | 9 |
|
| 2 | is [verb] [verb] that [noun pl] [verb] | 8 |
|
| 3 | is [vb pp] [verb] that [noun] [verb] | 7 |
|
| 4 | is [verb] ensure that [noun] [verb] | 6 |
|
| 5 | is [verb] [verb] that [noun] [vb base] | 6 |
|
| 6 | is [verb] to ensure that [noun] [verb] | 6 |
|
