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A panalphabetic window is a stretch of text that contains all the letters of the alphabet in order. It is a special type of pangram or pangrammatic window. Natural-sounding panalphabetic sentences are not particularly difficult to construct; the following sequence of 132 letters by Howard Bergerson is often quoted:〔〔〔 Considerably rarer are short, naturally occurring panalphabetic windows. Based on the letter frequency distribution of a large corpus, Mike Keith calculated the expected window size for English text to be around 3000 letters. His computer-assisted search of Project Gutenberg identified the shortest natural panalphabetic window as a 535-letter passage from ''The Alkahest'', a translation of Honoré de Balzac's ''La Recherche de l'Absolu'':〔 ==See also== *Pangram *Pangrammatic window 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Panalphabetic window」の詳細全文を読む スポンサード リンク
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