/*
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 * 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.*;

class Programa
{
	
public static long procesar(String linea)
{
	String vals[]=linea.split(" ");
	int digitos=vals[0].length();
	long a,b;
	a=Long.parseLong(vals[0]);
	b=Long.parseLong(vals[1]);
	long reciclados=0;
	
	int indi,ind = (int)(b-a+1);
	
	int parejas[][]=new int[ind][ind];
	long t=b-a+1;
	long cal;
	long v,resto,pot;
	String resu,resu2;
/*	for (long =0;l<t;l++) { 
		r[(int)l]=0;
		r[(int)l]=0;
	}*/
	for (long l=a;l<=b;l++)
        {
            ind=(int) (l-a);
   
               for (int k=1;k<digitos;k++)
               {		  
                  pot=(long) Math.pow(10,k);  		       
		  resto=l%pot;
		  v=l/pot;
		  resu=""+resto+v;     
		  cal=Long.parseLong(resu);      
   		  indi=(int) (l-a);
                  ind=(int) (cal-a);		       
	          if (cal>=a && cal<=b && cal!=l && parejas[indi][ind]==0  && parejas[ind][indi]==0 )
                  {
	   //         System.out.println(""+l+" "+cal);
		    parejas[indi][ind]=1;
              	    reciclados++;    		      
	         }
		  
            }	      
	}
	return reciclados;
}

	public static void main(String args[])
  {
  try{

  FileInputStream fstream = new FileInputStream(args[0]);
  
  DataInputStream in = new DataInputStream(fstream);
  BufferedReader br = new BufferedReader(new InputStreamReader(in));
  String strLine;
  strLine = br.readLine();
  int casos=Integer.parseInt(strLine);
  int caso=1; 	  
  long respuesta=0;	
  while ((strLine = br.readLine()) != null)   {
              respuesta=procesar(strLine);
	      System.out.println("Case #"+caso+": "+respuesta);
              caso++;
	  }
  //Close the input stream
  in.close();
    }catch (IOException e){//Catch exception if any
  System.err.println("Error: " + e.getMessage());
  }
  }
}