| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] they happened to | 12 |
|
| 2 | [subord] they happened to | 9 |
|
| 3 | they happened to be | 17 |
|
| 4 | they happened to [be] | 17 |
|
| 5 | they happened to [be] | 17 |
|
| 6 | they happened to be | 17 |
|
