C3123121111113313121111331333131211111333131133132233133313211221   >>    C312312111111331312111133133313121111133313113313223313331321122   <<    C3123121111113313121111331333131211111333131133132233133313211223   >>      C3123121111113313121111331333131211111333131133132233133313211222   >>