| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] happened [prep] [det] [noun] | 6 |
|
| 2 | [det] happened [prep] [det] [noun] | 5 |
|
| 3 | this happened [prep] [det] [noun] | 5 |
|
| 4 | this happened [prep] [det] [noun] | 5 |
|
