/*
 * 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.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;


public class Main {

	/**
	 * @param args
	 * @throws FileNotFoundException 
	 */
	public static void main(String[] args) throws FileNotFoundException {
		Scanner in = new Scanner(new File("input.txt"));
		
		int testcases = in.nextInt();
		int a, b, count;
		String aString, bString;
		ArrayList<String> compList = new ArrayList<String>();
		
		for(int test=1; test<=testcases; test++)
		{
			a = in.nextInt();
			b = in.nextInt();
			count = 0;
			
			while(a<b)
			{
				compList = new ArrayList<String>();
				aString = String.valueOf(a);
				
				for(int i=1; i<aString.length(); i++)
				{
					compList.add(aString.substring(aString.length()-i, aString.length())+aString.substring(0,aString.length()-i));
				}
				
				for(int i=a+1; i<=b; i++)
				{
					bString = String.valueOf(i);
					
					for(String s : compList)
					{
						if (bString.equals(s) && s.indexOf("0")!=0)
						{
							count++;
						}
					}
				}
				a++;
			}
			
			System.out.println("Case #"+test+": "+count);
			
		}

	}

}
