| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] happens that | 99 |
|
| 2 | so happens that | 43 |
|
| 3 | often happens that | 25 |
|
| 4 | just happens that | 9 |
|
| 5 | sometimes happens that | 6 |
|
| 6 | frequently happens that | 5 |
|
