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.awt.List;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Arrays;
import java.util.Collection;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;


public class ProblemC {

	/**
	 * @param args
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws FileNotFoundException {
		// TODO Auto-generated method stub
		Scanner sc = new Scanner(new File(args[0]));
		int numberOfLines = Integer.parseInt(sc.nextLine());
		Scanner lineScan;
		int lowerBound, upperBound;
		String line;
		String number;
		String movingPart;
		String newNumber;
		int count;
		
		for (int i = 0; i< numberOfLines; i++)
		{
			line = sc.nextLine();
			lineScan = new Scanner(line);
			lowerBound = lineScan.nextInt();
			upperBound = lineScan.nextInt();
			count = 0;
			
			if (upperBound < 10)
			{
				System.out.println("Case #" + (i+1) + ": " + 0);
			}
			else
			{
				for (int j = lowerBound; j<= upperBound; j++)
				{
					number = Integer.toString(j);

					for (int k = 1; k< number.length(); k++)
					{
						if (number.charAt(k) != '0')
						{
							movingPart = number.substring(k, number.length());

							newNumber = movingPart + number.substring(0,k);

							if (Integer.parseInt(newNumber) <= upperBound && 
									Integer.parseInt(newNumber) > Integer.parseInt(number))
							{
								count ++;
								//System.out.println("Number " + number + " New number " + newNumber + "counter" + count);
							}
						}
					}


				}

				System.out.printf("Case #%d: %d\n",(i+1), count);

			}
		}
	}
}
