| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [art] [noun] | 12678 |
|
| 2 | [adv] [prep] [art] room | 1027 |
|
| 3 | back [prep] [art] room | 134 |
|
| 4 | back [prep] [art] room | 134 |
|
