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 recycled
{

	public static void main(String[] args)
	{
		try
		{
			FileReader fread = new FileReader(new File("C-small-attempt0.in"));
			BufferedReader br = new BufferedReader(fread);
			FileWriter fwrite = new FileWriter(new File("output.txt"));
			PrintWriter pw = new PrintWriter(fwrite);
			int cases = new Integer(br.readLine());
			for (int i = 1; i <= cases; i++)
			{
				String line = br.readLine();
				StringTokenizer st = new StringTokenizer(line);
				String temp = st.nextToken();
				if (temp.length() == 1)
				{
					pw.println("Case #" + i + ": 0");
					System.out.println("Case #" + i + ": 0");
				}
				else
				{
					int min = new Integer(temp);
					int max = new Integer(st.nextToken());

					int count = 0;

					for (int j = min; j <= max; j++)
					{
						String current = "" + j;
						String changing = current;
						HashSet<Integer> seen = new HashSet<Integer>();
						for (int k = current.length() - 1; k > 0; k--)
						{
							changing = changing.substring(1) + changing.charAt(0);
							int intchanging = new Integer(changing);
							if ((intchanging > new Integer(current)) && (intchanging <= max) && (!seen.contains(intchanging)))
							{
								count++;
								seen.add(intchanging);
							}
						}
					}
					/*
					 * int end = max / 10; System.out.println(end);
					 * System.out.println(tens); for (int j = min; j <= max;
					 * j++) { int ref = j / 10; int mod = j % 10; boolean found
					 * = false; while (ref > 0) { int check = ref % 10; if
					 * (check != mod) { found = true; break; } ref /= 10; } if
					 * (found) { if (((j % tens) < end)&&((j % tens) >=
					 * (tens/10))) { if ((j / tens) < (j % tens)) {
					 * System.out.print(j +" "); count++; } } } }
					 */
					pw.println("Case #" + i + ": " + count);
					System.out.println("Case #" + i + ": " + count);
				}
			}
			pw.close();
		}
		catch (FileNotFoundException e)
		{
			e.printStackTrace();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}

}
