| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | back [prep] [art] [noun] | 12678 |
|
| 2 | seat [prep] [art] [noun] | 1131 |
|
| 3 | back seat [prep] [art] | 8 |
|
| 4 | back seat [prep] [noun] | 6 |
|
