
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.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashSet;


public class C {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader reader = new BufferedReader(new FileReader("c.txt"));
		String line = reader.readLine();
		int count = 1;
		while ((line = reader.readLine()) != null) {
			String [] split = line.split("\\s+");
			int A = Integer.parseInt(split[0]);
			int B = Integer.parseInt(split[1]);
			int ans = 0;
			for (int i = A; i <= B; i++) {
				String num = i+"";
				String tmp = num;
				HashSet<String> set = new HashSet<String> ();
				for (int j = 1; j < num.length(); j++) {
					char t = tmp.charAt(0);
					tmp = tmp.substring(1);
					tmp = tmp + t;
					if((Integer.parseInt(tmp)+"").length() == num.length() && Integer.parseInt(num) < Integer.parseInt(tmp) && Integer.parseInt(tmp) <= B) {
						if(!set.contains(tmp+" "+num))
							ans++;
						set.add(tmp+" "+num);
					}
				}
			}
			System.out.println("Case #"+(count++)+": "+ans);
		}
		reader.close();
	}

}
