| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [adv] [vb past] happen | 16 |
|
| 2 | what [adv] [vb past] happen | 8 |
|
| 3 | what [adv] [vb past] happen | 8 |
|
| 4 | [Wh det] [adv] [vb past] happen | 8 |
|
| 5 | [pron] [adv] had happen | 7 |
|
| 6 | [pers pn] [adv] [vb past] happen | 6 |
|
| 7 | [pron] [adv] [vb past] happened | 6 |
|
| 8 | [pron] [adv] [vb past] happen | 5 |
|
| 9 | [pron] [adv] did happen | 5 |
|
