| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] [prep] [adj] | 84547 |
|
| 2 | [vb pp] back [prep] | 3389 |
|
| 3 | back [prep] [adj] | 1338 |
|
| 4 | [vb pp] back [adj] | 36 |
|
