| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh pn] have [vb pp] to [noun prp] | 130 |
|
| 2 | have [vb pp] back to [noun prp] | 71 |
|
| 3 | [Wh pn] have [vb pp] back to | 15 |
|
