>>> count_rep(['aeiou', 'aaeeiioouu', 'aaeiou', 'aeiouu']) 3 >>> count_rep(['warned', 'after', 'each', 'of', 'us', 'safely', 'reaching', 'home']) 0 >>> count_rep(['Shall', 'I', 'compare', 'thee', 'to', 'a', "summer's", 'day']) 3 >>> count_rep([]) 0 >>> count_rep(['Thou', 'art', 'more', 'lovely', 'and', 'more', 'temperate']) 2