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;
	}

}

import java.io.*;
import java.util.Scanner;

public class Problem3 {
    public static void main(String[] args) {
        try {
            Scanner inputReader = new Scanner(new File("S:\\input.in"));
            int inputCases = inputReader.nextInt();
            PrintWriter outputWriter = new PrintWriter("S:\\output.in");
            for (int currentInputCase = 0; currentInputCase < inputCases; currentInputCase++) {
                String markUpString = "";
                int milestone = 0;
                int firstA = inputReader.nextInt();
                int secondB = inputReader.nextInt();
                for (int currentN = firstA; currentN < secondB; currentN++) {
                    String n = currentN + "";
                    for (int i = 1; i <= n.length() - 1; i++) {
                        String trimString = n.substring(n.length() - i, n.length()) + n.substring(0, n.length() - i);
                        if (!trimString.startsWith("0")) {
                            if (!n.equals(trimString)) {
                                int trimmedInt = Integer.parseInt(trimString);
                                if (trimmedInt <= secondB && trimmedInt > (Integer.parseInt(n))) {
                                    if (!markUpString.contains(n + "#" + trimString)) {
                                        markUpString += (n + "#" + trimString + ",");
                                        milestone++;
                                    }
                                }
                            }
                        }
                    }
                }
                outputWriter.write("Case #" + (currentInputCase + 1) + ": " + milestone + "\n");
            }
            outputWriter.flush();
            outputWriter.close();
        } catch (Exception e) {

        }
    }

}
