| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should be [verb] [verb] a [noun] | 56 |
|
| 2 | should be [vb pp] [verb] a [noun] | 54 |
|
| 3 | should be [verb] [to-vb] a [noun] | 53 |
|
| 4 | should be [verb] [verb] a [noun sg] | 53 |
|
| 5 | should be required [verb] a [noun] | 9 |
|
| 6 | should be require [verb] a [noun] | 9 |
|
| 7 | should be asked [verb] a [noun] | 6 |
|
| 8 | should be ask [verb] a [noun] | 6 |
|
| 9 | should be allow [verb] a [noun] | 5 |
|
| 10 | should be allowed [verb] a [noun] | 5 |
|
