| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | required [to-vb] the [adj] | 183 |
|
| 2 | [am/are] required [to-vb] [adj] | 128 |
|
| 3 | [am/are] required [to-vb] the | 96 |
|
| 4 | [am/are] [to-vb] the [adj] | 93 |
|
