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 javaapplication18;

/**
 *
 * @author USER-1
 */
import java.io.*;
public class Main {

    /**
     * @param args the command line arguments
     */

    public static boolean check_recycled(int m,int n)
    {
    int rem=0,div=m;
    Integer k=new Integer(m);
    Integer k1=new Integer(n);
    String g=k.toString();
    String g1=k1.toString();
    int c=0,l=g.length(),l1=g1.length();
    while(c<l)
    {
        int w=0,ml=0;
        String temp="",temp1="";
    while(w<=c)
    {
      temp=String.valueOf(g.charAt(l-w-1))+temp;
      
      w++;
    }
     while(ml<=(l-w-1))
     {
     temp1=temp1+String.valueOf(g.charAt(ml));
     ml++;
     }
    //System.out.println(temp1);
    
    if((temp+temp1).equals(g1))
    {
return true;
    }
    c++;
    }
    return false;
    }


    public static void main(String[] args) {
        // TODO code application logic here
    
    try
    {
    BufferedReader br=new BufferedReader(new FileReader("a1.in.txt"));
    PrintWriter out=new PrintWriter(new FileWriter("out.txt"));
    int t=Integer.parseInt(br.readLine());
    int q=0;
    while(q<t)
    {
    String h[]= br.readLine().split(" ");
    int a=Integer.parseInt(h[0]);
    int b=Integer.parseInt(h[1]),n=0,m=0,p=0;
    //out.println(check_recycled(12345,34512));
    for(int i=a;i<b;i++)
    {
    n=i;
    for(int j=a+1;j<=b;j++)
    {
    m=j;
    if(m>n)
    {
     if(check_recycled(n,m))
     {
     p++;
     
     }

    }
    }
    }
    out.println("Case #"+(q+1)+":"+" "+p);
    q++;
    }
    out.flush();
    }
    catch(Exception e)
    {
    System.out.print(e.toString());


    }

    }

}
