| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who just happen [prep] be | 10 |
|
| 2 | who just happen to be | 10 |
|
| 3 | who just happen to be | 10 |
|
| 4 | who just happen [prep] be | 10 |
|
| 5 | who just happened [prep] be | 6 |
|
