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Penrose staircases

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Penrose staircases

plural of Penrose staircase

Retrieved from "https://en.wiktionary.org/w/index.php?title=Penrose_staircases&oldid=56030455"

Last edited on 17 October 2019, at 00:22

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This page was last edited on 17 October 2019, at 00:22.
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