| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [vb pp] [prep] | 94249 |
|
| 2 | [verb] back [prep] | 24755 |
|
| 3 | [vb pp] back [prep] | 3389 |
|
| 4 | [verb] [vb pp] back | 1338 |
|
