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

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.util.Scanner;


public class C {
	String cycle(String s) {
		return s.substring(1) + s.charAt(0);
	}

	void run() {
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();
		for (int t=1; t<=T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();
			long res = 0;
			for (long i=A; i<=B; i++) {
				long cnt = 1;
				String str = String.valueOf(i);
				for (String nowstr = cycle(new String(str));
						!nowstr.equals(str); nowstr = cycle(nowstr)) {
					if (nowstr.charAt(0) != 0) {
						int nowint = Integer.parseInt(nowstr);
						if (nowint >= A && nowint <= B) {
							if (nowint < i) {
								cnt = 0;
								break;
							} else {
								cnt++;
							}
						}
					}
				}
				res += cnt*(cnt-1)/2;
			}
			System.out.println("Case #" + t + ": " + res);
		}
	}

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