| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to be [vb pp] | 30391 |
|
| 2 | happen to be [verb] | 216 |
|
| 3 | happen to [be] [vb pp] | 67 |
|
| 4 | happen [prep] be [vb pp] | 67 |
|
