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 Pilot {

	int Globe_k = 0;
	int max_units = 30;

	public static void main(String[] args) {
		Pilot my = new Pilot();

		Calendar cal1 = Calendar.getInstance();
		my.doAll();
		Calendar cal2 = Calendar.getInstance();
		// System.out.println("seconds : " + (cal2.getTimeInMillis() -
		// cal1.getTimeInMillis())/1000);
	}
	private static void doME(Vector<Integer> combination) {
		System.out.println(combination.toString());
	}
	public void doAll() {
		try {

			String out = "";

			FileInputStream fstream = new FileInputStream("in.txt");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine = "";

			int glob = Integer.parseInt(strLine = br.readLine());

			for (int j = 0; j < glob; j++) {

				
				
				
				Vector<Vector<Integer>> results = new Vector<Vector<Integer>>();
				
				strLine = br.readLine();
				String[] splitted = strLine.split(" ");
				int A = Integer.parseInt(splitted[0]);
				int B = Integer.parseInt(splitted[1]);

				int num = 0;

				for (int k = A; k <= B; k++) {
					int L = Integer.toString(k).length();
					int e = L - 1;
					int C = k;
					Integer[][] T = new Integer[L][2];

					for (int i = 0; i < L; i++) {
						T[i][0] = (C % 10);
						C /= 10;
						T[i][1] = i;
					}

					for (int i = 0; i < e; i++) {
						for (int q = 0; q < L; q++) {
							T[q][1] = (q + e - i) % L;
						}

						// for (int u = 0; u < L; u++)
						// System.out.println(T[u][0] + " " + T[u][1]);

						int n = k;
						int m = 0;
						for (int q = 0; q < L; q++)
							m += T[q][0] * (int) Math.pow(10, T[q][1]);

						if (A <= n && n < m && m <= B) {
							Vector<Integer> combination = new Vector<Integer>();;
							combination.addElement(n);
							combination.addElement(m);
							if (!results.contains(combination)) {
								//doME(combination);
								results.addElement(combination);
								//System.out.println(k + " - " + m);
								num++;
							}
							
						}
						// System.out.println("---");
					}
					
					
					
					
					
					
					
					
				}
				out += ("Case #" + (j + 1) + ": " + num + "\n");
			}
			in.close();
			out = out.trim();

			Writer output = null;
			File file = new File("out.out");
			output = new BufferedWriter(new FileWriter(file));
			output.write(out);
			output.close();

			System.out.print(out);

		} catch (Exception e) {
			System.err.println("Error: " + e.getMessage());
			
			
		}
	}
}
