/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.util.HashSet;

/**
 *
 * @author vandit
 */
public class RecycleNumbers {

    private HashSet<String> numbers = new HashSet<String>();
    private HashSet<String> initialTempNumbers = new HashSet<String>();
    private HashSet<String> finalTempNumbers = new HashSet<String>();

    HashSet<Pair> numberPairs = new HashSet<Pair>();


    private void findRecycledNumbers(int start, int end, int places) {


        for (int i = start; i <= end; i++) {
            String initialNumber = Integer.toString(i);
            //if (!(numbers.contains(initialNumber) || finalTempNumbers.contains(initialNumber))) {

                StringBuffer tempNumber = new StringBuffer(initialNumber);
                int len = tempNumber.length();
                int startIndexToMove = len - places;
                String tempString = tempNumber.substring(startIndexToMove);
                if ((places == 1 && tempString.equals("0")) || tempString.charAt(0) == '0') {
                    continue;
                }
                tempNumber.delete(startIndexToMove, len);
                String finalTempNumber = tempString + tempNumber.toString();

                if (! (finalTempNumber.equals(initialNumber) || Integer.parseInt(finalTempNumber) > end || Integer.parseInt(finalTempNumber) < Integer.parseInt(initialNumber))) {
                    numbers.add(initialNumber);
                    finalTempNumbers.add(finalTempNumber);
                    Pair pair = new Pair(finalTempNumber,initialNumber);
                    numberPairs.add(pair);
                }
            }

        

    }

    public HashSet<Pair> findAllRecycledNumbers(int start, int end) {
        int length = Integer.toString(start).length();
        for (int i = 1; i < length; i++) {
            findRecycledNumbers(start, end, i);
        }
        return numberPairs;
    }
}

import java.io.FileNotFoundException;
import java.util.Formatter;
import java.util.LinkedList;
import java.util.Scanner;


public class Main {
public static void main(String[] arg) throws FileNotFoundException
{
	Scanner scan =new Scanner(System.in);
	LinkedList<String> lilo=new LinkedList<String>();
	int t=scan.nextInt();
	for(int j=0;j<t+1;j++)
	{
		String str=scan.nextLine();
		lilo.add(str);
	}
	
	String[] str=lilo.toArray(new String[lilo.size()]);
	
	Formatter form=new Formatter("exoC.txt");
	for(int i=0;i<str.length;i++)
	{
		int u,v;
		try{
		String s=new String(str[i]);
		Scanner se=new Scanner(s);
		u=se.nextInt();
		v=se.nextInt();
		int q=calcul(u,v);
		int k=i;
		form.format("Case #"+k+": "+q+"\n");
		}catch(Exception e)
		{
			
		}
	}
	form.close();
	System.out.println("fin");
}
public static int calcul(int n,int m)
{
	int i=0;
	Methode met=new Methode();
	for(int j=n;j<=m;j++)
	{
		Integer v=new Integer(j);
		for(int k=j+1;k<=m;k++)
		{
			Integer u=new Integer(k);
			if((met.text(v.toString(), u.toString())))
			{
				i++;
			}
		}
	}
	return i;
}
}
