| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [art] [noun] | 12678 |
|
| 2 | back [prep] [art] [noun] | 12678 |
|
| 3 | [adv] down [art] [noun] | 985 |
|
| 4 | back down [art] [noun] | 171 |
|
| 5 | back down [art] [noun] | 171 |
|
