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.*;
import java.io.*;

public class Qual2012 {

	public static void lame() {
		try {
			FileReader fr = new FileReader("input.txt");
			BufferedReader reader = new BufferedReader(fr);
			PrintWriter writer = new PrintWriter("output.txt");

			HashMap<String, String> dictionary = new HashMap<String, String>();
			dictionary.put("a", "y");
			dictionary.put("b", "h");
			dictionary.put("c", "e");
			dictionary.put("d", "s");
			dictionary.put("e", "o");
			dictionary.put("f", "c");
			dictionary.put("g", "v");
			dictionary.put("h", "x");
			dictionary.put("i", "d");
			dictionary.put("j", "u");
			dictionary.put("k", "i");
			dictionary.put("l", "g");
			dictionary.put("m", "l");
			dictionary.put("n", "b");
			dictionary.put("o", "k");
			dictionary.put("p", "r");
			dictionary.put("q", "z");
			dictionary.put("r", "t");
			dictionary.put("s", "n");
			dictionary.put("t", "w");
			dictionary.put("u", "j");
			dictionary.put("v", "p");
			dictionary.put("w", "f");
			dictionary.put("x", "m");
			dictionary.put("y", "a");
			dictionary.put("z", "q");
			dictionary.put(" ", " ");
			int numCases = Integer.parseInt(reader.readLine());

			for (int i = 1; i <= numCases; i++) {
				String sentence = reader.readLine();
				String newSentence = "";
				for (char c : sentence.toCharArray()) {
					char[] temp = new char[1];
					temp[0] = c;
					newSentence += dictionary.get(new String(temp));
				}
				writer.println("Case #" + i + ": " + newSentence);
			}

			writer.close();
			fr.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static boolean canMatch(int score, int target) {
		if (score == 0)
			return target <= 0;
		if (score == 1 || score == 2)
			return target <= 1;
		if (score % 3 == 0) {
			return score / 3 >= target;
		}
		return ((score / 3) + 1 >= target);
	}

	public static boolean canMatchSpecial(int score, int target) {
		if (score == 0)
			return target <= 0;
		if (score == 1)
			return target <= 1;
		if (score == 2)
			return target <= 2;
		if (score % 3 == 1)
			return (score / 3 + 1) >= target;
		return (score / 3 + 2) >= target;
	}

	public static void dance() {
		try {
			FileReader fr = new FileReader("input.txt");
			BufferedReader reader = new BufferedReader(fr);
			PrintWriter writer = new PrintWriter("output.txt");

			int numCases = Integer.parseInt(reader.readLine());
			for (int i = 1; i <= numCases; i++) {
				StringTokenizer line = new StringTokenizer(reader.readLine(),
						" ");
				int numDancers = Integer.parseInt(line.nextToken());
				int numSurprising = Integer.parseInt(line.nextToken());
				int bestScore = Integer.parseInt(line.nextToken());
				List<Integer> scores = new LinkedList<Integer>();
				for (int j = 0; j < numDancers; j++)
					scores.add(Integer.parseInt(line.nextToken()));
				int count = 0;
				for (Integer score : scores) {
					if (canMatch(score, bestScore))
						count++;
					else if (canMatchSpecial(score, bestScore)
							&& numSurprising > 0) {
						numSurprising--;
						count++;
					}
				}
				writer.println("Case #" + i + ": " + count);
			}

			writer.close();
			fr.close();

		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void recycle() {
		try {
			FileReader fr = new FileReader("input.txt");
			BufferedReader reader = new BufferedReader(fr);
			PrintWriter writer = new PrintWriter("output.txt");
			
			int numCases = Integer.parseInt(reader.readLine());
			for (int i = 1; i <= numCases; i++) {
				StringTokenizer line = new StringTokenizer (reader.readLine(), " ");
				int A = Integer.parseInt(line.nextToken());
				int B = Integer.parseInt(line.nextToken());
				int count = 0;
				for (int k = A; k <= B; k++) {
					if (k < 10) {
						continue;
					}
					String temp = "" + k;
					String cmp = "" + k;
					int length = temp.length();
					temp = temp.substring(length-1) + temp.substring(0, length - 1);
					while (!temp.equals(cmp)) {
						int cycle = Integer.parseInt(temp);
						if (A <= cycle && cycle <= B)
							count++;
						temp = temp.substring(length-1) + temp.substring(0, length - 1);
					}
				}
				writer.println ("Case #" + i + ": " + count/2);
			
				
			}
			
			writer.close();
			fr.close();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	public static void main(String[] args) {
		// lame();
		// dance();
		recycle();
		
	}
}