import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

/*
 * @author Magix.Lu
 */
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.Scanner;

public class RecycledNum {
	public static void main(String[] args) throws IOException {
		Scanner scanInput = new Scanner(System.in);
		String target = scanInput.next();

		File inputFile = new File(target);
		Scanner fileScan = new Scanner(inputFile);

		String outpFileName = "output.txt";
		FileWriter googlewriter = null;
		googlewriter = new FileWriter(outpFileName);

		PrintWriter diskFile = new PrintWriter(googlewriter);

		int count = fileScan.nextInt();
		int min = 0;
		int max = 0;
		int len = 0;

		int a = 0;
		int b = 0;

		int counter = 0;

		for (int i = 0; i < count; i++) {
			min = fileScan.nextInt();
			max = fileScan.nextInt();

			a = min;
			len = Integer.toString(a).length();
			counter = 0;

			if (len == 1) {
				diskFile.print("Case #" + (i + 1) + ": " + counter + "\n");

				System.out.println(counter);
			} else {
				while (a <= max) {
					b = a;
					String num = Integer.toString(b);

					for (int j = 0; j < len - 1; j++) {

						if (len == 2) {
							String result = Character.toString(num.charAt(1))
									+ num.charAt(0);

							num = result;
							b = Integer.parseInt(result);
						}

						else {

							String front = Character.toString(num.charAt(num
									.length() - 1));
							String behind = num.substring(0, num.length() - 1);

							String result = front + behind;

							num = result;
							b = Integer.parseInt(num);
						}

						if (min <= a && a < b && b <= max) {
							counter++;
							System.out.println(a + "	" + b);
						}

					}

					a++;
				}
				diskFile.print("Case #" + (i + 1) + ": " + counter + "\n");
				System.out.println(counter);
			}
		}

		diskFile.close();

	}

}
