
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.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class Pairs {

	/**
	 * @param args
	 */
	
	public static int counter=0;
	
	public static void checkhelper(String a,String b)
	{
		if(a.length()!=b.length())
			return;
		if(a.concat(a).contains(b))
			counter++;	
	}
	
	
	public static void check(int a,int b)
	{
		for(int i=a;i<=b;i++)
		{
			for(int j=i+1;j<=b;j++)
			checkhelper(""+i, ""+j);
			
		}
		
		
	}
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub

		
		BufferedWriter bw=new BufferedWriter(new FileWriter("out2.out"));
		BufferedReader bf=new BufferedReader(new FileReader("input.txt"));
		int count=Integer.parseInt(bf.readLine());
		for(int i=0;i<count-1;i++)
		{
			
			String line=bf.readLine();
		String []a=line.split(" ");
		
		check(Integer.parseInt(a[0]),Integer.parseInt(a[1]));
	
	bw.write("Case #"+(i+1)+": "+counter);
	bw.newLine();
	counter=0;
	}
		
		String line=bf.readLine();
		String []a=line.split(" ");
		
		check(Integer.parseInt(a[0]),Integer.parseInt(a[1]));
	
	
	bw.write("Case #"+(count)+": "+counter);
	bw.close();
	}

}
