| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [not/n't] [verb] | 34511 |
|
| 2 | [vb -s] [not/n't] [vb infin] | 29603 |
|
| 3 | [verb] [not/n't] happen | 481 |
|
| 4 | [vb -s] [not/n't] happen | 297 |
|
| 5 | [vb -s] [adv] happen | 213 |
|
