import java.util.Scanner;

public class Main {
	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(System.in);
		char[] s = sc.next().toCharArray();
		sc.close();

		StringBuilder sb = new StringBuilder();
		for (int i = 0; i < s.length; i++) {
			int a = Integer.parseInt(String.valueOf(s[i]), 16);
			sb.append(Integer.toOctalString(a));
		}

		int[] cnt = new int[8];
		for (int i = 0; i < sb.length(); i++) {
			cnt[sb.charAt(i) - '0']++;
		}

		int max = 0;
		for (int i = 0; i < cnt.length; i++) {
			max = Math.max(max, cnt[i]);
		}

		StringBuilder sb2 = new StringBuilder();
		for (int i = 0; i < cnt.length; i++) {
			if (cnt[i] == max) {
				sb2.append(i).append(' ');
			}
		}
		sb2.deleteCharAt(sb2.length() - 1);
		System.out.println(sb2.toString());
	}
}