| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who happened to be [verb] [prep] | 7 |
|
| 2 | who happened to be [v-ing] [prep] | 6 |
|
| 3 | who happened to be [prep] [art] | 7 |
|
| 4 | who happened to be [prep] [art] | 7 |
|
| 5 | who happened to be [prep] the | 6 |
|
| 6 | who happened to be [prep] the | 6 |
|
