| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] [prep] what happened at | 11 |
|
| 2 | [noun sg] [prep] what happened at | 7 |
|
| 3 | [verb] [prep] what happened at | 5 |
|
| 4 | [prep] what happened at [noun] | 17 |
|
| 5 | [prep] what happened at [noun prp] | 16 |
|
| 6 | [prep] what happened at [art] | 8 |
|
| 7 | [prep] what happened at [art] | 8 |
|
| 8 | [prep] what happened at the | 8 |
|
| 9 | [prep] what happened at the | 8 |
|
