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.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class Main {
    public static void main(String[] args) throws IOException {

        String filename = "C:\\Users\\irene\\Desktop\\input.txt";
        List<String> inputLines = readInput(filename);
        int i = 0;
        for (String line : inputLines) {
            String[] limits = line.split("\\s+");
            RecycledNumbers rn = new RecycledNumbers(Integer.parseInt(limits[0]), Integer.parseInt(limits[1]));
            int result = rn.getDistinctPairsCount();
            System.out.print("Case #" + (i + 1) + ": " + result);
            System.out.println();
            i++;
        }
    }

    private static List<String> readInput(String filename) throws IOException {
        BufferedReader in
                = new BufferedReader(new FileReader(filename));

        Integer totalLines = Integer.parseInt(in.readLine());
        ArrayList<String> lines = new ArrayList<String>(totalLines);
        for (int i = 0; i < totalLines; i++) {
            lines.add(in.readLine());
        }
        return lines;
    }
}
