| very accurate (18.9.2024 19:05) | |
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| jedu (18.9.2024 18:59) | |
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| Louis Brennan's gyroscopic monorail (18.9.2024 18:38) | |
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| cool trick (18.9.2024 18:32) | |
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| meanwhile in Portugal (18.9.2024 18:30) | |
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