| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | before we [vb base] back to | 6 |
|
| 2 | before we [vb base] back to | 6 |
|
| 3 | before we [vb base] back [prep] | 6 |
|
| 4 | before we [vb base] back [prep] | 6 |
|
