| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [verb] [verb] | 3839 |
|
| 2 | [pron] [verb] happen | 3007 |
|
| 3 | [Wh det] [verb] happen | 2125 |
|
| 4 | what [verb] happen | 2061 |
|
