/*
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 * 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.*;
import java.util.*;
class RecycledNumbers
{
    public static void main(String args[]) throws Exception
    {
        Scanner in = new Scanner(new File("C-small-attempt0.in"));
        int t = Integer.parseInt(in.nextLine());
        for(int x = 1; x <= t; x++)
        {
            String st = in.nextLine();
            int a, b;
            a = Integer.parseInt(st.split(" ")[0]);
            b = Integer.parseInt(st.split(" ")[1]);
            int y = 0;
            if(a >= 10)
            {
                for(int i = a; i < b; i++)
                {
                    int n, m;
                    n = i;
                    String tmp = "" + n;
                    for(m = (n + 1); m <= b; m++)
                    {
                        for(int j = 1; j < tmp.length(); j++)
                        {
                            int tt = getNew(n, j);
                            if(tt == m && ("" + tt).length() == ("" + m).length() && a <= n && n < m && m <= b)
                            y++;
                        }
                    }
                }
            }
            System.out.println("Case #" + x + ": " + y);
        }
    }
    public static int getNew(int n, int a)
    {
        String s = "" + n;
        int  p = s.length() - a;
        String s2 = s.substring(p);
        String s3 = s.substring(0, p);
        s = s2 + s3;
        return Integer.parseInt(s);
    }
}