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.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Set;



public class RNumber extends Basic2
{

   public static void main(String[] args) throws Exception 
   {
      RNumber p3 = new RNumber();
      p3.initialize();
      p3.printOutput();
      p3.bos.close();
   }
   
   @Override
   public void printOutput() throws Exception
   {
      int noTC = Integer.parseInt(bis.readLine());
      int runningTC = 1;
      while(runningTC<=noTC)
      {
         String[] a_b_str =bis.readLine().split(" ");
         long[] a_b = new long[]{Long.parseLong(a_b_str[0]),Long.parseLong(a_b_str[1])};
         if(a_b[0]>a_b[1])
         {
            long temp = a_b[0];
            a_b[0] = a_b[1];
            a_b[1] = temp;
         }
         Set<Long> found = new HashSet<Long>();
         int leading =0;
         for(long i=a_b[0];i<=a_b[1];i++)
         {
            long numberToCheck = i;
            for(long k = numberToCheck+1;k<=a_b[1];k++)
            {
               if(((""+k).length()==(""+numberToCheck).length()) && (""+k+""+k).contains(""+numberToCheck))
               {
                     leading++;
               }
               /*int t= k;
               String n=""+numberToCheck;
               int ld = 0;
               while(t>10 && t%10==0 && t>a_b[0])
               {
                  t=t/10;
                  ld++;
               }
               String ldSt="";
               for(int hh=0;hh<ld;hh++)
               {
                     ldSt ="0"+ldSt;
                     if(Integer.parseInt(ldSt+t)!=Integer.parseInt(t+ldSt))
                     {
                        found.add(ldSt+t);
                        found.add(t+ldSt);
                     }
               }*/
            }
         }
         bos.println("Case #"+runningTC+": "+leading);
         runningTC++;
      }
   }
}

abstract class Basic2
{
   protected BufferedReader bis;
   
   protected PrintWriter bos;
   
   protected void initialize() throws Exception
   {
      FileReader fs = null;
      FileWriter fr = null;

      fs = new FileReader(
            "C:\\CJ\\input2.txt");
      bis = new BufferedReader(fs);

      fr = new FileWriter(
            "C:\\CJ\\output2.txt");
      bos = new PrintWriter(fr);

   }
   
   public abstract void printOutput() throws Exception;
}
