Counter Remove duplicates and return the frequency.Counter('mississippi')>>>Counter({'m': 1, 'i': 4, 's': 4, 'p': 2})Counter(list('mississippi'))>>>Counter({'m': 1, 'i': 4, 's': 4, 'p': 2}) most_common most_common(n)Return a list of the n most common elements and their counts.Counter('abracadabra').most_common(3)>>>[('a', 5), ('b', 2), ('r', 2)] FreqDist Frequency Di..