| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb past] not [verb] | 13836 |
|
| 2 | [pron] [vb past] [adv] happen | 218 |
|
| 3 | [pron] [vb past] not happen | 101 |
|
| 4 | [pron] [vb past] [not/n't] happen | 101 |
|
| 5 | [pron] [verb] not happen | 51 |
|
