| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not required to [be] [vb pp] | 5 |
|
| 2 | not required to [be] [verb] | 5 |
|
| 3 | not required to [be] [verb] | 5 |
|
| 4 | not required to be [verb] | 5 |
|
| 5 | not required to be [verb] | 5 |
|
