import java.io.*;
import java.util.*;
import java.util.stream.IntStream;

public class Main {

    static String S;

    public static void main(String[] args) {
        FastScanner sc = new FastScanner(System.in);
        S = sc.next();

        writeLines(solve());
    }

    static int[] solve() {
        List<Integer> list = new ArrayList<>();
        for (int i = 1; i <= 9; i++) {
            if( check(i) ) {
                list.add(i);
            }
        }
        return list.stream().mapToInt(i -> i).toArray();
    }

    static boolean check(int add) {
        int[] cnt = new int[10];
        for (int i = 0; i < S.length(); i++) {
            char c = S.charAt(i);
            cnt[c - '0']++;
        }

        if( cnt[add] == 4 ) return false;

        cnt[add]++;
        if( is7tt(cnt) ) return true;

        return dfs(1, cnt, false);
    }

    static boolean is7tt(int[] cnt) {
        return IntStream.of(cnt).filter(i -> i == 2).count() == 7;
    }

    static boolean dfs(int i, int[] cnt, boolean h) {
        // debug(cnt, h);
        if( i == 10 ) {
            return h;
        }

        if( cnt[i] == 0 ) {
            return dfs(i+1, cnt, h);
        }

        if( !h && cnt[i] >= 2 ) {
            cnt[i]-=2;
            boolean ok = dfs(i, cnt, true);
            if( ok ) return true;
            cnt[i]+=2;
        }

        if( cnt[i] >= 3 ) {
            cnt[i]-=3;
            boolean ok = dfs(i, cnt, h);
            if( ok ) return true;
            cnt[i]+=3;
        }

        if( i <= 7 ) {
            if( cnt[i] > 0 && cnt[i+1] > 0 && cnt[i+2] > 0 ) {
                cnt[i]--;
                cnt[i+1]--;
                cnt[i+2]--;

                boolean ok = dfs(i, cnt, h);
                if( ok ) return true;
                cnt[i]++;
                cnt[i+1]++;
                cnt[i+2]++;
            }
        }
        return false;
    }

    @SuppressWarnings("unused")
    static class FastScanner {
        private BufferedReader reader;
        private StringTokenizer tokenizer;

        FastScanner(InputStream in) {
            reader = new BufferedReader(new InputStreamReader(in));
            tokenizer = null;
        }

        String next() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        String nextLine() {
            if (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    return reader.readLine();
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken("\n");
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        int[] nextIntArray(int n) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++) a[i] = nextInt();
            return a;
        }

        int[] nextIntArray(int n, int delta) {
            int[] a = new int[n];
            for (int i = 0; i < n; i++) a[i] = nextInt() + delta;
            return a;
        }

        long[] nextLongArray(int n) {
            long[] a = new long[n];
            for (int i = 0; i < n; i++) a[i] = nextLong();
            return a;
        }
    }

    static void writeLines(int[] as) {
        PrintWriter pw = new PrintWriter(System.out);
        for (int a : as) pw.println(a);
        pw.flush();
    }

    static void writeLines(long[] as) {
        PrintWriter pw = new PrintWriter(System.out);
        for (long a : as) pw.println(a);
        pw.flush();
    }

    static void writeSingleLine(int[] as) {
        PrintWriter pw = new PrintWriter(System.out);
        for (int i = 0; i < as.length; i++) {
            if (i != 0) pw.print(" ");
            pw.print(as[i]);
        }
        pw.println();
        pw.flush();
    }

    static int max(int... as) {
        int max = Integer.MIN_VALUE;
        for (int a : as) max = Math.max(a, max);
        return max;
    }

    static int min(int... as) {
        int min = Integer.MAX_VALUE;
        for (int a : as) min = Math.min(a, min);
        return min;
    }

    static void debug(Object... args) {
        StringJoiner j = new StringJoiner(" ");
        for (Object arg : args) {
            if (arg == null) j.add("null");
            else if (arg instanceof int[]) j.add(Arrays.toString((int[]) arg));
            else if (arg instanceof long[]) j.add(Arrays.toString((long[]) arg));
            else if (arg instanceof double[]) j.add(Arrays.toString((double[]) arg));
            else if (arg instanceof Object[]) j.add(Arrays.toString((Object[]) arg));
            else j.add(arg.toString());
        }
        System.err.println(j.toString());
    }

    static void printSingleLine(int[] array) {
        PrintWriter pw = new PrintWriter(System.out);
        for (int i = 0; i < array.length; i++) {
            if (i != 0) pw.print(" ");
            pw.print(array[i]);
        }
        pw.println();
        pw.flush();
    }

    static int lowerBound(int[] array, int value) {
        int lo = 0, hi = array.length, mid;
        while (lo < hi) {
            mid = (hi + lo) / 2;
            if (array[mid] < value) lo = mid + 1;
            else hi = mid;
        }
        return lo;
    }

    static int upperBound(int[] array, int value) {
        int lo = 0, hi = array.length, mid;
        while (lo < hi) {
            mid = (hi + lo) / 2;
            if (array[mid] <= value) lo = mid + 1;
            else hi = mid;
        }
        return lo;
    }
}