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.HashSet;

public class Recycled {

    public static void main (String[] args) {
        In in = new In("input.txt");
        int N = in.readInt();
        
        for (int i = 1; i <= N; i++) {
            int A = in.readInt();
            int B = in.readInt();
            int result = 0;
            
            for (Integer j = A; j < B; j++) {
                HashSet<String> hs = new HashSet<String>();
                String s = j.toString();
                int length = s.length();
                for (int k = 1; k < length; k++) {
                    String t = s.substring(k, length) + s.substring(0, k);
                    int newValue = Integer.parseInt(t);
                    if (newValue > j && newValue <=B) {
                        if (!hs.contains(t)) {
                            hs.add(t);
                            result++;
                        }
                    }
                }
            }
            System.out.println("Case #" + i + ": " + result);
        }
        
    }
}