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

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

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

public class MainClass {

	/**
	 * @param args
	 */
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(new File("C-large.in"));
		PrintWriter out = new PrintWriter(new File("RecycledNumbers.out"));

		int N = sc.nextInt();
		for (int i = 0; i < N; i++) {
			System.out.println("For case i: " + i);
			int A = sc.nextInt();
			int B = sc.nextInt();
			long count = 0;
			String s1 = "";
			for (int j = A; j <= B; j++) {
				s1 = "" + j;
				ArrayList<String> done = new ArrayList<String>();
				for (int k = 0; k < s1.length(); k++) {
					String tempS = s1;
					tempS = s1.substring(1) + s1.charAt(0);
					if (done.contains(tempS)) {
						continue;
					} else {
						s1 = tempS;
					}
					int temp = Integer.parseInt(s1);
					if ((temp < j) && (temp >= A) && (temp <= B)) {
						count++;
						done.add(s1);

					}

				}
			}
			out.println("Case #" + (i + 1) + ": " + count);
			System.out.println("**************");
		}
		out.close();

	}

}
