test_string=raw_input("Enter string:") l=test_string.split() d={} for word in l: if(word[0] not in d.keys()): d[word[0]]=[] d[word[0]].append(word) else: if(word not in d[word[0]]): d[word[0]].append(word) for k,v in d.items(): print(k,":",v)
var
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