| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we have [verb] back to | 16 |
|
| 2 | we have [to-vb] back [prep] | 15 |
|
| 3 | we have [vb pp] back [prep] | 5 |
|
| 4 | we have go back [prep] | 5 |
|
