| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] have happened to | 101 |
|
| 2 | [prep] what have happen to | 100 |
|
| 3 | [prep] [Wh det] had happen to | 53 |
|
| 4 | of [Wh det] have happen to | 39 |
|
| 5 | [prep] [Wh det] has happen to | 33 |
|
| 6 | about [Wh det] have happen to | 17 |
|
| 7 | [prep] [Wh det] 's happen to | 15 |
|
| 8 | at [Wh det] have happen to | 11 |
|
| 9 | after [Wh det] have happen to | 7 |
|
| 10 | to [Wh det] have happen to | 6 |
|
| 11 | for [Wh det] have happen to | 6 |
|
| 12 | by [Wh det] have happen to | 5 |
|
