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.*;
import java.math.*;

public class C
{
  static int[] size={1,10,100,1000};
	public static void main(String[] args) throws Exception
	{
    int T;	
		RandomAccessFile in = new RandomAccessFile(args[0],"r");
		T=Integer.parseInt(in.readLine());
		


		for (int i=1; i<=T; i++)
		{
      String line=in.readLine();      
      String[] temp=line.split(" ");
      int a=Integer.parseInt(temp[0]);
      int b=Integer.parseInt(temp[1]);      
      String ans=solve(a,b);
      System.out.println("Case #"+i+": "+ans);
    }

		in.close();
	}
	

	public static String solve(int a, int b)
  {
    int total=0;
    for (int i=a; i<=b; i++) total+=count(i,b);
    return ""+total;
  }
  
  public static int count(int start, int max)
  {
    //System.out.println("Start "+start);
    String temp=""+start;
    int N=temp.length();
    
    int a=start;
    int count=0;
    for (int i=0; i<N-1; i++)
    {
      a=rotate(a,size[N-1]);
      //System.out.println(a);
      if (a>start && a<=max) count++;
    }
    
    return count;
  }
  
  public static int rotate(int a, int n)
  {
    int last=a%10;
    return a/10+n*last;
  }
  
  public static void print(int[] b)
  {
    for (int i=0; i<b.length; i++) System.out.print(b[i]);
    System.out.println();
  }
}