| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] at [noun pl] ' expense | 5 |
|
| 2 | at [art] [noun pl] ' expense | 20 |
|
| 3 | at [art] [noun pl] ' expense | 20 |
|
| 4 | at the [noun pl] ' expense | 20 |
|
| 5 | at the [noun pl] ' expense | 20 |
|
