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.*;

public class Main {
	public static void main(String[] args) {
		Main m = new Main();
		try {
			FileInputStream fstream = new FileInputStream("C-small-attempt2.in");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine = br.readLine();
			int x = Integer.parseInt(strLine);
			int result;
			String[] a;
			for (int j = 0; j < x; j++) {
				System.out.print("Case #" + (j + 1) + ": ");
				strLine = br.readLine();
				a = strLine.split(" ");
				result = 0;
					int first = Integer.parseInt(a[0]);
					int second = Integer.parseInt(a[1]);
					
					for (int i = first; i < second; i++) {
						for (int k = i + 1; k <= second; k++) {

							boolean b = m.check(i + "", k + "");
							if (b)
								result++;
						}
					}
				System.out.println(result);
			}
			in.close();
		} catch (Exception e) {// Catch exception if any
			System.err.println("error");
		}
	}

	private boolean check(String i, String k) {
		boolean b = false;

		for (int j = k.length() - 1; j >= 0; j--) {

			k = k.charAt(k.length() - 1) + "" + k.substring(0, k.length() - 1);

			if (k.equalsIgnoreCase(i)) {
				b = true;
				break;
			}
			if (b) break;
		}

		return b;
	}
}