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

import java.util.List;
import java.util.ArrayList;


public class Rec{
    static int rotate(int n, int l){
        int pot = (int)Math.pow(10,l-1);
        int ld = (int)Math.floor(n/pot);
        int cd = n-ld*pot;
        int ans = cd*10+ld;
        return ans;
    }
    
    static String bw(String a, int n){
        String ans = "";
        for(int i=n;i<a.length();i++)
            ans = ans + a.charAt(i);
        String ans2="";
        for(int i=0;i<a.length()-ans.length();i++)
            ans2 = ans2+a.charAt(i);
            
        System.out.println(a+"->"+ans+ans2);
        return ans+ans2;
    }

    public static int recnum(int a, int b){
        int[] test = new int[b-a+1];
        int ans = 0;
        int l=String.valueOf(a).length();

        for(int i=a;i<=b;i++){
            int c = i;
            List<Integer> reps = new ArrayList<Integer>();
            for(int j=1;j<l;j++){
                c=rotate(c,l);
                if(c<=b && c>i && String.valueOf(c).length()==l && c!=i && !reps.contains(c)){
                    ans++;
                    reps.add(c);
                    //System.out.println("("+String.valueOf(i)+","+String.valueOf(c)+")"); 
                }
            }
        }
        
        return ans;
    }

    public static void main(String[] args) throws IOException{
      BufferedReader stdin = new BufferedReader(new InputStreamReader(System.in));
      String ttt = "";
      int n = Integer.parseInt(stdin.readLine());
      int i = 1;

      while (i<=n){
        ttt = stdin.readLine();
        String[] AB = ttt.split(" ");
        int a = Integer.parseInt(AB[0]);
        int b = Integer.parseInt(AB[1]);        
        System.out.println("Case #"+String.valueOf(i++)+": "+String.valueOf(recnum(a,b)));
      }

      stdin.close();

    }
}

