import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam2012;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.io.PrintWriter;

/**
 *
 * @author malgia
 */
public class Recycled {

    /**
     * @param args the command line arguments
     */
public static void main(String[] args) {
        Integer number=0;
        Integer total=0;
        Integer a,b;
        String numbers[];
        Integer result;
        String current;
        String pair;
        String previous;
        try{
        BufferedReader fin=new BufferedReader(new InputStreamReader(new FileInputStream(new File("C-small-attempt1.in"))));
        PrintWriter fout = new PrintWriter (new BufferedWriter (new FileWriter ("C-small-attempt1.out")));
        total=Integer.parseInt(fin.readLine());
        for (int i=0;i<total;i++){
            result=0;
            previous="1,1";
            numbers=fin.readLine().split(" ");
            a=Integer.parseInt(numbers[0]);
            b=Integer.parseInt(numbers[1]);
            if (b>9) {
            for(int j=a;j<=b;j++){
                current=j+"";
                for(int k=1; k<current.length(); k++){
                    pair=current.substring(k)+current.substring(0,k);
                    if(pair.startsWith("0") || current.startsWith("0")){
                        continue;
                    }
                    if(Integer.parseInt(pair)<=b && Integer.parseInt(pair)>Integer.parseInt(current) && Integer.parseInt(current)>=a && previous.compareTo(current+","+pair)!=0){
                        result++;
                        previous=current+","+pair;
                    }
                }
            }
            }
            number=i+1;
            fout.println("Case #"+number+": "+result);
        }
        fin.close();
        fout.close();
        }catch(Exception e){
            System.out.println(e.toString());
        }
    }
}
