| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | required [to-vb] the [adj] [noun] | 154 |
|
| 2 | are required [to-vb] [adj] [noun] | 106 |
|
| 3 | are required [to-vb] the [noun] | 71 |
|
| 4 | are [to-vb] the [adj] [noun] | 63 |
|
| 5 | are required [to-vb] the [adj] | 23 |
|
