| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] [vb base] what happen | 114 |
|
| 2 | [vb base] what happen to | 86 |
|
| 3 | [pron] what happen to | 17 |
|
| 4 | [pron] [vb base] happen to | 7 |
|
