| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] are required [to-vb] [prep] [noun sg] | 8 |
|
| 2 | are required [to-vb] [noun] [prep] [noun sg] | 6 |
|
| 3 | are required [to-vb] [prep] [art] [noun sg] | 11 |
|
| 4 | are required [to-vb] [prep] [art] [noun sg] | 11 |
|
| 5 | are required [to-vb] [prep] the [noun sg] | 9 |
|
| 6 | are required [to-vb] [prep] the [noun sg] | 9 |
|
| 7 | are required [to-vb] [prep] [adj] [noun sg] | 6 |
|
