| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb -s] happen [adv] be | 8 |
|
| 2 | [Wh det] [vb -s] happen [adv] be | 8 |
|
| 3 | what [vb -s] happen [adv] be | 8 |
|
| 4 | what [vb -s] happen [adv] be | 8 |
|
