| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| why are the penrose stairs impossible | 1.67 | 0.2 | 6687 | 38 | 37 |
| why | 0.41 | 0.8 | 5798 | 85 | 3 |
| are | 1.01 | 0.3 | 8505 | 74 | 3 |
| the | 1.57 | 0.6 | 5806 | 83 | 3 |
| penrose | 0.16 | 0.9 | 2397 | 44 | 7 |
| stairs | 0.4 | 0.6 | 3420 | 27 | 6 |
| impossible | 1.4 | 0.2 | 8549 | 56 | 10 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| why are the penrose stairs impossible | 0.12 | 0.6 | 9503 | 66 |
| penrose stairs in real life | 1.52 | 0.4 | 8152 | 13 |
| penrose stair yahoo answers | 1.11 | 0.2 | 7683 | 38 |
| how to make penrose stairs | 0.68 | 0.4 | 2195 | 1 |
| penrose stairs illusion explained | 0.76 | 0.8 | 3221 | 8 |
| penrose stairs 3d model | 0.05 | 0.9 | 6260 | 12 |
| penrose triangle in real life | 1.24 | 0.8 | 6443 | 54 |
| sir roger penrose life after death | 0.4 | 0.1 | 6507 | 36 |
| roger penrose on death | 0.94 | 0.8 | 4362 | 46 |
| roses by the stairs | 1.35 | 0.8 | 4445 | 13 |
