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.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {

	private static BufferedReader bufferedReader = new BufferedReader(
			new InputStreamReader(System.in));

	public static void main(String[] args) throws IOException {
		String line = bufferedReader.readLine();
		int cases = Integer.parseInt(line);

		for (int i = 1; i <= cases; i++) {
			line = bufferedReader.readLine();
			String[] split = line.split(" ");

			int A = Integer.parseInt(split[0]);
			int B = Integer.parseInt(split[1]);

			HashSet<String> usedPairs = new HashSet<String>();

			int answer = 0;
			int duplicates = 0;
			if (B > 10) {
				for (int j = A; j < B; j++) {
					String number = "" + j;
					// System.err.println("Current number: " + number);
					for (int k = 0; k < number.length(); k++) {
						String rotated = number.substring(k)
								+ number.substring(0, k);
						// System.err.println("Rotated number: " + rotated);
						int a = Integer.parseInt(number);
						int b = Integer.parseInt(rotated);

						if (Math.min(a, b) >= A && a != b
								&& Math.max(a, b) <= B) {
							String hashKey;
							if (a < b) {
								hashKey = number + rotated;
							} else {
								hashKey = rotated + number;
							}
							if (!usedPairs.contains(hashKey)) {
								answer++;
								usedPairs.add(hashKey);
								// System.err.println("Found a new pair!");
							} else {
								/*
								 * System.err
								 * .println("Found a duplicate: Number - " +
								 * number + ", Rotated: " + rotated);
								 */
								duplicates++;
							}
						}
					}
				}
			}
			// System.err.println("Found " + duplicates + " duplicated pairs");
			System.out.println("Case #" + i + ": " + answer);
		}
	}

}
