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- task = """
- Напечатать в алфавитном порядке все согласные буквы, которые входят только в одно слово.
- """
- stroka = 'namedir,bir,zat,stroka.'
- consonants = 'bcdfghjklmnpqrstvwxz'
- true_chars = []
- all_chars = []
- for word in stroka[:-1].split(','):
- for char in set(word):
- if char not in consonants: continue
- if char in all_chars:
- if char in true_chars:
- true_chars.remove(char)
- else:
- all_chars.append(char)
- true_chars.append(char)
- answer = ''.join(sorted(true_chars))
- print(answer)
- # >> bdkmnsz
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