import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class Q3M {
	public static void main(String[] args) throws Exception {
		compute();
	}

	private static void compute() throws Exception {
		BufferedReader br = new BufferedReader(new FileReader(new File(
				"C:\\work\\Q3\\C-small-attempt0.in")));
		String line = null;
		int i = Integer.parseInt(br.readLine());
		List l = new ArrayList();
		for (int j = 0; j < i; j++) {
			line = br.readLine();
			String[] nums = line.split(" ");
			l.add(calculate(nums));
		}
		writeOutput(l);
	}

	private static int calculate(String[] nums) {
		int min = Integer.parseInt(nums[0]);
		int max = Integer.parseInt(nums[1]);
		int count = 0;
		List l = new ArrayList();
		for (int i = min; i <= max; i++) {
			for (int times = 1; times < countDigits(i); times++) {
				int res = shiftNum(i, times);
				if (res <= max && i < res) {
					if ((!l.contains((i + ":" + res)))) {
						l.add(i + ":" + res);
						l.add(res + ":" + i);
						count++;
					}
				}
			}
		}
		return count;
	}

	private static boolean checkZeros(int temp, int res) {
		if (temp % 10 == 0 || res % 10 == 0)
			return false;
		return true;
	}

	private static int shiftNum(int n, int times) {
		int base = (int) Math.pow(10, times);
		int temp2 = n / base;
		int placeHolder = (int) Math.pow((double) 10,
				(double) countDigits(temp2));
		int res = placeHolder * (n % base) + temp2;
		if (countDigits(res) == countDigits(n)) {
			return res;
		} else {
			return 2000001;
		}
	}

	public static int countDigits(int x) {
		if (x < 10)
			return 1;
		else {
			return 1 + countDigits(x / 10);
		}
	}

	private static void writeOutput(List l) throws Exception {
		StringBuffer b = new StringBuffer();
		int i = 1;
		BufferedWriter br = new BufferedWriter(new FileWriter(new File(
				"C:\\work\\Q3\\ans.txt")));
		for (Iterator iterator = l.iterator(); iterator.hasNext();) {
			br.write("Case #" + i++ + ": " + iterator.next());
			br.newLine();
		}
		br.close();
	}

}
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Locale;
import java.util.StringTokenizer;

public class Main {
	private static final String TASKNAME = "a";

	private void solve() throws Exception {
		int tests = nextInt();
		for (int test = 1; test <= tests; ++test) {
			printf("Case #%d: ", test);
			
			int a = nextInt();
			int b = nextInt();
			
			HashSet<String> set = new HashSet<String>();
			for (int i = a; i <= b; ++i) {
				set.add("" + i);
			}
			HashSet<Long> ans = new HashSet<Long>();
			for (int i = a; i <= b; ++i) {
				String s = "" + i;
				for (int pref = 1; pref < s.length(); ++pref) {
					String t = s.substring(pref) + s.substring(0, pref);
					if (t.charAt(0) == '0') {
						continue;
					}
					if (set.contains(t) && !s.equals(t)) {
						long aa = i;
						long bb = Integer.parseInt(t);
						if (aa > bb) {
							long tt = aa;
							aa = bb;
							bb = tt;
						}
						long key = (aa << 30) + bb;
						if (ans.add(key)) {
//							System.err.println(s + " " + t);
						}
					}
				}
			}
			
			println(ans.size());
		}
		// char[] map = new char[26];
		// Arrays.fill(map, '#');
		// for (int i = 0; i < 3; ++i) {
		// String a = reader.readLine();
		// String b = reader.readLine();
		// for (int j = 0; j < a.length(); ++j) {
		// if (a.charAt(j) == ' ') {
		// continue;
		// }
		// int c = a.charAt(j) - 'a';
		// char d = b.charAt(j);
		// if (map[c] != '#' && map[c] != d) {
		// throw new AssertionError();
		// }
		// map[c] = d;
		// }
		// }
		// map['z' - 'a'] = 'q';
		// map['q' - 'a'] = 'z';
		// System.err.println(new String(map));
	}

	private void run() {
		try {
			reader = new BufferedReader(new InputStreamReader(System.in));
			writer = new PrintWriter(new OutputStreamWriter(System.out));
			reader = new BufferedReader(new FileReader(TASKNAME + ".in"));
			writer = new PrintWriter(TASKNAME + ".out");

			solve();

			reader.close();
			writer.close();
		} catch (Exception e) {
			e.printStackTrace();
			System.exit(13);
		}
	}

	public static void main(String[] args) {
		long time = System.currentTimeMillis();
		Locale.setDefault(Locale.US);
		new Main().run();
		System.err.printf("%.3f\n", (System.currentTimeMillis() - time) * 1e-3);
	}

	private StringTokenizer tokenizer;
	private PrintWriter writer;
	private BufferedReader reader;

	private String nextToken() throws IOException {
		while (tokenizer == null || !tokenizer.hasMoreTokens()) {
			tokenizer = new StringTokenizer(reader.readLine());
		}
		return tokenizer.nextToken();
	}

	private int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}

	private long nextLong() throws IOException {
		return Long.parseLong(nextToken());
	}

	private double nextDouble() throws IOException {
		return Double.parseDouble(nextToken());
	}

	private void print(Object o) {
		writer.print(o);
	}

	private void println(Object o) {
		writer.println(o);
	}

	private void printf(String format, Object... args) {
		writer.printf(format, args);
	}
}
