| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb pp] [prep] [noun] | 30001 |
|
| 2 | [vb pp] back [prep] [noun] | 995 |
|
| 3 | [adv] [vb pp] back [prep] | 457 |
|
| 4 | [adv] back [prep] [noun] | 434 |
|
| 5 | [adv] [vb pp] back [noun] | 18 |
|
