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.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class Q3RecycledNumbers {

	public static void main(String[] args) throws FileNotFoundException, IOException {
		Scanner scanner = new Scanner(new File("q3.input"));
		
		FileWriter writer = new FileWriter("q3.output");
		
		int cases = scanner.nextInt();
		
		for (int i = 1; i <= cases; i++) {
			
			int a = scanner.nextInt();
			int b = scanner.nextInt();
			
			int n = solve(a, b);
			
			writer.write("Case #" + i + ": " + n + "\n");
		}
		
		writer.close();
	}

	private static int solve(int a, int b) {
		int n = 0;
		
		for (int i = b; i >= a; i--) {
			String strI = String.valueOf(i);
			Set<Integer> mirrorSet = new HashSet<Integer>();
			
			for (int j = 1; j <= strI.length(); j++) {
				String r = strI.substring(j, strI.length()) + strI.substring(0, j);
				int intR = Integer.valueOf(r);
				if (intR < i && intR >= a && !mirrorSet.contains(intR)) {
					mirrorSet.add(intR);
					n++;
				}
			}
		}
		
		return n;
	}
	
}
