/*
 * 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);
        
    }
    }
}

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

/**
 * Created by IntelliJ IDEA.
 * User: nickg
 * Date: 4/13/12
 * Time: 9:57 PM
 * To change this template use File | Settings | File Templates.
 */
public class CodeJamThree {
    public static int numNumbers(int a, int b){
        int digits = (int) Math.log10(b);
        digits++;
        Set<Integer> seen = new HashSet<Integer>();
        int total = 0;
        for(int x = a; x < b; x++){
            int pow = 10;
            seen.clear();
            for(int y = 1; y < digits; y++){
                int moved = move(x, pow);
                pow*= 10;
                if(moved <= b && moved > x)
                    seen.add(moved);
            }
            total+= seen.size();
        }
        return total;
    }

    public static int move(int src, int pow){
        int smallPart = src / pow;
        int bigPart = src % pow;
        int factor =  (int) Math.log10(smallPart) + 1;
        pow = (int) Math.pow(10, factor);
        return bigPart * pow + smallPart;
    }

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int numTrials = scanner.nextInt();
        for(int i = 0; i < numTrials; i++){
            int i1 = numNumbers(scanner.nextInt(), scanner.nextInt());
            System.out.println("Case #" + (i+1) + ": " + i1);
        }
    }
}
