import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

package com.google.codejam.recycle;

import java.io.FileReader;
import java.io.IOException;
import java.io.LineNumberReader;
import java.util.LinkedList;
import java.util.List;


/**
 * Class to read input file and prepare list of test cases.
 * @author Sushant Deshpande
 */
public class InputReader {
    /**
     * Method for preparing List of Test Cases.
     * @param inputFilePath String
     * @return List<TestCase>
     */
    public static List<TestCase> prepareTestCases(final String inputFilePath)  {
        final List<TestCase> testCases = new LinkedList<TestCase>();
        LineNumberReader lineReader = null;
        try {
            lineReader = new LineNumberReader(new FileReader(inputFilePath));
            final String line = lineReader.readLine();
            final int noOfTCs = Integer.parseInt(line);
            for(int i = 0; i < noOfTCs; i++) {
                String [] inputLine = lineReader.readLine().split(" ");
                int low = Integer.parseInt(inputLine[0]);
                int high = Integer.parseInt(inputLine[1]);
                TestCase testCase = new TestCase(i + 1, low, high);
                testCases.add(testCase);
            }
        } catch(IOException ie) {
              System.out.println("Problem occured while reading input file. " + ie.getMessage());
        } finally {
            if(lineReader != null) {
                try {
                    lineReader.close();
                } catch(IOException ie) {
                    System.out.println("Some problem occured while closing input file reader " + ie.getMessage() );
                }
            }
        }
        return testCases;
    }
}