| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | thing [vb -s] [not/n't] happen | 6 |
|
| 2 | thing does [not/n't] happen | 6 |
|
| 3 | thing do [not/n't] happen | 6 |
|
| 4 | thing [verb] not happen | 5 |
|
