| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [vb pp] at [art] cost | 16 |
|
| 2 | been [vb pp] at the cost | 8 |
|
| 3 | been [vb pp] at a cost | 7 |
|
| 4 | been bought at [art] cost | 5 |
|
