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 google.contest.C;

import google.loader.Challenge;
import google.problems.AbstractChallenge;

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

public class CChallenge extends AbstractChallenge implements Challenge {

	private int B;
	private int A;
	private int num;
	Set<String>pairs ;
	public CChallenge(int number, String line) {
		super(number);
		num=0;
		
		pairs = new HashSet<String>();
		
		String[] tokens = line.split(" ");

		A = Integer.parseInt(tokens[0]);
		B = Integer.parseInt(tokens[1]);
		int i=0;
		for( i=A ; i<=B; i++){
			calcFor(i);
		}
		
		setResult(""+num);
	}

	private void calcFor(int i) {
		String numString = ""+i;
		
		for(int j=1; j<= numString.length()-1; j++){
			String first = numString.substring(0,j);
			String second = numString.substring(j);
			String third = second+first;
			check(i, third);
			
		}
	}

	private void check(int i, String third) {
		if(third.startsWith("0")){
			return;
		}
		int j = Integer.parseInt(third);
		if(A<=i && i<j && j<=B){
			
			String hlp = ""+i+j;
			if(! pairs.contains(hlp)){
				pairs.add(hlp);
				num++;
			}else{
				System.out.println(""+num+"  "+i+"  "+j);
			}
		}
	}
}
