| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] has been happen [prep] | 28 |
|
| 2 | of [Wh det] has happen [prep] | 26 |
|
| 3 | of [Wh det] has been happen | 12 |
|
| 4 | of [Wh det] has been [prep] | 6 |
|
