| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] happen [prep] | 490 |
|
| 2 | [verb] [adv] happen [prep] | 133 |
|
| 3 | [Wh det] [adv] happen [prep] | 102 |
|
| 4 | [verb] [Wh det] [adv] happen | 38 |
|
