| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | a [noun sg] [verb] at the | 393 |
|
| 2 | a [noun sg] at the back | 119 |
|
| 3 | [noun sg] [verb] at the back | 49 |
|
| 4 | a [noun sg] [verb] the back | 7 |
|
