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.*;

public class Main
{

  public static void main(String[] args)
  {
    Scanner in = new Scanner(System.in);
    Integer numCases = Integer.parseInt(in.nextLine());
    
    for (int k = 0; k < numCases; k++)
    {
      Integer num1 = Integer.parseInt(in.next());
      int num2 = Integer.parseInt(in.next());
      int count = 0;
      //ArrayList<Integer> tested = new ArrayList<Integer>();
      
      for (Integer i = num1; i <= num2; i++)
      {
	String number = i.toString();
	for (int j = 1; j < number.length(); j++)
	{
	  
	    String front = number.substring(j);
	    String newNumber = front + number.substring(0, j);
	    
	    Integer result = Integer.parseInt(newNumber);
	    
	    if (result > i && result <= num2)
	    {
	      /*tested.add(result);
	      tested.add(i);
	      System.out.println(result);*/
	      count++; 
	    }
	}
	//tested.add(i);
      }
      System.out.println("Case #"+(k+1)+": "+count);
    }
  }

}