| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] it happened to be | 15 |
|
| 2 | [subord] it happened to be | 9 |
|
| 3 | because it happened to be | 5 |
|
| 4 | because it happened to be | 5 |
|
| 5 | [coord] it happened to be | 5 |
|
