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.niall.codejam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.HashSet;

public class ProbC {
	
	String english, goglish;
	
	public ProbC(){
	}
	
	public int solve(int a, int b){
		int count = 0;
		HashSet<Integer> set;
		for(int n = a; n<= b; n++){
			String x = n + "";
			set = new HashSet<Integer>();
			for(int j = 0; j < x.length() - 1; j++){
				x = push(x);
				int m = Integer.parseInt(x);
				if(n < m && m <=b ){
					set.add(m);
				}
			}
			count += set.size();
		}
		return count;
		
	}

	public String push(String x){
		return x.substring(1) + x.charAt(0);
	}

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String infile = "probCin";
		String outfile = "probCans";
		try {
			BufferedReader br = new BufferedReader(new FileReader(new File(infile)));
			BufferedWriter bw = new BufferedWriter(new FileWriter(new File(outfile)));
			ProbC p1 = new ProbC();
			
			br.readLine();
			int i = 1;
			String s;
			while((s=br.readLine())!= null){
				String[] ss = s.split(" ");
				int a = Integer.parseInt(ss[0]);
				int b = Integer.parseInt(ss[1]);
				bw.write("Case #" + i + ": " + p1.solve(a,b));
				bw.newLine();
				i++;
			}
			bw.close();
			br.close();
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}
