| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are [vb pp] at [art] expense of | 5 |
|
| 2 | are [vb pp] at [art] expense [prep] | 5 |
|
| 3 | are [vb pp] at [art] expense of | 5 |
|
| 4 | are [vb pp] at [art] expense [prep] | 5 |
|
