import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}

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

import java.io.*;
import java.util.Scanner;
import javax.swing.JOptionPane;

/**
 *
 * @author nick
 */
public class ProbC {

    public static int numLines = 0;
    public static String[] dataLine;
    public static String[] outLine;

    public static void main(String[] args) throws UnsupportedEncodingException, IOException {

        // input

        //JOptionPane.showMessageDialog(null, "This program provides a decrypter for Google's third CodeJam question: Recycled Numbers.");

        getInput();

        decode();

        writeOutput();

    }

    private static void getInput() throws FileNotFoundException {
        Scanner scanner = new Scanner(new FileInputStream("input.txt"));
        try {
            numLines = Integer.parseInt(scanner.nextLine());
            dataLine = new String[numLines];
            outLine = new String[numLines];
            for (int i = 0; i < numLines; i++) {
                dataLine[i] = scanner.nextLine();
            }
        } finally {
            scanner.close();
        }
    }

    private static void writeOutput() throws UnsupportedEncodingException, FileNotFoundException, IOException {
        Writer out = new OutputStreamWriter(new FileOutputStream("output.txt"));
        try {
            String outText = "";
            for (int i = 0; i < numLines; i++) {
                outText = outText + outLine[i] + "\n";
            }
            out.write(outText);
        } finally {
            out.close();
        }
    }

    private static void decode() {

        for (int i = 0; i < numLines; i++) {


            Scanner sc = new Scanner(dataLine[i]);
            String numOneString = sc.next();
            String numTwoString = sc.next();
            sc.close();
            int numOneInt = Integer.parseInt(numOneString);
            int numTwoInt = Integer.parseInt(numTwoString);
            int length = numOneString.length();
            int setLength = numTwoInt - numOneInt;
            String tempString = "";
            int tempInt = 0;

            int answer = 0;

            int[] answers = new int[numTwoInt];


            tempInt = numOneInt;


            for (int ii = 0; ii < setLength; ii++) {

                tempString = "" + tempInt;


                for (int iii = 0; iii < length; iii++) {


                    tempString = tempString.substring(1) + tempString.charAt(0);


                    if (Integer.parseInt(tempString) >= tempInt & Integer.parseInt(tempString) <= numTwoInt) {
                        if (Integer.parseInt(tempString) != tempInt) {
                            
                            answer++;

                        }
                    }
                }

                tempInt++;
            }

            outLine[i] = "Case #" + (i + 1) + ": " + answer;

        }

    }
}
