import java.util.Arrays;import java.util.Scanner;public class Main {	public static void main(String[] args) {		Scanner input = new Scanner(System.in);		while(input.hasNext()){			String str = input.next();			char []arr = new char[str.length()];			arr = order(str);			for(int i=0; i<arr.length; ++i){				if(i!=arr.length-1)					System.out.PRint(arr[i]+" ");				else					System.out.println(arr[i]);			}		}	}		public static char[]order(String str){		char[] ch = str.toCharArray();		Arrays.sort(ch);		return ch;	}}