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.FileOutputStream;
import java.io.OutputStream;
import java.util.Scanner;


public class EjercicioA {
	public static boolean prueba = false;
	public static void main(String args[]){
		
 		try {
 			FileOutputStream fos = new FileOutputStream(new File("solucion.txt"));
 			
 			OutputStream os = System.out;
 			if (!prueba)
 				os = fos;
			Scanner s = new Scanner(new File("problema.txt"));
			int a = s.nextInt();
			
			for(int i = 0; i < a; i++){			
				int limI = s.nextInt();
				int limS = s.nextInt();
				int k = 0;
				for (int j = limI; j<limS;j++){
					int e = 0;
					String p = j + "";
					do{						
						p = p.substring(p.length()-1) + p.substring(0,p.length() -1);
						e = Integer.parseInt(p);
						if (e > j && e <= limS){
							k++;
						}
					}while(e != j);
					
					
				}
				os.write(("Case #" + (i + 1) + ": " + k+  "\n").getBytes());
				
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		
	}
}
