import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

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

public class C implements Runnable{

	public void run(){
		try{
			Scanner in = new Scanner(new File("C-large.in"));
			PrintWriter out = new PrintWriter("C-large.out");
			int a, b, t = in.nextInt(), ans, x, l;
			String min, buf, max;
			Set<String> set = new HashSet<String>();
			for (int k = 1; k <= t; k++){
				ans = 0;
				a = in.nextInt();
				b = in.nextInt();
				max = Integer.toString(b);
				for (int i = a; i < b; i++){
					set.clear();
					x = i;
					min = buf = Integer.toString(x);
					l = min.length();
					for (int j = 0; j < l-1; j++){
						buf = min.substring(l - j - 1) + min.substring(0, Math.max(0, l - j - 1));
						if ((buf.length() == l) && (min.compareTo(buf) < 0) && (buf.compareTo(max) <= 0)) {
							if (!set.contains(buf)){
								set.add(buf);
								ans++;
							}
						}
					}
				}
				out.println("Case #" + k + ": " + ans);
			}
			out.close();
		}
		catch(Exception e){
		}                                         
	}

	public static void main(String[] args){
		(new Thread(new C())).start();
	}
}                       