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.*;
//import java.math.*;

public class c {

	public static void main(String[] args) throws IOException
	{
		Scanner qwe = new Scanner(new File("c.in"));
		BufferedWriter out = new BufferedWriter(new FileWriter("c.out"));
		int t = qwe.nextInt();
		for(int i = 1; i <= t; i++)
		{
			int a = qwe.nextInt();
			int b = qwe.nextInt();
			int[] been = new int[2000001];
			long count = 0;
			
			for(Integer j =a; j <= b; j++)
			{
				//if(been[j] > 1 && i == 4)
					//System.out.println(i + " " +j +  " " + been[j]);
				if(been[j] > 0)
					count += been[j];
				String s = j.toString();
				ArrayList<String> tocheck = new ArrayList<String>();
				for(int k = 1; k < s.length(); k++)
				{
					String torec = s.substring(k);
					String end = s.substring(0,k);
					String combin = torec+end;
					if(!tocheck.contains(combin) && Integer.parseInt(combin) < 2000001)
						been[Integer.parseInt(combin)] += 1;
					tocheck.add(combin);
				}
				
			}
			
			out.write("Case #" + i + ": " + count +  "\n");
		}
		out.close();
	}
}

