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;
	}
}


import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;

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

/**
 *
 * @author Karim
 */
public class RecycledNumbers {

    public static boolean checkNumbers(int n, int m){
        String x=""+n;
        String y=""+m;
        for (int i=0;i<x.length()-1;i++){
            String temp=""+x.charAt(x.length()-1);
            String rest=x.substring(0,x.length()-1);
            temp+=rest;
            x=""+temp;
            if (temp.equals(y)){
                return true;
            }
        }
        return false;
    }
    
    public static int range(int a, int b){
        int counter=0;
        for (int i=a;i<b;i++){
            for (int j=(i+1);j<=b;j++){
                if (checkNumbers(i, j)==true)
                    counter++;
            }
        }
        return counter;
    }
    
    public static void main(String[] args) throws FileNotFoundException {
        Scanner r=new Scanner(System.in);
        String s=r.nextLine();
        PrintWriter out=new PrintWriter("RecycledNumbers.out");
        int t=Integer.parseInt(s);
        for (int i=0;i<t;i++){
            String start=r.next();
            String end=r.next();
            int number=range(Integer.parseInt((start)), Integer.parseInt(end));
            out.write("Case #"+(i+1)+": "+number+"\n");
            out.flush();
//            System.out.println("Case #"+(i+1)+": "+number);
        }
    }
}
