import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Scanner;

public class C
{
    Scanner in;
    PrintWriter out;
    PrintStream err;
    
    private boolean recycled(int x, int y) {
    	String s1 = Integer.toString(x);
    	String s2 = Integer.toString(y);
    	if (s1.length() != s2.length())
    		return false;
    	for (int i = 0; i < s1.length(); ++i)
    		if (s1.equals(s2.substring(i) + s2.substring(0, i)))
    			return true;
    	return false;
    }
 
    private void run() throws Exception
    {
    	//in  = new Scanner(System.in);
    	//out = new PrintWriter(System.out);
        //in = new Scanner(new FileInputStream(		new File("input")));
        in = new Scanner(new FileInputStream(		new File("C-small-attempt0.in")));
        //in = new Scanner(new FileInputStream(		new File("X-large.in")));
        out = new PrintWriter(new FileOutputStream(	new File("output")));
        err = System.out;

        int testCases = in.nextInt();

        for (int test = 1; test <= testCases; ++test) {
        	int a = in.nextInt();
        	int b = in.nextInt();
        	int result = 0;
        	for (int i = a; i <= b; ++i)
        		for (int j = i+1; j <= b; ++j)
        			if (recycled(i, j))
        				result++;
        	out.println("Case #" + test + ": " + result);
        }
        out.close();
    }

    public static void main(String[] args) throws Exception
    {
        new C().run();
    }
}