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use strict; ... __DATA__ aAabbbbcdDeeeeEEefFFffffffffffff zzzzzzzxxxxxxxxxyyYyg
a A a b b b b c d D e e e e E E e f F F f f f f f f f f f f f f z z z z z z z x x x x x x x x x y y Y y g ... $hash{z}: 7 Char: 'f' has the highest count: 13!