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


public class probC {
	public static void main (String args[]) throws IOException
	{
		BufferedReader in = new BufferedReader(new FileReader("C:\\downloads\\c-small-attempt0.in"));
		BufferedWriter out = new BufferedWriter(new FileWriter("C:\\downloads\\c-small-output.in"));
		int t = Integer.parseInt(in.readLine());
		int i,j,k,l;
		int A,B;
		int len;
		int count;
	    for (i=1;i<=t;i++)
		{ StringTokenizer st = new StringTokenizer(in.readLine());
		  A = Integer.parseInt(st.nextToken());
		  B = Integer.parseInt(st.nextToken());
		  count=0;
		  len = String.valueOf(A).length();
		  int[] temp =  new int[len];
		  for (j=A;j<=B;j++)
		  { String n;
		    n = String.valueOf(j);
		    
		    for (k=0;k<len-1;k++)
		    { int flag=0;
		      temp[k] = Integer.parseInt(n);
		      StringBuilder sb = new StringBuilder();
		    	for (l=1;l<len;l++)		         
		          sb.append(n.charAt(l));
		    	sb.append(n.charAt(0));
		    	int y = Integer.parseInt(sb.toString());
		    	for (int x : temp)
		    		if (x==y)
		    		{ flag=1;
		    		  break;
		    		}
		    	if ((flag==0) && (y>j) && (y<=B))
		    			count++;
		    	n = sb.toString();
		  }
		    }
		out.write("Case #"+i+": "+count);
		out.newLine();
		  
		}
		  out.close();
	}

}
