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();
		}
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Arrays;

/**
 * Created by IntelliJ IDEA.
 * User: Abhishek
 * Date: 4/14/12
 * Time: 1:09 PM
 * To change this template use File | Settings | File Templates.
 */
public class RecNum {
    public int recycled(String a, String b){
        int a1 = Integer.parseInt(a);
        int b1 = Integer.parseInt(b);
        int num = a1;
        int count=0;
        while(num<=b1){
            String x = String.valueOf(num);
            ArrayList<String> store = new ArrayList<String>(10);
            for(int i=1; i<x.length(); i++){
                String y = x.substring(x.length()-i, x.length())+x.substring(0, x.length()-i);

                int k = Integer.parseInt(y);
                if(k<=b1 && k>num && !store.contains(y)){
                    count++;
                    store.add(y);
                }
            }
            num++;

        }
        return count;
    }
    public static void main(String[] args) {
        RecNum spk = new RecNum();
        try {
            BufferedReader buff = new BufferedReader(new FileReader("C-large.in"));
            FileWriter fstream = new FileWriter("out1.txt");
            BufferedWriter out = new BufferedWriter(fstream);
            int numTest = Integer.parseInt(buff.readLine());
            if (numTest < 1 || numTest > 50)
                System.exit(0);

            for (int k = 0; k < numTest; k++) {
                String[] inp = buff.readLine().split(" ");

                out.write("Case #" + (k + 1) + ": " + spk.recycled(inp[0],inp[1]));
                out.write("\n");
//                System.out.println("Case #" + (k + 1) + ": " + spk.recycled(inp[0],inp[1])+"\n");


            }
            out.close();

        } catch (Exception e) {
            System.out.println("Exception" + e);
        }
    }
}
