| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] required [to-vb] [prep] [noun sg] | 12 |
|
| 2 | [noun sg] required [to-vb] [prep] [noun sg] | 7 |
|
| 3 | [noun] required [to-vb] for [noun sg] | 5 |
|
| 4 | [noun] required [to-vb] for [noun sg] | 5 |
|
