| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] required [to-vb] [noun] at | 7 |
|
| 2 | be required [to-vb] [noun] at | 7 |
|
| 3 | required [to-vb] [art] [noun] at | 6 |
|
| 4 | required [to-vb] [art] [noun] at | 6 |
|
| 5 | required [to-vb] a [noun] at | 5 |
|
