| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back and [verb] [pron] [vb past] | 10 |
|
| 2 | back and [verb] [pers pn] [vb past] | 8 |
|
| 3 | back and [vb past] [pron] [vb past] | 6 |
|
