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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.*;
import java.util.*;

public class recycle{
    static class pair{
        int a,b;
        @Override
        public int hashCode(){ return a^b;}
        @Override
        public boolean equals(Object o){
            pair p = (pair)o;
            return p.a == a && p.b == b;
        }
    }

    public static void main(String args[]) throws Exception{
        Scanner s=  new Scanner(System.in);
        int nu= s.nextInt(); s.nextLine();
        int casen=1;while (nu-->0){
        
            int A = s.nextInt(); int B = s.nextInt(); 
                try{s.nextLine();}catch(Exception e){}
            Set<pair> pairs = new HashSet<pair>();
            long num=0;
            for (int i= A; i <=B;i++){
                int k=i;
                int digits = 0; int mult = 1;
                while (k>0){ digits++; k/=10; mult *= 10; }

                k=i; int sum = 0; 
                int m2 = 1;
                while (k>0){
                    sum += m2*(k%10);
                    boolean zero =k%10 == 0;
                    mult/=10;
                    k/=10;
                    int a = i;
                    int b = sum*mult+k;
                    if (!zero && b >= A && b <= B && a!=b){
                            pair p = new pair();
                            p.a = b; 
                            p.b = i;
                        if(!pairs.contains(p)) {
                            p.a = i; p.b=b;
                            if (!pairs.contains(p)){
                            num++;pairs.add(p);
                         //   System.out.println(p.a + "-"+p.b);
                            }
                        }
                    }
                    m2*=10;
                }
            }
            System.out.println("Case #"+casen++ +": "+ num);
       } 
    }
}
