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;
	}

}

package contest;

import java.io.BufferedReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Input {
	BufferedReader in;

	public Input(BufferedReader in) {
		this.in = in;
	}

	//

	public String readStr() {
		return readStr(in);
	}

	public int readInt() {
		return readInt(in);
	}

	public int[] readIntArr() {
		return readIntArr(in, " ");
	}

	public List<Integer> readIntList() {
		return readIntList(in, " ");
	}

	public List<String> readStrList() {
		return readStrList(in, " ");
	}

	//

	public String readStr(BufferedReader in) {
		try {
			return in.readLine();
		} catch (Exception e) {
			e.printStackTrace();
			return null;
		}
	}

	public int readInt(BufferedReader in) {
		return Integer.parseInt(readStr(in));
	}

	public int[] readIntArr(BufferedReader in) {
		return readIntArr(in, " ");
	}

	public int[] readIntArr(BufferedReader in, String delimiter) {
		String[] tokens = readStr(in).split(delimiter);
		int[] ints = new int[tokens.length];
		for (int i = 0; i < tokens.length; i++) {
			ints[i] = Integer.parseInt(tokens[i]);
		}
		return ints;
	}

	public List<Integer> readIntList(BufferedReader in) {
		return readIntList(in, " ");
	}

	public List<Integer> readIntList(BufferedReader in, String delimiter) {
		String[] tokens = readStr(in).split(delimiter);
		List<Integer> ints = new ArrayList<Integer>(tokens.length);
		for (int i = 0; i < tokens.length; i++) {
			ints.add(Integer.parseInt(tokens[i]));
		}
		return ints;
	}

	public List<String> readStrList(BufferedReader in, String delimiter) {
		return Arrays.asList(readStr(in).split(delimiter));
	}
}
