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

public class ProblemC {
	public static void main(String[] args) {
		try {
			// Create file
			FileWriter fstream = new FileWriter("out.txt");
			BufferedWriter out = new BufferedWriter(fstream);
			// Close the output stream
			Scanner in = new Scanner(System.in);
			int count = in.nextInt();
			for (int i=1; i<=count; i++){
				int A = in.nextInt();
				int B = in.nextInt();
				int ret = 0;
				for (int j=A; j<B; j++){
					for (int k=j+1; k<=B; k++){
						if (areRecycledPair(j,k)) ret++;
					}
				}
				String s = "Case #" + i + ": " + ret + "\n";
				out.write(s);
			}
			
			
			
			out.close();
		} catch (Exception e) {// Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}
	
	public static boolean areRecycledPair(int A, int B){
		String a = A + "";
		String b = B + "";
		for (int i=0; i<a.length(); i++){
			a = a.charAt(a.length()-1) + a.substring(0,a.length() - 1);
			if (a.equals(b)) return true;
		}
		return false;
	}
}

