/*
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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.util.*;
import java.io.*;
public class Josephus {
   public static void main(String[] args)throws IOException {
     FileInputStream is = null;
     try {
       is = new FileInputStream("input.txt");
       DataInputStream in = new DataInputStream(is);
       BufferedReader br = new BufferedReader(new InputStreamReader(in));
       String str;
       int n;
       String sn;
       int m;
       String sm;
       int counter = 0;
       int loop = Integer.parseInt(br.readLine());
       ArrayList<Integer> nlist = new ArrayList<Integer>();
       ArrayList<Integer> mlist = new ArrayList<Integer>();
       
       for (int i = 0 ; i < loop ; i++)  {
         str = br.readLine();
         n = Integer.parseInt(str.substring(0,str.length()/2));
         m = Integer.parseInt(str.substring(str.length()/2+1,str.length()));
         for (int k = n ; k < m ; k++){
           String current = Integer.toString(k);
           for (int j = 0; j< current.length()-1; j++){
             char c = current.charAt(0);
             current += c;
             
             current = current.substring (1,current.length());
             int check = Integer.parseInt(current);
             if (check > k && check <= m){
               nlist.add(k);
               mlist.add(check);
              // System.out.println(k+" , "+current);
               counter++;
              }
           }
         }
         System.out.println("Case #"+(i+1)+": "+counter);
         //System.out.println(nlist);
         //System.out.println(mlist);
         counter = 0; 
       }
 
       in.close();
     }catch (Exception e){//Catch exception if any
       System.err.println("Error: " + e.getMessage());
     }
   }
}