package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.util.Scanner;

public class ProblemC {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int testCases = Integer.parseInt(scanner.nextLine());

        for (int i = 1; i <= testCases; i++) {
            String[] inputs = scanner.nextLine().split("\\s");
            int A = Integer.parseInt(inputs[0]);
            int B = Integer.parseInt(inputs[1]);
            int result = solve(A, B);
            System.out.println("Case #" + i + ": " + result);
        }
    }

    private static int solve(int A, int B) {
        int recycledPairs = 0;

        for (int n = A; n < B; n++) {
            for (int m = n + 1; m <= B; m++) {
//                System.out.println("Checking pair " + n + " " + m);
                if (isRecycledPairs(n, m)) {
                    recycledPairs++;
                }
            }
        }

        return recycledPairs;
    }

    private static boolean isRecycledPairs(int n, int m) {

        boolean result = false;

        String nString = String.valueOf(n);
        String mString = String.valueOf(m);
        String recycledString = null;

        for (int i = 0; i < nString.length(); i++) {
            recycledString = nString.substring(i, nString.length()) + nString.substring(0, i);
//            System.out.println(recycledString);

            if (mString.equals(recycledString)) {
                result = true;
            }
        }

        return result;
    }
}
