| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | happened was | 148 |
|
| 2 | happened was | 38 |
|
| 3 | happening was | 21 |
|
| 4 | happen was | 9 |
|
| 5 | happen was | 8 |
|
| 6 | to happen was | 7 |
|
