| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] be [verb] a [noun] | 1037 |
|
| 2 | be required [verb] a [noun] | 156 |
|
| 3 | [vb mod] be required [verb] [noun] | 77 |
|
| 4 | [vb mod] be required [verb] a | 62 |
|
