| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] happened [prep] [art] [adj] time | 5 |
|
| 2 | [verb] happened at [art] [adj] time | 5 |
|
| 3 | [verb] happened at [art] [adj] time | 5 |
|
| 4 | have happened [prep] [art] [adj] time | 5 |
|
| 5 | [verb] happened [prep] [art] [adj] time | 5 |
|
