| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] not [verb] | 73855 |
|
| 2 | [verb] [adv] happen | 1066 |
|
| 3 | [verb] [not/n't] happen | 641 |
|
| 4 | [verb] not happen | 641 |
|
