import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}

import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Scanner;
import java.util.Set;
import java.util.regex.Pattern;


public class ProblemC {

	public static void main(String[] args) {

		Scanner input;
		try {
			input = new Scanner(new FileReader("C-large.in"));
			PrintWriter output = new PrintWriter(new FileWriter("output3.txt"));

			int numberCases = input.nextInt();
			String data = input.nextLine();

			for (int i = 0; i < numberCases; i++) {
				output.print("Case #" + (i + 1) + ": ");

				data = input.nextLine();
				String[] intS = Pattern.compile(" ").split(data);
				int[] numbers = new int[intS.length];
				for (int j = 0; j < intS.length; j++) {
					numbers[j] = Integer.parseInt(intS[j]);
				}

				int lowerBound = numbers[0];
				int upperBound = numbers[1];
				output.print(calculatePossibilities(lowerBound, upperBound));
				output.print("\n");
			}

			output.flush();
			output.close();
			input.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

	public static int calculatePossibilities(int lowerBound, int upperBound) {

		//Set allPossibilities = new HashSet();
		int numberDigits = (int) (Math.floor(Math.log10(lowerBound))) + 1;
		int currentNumber = 0;
		int lowPart = 0;
		int counter = 0;
		int highPart = 0;
		//System.out.println("Digits " + numberDigits);
		for (int j = lowerBound; j <= upperBound; j++) { 
			Set permutations = new HashSet();
			for (int i = 1; i <= numberDigits - 1; i++) {
				lowPart = j % ((int) Math.pow(10, i));
				highPart = j / ((int) Math.pow(10, i));
				currentNumber = (lowPart * (int) Math.pow(10, numberDigits - i)) + highPart;
				//System.out.println(currentNumber + " <- j: " + j + " i:" + i + "  low " + lowPart + " high " + highPart);
				
				if (currentNumber >= lowerBound && currentNumber <= upperBound &&
						currentNumber > j) {
					permutations.add(currentNumber);
				}
				//if (!permutations.isEmpty())
					//allPossibilities.add(permutations);
			}
			counter = counter +  permutations.size();
		}

		//System.out.println("A: " + allPossibilities.size());
		return counter;
	}
}
