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 c;

import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {

	Set<Integer>[] c = new HashSet[2000001];

	public C()
	{
		Scanner s = new Scanner(System.in);

		int t = s.nextInt();

		for(int i =0; i < t;i ++)
		{
			int a = s.nextInt();
			int b = s.nextInt();

			for(int j = a; j <=b; j++)
			{
				c[j]= new HashSet<Integer>();
			}

			int digits = (a+"").toCharArray().length;

			for(int j = Math.min(a, b); j<=Math.max(a, b); j++)
			{
				int newJ = j;

				for(int k = 1; k < digits; k++)
				{
					int dig = newJ%10;
					newJ = newJ/10;
					newJ += dig*Math.pow(10, digits-1);


					if(newJ>=a && newJ<=b && newJ!=j)
					{
						int min = Math.min(newJ, j);
						int max = Math.max(newJ, j);
						c[min].add(max);
						//System.out.println(j+" "+min+" "+max);
					}
				}
			}
			
			long tot = 0;
			
			for(int j = a; j <=b; j++)
			{
				tot+=c[j].size();
			}
			
			System.out.println("Case #"+(i+1)+": "+tot);
		}
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		new C();

	}

}
