| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | since if | 57 |
|
| 2 | since before | 28 |
|
| 3 | since as | 23 |
|
| 4 | since although | 17 |
|
| 5 | since because | 6 |
|
| 6 | since once | 5 |
|
| 7 | since while | 5 |
|
