| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [vb -s] been happening to | 6 |
|
| 2 | [prep] [Wh det] [verb] been happening to | 6 |
|
| 3 | [prep] what [verb] been happening to | 6 |
|
| 4 | [prep] what [verb] been happening to | 6 |
|
| 5 | [prep] [pron] [verb] been happening to | 6 |
|
| 6 | [prep] [pron] have been happening to | 6 |
|
