
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.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
public class C {
	public static void main(String[] args) throws Exception{
		Scanner sc = new Scanner(new File("C.in"));
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("C.out")));
		int N = Integer.parseInt(sc.nextLine());
		for(int i=1;i<=N;i++){
			HashSet<String> HS = new HashSet<String>();
			int A = sc.nextInt();
			int B = sc.nextInt();
			for(int a=A;a<=B;a++){
				String x = a+"";
				for(int b=1;b<x.length();b++){
					String temp = x.substring(b)+x.substring(0,b);
					if(temp.charAt(0)=='0')continue;
					int other = Integer.parseInt(temp);
					if(other>=A&&other<=B&&other!=a){
						HS.add(x+" "+temp);
					}
				}
			}
			out.println("Case #"+i+": "+(HS.size()>>1));
		}
		out.close();
	}
}
