/*
 * 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.
 */
package codejam;

import java.io.*;
import java.util.ArrayList;
import java.util.Scanner;

/**
 *
 * @author Ka
 */
public class Recy {
        private File file;
    private int aantal;
    private ArrayList<String> cases;
    private ArrayList<Integer> max;
    public Recy(File f) throws FileNotFoundException
    {
        file = f;
        Scanner scanner = new Scanner(new FileReader(file));
        aantal = scanner.nextInt();
        cases = new ArrayList<String>(aantal);
        max = new ArrayList<Integer>(aantal);
        scanner.nextLine();
        for(int i =0; i < aantal ; i++)
        {
            String s = scanner.nextLine();
            cases.add(s);
        }
        System.out.println(cases);
    }
    public void scores()
    {
        for(String s : cases)
        {
            int counter = 0;
            ArrayList<Integer> nb = new ArrayList<Integer>();
            String sb = "";
            while(counter < s.length())
            {
                if(s.charAt(counter)!= ' ')
                {
                    sb = sb + s.charAt(counter);
                }
                if(s.charAt(counter) == ' '&& counter != s.length()-1)
                {
                    int n = Integer.parseInt(sb);
                    nb.add(n);
                    sb = "";
                }
                counter++;
            }
            if(counter == s.length())
            {
                int n = Integer.parseInt(sb);
                nb.add(n);
                sb = "";
            }
            System.out.println(nb);
            options(nb);
        }
    }
    public void options(ArrayList<Integer>nr)
    {
        int n = nr.get(0), m = nr.get(1),amount=0;
        if(n < 10 && m < 10)
            amount = 0;
        else if(n >= 10 && n < 100&& n % 10 < 10)
        {
            for(int i = n ; i < m ; i++)
            {
                String s = Integer.toString(i);
                int g = Integer.parseInt(s);
                String s1 = s.charAt(1)+""+ s.charAt(0)+"";
                int r = Integer.parseInt(s1);
                if(g >= n && g <= m && r >= n && r <= m && g < r )
                    amount++;
            }
        }
        else if(n >= 100 && n < 1000)
        {
            for(int i = n ; i < m ; i++)
            {
                String s = Integer.toString(i);
                int g = Integer.parseInt(s);
                String s1 = s.charAt(2)+""+ s.charAt(0)+""+s.charAt(1);
                String s2 = s.charAt(1)+""+ s.charAt(2)+""+s.charAt(0);
                int r = Integer.parseInt(s1);
                int r1 = Integer.parseInt(s2);
                if(g >= n && g <= m && r >= n && r <= m && g < r )
                    amount++;
                if(r != r1)
                {
                    if(g >= n && g <= m && r1 >= n && r1 <= m && g < r1 )
                        amount++;
                }
            }
        }
        else if(n >= 1000 && n < 10000)
        {
            for(int i = n ; i < m ; i++)
            {
                String s = Integer.toString(i);
                int g = Integer.parseInt(s);
                String s1 = s.charAt(3)+""+s.charAt(0)+""+ s.charAt(1)+""+s.charAt(2);
                String s2 = s.charAt(2)+""+s.charAt(3)+""+ s.charAt(0)+""+s.charAt(1);
                String s3 = s.charAt(1)+""+s.charAt(2)+""+ s.charAt(3)+""+s.charAt(0);
                int r = Integer.parseInt(s1);
                int r1 = Integer.parseInt(s2);
                int r2 = Integer.parseInt(s3);
                if(g >= n && g <= m && r >= n && r <= m && g < r )
                    amount++;
                if(r != r1 && r1 != r2 && r != r2)
                {
                    if(g >= n && g <= m && r1 >= n && r1 <= m && g < r1 )
                        amount++;
                    if(g >= n && g <= m && r2 >= n && r2 <= m && g <= r2 )
                        amount++;
                }
            }
        }
        max.add(amount);
    }
        public void output(BufferedWriter out) throws FileNotFoundException, IOException
    {
        int counter = 1;
        for(Integer s : max )
        {
            out.write("Case #" + counter + ": ");
            out.write(s+"\n");
            counter++;
        }
        out.close();
    }
}
