
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.*;

public class C
{
	public static void main(String args[])
	{
		Scanner scan = new Scanner(System.in);

		int T = scan.nextInt();
		for(int ca=1;ca <= T;ca++)
		{
			int A = scan.nextInt();
			int B = scan.nextInt();

			int rtn = 0;
			String str = "1";
			while(str.length() < (A+"").length()) str += "0";
			int MOD = Integer.parseInt(str);

			for(int i=A;i <= B;i++)
			{
				int k = i;
				HashSet<Integer> h = new HashSet<Integer>();
				for(int j=0;j < str.length();j++)
				{
					//str = str.substring(1) + str.substring(0,1);
					//int k = Integer.parseInt(str);
					k = (k % MOD) * 10 + (k / MOD);

					if(k > i && k <= B && !h.contains(k))
						rtn++;
					
					h.add(k);
				}
			}

			System.out.println("Case #" + ca + ": "+ rtn);
		}
		

	}
}