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;
import java.util.Scanner;
import java.util.Set;

public class C {
    static String shift(String s) {
        return s.charAt(s.length() - 1) + s.substring(0, s.length() - 1);
    }

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int T = sc.nextInt();
        for (int t = 1; t <= T; ++t) {
            int A = sc.nextInt(), B = sc.nextInt(), count = 0;
            for (int n = A; n <= B; ++n) {
                String s0 = Integer.toString(n);
                Set<Integer> matches = new HashSet<Integer>();
                for (String s = shift(s0); !s.equals(s0); s = shift(s)) {
                    if (!s.startsWith("0")) {
                        int m = Integer.parseInt(s);
                        if (m >= A && m <= B)
                            matches.add(m);
                    }
                }
                count += matches.size();
            }
            System.out.printf("Case #%d: %d\n", t, count/2);
        }
    }
}
