What's wrong with the following code?
try:n=int(input())word=[]for _ in range(n):val=input()for i in val:if i=="'" or i=='.' or i==',' or i==';' or i==':' or i=='?':word.append(' ')else:word.append(i.lower())word.append(' ')hold=''.join(word)word=list(set(hold.split()))print(len(word))for i in sorted(word):print(i)except:pass
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