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;

public class ProblemC {
	
	public static void main(String [] args)
	{
		new ProblemC();
	}
	
	public ProblemC()
	{
		try
		{
			String [] inputFiles = { "C-small" };//,"A-large" };
			BufferedReader in;
			PrintWriter out;
			for(int i = 0 ; i < inputFiles.length; i++)
			{
				in = new BufferedReader(new FileReader(inputFiles[i]));
				out = new PrintWriter(new FileWriter(inputFiles[i]+".out"),true);
				
				int numCases = Integer.parseInt(in.readLine());
				int min, max;
				String [] items = null;
				for(int j = 0 ; j < numCases; j++)
				{
					items = in.readLine().split("\\s+");
					min = Integer.parseInt(items[0]);
					max = Integer.parseInt(items[1]);
					int total = 0;
					for(int x = min; x <= max; x++)
					{
						for(int y=x+1; y<= max; y++)
						{
							if(checkReycled(x,y))
								total++;
							
						}
					}
					out.println("Case #" + (j+1) + ": " + total);
				}
				in.close();
				out.close();
			}
		}
		catch(Exception e)
		{
			e.printStackTrace();
		}
	}

	private boolean checkReycled(int x, int y) {
		if(x == y)
			return false;
		else if(x<10 || y<10)
			return false;
		else if(x>=1000)
			return false;
		
		String xstr = new String("" +x);
		String ystr = new String("" +y);
		if(xstr.length() != ystr.length())
			return false;
		
		if(xstr.length() == 2)
		{
			if(xstr.charAt(0) == ystr.charAt(1) &&
					xstr.charAt(1) == ystr.charAt(0))
				return true;
		}
		else
		{
			if(xstr.charAt(0) == ystr.charAt(1) &&
					xstr.charAt(1) == ystr.charAt(2) &&
					xstr.charAt(2) == ystr.charAt(0))
				return true;
			else if(xstr.charAt(0) == ystr.charAt(2) &&
					xstr.charAt(1) == ystr.charAt(0) &&
					xstr.charAt(2) == ystr.charAt(1))
				return true;
		}
		return false;
	}
}
