
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;
import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;

public class Recycle
{
	public static void main(String[] args)
	{
/*		Set<Integer> perms = getPermutations(123456);
		
		for(Integer i: perms)
			System.out.println(i);*/
	
		try
		{
			Scanner s = new Scanner(new File("recycle.in"));
			BufferedWriter w = new BufferedWriter(new FileWriter(new File("recycle.out")));
			int numCases = s.nextInt();
			s.nextLine();
			
			for(int n = 1;n <= numCases; n++)
			{
				int A = s.nextInt();
				int B = s.nextInt();
				int count = 0;
				for(int k = A; k <= B; k++)
				{
					count += getNumPairs(k, B);
				}
				
				w.write("Case #" + n + ": " + count + "\n");
			}
			
			w.flush();
			w.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
	
	public static int getNumPairs(int n, int B)
	{
		Set<Integer> possibles = getPermutations(n);
		int count = 0;
		for(Integer i : possibles)
			if(i > n && i <= B)
				count++;
		return count;
	}
	
	public static Set<Integer> getPermutations(int n)
	{
		Set<Integer> perms = new TreeSet<Integer>();
		char[] digits = String.valueOf(n).toCharArray();
		
		for(int firstPos = 1; firstPos < digits.length; firstPos++)
		{
			String toBuild = "";
			for(int k = 0; k < digits.length; k++)
				toBuild += digits[(firstPos + k) % digits.length];
			perms.add(Integer.parseInt(toBuild));
		}
		return perms;
	}
	

}

import java.io.BufferedReader;
import java.io.FileReader;
import java.util.ArrayList;

/**
 * Problem C
 *
 * @author thomas
 */
public class RecycledNumbers {

    public static void main(String[] args) {
        String linea;
        try {
            FileReader fis = new FileReader("C-small-attempt0.in");
            BufferedReader buffer = new BufferedReader(fis);
            linea = buffer.readLine();
            int T = Integer.parseInt(linea.trim());
            int A, B;
            String[] aux;
            for (int caso = 1; caso <= T; caso++) {
                linea = buffer.readLine();
                aux = linea.split(" ");
                A = Integer.parseInt(aux[0]);
                B = Integer.parseInt(aux[1]);
                procesar(caso, A, B);
            }
            buffer.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void procesar(int caso, int A, int B) {
//        System.out.println("Case #" + caso + ": " + A + " " + B);
        int numPair = 0;
        for (int N = A; N <= B; N++) {
            numPair += pairOf(N, B);
        }
        System.out.println("Case #" + caso + ": " + numPair);
    }

    public static void main_p(String[] args) {
//        pairOf(12345);
//        pairOf(101);
    }
    
    public static int pairOf(int N, int B) {
        ArrayList<Integer> pares = new ArrayList<Integer>();
        String sN = N + "";
        //Si es un solo digito no hay par
        if (sN.length() <= 1) {
            return 0;
        }

        //Evaluamos si el numero tiene los digitos iguales
        //En este caso el par es el mismo numero
        //Y como los pares no pueden ser iguales se descarta este caso
        
        boolean sameDigit = true;
        for (int i = 1; i < sN.length() && sameDigit; i++) {
            sameDigit = sN.charAt(i - 1) == sN.charAt(i);
        }
        if (sameDigit) {
            return 0;
        }


        //Comenzamos a buscar los pares
        String N1, N2;
        int split = 1;
        int M, numPair = 0;
        while (split < sN.length()) {
            N1 = sN.substring(0, split);
            N2 = sN.substring(split);
            M = Integer.parseInt(N2 + N1);
            //Si empieza en cero, ya los digitos no concuerdan
            //O Si M es mayor que B se sale del rango
            //O si N>=M no cumple con la restriccion A â¤ n < m â¤ B 
            if ((N2.indexOf("0") == 0) || (M > B) || (N>=M)) {
                split++;
                continue;
            }
            if(!pares.contains(M)){
                pares.add(M);
            }else{
                split++;
                continue;
            }
            numPair++;
            debug(sN + " => " + M + "[" + N1 + "-" + N2 + "]");

            split++;
        }
        return numPair;
    }

    public static void debug(Object obj) {
//        System.out.println(obj);
    }
}
