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tr ' ' '\012' < 00ws110.txt | egrep -i '^a?b?c?d?e?f?g?h?i?j?k?l?m?n?o?p?q?r?s?t?u?v?w?x?y?z?$' | grep '......'
(00ws110.txt, the complete First Folio of Shakespeare, is in /home/corpora/english/gutenberg/etexts00.)