| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be required [verb] a [noun] | 156 |
|
| 2 | be [verb] [verb] a report | 15 |
|
| 3 | be [vb pp] [verb] a report | 13 |
|
| 4 | be required [verb] [art] report | 7 |
|
| 5 | be required [verb] [art] report | 7 |
|
| 6 | be required [verb] a report | 6 |
|
| 7 | [be] required [verb] a report | 6 |
|
| 8 | be require [verb] a report | 6 |
|
