| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be a [adj] | 4330 |
|
| 2 | happened [prep] be [adj] | 42 |
|
| 3 | happened [prep] be a | 32 |
|
| 4 | happened [prep] a [adj] | 29 |
|
