| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who have returned [prep] | 53 |
|
| 2 | who had returned [prep] | 35 |
|
| 3 | who have returned to | 28 |
|
| 4 | who have returned from | 16 |
|
| 5 | who has returned [prep] | 13 |
|
