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

public class Recycled
{
	public static void main(String[] sArgs)throws IOException
	{
		Scanner oScan = new Scanner(new File("recycled.in"));
		PrintWriter out = new PrintWriter("recycled.out");

		int o_0 = oScan.nextInt();oScan.nextLine();
		for(int o_o=1;o_o<=o_0;o_o++)
		{
			int A = oScan.nextInt(),B=oScan.nextInt();
			int count=0,base=0;
			for(int i=1;i<=A;i*=10)base+=i;
			for(int i=A;i<B;i++)
			{
				String s = new String(i+"");
				ArrayList<Integer> nums = new ArrayList<Integer>();
				if(i%base==0)
				{
					//System.out.println("same "+i);
					continue;
				}
				for(int j=1;j<s.length();j++)
				{
					String newS = s.substring(j)+s.substring(0,j);
					if(newS.charAt(0)=='0')continue;
					int rec = new Integer(newS);
					if(rec>i&&rec<=B&&!nums.contains(rec)){count++;nums.add(rec);}
				}
			}
			out.println("Case #"+o_o+": "+count);
		}

		out.close();
	}
}