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 com.gzroger.codejam2012;

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;

public class QC {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			BufferedReader reader = new BufferedReader(new FileReader(args[0]));
			int nCases = Integer.parseInt( reader.readLine() );
			for (int iCases=0; iCases<nCases; iCases++) {
				String stLine = reader.readLine();
				int A, B;
				StringTokenizer st = new StringTokenizer(stLine);
				A = Integer.parseInt( st.nextToken() );
				B = Integer.parseInt( st.nextToken() );
				System.out.println("Case #"+(iCases+1)+": "+ possible(A, B));
			}
			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (NumberFormatException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}

	}

	private static long possible(int A, int B) {
		int cPos = 0;
		int N = 0;
		int Z = A;
		while (Z>=1) {
			Z = Z/10;
			N++;
		}
		
		for (int n=A; n<=B; n++) {
			Set<Integer> hmInt = new HashSet<Integer>();
			for (int j=1; j<N; j++) {
				int m = n%I[j]*I[N-j] + n/I[j];
				if (n<m && m<=B && !hmInt.contains(m)) {
					cPos ++;
					hmInt.add(m);
				}
			}
		}
		return cPos;
	}

	
	static int[] I = new int[8];
	static {
		int n = 1;
		for (int i=0; i<I.length; i++) {
			I[i] = n;
			n*=10;
		}
	}
}
