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();
		}
	}
}

package recycling;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.HashSet;
import java.util.Scanner;

public class Main {
	
	public static int lint(int n){
		if(n == 0)
			return 0;
		return 1 + lint(n / 10);
	}
	
	public static void permut(int[] tab){
		int l = tab.length;
		int temp = tab[l - 1];
		for(int i = l - 1; i > 0; i--){
			tab[i] = tab[i - 1];
		}
		tab[0] = temp;
	}
	
	public static int toInt(int[] tab){
		int res = 0;
		int m = 1;
		for(int i = tab.length - 1; i >= 0; i--){
			res += m * tab[i];
			m *= 10;
		}
		return res;
	}
	
	public static int[] toTab(int n){
		int[] res = new int[lint(n)];
		int temp = n;
		for(int i = res.length - 1; i >= 0; i--){
			res[i] = temp % 10;
			temp /= 10;
		}
		return res;
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//String fileName = args[0];
		String fileName = "recycling/C-large.in";
		Scanner sC = null;
		try {
			sC = new Scanner(new File(fileName));
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		
		int T = sC.nextInt();
		int A, B, l;
		
		HashSet<Integer> set = new HashSet<Integer>();
		
		for(int i = 0; i < T; i++){
			A = sC.nextInt();
			B = sC.nextInt();
			
			l = lint(A);
			
			int[] tab;
			
			int temp;
			
			int count = 0;
			
			for(int j = A; j < B; j++){
				set.clear();
				tab = toTab(j);
				for(int k = 0; k < l - 1; k++){
					permut(tab);
					temp = toInt(tab);
					//System.out.println(j + " " + temp);
					if(temp > j && temp <= B){
						set.add(temp);
						//System.out.println(j + " " + temp);
					}
				}
				count += set.size();
			}
			
			System.out.println("Case #" + (i + 1) + ": " + count);
		}

	}

}
