import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.lang.Integer;
import java.util.HashSet;
import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) throws FileNotFoundException {
		Scanner in = new Scanner(new BufferedReader(new FileReader("input.in")));
		int x = new Integer(in.nextLine());
		HashSet<Integer> visited = new HashSet<Integer>();
		for (int xi = 1; xi <= x; xi++) {
			String[] token = in.nextLine().split(" ");
			int min = Integer.parseInt(token[0]);
			int max = Integer.parseInt(token[1]);
			int count = 0;
			for (int i = min; i <= max; i++) {
				String s = Integer.toString(i);

				for (int j = 0; j < Integer.toString(min).length(); j++) {
					Integer recycle = Integer.parseInt(s.substring(j)
							+ s.substring(0, j));
					if (!visited.contains(recycle))
						if (recycle < i && recycle >= min && recycle <= max)
							count++;
					visited.add(recycle);
				}
				visited.clear();
			}
			System.out.print("Case #" + xi + ": ");
			System.out.println(count);
		}

	}
}