| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [verb] [adv] [vb pp] back from | 5 |
|
| 2 | [Wh pn] [verb] [adv] [vb pp] back from | 5 |
|
| 3 | [Wh pn] have [adv] [vb pp] back from | 5 |
|
