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

public class RecycledNumbers {


    public static void main(String[] args) throws IOException {
        File in = new File("c:\\temp\\input.txt");
        File out = new File("c:\\temp\\output.txt");
        BufferedWriter w = new BufferedWriter(new FileWriter(out));
        Scanner sc = new Scanner(in);
        int testCases = Utils.readIntegerLine(sc);
        for (int i = 1; i <= testCases; i++) {
            int min =  Utils.readInteger(sc);
            int max = Utils.readInteger(sc);
            long count = solve(min, max);
            String result = String.format("Case #%d: %d", i, count);
            w.write(result);
            System.err.println(result);
            w.newLine();
        }
        w.close();

    }

    private static long solve(int min, int max) {
        long count = 0;
        for(int n = min; n <= max; n++) {
            long countForN = countGreaterAnagrams(n, max);
            count += countForN;
       }
        return count;
    }

    private static long countGreaterAnagrams(int n, int max) {
        String s = String.valueOf(n);
        char[] chars = s.toCharArray();
        int length = chars.length;
        Set<Integer> numbers = new HashSet<Integer>();
        StringBuilder sb = new StringBuilder(length);
        for(int permStart = 1; permStart < chars.length; permStart++) {
            sb.setLength(0);
            for(int j = 0; j < length; j++) {
                sb.append(chars[(permStart + j) % length]);
            }
            int newN = Integer.parseInt(sb.toString());
            if (newN > n && newN <= max) {
                numbers.add(newN);
            }
        }
        return numbers.size();
    }
}

