
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;
import java.io.File;
import java.io.IOException;
import java.io.FileWriter;
import java.io.BufferedWriter;

public class Recycle
{
	public static void main(String[] args)
	{
/*		Set<Integer> perms = getPermutations(123456);
		
		for(Integer i: perms)
			System.out.println(i);*/
	
		try
		{
			Scanner s = new Scanner(new File("recycle.in"));
			BufferedWriter w = new BufferedWriter(new FileWriter(new File("recycle.out")));
			int numCases = s.nextInt();
			s.nextLine();
			
			for(int n = 1;n <= numCases; n++)
			{
				int A = s.nextInt();
				int B = s.nextInt();
				int count = 0;
				for(int k = A; k <= B; k++)
				{
					count += getNumPairs(k, B);
				}
				
				w.write("Case #" + n + ": " + count + "\n");
			}
			
			w.flush();
			w.close();
		}
		catch (IOException e)
		{
			e.printStackTrace();
		}
	}
	
	public static int getNumPairs(int n, int B)
	{
		Set<Integer> possibles = getPermutations(n);
		int count = 0;
		for(Integer i : possibles)
			if(i > n && i <= B)
				count++;
		return count;
	}
	
	public static Set<Integer> getPermutations(int n)
	{
		Set<Integer> perms = new TreeSet<Integer>();
		char[] digits = String.valueOf(n).toCharArray();
		
		for(int firstPos = 1; firstPos < digits.length; firstPos++)
		{
			String toBuild = "";
			for(int k = 0; k < digits.length; k++)
				toBuild += digits[(firstPos + k) % digits.length];
			perms.add(Integer.parseInt(toBuild));
		}
		return perms;
	}
	

}
/**
 * Copyright 2012 Christopher Schmitz. All Rights Reserved.
 */

package com.isotopeent.codejam.lib.converters;

import com.isotopeent.codejam.lib.InputConverter;

public class MultiLineConverter implements InputConverter<Object[]> {

	private InputConverter<?>[] converters;
	private int count;

	private Object[] input;
	private int lineNumber;

	public MultiLineConverter(InputConverter<?> lineConverter, int count) {
		this.converters = new InputConverter<?>[count];
		this.count = count;
		for (int i = 0; i < count; i++) {
			converters[i] = lineConverter;
		}
	}

	public MultiLineConverter(InputConverter<?>[] lineConverters) {
		this.converters = lineConverters;
		this.count = lineConverters.length;
	}

	@Override
	public boolean readLine(String data) {
		if (lineNumber == 0) {
			input = new Object[count];
		}
		InputConverter<?> converter = converters[lineNumber];
		if (!converter.readLine(data)) {
			input[lineNumber++] = converter.generateObject();
		}

		if (lineNumber >= input.length){
			lineNumber = 0;
		}
		return lineNumber != 0;
	}

	@Override
	public Object[] generateObject() {
		return input;
	}

}
