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 cj2012.qual;

import java.io.File;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.TreeSet;

public class C {
	public static void main(String[] args) throws Exception {
		Scanner scan = new Scanner(new File("in/C-large.in"));
		int T = scan.nextInt();
		PrintWriter out = new PrintWriter(new File("out/C-large.txt"));
		for (int z = 1; z <= T; z++) {
			int A = scan.nextInt();
			int B = scan.nextInt();
			int D = 1 + (int) Math.log10(B);
			int C = (int) Math.pow(10, D - 1);
			int res = 0;
			TreeSet<Integer> set = new TreeSet<Integer>();
			for (int n = A; n <= B; n++) {
				for (int s = 1; s < D; s++) {
					int m = n;
					for (int k = 0; k < s; k++)
						m = (m % 10) * C + (m / 10);
					if (m < A || m > B || n >= m) continue;
					set.add(m);
				}
				res += set.size();
				set.clear();
			}
			out.println("Case #" + z + ": " + res);
		}
		out.close();
	}
}
