| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [be] [adj] [prep] | 10006 |
|
| 2 | happen [prep] [be] [prep] | 178 |
|
| 3 | happen [prep] [be] [adj] | 146 |
|
| 4 | happen [be] [adj] [prep] | 6 |
|
