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.*;

public class C implements Runnable {
	private MyScanner in;
	private PrintWriter out;

	private void solve() {
		int a = in.nextInt();
		int b = in.nextInt();
		int mul = 1;
		int pow = 0;
		while (a >= mul * 10) {
			mul *= 10;
			++pow;
		}
		int ans = 0;
		int[] lastSeen = new int[b + 1];
		for (int i = a; i <= b; ++i) {
			if (i == mul * 10) {
				mul *= 10;
				++pow;
			}
			int temp = i;
			for (int j = 0; j < pow; ++j) {
				temp = temp / 10 + mul * (temp % 10);
				if (temp > i && temp <= b && lastSeen[temp] < i) {
					++ans;
					lastSeen[temp] = i;
				}
			}
		}
		out.println(ans);
	}

	@Override
	public void run() {
		in = new MyScanner();
		try {
			out = new PrintWriter(new File("C-small-attempt0.out"));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		}
		int tests = in.nextInt();
		for (int i = 0; i < tests; ++i) {
			out.print("Case #" + (i + 1) + ": ");
			solve();
		}
		in.close();
		out.close();
	}

	public static void main(String[] args) {
		new C().run();
	}

	class MyScanner {
		private BufferedReader br;
		private StringTokenizer st;

		public MyScanner() {
			try {
				br = new BufferedReader(new FileReader("C-small-attempt0.in"));
			} catch (FileNotFoundException e) {
				e.printStackTrace();
			}
		}

		public void close() {
			try {
				br.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}

		public boolean hasNext() {
			while (st == null || !st.hasMoreTokens()) {
				try {
					String s = br.readLine();
					if (s == null) {
						return false;
					}
					st = new StringTokenizer(s);
				} catch (IOException e) {
					e.printStackTrace();
					return false;
				}
			}
			return st != null && st.hasMoreTokens();
		}

		private String next() {
			while (st == null || !st.hasMoreTokens()) {
				try {
					String s = br.readLine();
					if (s == null) {
						return null;
					}
					st = new StringTokenizer(s);
				} catch (IOException e) {
					e.printStackTrace();
					return null;
				}
			}
			return st.nextToken();
		}

		public String nextLine() {
			try {
				st = null;
				return br.readLine();
			} catch (IOException e) {
				e.printStackTrace();
				return null;
			}
		}

		public int nextInt() {
			return Integer.parseInt(next());
		}

		public long nextLong() {
			return Long.parseLong(next());
		}

		public double nextDouble() {
			return Double.parseDouble(next());
		}
	}
}