| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [art] cost | 799 |
|
| 2 | at [art] cost | 799 |
|
| 3 | at a cost | 517 |
|
| 4 | at a cost | 517 |
|
| 5 | at the cost | 243 |
|
| 6 | at the cost | 243 |
|
| 7 | at no cost | 39 |
|
| 8 | at no cost | 39 |
|
