/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.io.File;
import java.io.FileInputStream;
import java.util.Scanner;

/**
 *
 * @author imgps
 */
public class C {
    public static void main(String args[]) throws Exception{
        int A,B;
        int ctr = 0;
        int testCases;
        
        Scanner sc = new Scanner(new FileInputStream("C-small-attempt0.in "));
        testCases = sc.nextInt();
        int input[][] = new int[testCases][2];
        for(int i=0;i<testCases;i++)
        {
          //  System.out.print("Enter input A B: ");
            input[i][0] = sc.nextInt();
            input[i][1] = sc.nextInt();
            
        }
  

for(int k=0;k<testCases;k++){
      ctr = 0;
      A = input[k][0];
      B = input[k][1];
        for(int i = A;i<=B;i++){
            int num = i;
            int nMul = 1;
            int mul = 1; 
            int tnum = num/10;
            while(tnum > 0){
                mul = mul *10;
                tnum= tnum/10;
            }
            tnum = num;
            int n = 0;
            while(tnum > 0 && mul >= 10){
                nMul = nMul * 10;
                n = (num % nMul) * mul + (num / nMul);
                mul = mul / 10;
                tnum = tnum / 10;
                for(int m=num;m<=B;m++){
                    
                    if(n == m && m > num){
                        ctr++;
                    }
                }
                
                
                
         
            }
        }
        System.out.println("Case #"+(k+1)+": "+ctr);
        
    }
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

import java.util.*;
import java.math.*;

/**
 *
 * @author .
 */
public class C {

    public static class Num {

        int number;
        String num;
        ArrayList<Integer> recycled;

        Num(int number) {
            this.number = number;
            num = new String();
            num += number;
            recycled = new ArrayList<Integer>();
            //pl(number);
            findAllRecycleds();
        }

        void findAllRecycleds() {
            String sub;
            int subValue;
            for (int i = 1; i < num.length(); i++) {
                sub = num.substring(i, num.length()) + num.substring(0, i);
                //pl("-" + sub);
                if (sub.length() == 0 || sub.charAt(0) == '0') {
                    continue;
                }
                subValue = Integer.parseInt(sub);
                if (subValue > number) {
                    recycled.add(subValue);
                }
            }

            Collections.sort(recycled);
        }

        int countRecycleds(int max) {
            int count = 0;

            for (Integer i : recycled) {
                if (i <= max) {
                    count++;
                } else {
                    break;
                }
            }

            return count;
        }
    }

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int T = Integer.parseInt(in.nextLine());

        ArrayList<Num> array = new ArrayList<Num>(2000000);

        int MIN = 0;
        int MAX = 10000;

        for (int i = MIN; i <= MAX; i++) {
            array.add(new Num(i));

//            if (i % 10000 == 0) {
//                pl(i);
//            }
        }

        for (int kase = 1; kase <= T; kase++) {
            int A = in.nextInt();
            int B = in.nextInt();

            //----------------------------------------------------

            int count = 0;

            for (int i = A; i <= B; i++) {
                count += array.get(i).countRecycleds(B);
            }

            pl("Case #" + kase + ": " + count);
        }
    }

    public static void pf(String s, Object... o) {
        System.out.printf(s, o);
    }

    public static void pl(Object o) {
        System.out.println(o);
    }

    public static void pr(Object o) {
        System.out.print(o);
    }
}
