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.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Scanner;


public class RecycledNumbersC {

	static int[] matches;
	static int A, B;
	
	public static void main(String[] args) {
//		Scanner sc = new Scanner(System.in);
		Scanner sc;
		try {
			sc = new Scanner(new FileInputStream("C-large.in"));
		} catch (FileNotFoundException e) {
			sc = new Scanner(System.in); // file not exist, so get input from console
		}
		
		Writer out;
		try {
			out = new OutputStreamWriter(new FileOutputStream("C-large.out"));
		} catch (FileNotFoundException e) {
			out = new OutputStreamWriter(System.out); // use console
		}
		
		int T = sc.nextInt();

		for (int t = 0; t < T; t++) {
			A = sc.nextInt();
			B = sc.nextInt();
			int count = 0;
			
			matches = new int[B];

			for (int i = B; i > A; i--)
				findMatches(i, A);
//				count += findMatches(i, A);
			
			count = countMatches();

			// output
			System.out.println("Case #" + (t + 1) + ": " + count);
			try {
				out.write("Case #" + (t + 1) + ": " + count + "\n");
			} catch (IOException e) {
				// do nothing
			}
		}

		try {
			out.close();
		} catch (IOException e) {
			// do nothing
		}
	}
	
	@SuppressWarnings({ "unchecked", "rawtypes" })
	static void findMatches(Integer input, int min) {
		String number = input.toString();
		ArrayList<Integer> checkNums = new ArrayList<Integer>();
		
		for (int i = 1; i < number.length(); i++) {
			number = digitShift(number);
			Integer nextInt = Integer.parseInt(number);
			if (!checkNums.contains(nextInt))
				checkNums.add(nextInt);
		}
		
		Comparator desc = Collections.reverseOrder();
		Collections.sort(checkNums, desc);
		
		for (Integer n : checkNums) {
			if (n < input && n >= min) {
				matches[n]++;
			}
		}
	}
	
	static int countMatches() {
		int count = 0;
		for (int i = 0; i < B; i++)
			count += matches[i];
		return count;
	}

	static String digitShift(String input) {
		return input.substring(1).concat(input.substring(0, 1));
	}

}
