/*
 * 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.util.*;
import java.io.*;

public class template {

    private StringBuilder result = new StringBuilder();
    
    public static void main(String[] args) {
        new template().go();
    }

    public void go() {

        File inputFile = new File("/Users/amornchaikanokpullwad/Documents/input.in");
        BufferedReader br = null;

        try {
            br = new BufferedReader(new FileReader(inputFile));
            int numTests = Integer.parseInt(br.readLine());
            
            for (int testCounter = 0; testCounter < numTests; ++testCounter) {
                int count = 0;
                String text[] = br.readLine().split(" ");
                long A = Long.parseLong(text[0]);
                long B = Long.parseLong(text[1]);
                for (long i = A; i <= B; i++) {
                    for (int j = 1; j < Long.toString(i).length(); j++) {
                        //System.out.println(j + " " + i);
                        long temp = reverse(Long.toString(i),j);
                        if (temp <= i) continue;
                        if (temp <= B) {
                            System.out.println(i+"+"+B);
                            count++;
                        }
                    }
                    
                    
                    //System.out.println(i+"+"+B);
                    
                    
                    
                }
                appendResult(testCounter, count);
            }
        } catch (FileNotFoundException fe) {
            fe.printStackTrace();
        } catch (IOException ie) {
            ie.printStackTrace();
        } finally {
            try {
                if (br != null) {
                    br.close();
                }
            } catch (IOException ex) {
                ex.printStackTrace();
            }
        }
        writeResultToFile();
        System.out.println(result);
    }

    private void appendResult(int testCase, int outp) {

        result.append("Case #" + (testCase+1) + ": ");
        result.append(outp+"");

        result.append("\n");
    }

    private void writeResultToFile() {
        PrintWriter pr = null;

        try {
            pr = new PrintWriter(new File("/Users/amornchaikanokpullwad/Documents/output.in"));
            pr.print(result);

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (pr != null) {
                pr.close();
            }
        }
    }
    
    private long reverse(String in,int le){
       
        StringBuilder temp = new StringBuilder();
        for (int i = le; i > 0; i--) {
            //System.out.println(in);
            temp.append(in.charAt(in.length()-i));
            
        }
        for (int i = 0; i < in.length()-le; i++) {
            temp.append(in.charAt(i));
        }
        return Long.parseLong(temp.toString());
    }
}