| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [subord] [pron] [verb] [adv] | 889 |
|
| 2 | back [subord] [pron] [verb] [adv] | 53 |
|
| 3 | back [prep] [subord] [pron] [verb] | 25 |
|
| 4 | back [prep] [pron] [verb] [adv] | 15 |
|
