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 static java.lang.System.*;

public class C
{
	// small input version
	public static String next(String x)
	{
		return x.substring(1)+x.charAt(0);
	}
	public static void main(String[] args)
	{
		Scanner sc = new Scanner(in);
		int t = sc.nextInt();
		boolean[][] match = new boolean[1001][1001];
		for (int i = 1; i <= 1000; i++)
		{
			String str = Integer.toString(i);
			for (int j = 0; j < 4; j++)
			{
				str = next(str);
				int k = Integer.parseInt(str);
				match[Math.min(i,k)][Math.max(i,k)] = true;
			}
		}
		for (int c = 1; c <= t; c++)
		{
			int u = sc.nextInt();
			int v = sc.nextInt();
			int ctr = 0;
			for (int i = u; i <= v; i++)
			{
				for (int j = i+1; j <= v; j++)
				{
					if (match[i][j])
					{
						ctr++;
					}
				}
			}
			out.printf("Case #%d: %d\n", c, ctr);
		}
	}
}

