/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

package recycled;

import java.io.BufferedReader;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.TreeSet;

/**
 *
 * @author Alfred
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
    try {
            FileInputStream fstream = new FileInputStream("C-small-attempt0.in");
            DataInputStream in = new DataInputStream(fstream);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            FileWriter outFile = new FileWriter("out.txt");
            PrintWriter out = new PrintWriter(outFile);
            String line;
            line = br.readLine();
            int cases = Integer.parseInt(line);
            for (int i=1; i<=cases;i++){
                line = br.readLine();
                String[] values = line.split(" ");
                int A = Integer.parseInt(values[0]);
                int B = Integer.parseInt(values[1]);
                int total=0;
                for (int n=A; n<=B;n++){
                    TreeSet<String> solutions = new TreeSet<String>();
                    for (int k=1;k<values[1].length();k++){
                        String m = circshift(n,k);
                        int mVal = Integer.parseInt(m);
                        if(mVal<=B && mVal!=n  && mVal> n && !m.startsWith("0") && m.length()==Integer.toString(n).length() )
                        {
                            solutions.add(m);
                        }                   
                    }
                    total+=solutions.size();
                }
                out.println("Case #"+i+": "+total);
            }
            in.close();
            out.close();
        } catch (Exception e) {//Catch exception if any
            System.err.println("Error: " + e.getMessage());
        }

}

    private static String circshift(int n, int k) {
        String nString=Integer.toString(n);
        int len=nString.length();
        String m =  nString.substring(len-k)+nString.subSequence(0, len-k);
        //System.out.println(n+" "+m);
        return m;
    }

}

import java.io.* ;
import java.text.DecimalFormat;
import java.util.*;
import static java.lang.Math.* ;
import static java.util.Arrays.* ;

public class C {
	
	public static void main(String[] args) throws FileNotFoundException {
		
		in = new Scanner(new InputStreamReader(new FileInputStream("c_in.txt")));
		out = new PrintStream(new BufferedOutputStream(new FileOutputStream("c_out.txt")));
		
		int n = in.nextInt() ; in.nextLine() ;
		int t = 1 ;
		while( n-- > 0)
			new C().solveProblem(t++);
		
		out.close();
	}

	static Scanner in = new Scanner(new InputStreamReader(System.in));
	static PrintStream out = new PrintStream(new BufferedOutputStream(System.out));
	

	//static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
	
	
	public void solveProblem(int nr) {	
		out.print("Case #" + nr + ": " ) ;

		int A = in.nextInt() ;
		int B = in.nextInt() ;
		
		int l = ( A + "").length() ;
		
		int som = 0 ;
		for( int i = A ; i <= B ; i++ ){
			
			HashSet<Integer> set = new HashSet<Integer>() ;
			for( int j = 1 ; j < l ; j++ ){
				int n = i ;
				n /= (int) pow(10,j) ;
				n += (i % pow(10,j) )*(int) pow(10,l-j) ; 
				//System.out.println(n + " " + i);
				if( n > i && n <= B )
					set.add(n) ;
			}
			
			som += set.size();
		}
		
		out.println(som) ;
		
		System.err.println("Case #" + nr + " solved") ;
	}
	

}