| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] what happened [prep] | 226 |
|
| 2 | [prep] what happened to | 85 |
|
| 3 | of what happened [prep] | 69 |
|
| 4 | of what happened [prep] | 69 |
|
| 5 | [prep] what happened in | 62 |
|
| 6 | about what happened [prep] | 50 |
|
| 7 | about what happened [prep] | 50 |
|
| 8 | [prep] what happened at | 27 |
|
| 9 | [prep] what happened on | 17 |
|
| 10 | for what happened [prep] | 15 |
|
| 11 | for what happened [prep] | 15 |
|
| 12 | to what happened [prep] | 15 |
|
| 13 | to what happened [prep] | 15 |
|
| 14 | at what happened [prep] | 12 |
|
| 15 | at what happened [prep] | 12 |
|
| 16 | by what happened [prep] | 12 |
|
| 17 | by what happened [prep] | 12 |
|
| 18 | on what happened [prep] | 11 |
|
| 19 | on what happened [prep] | 11 |
|
| 20 | after what happened [prep] | 11 |
|
| 21 | after what happened [prep] | 11 |
|
| 22 | [prep] what happened during | 8 |
|
| 23 | [prep] what happened with | 7 |
|
| 24 | in what happened [prep] | 7 |
|
| 25 | in what happened [prep] | 7 |
|
| 26 | with what happened [prep] | 7 |
|
| 27 | with what happened [prep] | 7 |
|
| 28 | [prep] what happened between | 5 |
|
