| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it happened [prep] | 39 |
|
| 2 | [subord] it happened to | 24 |
|
| 3 | [subord] it happened to | 24 |
|
| 4 | if it happened [prep] | 14 |
|
| 5 | when it happened [prep] | 7 |
|
| 6 | because it happened [prep] | 7 |
|
