import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

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

import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 *
 * @author KazakhPride
 */
public class Main {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        // TODO code application logic here
        Scanner in = new Scanner(new File("C-small-attempt2.in"));
        PrintWriter out = new PrintWriter(new File("output.txt"));

        int n = in.nextInt();
        int len = 0;

        for (int i = 1; i <= n; i++) {
            out.print("Case #" + i + ": ");
            int current_n = 0;
            int current_m = 0;
            int range = 0;
            int a = in.nextInt();
            int b = in.nextInt();
            int count = 0;

            if ((a + "").length() == 1 && (b + "").length() == 1) {
                count = 0;
            } else {
                range = b - a;
                for (int j = 0; j < range; j++) {
                    current_n = j + a;
                    current_m = j + a;

                    int l = (current_n + "").length();
                    // if (l==3) len=9;
                    // if(l==4) len = 28;
                    for (int k = 0; k < l; k++) {
                        String m = current_m + "";
                        if (m.length() < l) {
                            for (int w = 0; w < (l - m.length()); w++) {
                                m = "0"+m;
                            }
                        }
                        current_m = Integer.parseInt(m.substring(l - 1) + m.substring(0, l - 1));
                        if (current_m <= b && current_m > current_n && current_m >= a) {
                            ++count;
                        }
                    }
                }
            }
            out.println(count);
        }
        in.close();
        out.close();
    }
}