import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {
	final static String FILENAME = "C-small-attempt0";

	public static void main(String[] args) throws Exception {
		Scanner sc = new Scanner(new FileReader("/home/workshop/Documents/"
				+ FILENAME + ".in"));
		BufferedWriter bw = new BufferedWriter(new FileWriter(
				"/home/workshop/Documents/" + FILENAME + ".out"));
		int T = sc.nextInt();
		sc.nextLine();
		for (int ttt = 0; ttt < T; ttt++) {
			int A = sc.nextInt();
			int B = sc.nextInt();

			int count = 0;
			int digits = new Double(Math.floor(Math.log10(A) + 1)).intValue();
			for (int num = A; num < B; num++) {
				Set<Integer> hs = new HashSet<Integer>();
				for (int lastdigits = 1; lastdigits < digits; lastdigits++) {
					int tailmask = new Double(Math.pow(10, lastdigits))
							.intValue(), headmask = new Double(Math.pow(10,
							digits - lastdigits)).intValue();
					int newnum = num / tailmask + (num % tailmask) * headmask;
					if (num < newnum && !hs.contains(newnum) && newnum <= B) {
						// System.out.println(num + "\t" + newnum);
						count++;
						hs.add(newnum);
					}
				}
				// if (y < z) {
				// System.out.println(num + "\t(1)");
				// count++;
				// }
				// if (x < z || (x == z && x > y)) {
				// System.out.println(num + "\t(2)");
				// count++;
				// }
				// if (x < y && y != z) {
				// System.out.println(num + "\t(3)");
				// count++;
				// }
				// if (x < y && x != z) {
				// System.out.println(num + "\t(4)");
				// count++;
				// }
				// if (x < z || (x == z && x > y)) {
				// int newnum = z * 100 + x * 10 + y;
				// if (newnum <= B) {
				// System.out.println(num + "\t" + newnum + "\t(2)");
				// count++;
				// }
				// }
				// if (x < y || (x == y && y < z)) {
				// int newnum = y * 100 + z * 10 + x;
				// if (newnum <= B) {
				// System.out.println(num + "\t" + newnum + "\t(4)");
				// count++;
				// }
				// }
			}

			bw.write("Case #" + (ttt + 1) + ": " + count);
			bw.newLine();
		}
		bw.close();
		sc.close();
	}
}
