| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | not [be] [verb] | 15103 |
|
| 2 | not [be] [vb pp] | 14309 |
|
| 3 | [adv] [be] required | 261 |
|
| 4 | not [be] required | 97 |
|
| 5 | [not/n't] [be] required | 89 |
|
| 6 | not [be] required | 89 |
|
| 7 | not [be] require | 87 |
|
