| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be required to [be] | 133 |
|
| 2 | [adv] be to [be] | 130 |
|
| 3 | [adv] required to [be] | 20 |
|
| 4 | [adv] be required to | 7 |
|
