| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who had [adv] [vb pp] back [prep] | 5 |
|
| 2 | [Wh pn] had [adv] [vb pp] back [prep] | 5 |
|
| 3 | [Wh pn] had [adv] [vb pp] back [prep] | 5 |
|
| 4 | [Wh pn] had [adv] come back [prep] | 5 |
|
