Problem: There is a puzzle to complete by combining 14 numbers from 1 to 9. Complete by adding another number to the given 13 numbers.

The conditions for completing the puzzle are

* You must have one combination of the same numbers.
* The remaining 12 numbers are 4 combinations of 3 numbers.
The combination of three numbers is either three of the same numbers or three consecutive numbers. However, sequences such as 9 1 2 are not considered consecutive numbers.
* The same number can be used up to 4 times.



Create a program that reads a string of 13 numbers and outputs all the numbers that can complete the puzzle in ascending order. If you cannot complete the puzzle by adding any number from 1 to 9, output 0.

For example, if the given string is 3456666777999

If there is a "2", 234 567 666 77 999
If there is a "3", then 33 456 666 777 999
If there is a "5", then 345 567 666 77 999
If there is an "8", then 345 666 678 77 999

And so on, the puzzle is complete when one of the numbers 2 3 5 8 is added. Note that "6" is fine, but it will be used for the 5th time, so it cannot be used in this example.



Input

The input consists of multiple datasets. For each dataset, 13 numbers are given on one line. The number of datasets does not exceed 50.

Output

For each dataset, the numbers that can complete the puzzle are output on one line in ascending order, separated by blanks.

Example

Input

3649596966777
6358665788577
9118992346175
9643871425498
7755542764533
1133557799246


Output

2 3 5 8
3 4
1 2 3 4 5 6 7 8 9
7 8 9
1 2 3 4 6 7 8
0

Solution (in JAVA):

Solution:
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;

public class Main{
	static final int LENGTH = 14;
	public static void main(String[] args) throws IOException{
		int[] n = new int[LENGTH];
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String input = new String();
		StringBuilder buf = null;
		/*入力があれば処理を続ける*/
		while((input = br.readLine()) != null){
			buf = new StringBuilder();
			for(int i = 1; i <= 9; i++){
				n = getArray(input);
				/*数を１つ加えてソート*/
				n[LENGTH - 1] = i;
				Arrays.sort(n);
				/*同じ数が４つ以下で正解であれば出力バッファへ*/
				if(!hasFiveSameNum(n) && solve(0, n, false)){
					buf.append(i + " ");
				}
			}
			String out = buf.toString().trim();
			System.out.println((out.equals("")? "0" : out));
		}
	}
	public static boolean solve(int p, int[] array, boolean arrayHasSameTwo){
		boolean matchable = false;
		int begin = p;
		/*文字がない場合は正解*/
		if(array.length == 0)return true;
		/*1文字しかない場合は偽*/
		if(array.length == 1)return false;
		
		while(begin < array.length - 1){
			/*２つ取り出して検証*/
			if(checkSameTwo(begin, array)){
				if(arrayHasSameTwo)	return false;
				matchable |= solve(0, subArray(begin, 2, array), true);
			}
			/*３つ取り出して検証*/
			if(checkSameThree(begin, array)){
				matchable |= solve(0, subArray(begin, 3, array), false);
			}
			int[] index = checkSequentialThree(begin, array);
			if(index != null){
				matchable |= solve(0, subArray(index, array), false);
			}
			/*上記２つの結果の和が真なら正解*/
			if(matchable)	return true;
			/*偽なら位置を１つずらす*/
			begin++;
		}
		return false;
	}
	private static boolean checkSameTwo(int begin, int[] array){
		if(begin < array.length - 1){
			return array[begin] == array[begin + 1];
		}
		return false;
	}
	private static boolean checkSameThree(int begin, int[] array){
		if(begin < array.length - 2){
			return array[begin + 1] == array[begin] &&
					array[begin + 2] == array[begin + 1];
		}
		return false;
	}
	private static int[] checkSequentialThree(int begin, int[] array){
		int[] index = new int[3];
		int c = 0;
		index[c] = begin;
		int source = array[begin];
		for(int i = begin + 1; i < array.length; i++){
			if(array[i] == source + 1){
				index[++c] = i;
				source++;
				if(c == 2)	return index;
			}
		}
		return null;
	}
	private static int[] subArray(int begin, int length, int[] array){
		int[] ary = new int[array.length - length];
		for(int i = 0; i < begin; i++){
			ary[i] = array[i];
		}
		for(int i = begin; i + length< array.length; i++){
			ary[i] = array[i + length];
		}
		return ary;
	}
	private static int[] subArray(int[] index, int[] array){
		int[] ary = new int[array.length - index.length];
		int c = 0;
		for(int i = 0; i < array.length; i++){
			if(i == index[0] || i == index[1] || i == index[2]) continue;
			ary[c++] = array[i];
		}
		return ary;
	}
	private static int[] getArray(String str){
		char[] s = str.toCharArray();
		int[] array = new int[LENGTH];
		for(int i = 0; i < s.length; i++){
			array[i] = s[i] - '0';
		}
		return array;
	}
	private static boolean hasFiveSameNum(int[] array){
		int count = 0;
		for(int i = 1; i <= 9; i++){
			count = 0;
			for(int n : array){
				if(n == i)	count++;
				if(count == 5)return true;
			}
		}
		return false;
	}

}