import java.util.*;
import java.lang.*;
import java.io.*;

public class Main
{
	public static void main (String[] args) throws java.lang.Exception
	{
		//your code here
                Scanner sc=new Scanner(System.in);
                String s=sc.next();
                char []arr = s.toCharArray();

                for(int i=0; i<s.length(); i++){
                        char ch=arr[i];
                        if(ch=='a'||ch=='e'||ch=='i'||ch=='o'||ch=='u'||ch=='A'||ch=='E'||ch=='I'||ch=='O'||ch=='U')
                                continue;
                        else{
                                if(Character.isUpperCase(arr[i]))
                                        arr[i] = Character.toLowerCase(ch);
                                else
                                        arr[i] = Character.toUpperCase(ch);
                        }
                }
                System.out.println(String.valueOf(arr));
	}
}