| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] to [be] | 91837 |
|
| 2 | [vb infin] to [be] | 13196 |
|
| 3 | happen to [be] | 1101 |
|
| 4 | happen [prep] [be] | 34 |
|
