| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [adv] happens that | 75 |
|
| 2 | it so happens that | 28 |
|
| 3 | it often happens that | 24 |
|
| 4 | it just happens that | 8 |
|
| 5 | it sometimes happens that | 6 |
|
