| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [Wh det] happen | 521 |
|
| 2 | i [adv] [Wh det] | 54 |
|
| 3 | i [adv] happen | 40 |
|
| 4 | i [Wh det] happen | 38 |
|
