| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] required | 67 |
|
| 2 | [adv] required | 65 |
|
| 3 | as required | 12 |
|
| 4 | as required | 12 |
|
| 5 | still required | 7 |
|
| 6 | still required | 7 |
|
