| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [verb] [to-vb] [prep] the [noun] | 391 |
|
| 2 | is [vb pp] [to-vb] [prep] the [noun] | 287 |
|
| 3 | [be] required [to-vb] [prep] the [noun] | 63 |
|
| 4 | be required [to-vb] [prep] the [noun] | 63 |
|
| 5 | is required [to-vb] [prep] [art] [noun] | 20 |
|
| 6 | is required [to-vb] [prep] [art] [noun] | 20 |
|
| 7 | is required [verb] [prep] the [noun] | 19 |
|
| 8 | is required [to-vb] [prep] the [noun] | 17 |
|
| 9 | is required [to-vb] [prep] the [noun] | 17 |
|
| 10 | is require [to-vb] [prep] the [noun] | 17 |
|
| 11 | [is] required [to-vb] [prep] the [noun] | 17 |
|
