
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;
import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;

public class Recycle
{
	public static void main(String[] args)
	{
/*		Set<Integer> perms = getPermutations(123456);
		
		for(Integer i: perms)
			System.out.println(i);*/
	
		try
		{
			Scanner s = new Scanner(new File("recycle.in"));
			BufferedWriter w = new BufferedWriter(new FileWriter(new File("recycle.out")));
			int numCases = s.nextInt();
			s.nextLine();
			
			for(int n = 1;n <= numCases; n++)
			{
				int A = s.nextInt();
				int B = s.nextInt();
				int count = 0;
				for(int k = A; k <= B; k++)
				{
					count += getNumPairs(k, B);
				}
				
				w.write("Case #" + n + ": " + count + "\n");
			}
			
			w.flush();
			w.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
	
	public static int getNumPairs(int n, int B)
	{
		Set<Integer> possibles = getPermutations(n);
		int count = 0;
		for(Integer i : possibles)
			if(i > n && i <= B)
				count++;
		return count;
	}
	
	public static Set<Integer> getPermutations(int n)
	{
		Set<Integer> perms = new TreeSet<Integer>();
		char[] digits = String.valueOf(n).toCharArray();
		
		for(int firstPos = 1; firstPos < digits.length; firstPos++)
		{
			String toBuild = "";
			for(int k = 0; k < digits.length; k++)
				toBuild += digits[(firstPos + k) % digits.length];
			perms.add(Integer.parseInt(toBuild));
		}
		return perms;
	}
	

}
import java.util.*;
import java.io.*;
import java.text.*;
import java.math.*;

public class RecycledNumbers {
    public static BufferedReader BR;

    public static String readLine() {
        try {
            return BR.readLine();
        } catch(Exception E) {
            System.err.println(E.toString());
            return null;
        }
    }


    // ****** MAIN ******

    public static void main(String [] args) throws Exception {
        BR = new BufferedReader(new InputStreamReader(System.in));

        int testcases = Integer.parseInt(readLine());
        for (int t = 1; t <= testcases; t++) {
            RecycledNumbers instance = new RecycledNumbers();
            instance.solve(t);
        }

    }

    // ****** GLOBAL VARIABLES ******



    public RecycledNumbers() {
    }

    public boolean solve(int caseNumber) {
    	StringTokenizer st = new StringTokenizer(readLine());
    	int a = Integer.parseInt(st.nextToken());
    	int b = Integer.parseInt(st.nextToken());
    	int n = Integer.toString(a).length();
    	long result = 0;
    	for (int i = a; i <= b; ++i) {
    		String s = Integer.toString(i);
    		Set<Integer> seen = new HashSet<Integer>();
    		for (int j = 1; j < n; ++j) {
    			int rotated = Integer.parseInt(s.substring(j) + s.substring(0,j));
    			if (i < rotated && rotated <= b && !seen.contains(rotated)) {
    				seen.add(rotated);
    				++result;
    			}
    		}
    	}
      System.out.println("Case #" + caseNumber + ": " + result);
			return false;
    }


}
