| history of perpetual motion machines | 1.95 | 0.1 | 5644 | 36 | 87 |
| perpetual motion machine of the first kind | 0.4 | 0.2 | 7018 | 42 | 51 |
| the perpetual motion machine | 0.76 | 0.7 | 8257 | 28 | 51 |
| perpetual motion machines for sale | 1.56 | 0.4 | 6082 | 34 | 86 |
| perpetual motion machines videos | 1.24 | 0.2 | 365 | 32 | 37 |
| perpetual motion machine explained | 0.66 | 0.8 | 183 | 34 | 80 |
| perpetual motion machines youtube | 0.68 | 0.3 | 9804 | 33 | 55 |
| perpetual motion machine patent | 1.52 | 1 | 2067 | 31 | 7 |
| perpetual motion machine england | 1.48 | 0.8 | 4019 | 32 | 68 |
| buy perpetual motion machine | 1.81 | 0.9 | 3140 | 28 | 33 |
| perpetual motion machine designs | 1.81 | 0.7 | 7553 | 32 | 91 |
| does a perpetual motion machine exist | 1.97 | 0.2 | 4512 | 37 | 98 |
| youtube perpetual motion machine | 1.59 | 0.9 | 3154 | 32 | 67 |
| perpetual motion machine amazon | 1.96 | 0.7 | 4689 | 31 | 28 |
| perpetual motion machine 1 | 0.91 | 0.1 | 6996 | 26 | 40 |
| working perpetual motion machine | 1.07 | 0.6 | 7243 | 32 | 96 |
