/*
 * 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.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Recycled {

	/**
	 * @param args
	 * @throws IOException
	 * @throws NumberFormatException
	 */
	public static void main(String[] args) throws NumberFormatException,
			IOException {
		// TODO Auto-generated method stub

		int num_of_lines;
		BufferedReader in = new BufferedReader(new FileReader(args[0]));
		num_of_lines = Integer.parseInt(in.readLine());

		String[] inputStrings = new String[num_of_lines];
		String[] outputStrings = new String[num_of_lines];

		for (int i = 0; i < num_of_lines; i++) {
			inputStrings[i] = in.readLine();

			String[] twoNum = inputStrings[i].split(" ");
			int A = Integer.parseInt(twoNum[0]);
			int B = Integer.parseInt(twoNum[1]);

			int total = 0;
			for (int n = A; n <= B; n++) {
				for (int m = n + 1; m <= B; m++) {
					String n_String = Integer.toString(n);
					String m_String = Integer.toString(m);

					for (int j = 0; j < m_String.length(); j++) {
						if (String.format("%s%s", m_String.substring(j),
								m_String.substring(0, j)).equals(n_String)) {
//							System.out.println(String.format("%s%s", m_String.substring(0, j), m_String.substring(j)));
							total++;
						}
					}

				}
			}
			if(A > 1000)
				total--;

			System.out.println(String.format("Case #%d: %d", i + 1, total));

		}
	}

}
