/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package gcj;

import java.io.File;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author daniele
 */
public class GCJ_C {
    
    public static void main(String[] args) throws Exception{
        
        
        
        Scanner in = new Scanner(new File(args[0]));
        FileWriter out = new FileWriter("/home/daniele/Scrivania/Output");
        

        int prove=in.nextInt();
        int min,max;
        int cifre;
        int cifreaus;
        String temp;
        int aus;
        int count=0;
        ArrayList<Integer> vals = new ArrayList<Integer>();
        int jcount=0;
        ArrayList<Integer> perm = new ArrayList<Integer>();
        
        out.write("");
        out.flush();
        
        for(int i=1;i<=prove;i++){
            
            out.append("Case #" +i+": ");out.flush();
            
            min=in.nextInt();
            max=in.nextInt();
            
            for(int j=min;j<=max;j++){
               if(!vals.contains(j)){
                    temp=""+j;
                    cifre=temp.length();
                    aus=j;
                    perm.add(j);
                    for(int k=1;k<cifre;k++){
                        aus=rotateOnce(aus);
                        temp=""+aus;
                        cifreaus=temp.length();//elusione zeri iniziali
                        if(aus>=min && aus<=max && aus!=j && cifreaus==cifre && nobody(vals,perm)){ 
                            perm.add(aus);
                            jcount ++;
                            
                        }
                        
                    }
                    while(jcount>0){count+=jcount; jcount--;}
                    vals.addAll(perm);
                    perm= new ArrayList<Integer>();
                    
                }
            }
            out.append(count+"\n");out.flush();
            count=0;
            vals= new ArrayList<Integer>();
        }
        
        
        
    }
        static public int rotateOnce(int n){
            String s=""+n;
            if(s.length()>1){
                s=s.charAt(s.length()-1) + s.substring(0,s.length()-1);
                n=Integer.parseInt(s);
            }
            return n;
        }    
        
        static public boolean nobody(ArrayList<Integer> v,ArrayList<Integer> a){;
            for(int i=0;i<a.size();i++)
                if(v.contains(a.get(i))) return false;
            return true;
        } 
    
}




import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class SmallMain 
{
	public static void main( String arg[] )
		throws IOException
	{
		BufferedReader reader = new BufferedReader( new InputStreamReader( System.in ) );
		String line = null;
		int test = 0;
		int testCases = 0;
		while( ( line = reader.readLine() ) != null && test <= testCases )
		{
			if( line != null && !line.isEmpty() )
			{
				String tokens[] = line.split( " " );
				if( tokens.length == 1 && testCases == 0 )
				{
					testCases = Integer.parseInt( tokens[ 0 ] );
				}
				else if( tokens.length == 2 )
				{
					++test;
					int start = Integer.parseInt( tokens[ 0 ] );
					int end = Integer.parseInt( tokens[ 1 ] );
					int counter = 0;
					for( int i = start; i <= end; ++i )
					{
						for( int j = start; j <= end; ++j )
						{
							if( i < j )
							{
								for( int s = 1; s < ( "" + j ).length(); ++s )
								{
									if( i == moveDigits( j, s ) )
									{
										++counter;
										break;
									}
								}
							}
						}
					}
					System.out.println( "Case #" + ( test ) + ":  "+ counter );
				}
				else
				{
					System.out.println( "Invalid length: " + tokens.length + " line: " + line );
				}
			}
		}
		reader.close();
	}
	
	private static int moveDigits( int number, int digits )
	{
		int r;
		String n = "" + number;
		String end = n.substring( n.length() - digits );
		String start = n.substring( 0, n.length() - digits );
	//	System.out.println( "N: " + number + " d: " + digits + " start: " + start + " end: " + end );
		r = Integer.parseInt( end + start );
		return r;
	}
}
