| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] for [noun] | 15748 |
|
| 2 | back for [noun] | 167 |
|
| 3 | [vb pp] back for | 99 |
|
| 4 | [vb pp] back [noun] | 65 |
|
