package jp.funnything.competition.util;

import java.math.BigInteger;

/**
 * Utility for BigInteger
 */
public class BI {
    public static BigInteger ZERO = BigInteger.ZERO;
    public static BigInteger ONE = BigInteger.ONE;

    public static BigInteger add( final BigInteger x , final BigInteger y ) {
        return x.add( y );
    }

    public static BigInteger add( final BigInteger x , final long y ) {
        return add( x , v( y ) );
    }

    public static BigInteger add( final long x , final BigInteger y ) {
        return add( v( x ) , y );
    }

    public static int cmp( final BigInteger x , final BigInteger y ) {
        return x.compareTo( y );
    }

    public static int cmp( final BigInteger x , final long y ) {
        return cmp( x , v( y ) );
    }

    public static int cmp( final long x , final BigInteger y ) {
        return cmp( v( x ) , y );
    }

    public static BigInteger div( final BigInteger x , final BigInteger y ) {
        return x.divide( y );
    }

    public static BigInteger div( final BigInteger x , final long y ) {
        return div( x , v( y ) );
    }

    public static BigInteger div( final long x , final BigInteger y ) {
        return div( v( x ) , y );
    }

    public static BigInteger mod( final BigInteger x , final BigInteger y ) {
        return x.mod( y );
    }

    public static BigInteger mod( final BigInteger x , final long y ) {
        return mod( x , v( y ) );
    }

    public static BigInteger mod( final long x , final BigInteger y ) {
        return mod( v( x ) , y );
    }

    public static BigInteger mul( final BigInteger x , final BigInteger y ) {
        return x.multiply( y );
    }

    public static BigInteger mul( final BigInteger x , final long y ) {
        return mul( x , v( y ) );
    }

    public static BigInteger mul( final long x , final BigInteger y ) {
        return mul( v( x ) , y );
    }

    public static BigInteger sub( final BigInteger x , final BigInteger y ) {
        return x.subtract( y );
    }

    public static BigInteger sub( final BigInteger x , final long y ) {
        return sub( x , v( y ) );
    }

    public static BigInteger sub( final long x , final BigInteger y ) {
        return sub( v( x ) , y );
    }

    public static BigInteger v( final long value ) {
        return BigInteger.valueOf( value );
    }
}

import java.io.*;
import java.util.*;
import java.awt.*;
import static java.lang.System.*;

public class C {
	public static void main (String [] args) throws IOException {new C().run();}
	public void run() throws IOException{
		Scanner file = new Scanner(new File("C-small-attempt0.in"));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("C.out")));
		
		int times = file.nextInt();
		for(int asdf = 0; asdf<times; asdf++){
			int a = file.nextInt(), b = file.nextInt();
			HashSet<Point> set = new HashSet<Point>();
			for(int i = a; i<=b; i++){
				String s = ""+i;
				for(int j = 1; j<s.length(); j++){
					if( s.charAt(j) >= s.charAt(0) ){
						int x = Integer.parseInt(s.substring(j,s.length()) +s.substring(0,j));
						if( i<x && x<=b ){set.add(new Point(i,x));
						//System.out.println (i +" " + x);
						}
					}
				}
			}
			out.println("Case #"+(asdf+1)+": "+set.size());
		}
		out.close();
		System.exit(0);
	}
}