| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [vb pp] [to-vb] that [det] [noun] | 10 |
|
| 2 | is [vb pp] [to-vb] that [adj] [noun pl] | 7 |
|
| 3 | is [vb pp] [to-vb] that [adj] [noun sg] | 7 |
|
| 4 | is [vb pp] to ensure that [adj] [noun] | 7 |
|
| 5 | is [vb pp] [to-vb] that [adj] [noun] | 5 |
|
