| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [verb] [verb] a [noun] | 678 |
|
| 2 | be [vb pp] [verb] a [noun] | 643 |
|
| 3 | be required [verb] a [noun] | 156 |
|
| 4 | [be] required [verb] a [noun] | 156 |
|
| 5 | be required [verb] [art] [noun] | 155 |
|
| 6 | be required [verb] [art] [noun] | 155 |
|
| 7 | be required [verb] a [noun] | 61 |
|
| 8 | be require [verb] a [noun] | 47 |
|
| 9 | [be] required [verb] a [noun] | 47 |
|
