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 recycled;

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class Recycle {
	public static void main(String[] args)throws IOException {
		BufferedWriter saida = new BufferedWriter(new FileWriter("saida.out"));
		File file = new File("C-large.in");
		Scanner scan = new Scanner(file);
		int casos;
		String a;
		String b;
		String linha;
		String[] divisao;
		String novo;
		ArrayList<String> list = new ArrayList<String>();
		int tamanhoN;
		casos = Integer.parseInt(scan.nextLine());
		String n;
		String m;
		for (int  i =1; i <= casos;i++){
			saida.write("Case #" + i + ": ");
			int pares = 0;
			linha = scan.nextLine();
			divisao = linha.split("\\s+");

			a = divisao[0];
			b = divisao[1];

			n = a;
			do{
				m = n;
				tamanhoN = n.length();
				for(int j = 0; j < tamanhoN;j++){
					m = desloca(m);
					novo = ("(" + n + "," + m + ") ");
					if(!(list.contains(novo))){
						if(Long.parseLong(a) <= Long.parseLong(n) && Long.parseLong(n) < Long.parseLong(m) && Long.parseLong(m) <= Long.parseLong(b)){
							pares++;
						}
					}
				}
				n = String.valueOf(Long.parseLong(n) + 1);
			}while(Long.parseLong(n) < Long.parseLong(b));
			System.out.println(pares);
			saida.write(pares + "");
			saida.newLine();
		}
		
		if (saida != null){
			saida.flush();
			saida.close();
		}

	}
	
	public static String desloca(String n){
		StringBuffer temp = new StringBuffer(n);
		char primeiro = n.charAt(0);
		for (int j=1; j < temp.length(); j++)
		{
			char c = n.charAt(j);
			temp.setCharAt(j-1, c);
		}
		temp.setCharAt(n.length()-1, primeiro);
		
		n = temp.toString();
		return n;
	}
	
}
