| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | i [vb base] n't happen | 7 |
|
| 2 | i do [adv] happen | 7 |
|
| 3 | i [vb base] [not/n't] happen | 7 |
|
| 4 | i [vb base] [adv] happen | 7 |
|
| 5 | i [vb base] not happen | 7 |
|
| 6 | i [vb base] [adv] happen | 7 |
|
