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();
    }
}

package qual2012;

import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class C {

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in);
		//PrintWriter out = new PrintWriter(System.out);
		PrintWriter out = new PrintWriter(new FileWriter("C.out"));

		for (int t = in.nextInt(), cs = 1; t > 0; t--, cs++) {
			out.print("Case #" + cs + ": ");
			int a = in.nextInt(), b = in.nextInt();
			long ans = 0;
			for (int i = a; i <= b; i++) {
				ans += go(i, a);
			}
			out.println(ans);
		}
		
		out.flush();
	}

	static long go(int x, int low) {
		String s = x + "";
		Set<Integer> set = new HashSet<Integer>();
		for (int i = 1; i < s.length(); i++) {
			String w = s.substring(i) + s.substring(0, i);
			if (w.startsWith("0")) continue;
			int y = Integer.valueOf(w);
			if (low <= y && y < x) set.add(y);
		}
		return set.size();
	}
}
