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If you never thought that language could provide hours of entertainment, these "games" will definitely change your mind -- and sharpen your brain! There's the most unusual Lexicon ever, with almost no definitions, but lots of unusual facts about each word's structure -- including which common word is the most difficult to spell. And delve into fun sidebars that explain surprising aspects of language from "Pronunciation Variants" to ways you can use the same word several times in a single sentence. [via]