| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have occurred at | 17 |
|
| 2 | [noun sg] [vb past] occurred at | 9 |
|
| 3 | [noun sg] had occurred at | 9 |
|
| 4 | [noun sg] [vb -s] occurred at | 8 |
|
| 5 | [noun sg] has occurred at | 8 |
|
