/*
 * 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 Mirror {
	public static void main(String[] args) throws IOException { 
		Scanner scan = new Scanner(new File("C-small-attempt0.in"));
		FileWriter fstream = new FileWriter("out.txt");
		BufferedWriter out = new BufferedWriter(fstream);
		int numCases = scan.nextInt();
		for (int z = 0; z < numCases; z++) {
			int low = scan.nextInt();
			int high = scan.nextInt();
			int count = 0;
			for (int i = low; i < high; i++) {
				String lows = "" + i;
				String[] arr = new String[lows.length() - 1];
				for (int k = 0; k < arr.length; k++) {
					lows = lows.charAt(lows.length()-1) + lows.substring(0, lows.length()-1);
					arr[k] = lows;
				}
				for ( int j = i + 1; j <= high; j++) {
					String highs = "" + j;
					for (int k = 0; k < arr.length; k++) {
						if (arr[k].equals(highs)) {
							count++;
							break;
						}
					}
				}
			}
			out.write("Case #" + (z+1) + ": " + count);
			if ( z != numCases - 1)
				out.newLine();
		}
		out.close();
	}
}