import java.io.*;
import java.util.*;
import java.lang.String;
public class Main
{
	public static void main(String args[]) throws Exception
	{
		Scanner cin=new Scanner(System.in);
		String s,s2;
		char tmp;
		int i;
		s=cin.nextLine();
		s2=cin.nextLine();
		for(i=0;i<s2.length();i++)
		{
			tmp=s2.charAt(i);
			if(tmp==' ')System.out.print(' ');
			if(tmp>='a'&&tmp<='z') System.out.print(s.charAt(tmp-'a'));
			if(tmp>='A'&&tmp<='Z') System.out.print((char)(s.charAt(tmp-'A')-'a'+'A'));
		}
		System.out.println();
	}
}