| perpetual motion machine of first kind | 1.07 | 0.3 | 2537 | 38 | 42 |
| perpetual motion machine of the second kind | 1.67 | 0.8 | 7344 | 43 | 41 |
| perpetual motion machine of 2nd kind | 0.77 | 0.1 | 5440 | 36 | 24 |
| perpetual machine of first kind | 0.88 | 0.3 | 517 | 31 | 27 |
| the perpetual motion machine | 1.87 | 1 | 2993 | 28 | 45 |
| perpetual motion machine 1 | 1.05 | 0.5 | 1844 | 26 | 74 |
| history of perpetual motion machines | 1.23 | 0.6 | 3227 | 36 | 35 |
| perpetual motion machine explained | 1.61 | 0.7 | 316 | 34 | 48 |
| buy perpetual motion machine | 1.17 | 0.8 | 3570 | 28 | 71 |
| perpetual motion machine amazon | 0.47 | 0.5 | 6233 | 31 | 71 |
| youtube perpetual motion machine | 0.91 | 0.2 | 5898 | 32 | 97 |
| perpetual motion machine for sale | 0.8 | 1 | 7212 | 33 | 10 |
| perpetual motion machine videos | 1.72 | 0.6 | 7958 | 31 | 45 |
| perpetual motion machine designs | 1.55 | 0.7 | 2428 | 32 | 47 |
