| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it happened [prep] [be] | 28 |
|
| 2 | it happened to [be] | 28 |
|
| 3 | it happened to [be] | 28 |
|
| 4 | it happened [prep] be | 28 |
|
| 5 | it happened [prep] be | 28 |
|
| 6 | it happened [prep] [be] | 28 |
|
