/*
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 * and open the template in the editor.
 */
package gcj;

import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author daniele
 */
public class GCJ_C {
    
    public static void main(String[] args) throws Exception{
        
        
        
        Scanner in = new Scanner(new File(args[0]));
        FileWriter out = new FileWriter("/home/daniele/Scrivania/Output");
        

        int prove=in.nextInt();
        int min,max;
        int cifre;
        int cifreaus;
        String temp;
        int aus;
        int count=0;
        ArrayList<Integer> vals = new ArrayList<Integer>();
        int jcount=0;
        ArrayList<Integer> perm = new ArrayList<Integer>();
        
        out.write("");
        out.flush();
        
        for(int i=1;i<=prove;i++){
            
            out.append("Case #" +i+": ");out.flush();
            
            min=in.nextInt();
            max=in.nextInt();
            
            for(int j=min;j<=max;j++){
               if(!vals.contains(j)){
                    temp=""+j;
                    cifre=temp.length();
                    aus=j;
                    perm.add(j);
                    for(int k=1;k<cifre;k++){
                        aus=rotateOnce(aus);
                        temp=""+aus;
                        cifreaus=temp.length();//elusione zeri iniziali
                        if(aus>=min && aus<=max && aus!=j && cifreaus==cifre && nobody(vals,perm)){ 
                            perm.add(aus);
                            jcount ++;
                            
                        }
                        
                    }
                    while(jcount>0){count+=jcount; jcount--;}
                    vals.addAll(perm);
                    perm= new ArrayList<Integer>();
                    
                }
            }
            out.append(count+"\n");out.flush();
            count=0;
            vals= new ArrayList<Integer>();
        }
        
        
        
    }
        static public int rotateOnce(int n){
            String s=""+n;
            if(s.length()>1){
                s=s.charAt(s.length()-1) + s.substring(0,s.length()-1);
                n=Integer.parseInt(s);
            }
            return n;
        }    
        
        static public boolean nobody(ArrayList<Integer> v,ArrayList<Integer> a){;
            for(int i=0;i<a.size();i++)
                if(v.contains(a.get(i))) return false;
            return true;
        } 
    
}


import java.util.*;
import java.io.*;
class Caso{
	int a;
	int b;
	public void leer(Scanner s){
		a=s.nextInt();
		b=s.nextInt();
	}
	public Caso(){
	}
	public String obtenerRespuesta(){
		long resultado=0;
		for(int i=a;i<=b;i++){
			int j=1;
			int nd=(int)Math.log10(i)+1;
			HashMap<Integer,Integer>h=new HashMap<Integer,Integer>();
			while(j<nd){
				int d=(int)Math.pow(10,j);
				int r=i%d;
				int sg=(i-r)/d;
				int mt=(int)(r*Math.pow(10,nd-j))+sg;
				if(h.get(mt)==null&&i<mt&&mt<=b){
					h.put(mt,1);
					resultado++;
				}
				j++;
			}
		}
		return resultado+"";
	}
}
public class Caso1{
	public void iniciar(){
		Scanner s=null;
		PrintStream ps=null;
		try{
			ps=new PrintStream(new FileOutputStream(new File("output.txt")));
			s=new Scanner(new FileReader("input.txt"));
			StringBuffer entrada=new StringBuffer();
			while(s.hasNextLine()){
				entrada.append(s.nextLine()+"\n");
			}
			s=new Scanner(entrada+"");
		}catch(Exception e){
			e.printStackTrace();
		}
		int numeroCasos=s.nextInt();
		Caso[]casos=new Caso[numeroCasos];
		for(int i=0;i<numeroCasos;i++){
			casos[i]=new Caso();
		}
		for(int k=0;k<numeroCasos;k++){
			casos[k].leer(s);
		}
		for(int i=0;i<casos.length;i++){
			ps.println("Case #"+(i+1)+": "+casos[i].obtenerRespuesta());
		}
	}
	public static void main(String[]args){
		(new Caso1()).iniciar();
	}
}