from collections import Counter


def main():
    N = int(input(), base=16)
    N_8base = format(N, "o")
    N_8base_counter = Counter(N_8base)
    common_letters = []
    for common_letter, ctr in N_8base_counter.most_common():
        if not common_letters:
            common_letters.append(common_letter)
            continue
        elif N_8base_counter[common_letters[-1]] == ctr:
            common_letters.append(common_letter)
        else:
            break
    common_letters.sort()
    print(*common_letters)


if __name__ == "__main__":
    main()