| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which goes back [prep] | 23 |
|
| 2 | which goes back [prep] | 23 |
|
| 3 | which goes back to | 16 |
|
| 4 | which goes back to | 16 |
|
| 5 | which goes back at | 5 |
|
| 6 | which goes back at | 5 |
|
