| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | had happened to the | 53 |
|
| 2 | had happened in the | 46 |
|
| 3 | had happened at the | 16 |
|
| 4 | had happened during the | 11 |
|
| 5 | had happened on the | 9 |
|
| 6 | had happened with the | 5 |
|
