
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.HashSet;
import java.util.Scanner;
import java.util.Set;


public class P3 {
	public static void main(String[] args) { 
		Scanner scan = new Scanner(System.in);
		int t = Integer.parseInt(scan.nextLine()); 
		for (int i = 0; i < t; i++) { 
			String[] x = scan.nextLine().split(" "); 
			int a = Integer.parseInt(x[0]); 
			int b = Integer.parseInt(x[1]);
			
			long count = 0;
			for (int j = a; j <= b; j++) { 
				count += find(j, b);
			}
			System.out.println("Case #" + (i+1) + ": " + count);
		}
		
	}
	
	public static long find(int x, int limit) { 
		long result = 0;
		String s = String.valueOf(x);
		Set<Integer> set  = new HashSet<Integer>();
		for (int i = 1; i < s.length() ; i++) { 
			if (s.charAt(i) != '0') { 
				String first = s.substring(0, i); 
				String second = s.substring(i, s.length());
				
				int number = Integer.parseInt(second + first);
				if (!set.contains(number) && number > x && number <= limit) { 
					result += 1;
					set.add(number);
				}
			}
		}
		return result;
	}
}
