| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] happened to be [prep] | 12 |
|
| 2 | who happened to be [prep] | 12 |
|
| 3 | [Wh pn] happened to be in | 9 |
|
| 4 | [Wh pn] happened to be in | 9 |
|
