import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.*;
import java.util.*;

public class SpeakingTheTongues implements Runnable {
	public static void main(String[] args) throws IOException {
		new Thread(new SpeakingTheTongues()).start();
	}

	public BufferedReader br;

	public StringTokenizer in;

	public PrintWriter out;

	public String nextToken() throws IOException {
		while (in == null || !in.hasMoreTokens()) {
			in = new StringTokenizer(br.readLine());
		}

		return in.nextToken();
	}

	public int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}

	String[] s = { "ejp mysljylc kd kxveddknmc re jsicpdrysi",
			"rbcpc ypc rtcsra dkh wyfrepkym veddknkmkrkcd",
			"de kr kd eoya kw aej tysr re ujdr lkgc jv" };
	String[] sa = { "our language is impossible to understand",
			"there are twenty six factorial possibilities",
			"so it is okay if you want to just give up" };

	char[] to = new char[300];

	public void precalc() {
		for (int i = 0; i < s.length; i++) {
			for (int j = 0; j < s[i].length(); j++) {
				to[s[i].charAt(j)] = sa[i].charAt(j);
			}
		}

		to['q'] = 'z';
		to['z'] = 'q';
	}

	public void solve() throws IOException {
		String s = br.readLine();

		for (int i = 0; i < s.length(); i++) {
			out.print(to[s.charAt(i)]);
		}

		out.println();
	}

	public void run() {
		try {
			br = new BufferedReader(new FileReader("A-small.in"));
			out = new PrintWriter("a.out");

			precalc();

			int t = nextInt();
			for (int i = 0; i < t; i++) {
				out.print("Case #" + (i + 1) + ": ");
				solve();
			}

			out.close();
		} catch (IOException e) {
			e.printStackTrace();
			System.exit(1);
		}
	}
}
