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.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Scanner;
import java.io.BufferedWriter;

public class D {
	public static void main(String[] args) throws IOException {
		int n;

		InputStreamReader reader = new InputStreamReader(new FileInputStream(
				args[0]));
		BufferedReader read = new BufferedReader(reader);
		BufferedWriter write = new BufferedWriter(new OutputStreamWriter(
				new FileOutputStream(args[1])));

		// Scanner scan = new Scanner(System.in);
		n = Integer.parseInt(read.readLine());
		// n = scan.nextInt();
		for (int i = 0; i < n; i++) {
			String p = read.readLine();
			write.write("Case #" + (i + 1) + ": " + holy(p, read));
			write.newLine();
		}
		write.flush();
		write.close();
	}

	static int holy(String r, BufferedReader read) throws IOException {
	    String p = r;
        String s, temp, m;
        int a = 0;
        int b = 0;
        int panjang = 0;
        int result = 0;

        a = Integer.parseInt(p.substring(0, p.indexOf(" ")));
        b = Integer.parseInt(p.substring(p.indexOf(" ") + 1, p.length()));

        for (int i = a; i <= b; i++) {
            s = Integer.toString(i);
            panjang = s.length();
            for (int j = 1; j < panjang; j++) {
                temp = s.substring(0, j);
                m = s.substring(j, panjang) + temp;
                if (Integer.parseInt(m) == i) {
                } else 
                if (Integer.parseInt(m) <= b && Integer.parseInt(m) >= a) {
                    result++;
                }
            }
        }
        
        if ((result % 2) == 0) {
            result = result/2;
        } else
        if (result % 2 == 1) {
            result = result/2+1;
        }
        
        return result;
	}
}