| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun] [noun sg] be required | 47 |
|
| 2 | [noun] [noun sg] be required for | 34 |
|
| 3 | a [noun] [noun sg] be for | 13 |
|
| 4 | a [noun sg] be required for | 12 |
|
| 5 | a [noun] be required for | 12 |
|
