| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] not [verb] | 32879 |
|
| 2 | [be] [adv] happen | 326 |
|
| 3 | [be] not happen | 68 |
|
| 4 | [be] [not/n't] happen | 68 |
|
