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.*;
import java.util.*;

public class RecycledNumbers
{
   static int start, end;
   public static void main(String[] args) throws IOException
   {
      Scanner scan = new Scanner(new File("c_small.in"));
      
      int numCases = scan.nextInt();
      for (int z = 1; z <= numCases; z++)
      {
         start = scan.nextInt();
         end = scan.nextInt();
         int count = 0;
         for (int i = start; i <= end; i++)
         {
            String rep = i + "";
            Set<String> done = new HashSet<String>();
            for (int j = 0; j < rep.length(); j++)
            {
               String res = eval(rep, j);
               if (res != null && !done.contains(res))
               {
                  done.add(res);
                  count++;
               }
            }
         }
         System.out.println("Case #"+z+": " + count);
      }
   }
   
   static String eval(String rep, int ind)
   {
      String part1 = rep.substring(0, ind);
      String part2 = rep.substring(ind, rep.length());
      
      String two = part2 + part1;
      
      int twoVal = Integer.valueOf(two);
      if (two.charAt(0) != '0' && two.compareTo(rep) > 0 && twoVal <= end)
      {
         //System.out.println(rep + " " + two);
         return two;
      }
      return null;
   }
}
