| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | we had [to-vb] back [prep] | 10 |
|
| 2 | we had [verb] back to | 7 |
|
| 3 | we had go back [prep] | 5 |
|
| 4 | we had to go back [prep] | 5 |
|
