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.util.*;
   import java.io.*;
   
   public class rcycn
   {
      public static void main(String[] args) throws Exception
      {
         BufferedReader inputer = new BufferedReader(new FileReader("rcycn.in"));
         PrintWriter outputer = new PrintWriter(new BufferedWriter(new FileWriter("rcycn.out")));
         
         int T = Integer.parseInt(inputer.readLine());
         for(int i = 0; i < T; i++)
         {
            StringTokenizer st = new StringTokenizer(inputer.readLine());
            int A = Integer.parseInt(st.nextToken());
            int B = Integer.parseInt(st.nextToken());
            int answer = 0;
            
            if(B >= 10)
               for(int n = A; n <= B; n++)
                  for(String m = rotate(String.valueOf(n)); Integer.parseInt(m) != n; m = rotate(String.valueOf(m)))
                     if(Integer.parseInt(m) <= B && Integer.parseInt(m) > n)
                        answer++;
            
            outputer.println("Case #" + (i + 1) + ": " + answer);
         }
         
         outputer.close();
         inputer.close();
      }
      
      public static String rotate(String n)
      {
         return n.substring(n.length() - 1) + n.substring(0, n.length() - 1);
      }
   }