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 googlecodejam2012;

import java.io.*;
import java.util.HashSet;

/**
 *
 * @author Stephen
 */
public class GoogleCodeJam2012Num3 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        try 
        {
            FileInputStream fs = new FileInputStream("input.txt");
            DataInputStream in = new DataInputStream(fs);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            FileWriter fws = new FileWriter("output.txt");
            BufferedWriter out = new BufferedWriter(fws);
            String numLine = br.readLine();
            System.out.println(numLine);
            int numCases = Integer.parseInt(numLine);
            String caseLine;
            for(int i = 1; i <= numCases; i++)
            {
                caseLine = br.readLine();
                System.out.println("Case #"+i);
                String[] splitted = caseLine.split(" ");
                int A = Integer.parseInt(splitted[0]);
                int B = Integer.parseInt(splitted[1]);
                System.out.println(A+" <= n < m <= "+B);
                int numLength = String.valueOf(A).length();
                System.out.println("Length of number: "+numLength);
                int powerThing = 1;
                for(int a = 1; a < numLength; a++)
                    powerThing*=10;
                System.out.println("Power Multiplier: "+powerThing);
                int numPairs = 0;
                for(int n = A; n < B; n++)
                {
                    int m = n;
                    HashSet<Integer> ht = new HashSet<Integer>();
                    for(int k = 0; k < numLength; k++)
                    {
                        int rem = m%10;
                        m = m/10+rem*powerThing;
                        if(m <= B && m > n && !ht.contains(m))
                        {
                            ht.add(m);
                            numPairs++;
                        }
                    }
                }
                System.out.println("Pairs: "+numPairs);
                out.write("Case #"+i+": "+numPairs+"\r\n");
            }
            in.close();
            out.close();
            
            displayOutput();
        } 
        catch (Exception e) 
        {
            System.err.println("Oops! Error occured: " + e.getMessage());
        }
    }
    
    public static String gDecode(String input)
    {
        String decoded = "";
        for(int i = 0; i < input.length(); i++)
        {
            if(input.charAt(i) == ' ')
                decoded += ' ';
            else
                decoded += decodeChar(input.charAt(i)-'a');
        }
        return decoded;
    }
    
    public static String googleKey = "yhesocvxduiglbkrztnwjpfmaq";
    
    public static char decodeChar(int encoded)
    {
        return googleKey.charAt(encoded);
    }
    
    public static void displayOutput()
    {
        System.out.println("START OUTPUT\n-------------------");
        try
        {
            FileInputStream fs = new FileInputStream("output.txt");
            DataInputStream in = new DataInputStream(fs);
            BufferedReader br = new BufferedReader(new InputStreamReader(in));
            String readLine;
            while ((readLine = br.readLine()) != null)   {
                System.out.println(readLine);
            }
        }
        catch (Exception e) 
        {
            System.err.println("Oops! Error occured: " + e.getMessage());
        }
        System.out.println("---------------------\nEND OUTPUT");
    }
}
