import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {

	public static int f(int x, int min, int max) {
		String s = Integer.toString(x);
		String s2 = null;

		Set<Integer> set = new HashSet<Integer>();
		for (int i = 1; i < s.length(); i++) {
			s2 = s.substring(i) + s.substring(0, i);
			if (Integer.valueOf(s2) > x && Integer.valueOf(s2) <= max && Integer.toString(Integer.valueOf(s2)).length() == s.length()) {
				set.add(Integer.valueOf(s2));
			}
		}
		return set.size();
	}

	public static void main(String[] args) throws Exception {
		System.setOut(new PrintStream("zz"));

		Scanner s = new Scanner(System.in);
		int T = s.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = s.nextInt();
			int B = s.nextInt();

			System.err.println(t);
			int n = 0;
			for (int x = A; x < B; x++) {
				n += f(x, A, B);
			}
			System.out.println("Case #" + t + ": " + n);
		}

	}
}
