import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.StringTokenizer;


public class jamc {
public static boolean b=false;
public static Scanner in;
public   static PrintWriter out;



static boolean recycle(int i,int j)
{
	String n=""+i+"";
	String m=""+j+"";
	
	for(int k=0;k<n.length();k++)
	{
		
		if(m.equals(n.substring(1)+n.substring(0, 1)))
		{
			return true;
		}
		n=n.substring(1)+n.substring(0, 1);
		
		
	}
	
	
	
	
	return false;
}

	
	public static void ecrire(String s)
	{
		if(b)
		{
			out.println("");
		}
		b=true;
		out.print(s);
		
		
		
	}

	/**
	 * @param args
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws FileNotFoundException {
		// TODO Auto-generated method stub
		
         in=new Scanner(new File("C-small-attempt9.in"));
		 out=new PrintWriter("c.out");
	in.nextLine();
	int j=1;
	while(in.hasNext())
	{
		
		int compt=0;
		String s=in.nextLine();
		String resultat="";
		StringTokenizer tk=new StringTokenizer(s);
		String n=tk.nextToken();
		String m=tk.nextToken();
		int nint=Integer.parseInt(n);
		int mint=Integer.parseInt(m);
		for(int par=nint;par<=mint;par++)
		{
			for( int par1=nint;par1<=mint;par1++)
			{
				if(recycle(par,par1)&&(par!=par1))
					compt++;
				
				
			}
			
			
			
		}
		resultat="Case #"+j+": "+compt/2+"";
		ecrire(resultat);
		j++;
		
		
		}
		
		
	
	
	
	
	

	
	
	
	
	
	in.close();
	out.close();

	}

}
