package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

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


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

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

    public static void main(String[] args) throws IOException {
        
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int t = Integer.parseInt(br.readLine());
        int t1 = 1;
        int a, b;
        int count = 0;
        while (t1 <= t) {
            String s[] = br.readLine().split(" ");
            a = Integer.parseInt(s[0]);
            b = Integer.parseInt(s[1]);
            count=0;
            for (int i = a; i < b; i++) {
                List<Integer> lstR = getRnum(i);
                for (Integer j : lstR) {
                    if (j >= i && j <= b) {
                        count++;
                    }
                }

            }
            System.out.println("Case #"+ t1 + ": " + count);
            t1++;
        }

    }

    public static List<Integer> getRnum(int a) {
        List<Integer> lstRnum = new ArrayList<Integer>();
        String s = "" + a;
        int l = s.length();
        int modf = 10;
        int multf = (int) Math.pow(10, l - 1);
        int i = 1;
        boolean flag=true;
        while (i < l) {
            // System.out.println("modf "+modf);
            int x = ((a % modf) * multf) + a / modf;
            if (("" + x).length() == l && x!=a) {
                for(int xx:lstRnum){ if(xx==x) flag=false;}
                if(flag){
                    lstRnum.add(x);
                    
                }
                
            }
            modf = modf * 10;
            multf = multf / 10;
            i++;
        }

        return lstRnum;
    }
}
