| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| black's classification system | 1.8 | 0.7 | 7584 | 5 | 29 |
| black's | 0.88 | 0.4 | 2965 | 12 | 7 |
| classification | 1.71 | 0.9 | 5618 | 58 | 14 |
| system | 0.16 | 0.2 | 5211 | 53 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| black's classification system | 1.13 | 0.7 | 7520 | 50 |
