| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [adv] [art] required | 12 |
|
| 2 | be [not/n't] [art] required | 9 |
|
| 3 | be not [art] required | 9 |
|
| 4 | be [adv] the required | 9 |
|
| 5 | be not [art] required | 8 |
|
| 6 | are [adv] [art] required | 7 |
|
