import java.io.*;
import java.util.*;

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

import java.awt.Point;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Set;

public class Prob2 {

	private static String doAlgorithm(String[] lines) {
		StringBuilder ans = new StringBuilder();
		int numCase = Integer.parseInt(lines[0]);
		for (int i = 0; i < numCase; i++)
			ans.append("Case #" + (i + 1) + ": ")
					.append(doActualAlgorithm(lines[i + 1])).append('\n');
		return ans.toString();
	}

	private static Point createAns(int x, int y) {
		if (x == y)
			throw new IllegalArgumentException();
		int lesser = Math.min(x, y);
		int more = Math.max(x, y);
		return new Point(lesser, more);

	}

	static String doActualAlgorithm(String s) {
		Set<Point> answerPair = new HashSet<Point>();
		String[] separated = s.trim().split(" ");
		int i1 = Integer.parseInt(separated[0]), i2 = Integer
				.parseInt(separated[1]);
		for (int i = i1; i <= i2; i++) {
			String stringForm = i + "";
			for (int j = 0; j < stringForm.length(); j++) {
				String testingString = stringForm.substring(j)
						+ stringForm.substring(0, j);
				if (testingString.charAt(0) == '0')
					continue;
				int testingInt = Integer.parseInt(testingString);
				if (testingInt <= i2 && testingInt >= i1 && testingInt != i)
					answerPair.add(createAns(i, testingInt));
			}
		}
		return answerPair.size() + "";
	}

	private static void initAlgorithm() {

	}

	public static void main(String[] args) throws IOException {
		File inputFile = new File("input.txt");
		File outputFile = new File("output.txt");
		FileReader reader = new FileReader(inputFile);
		BufferedReader br = new BufferedReader(reader);
		String line;
		ArrayList<String> input = new ArrayList<String>();
		while ((line = br.readLine()) != null) {
			input.add(line);
		}
		br.close();
		initAlgorithm();
		String output = doAlgorithm(input.toArray(new String[0]));
		FileWriter writer = new FileWriter(outputFile);
		writer.write(output.trim());
		writer.close();

	}
}
