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.util.Scanner;

public class prob_3 {

	public static void main(String[] args) {

		Scanner in = new Scanner(System.in);
		int cases = in.nextInt();

		for (int index = 0; index < cases; index++) {
			int A = in.nextInt();
			int B = in.nextInt();
			int possiblePermutations = (A + "").length() - 1;

			String parse;
			int count = 0;
			int m;

			int[] perms;
			for (int n = A; n < B; n++) {
				perms = new int[possiblePermutations];
				for (int i = 0; i < possiblePermutations; i++) {
					parse = n + "";
					parse = parse.substring(i + 1) + parse.substring(0, i + 1);
					m = Integer.parseInt(parse);
					perms[i] = m;
					if ((n < m) && (m <= B))
						if (counted(perms, i))
							count++;
				}
			}
			System.out.println("Case #" + (index + 1) + ": " + count);
		}
	}

	private static boolean counted(int[] perms, int i) {
		for (int j = 0; j < i; j++)
			if (perms[i] == perms[j])
				return false;

		return true;
	}
}