| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] [prep] a | 701 |
|
| 2 | back [adv] [prep] a | 94 |
|
| 3 | back [prep] [adv] [prep] | 67 |
|
| 4 | back [prep] [adv] a | 18 |
|
| 5 | back [prep] [prep] a | 10 |
|
