| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be required to be [vb pp] [prep] | 58 |
|
| 2 | be required to be [vb pp] [prep] | 58 |
|
| 3 | is required to be [vb pp] [prep] | 24 |
|
| 4 | are required to be [vb pp] [prep] | 15 |
|
| 5 | be required to be [vb pp] in | 14 |
|
| 6 | be required to be [vb pp] in | 14 |
|
| 7 | be required to be [vb pp] [prep] | 11 |
|
| 8 | be required to be [vb pp] to | 10 |
|
| 9 | be required to be [vb pp] to | 10 |
|
| 10 | be required to be [vb pp] by | 10 |
|
| 11 | be required to be [vb pp] by | 10 |
|
| 12 | be required to be [vb pp] with | 9 |
|
| 13 | be required to be [vb pp] with | 9 |
|
| 14 | was required to be [vb pp] [prep] | 5 |
|
| 15 | be required to be made [prep] | 5 |
|
