| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [adv] [conj] [pron] [vb past] | 7 |
|
| 2 | back [prep] [adv] [conj] [pers pn] [vb past] | 7 |
|
| 3 | back [prep] [adv] [conj] [pron] [vb past] | 7 |
|
| 4 | back [prep] [adv] [subord] [pron] [vb past] | 5 |
|
