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.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.ArrayList;

public class C {

	public static long convert(String input) {
		long output = 0;
		String[] pairs = input.split(" ");
		String first = pairs[0];
		String second = pairs[1];
		if (first.length() != 1) {
			long firstInt = Long.parseLong(first);
			long secondInt = Long.parseLong(second);
			for (long k = firstInt; k < secondInt; k++) {
				String firstNum = k + "";
				if (!same(firstNum)) {
					int len = firstNum.length();
					for (int i = 0; i < len - 1; i++) {
						char lastChar = firstNum.charAt(len - 1);
						String newFirstNum = lastChar
								+ firstNum.substring(0, len - 1);
//						 System.out.println(firstNum + "---" +
//								 newFirstNum);
//						list2.add(newFirstNum);
						long secondNum = Long.parseLong(newFirstNum);
						if ((secondNum + "").length() == firstNum.length()) {
							if (secondNum <= secondInt && secondNum > k
									) {
								output++;
//								 System.out.println(k + "---" +
//										 secondNum);
							}
						}
						firstNum = newFirstNum;
					}
				}
			}
		}

		return output;
	}


	private static boolean same(String s) {
		for (int i = 0; i < s.length() - 1; i++) {
			if (s.charAt(i) != s.charAt(i + 1))
				return false;
		}
		return true;
	}

	public static void main(String[] args) {
		String inputFile = "C-large.in";
		String outPutFile = "C-large.out";
		try {
			FileInputStream fstream = new FileInputStream(inputFile);
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			FileWriter fstream2 = new FileWriter(outPutFile);
			BufferedWriter out = new BufferedWriter(fstream2);
			String strLine;
			strLine = br.readLine();
			int casesNum = Integer.parseInt(strLine);
			for (int i = 0; i < casesNum; i++) {
				strLine = br.readLine();
				String parse = "Case #" + (i + 1) + ": " + convert(strLine);
				System.out.println(parse);
				if (i < casesNum - 1)
					parse += "\n";
				out.write(parse);
			}
			in.close();
			out.close();
		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
		}

	}

}
