package Main;

import com.sun.deploy.util.ArrayUtil;
import org.apache.commons.lang3.ArrayUtils;

import java.io.*;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;

/**
 * Created with IntelliJ IDEA.
 * User: arran
 * Date: 14/04/12
 * Time: 3:12 PM
 * To change this template use File | Settings | File Templates.
 */
public class Round {
    public StringBuilder parse(BufferedReader in) throws IOException {
        StringBuilder out = new StringBuilder();
        String lineCount = in.readLine();

        for (int i = 1; i <= Integer.parseInt(lineCount); i++)
        {
            out.append("Case #"+i+": ");
            System.err.println("Case #"+i+": ");
            String line = in.readLine();
            String[] splits = line.split(" ");
            int p1 = Integer.valueOf(splits[0]);
            int p2 = Integer.valueOf(splits[1]);
            int r = pairRecyclable(p1, p2);
            out.append(r);

//            if (i < Integer.parseInt(lineCount))
                out.append("\n");
        }
        return out;
    }

    public static int pairRecyclable(int i1, int i2) {
        HashSet<String> hash = new HashSet<String>();
        for (int i = i1; i < i2; i++)
        {
            String istr = String.valueOf(i);
            if (istr.length() < 2) continue;
            for (int p = 0; p < istr.length() ; p++)
            {
                String nistr = istr.substring(p,istr.length()).concat(istr.substring(0,p));
                if (Integer.valueOf(nistr) < i1) continue;
                if (Integer.valueOf(nistr) > i2) continue;
                if (nistr.equals(istr)) continue;
                String cnistr = (Integer.valueOf(nistr) > Integer.valueOf(istr)) ?  istr + "," + nistr : nistr + "," + istr;
                hash.add(cnistr);
            }
        }
        return hash.size();
    }

    public static void main(String[] args) {
        InputStreamReader converter = null;
        try {
            int attempt = 0;
            String quest = "C";
//            String size = "small-attempt";
            String size = "large";
            converter = new InputStreamReader(new FileInputStream("src/resource/"+quest+"-"+size+".in"));
            BufferedReader in = new BufferedReader(converter);
            Round r = new Round();
            String str = r.parse(in).toString();
            System.out.print(str);
            FileOutputStream fos = new FileOutputStream(quest+"-"+size+".out");
            OutputStreamWriter osw = new OutputStreamWriter(fos);
            BufferedWriter bw = new BufferedWriter(osw);
            bw.write(str);
            bw.flush();
            bw.close();
        } catch (IOException e) {
            e.printStackTrace();
        }

    }
}

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Scanner;


public class C {
	
	public static void main(String[] args) {
		
		try {
			Scanner in = new Scanner(new File("C.in"));
			BufferedWriter writer = new BufferedWriter(new FileWriter(new File("C.out")));
			
			int T = in.nextInt();
			in.nextLine();
			
			for (int i=0; i<T; i++) {
				
				int A = in.nextInt();
				int B = in.nextInt();
				
				long res = 0;
				
				for (int X=A; X<B; X++) {
					
					int D = digits(X);
					HashSet<Integer> set = new HashSet<Integer>();
					
					for (int j=1; j<D; j++) {
						int C = moveLast(X, j);
						
						if (C > X && C <= B && !(set.contains(C))) {
							set.add(C);
							res++;
							//System.out.println("X="+X + ",     C="+C);
						}
					}
				}
				
				writer.append("Case #" + (i+1) + ": " + res + "\n");
			}
			
			writer.close();
			
		}
		catch (IOException e) {
			e.printStackTrace();
		}
	}
	
	public static int moveLast(int X, int digits) {
		
		int last = 0;
		int p = 1;
		int p2 = 1;
		
		for (int i=0; i<digits; i++) p *= 10;
		
		last = X % p;
		
		while ((p2*10)<=X) p2 *= 10;
		
		return last*(p2/p)*10 + (X / p); 
	}
	
	public static int digits(int X) {
		int k = 0;
		
		while (X > 0) {
			X /= 10;
			k++;
		}
		
		return k;
	}
}
