| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] do n't happen | 57 |
|
| 2 | that [verb] n't happen | 36 |
|
| 3 | [det] [vb -s] n't happen | 28 |
|
| 4 | [det] does n't happen | 28 |
|
| 5 | [det] [vb past] n't happen | 25 |
|
| 6 | [det] did n't happen | 25 |
|
| 7 | this [verb] n't happen | 21 |
|
