| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] happened to | 122 |
|
| 2 | just happened to | 55 |
|
| 3 | ever happened to | 20 |
|
| 4 | also happened to | 12 |
|
| 5 | really happened to | 5 |
|
