| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [art] [noun] | 2601364 |
|
| 2 | back [prep] [art] | 16466 |
|
| 3 | back [prep] [noun] | 10787 |
|
| 4 | back [art] [noun] | 1640 |
|
