| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at the back [prep] [art] | 729 |
|
| 2 | [verb] at the back [prep] | 253 |
|
| 3 | [verb] the back [prep] [art] | 135 |
|
| 4 | [verb] at the [prep] [art] | 6 |
|
