| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [prep] a | 12460 |
|
| 2 | [vb base] back [prep] | 2703 |
|
| 3 | back [prep] a | 1574 |
|
| 4 | [vb base] back a | 69 |
|
