| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [adv] happen | 337 |
|
| 2 | [Wh det] [adv] happen | 337 |
|
| 3 | [pron] just happen | 201 |
|
| 4 | [Wh det] just [verb] | 93 |
|
| 5 | [Wh det] just happen | 23 |
|
