Revision history of "User:DorieGertrude"

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  • curprev 03:29, 5 January 2021DorieGertrude talk contribs 407 bytes +407 Created page with "2) Three identical light switches operate three identical bulbs in another room. Then switch "off" either one of the two, [https://www.liveinternet.ru/users/kyrintriston/post..."