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();
    }
}

/**
 * 
 */
package code.google.codejam;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;

/**
 * @author sunilkumarp
 *
 */
public abstract class Template {
	
	int testcases = 0;
	
	int casePoniter = 0;
	
	PrintWriter writer = null;
	
	BufferedReader reader = null;
	
	String line = null;
	
	int linePointer = -1;
	
	int linePerTestCase = 1;
	
	char lastChar = '!';
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try {
			Template template = (Template) Class.forName(args[1]).newInstance(); 
			template.start(args);
		} catch (Exception e) {
			System.out.println(e.getMessage());
			e.printStackTrace(System.out);
		}

	}



	/**
	 * @param args
	 */
	protected void start(String[] args) {
		InputStream io = null;
		OutputStream os = null;
		
		
		
		try {
			
			io = Template.class.getResourceAsStream(args[0]);
			reader = new BufferedReader(new InputStreamReader (io));
			os = new FileOutputStream(new File(args[0].substring(0, args[0].length() -2 )+ "out"));
			writer = new PrintWriter(os);
			testcases = Integer.valueOf(reader.readLine());
			
			solveProblem();
			
			
		} catch (Exception e) {
			System.out.println(e.getMessage());
			e.printStackTrace(System.out);
		} finally {
			try {
				writer.flush();
				writer.close();
			} catch (Exception e) {
				System.out.println(e.getMessage());
				e.printStackTrace(System.out);
			}

			try {
				reader.close();
			} catch (Exception e) {
				System.out.println(e.getMessage());
				e.printStackTrace(System.out);
			}

			try {
				io.close();
			} catch (Exception e) {
				System.out.println(e.getMessage());
				e.printStackTrace(System.out);
			}

			try {
				os.flush();
				os.close();
			} catch (Exception e) {
				System.out.println(e.getMessage());
				e.printStackTrace(System.out);
			}
		}
	}

	public void solveProblem() throws Exception {
		long sTime = System.nanoTime();
		for (;++casePoniter <= testcases;) {
			long sTimeCase = System.nanoTime();
			writeOutput(casePoniter, solveProblemForATestCase());
			System.out.println("Time taken for test case" + "[" + casePoniter + "]:" + (System.nanoTime() - sTimeCase));
		}

		System.out.println("Total time for all test cases:" + (System.nanoTime() - sTime));
	}
	
	protected Object solveProblemForATestCase() throws Exception {
		initializeTestCase();
		printInput();
		return doSolveProblem();
	}

	protected abstract Object doSolveProblem() throws Exception;

	protected abstract void printInput() throws Exception;

	protected abstract void initializeTestCase() throws Exception;

	protected void writeOutput (int caseNo, Object result) {
		String str = "Case #" + caseNo + ": " + result;
		System.out.println("==========" + str + "=============");
		writer.println(str);
	}
	
	public char readChar() throws IOException {
		return lastChar = (char)reader.read();
	}
	
	public char readCharFromLine() throws IOException {
		int length = line.length();
		
		if (linePointer >= length - 1) {
			throw new IllegalStateException("Line has already ended.");
		}
		
		return line.charAt(++linePointer);
	}
	
	public String readLine() throws IOException {
		line = reader.readLine();
		linePointer = -1;
		return line;
	}
	
	public int readNextInteger() {
		int val = 0;
		int length = line.length();
		
		if (linePointer >= length) {
			throw new IllegalStateException("Line has already ended.");
		}
		
		while(++linePointer < length) {
			if (Character.isDigit(lastChar = line.charAt(linePointer))) {
				val = val * 10 + Character.digit(lastChar, 10);
			} else {
				break;
			}
		}
		
		return val;
	}
	
}
