| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] [verb] it happen | 11 |
|
| 2 | [pers pn] [vb past] [verb] it happen | 10 |
|
| 3 | [vb past] [adv] [verb] it happen | 14 |
|
| 4 | [vb past] [not/n't] [verb] it happen | 14 |
|
| 5 | [vb past] not [verb] it happen | 14 |
|
| 6 | [vb past] n't [verb] it happen | 9 |
|
| 7 | [vb past] not [verb] it happen | 5 |
|
