import java.util.HashSet;
import java.util.Scanner;

public class C {

	static HashSet p = new HashSet();
	static int low;
	static int high;
	int count = 0;

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);
		int no = sc.nextInt();

		for (int i = 1; i <= no; i++) {

			p.clear();
			low = sc.nextInt();
			high = sc.nextInt();

			for (int l = low; l <= high; l++) {
				recycle(l);
			}
			System.out.println("Case #" + i + ": " + p.size());

		}
	}

	public static void recycle(int no) {

		String s = Integer.toString(no);
		for (int i = 0; i < s.length(); i++) {
			String rec = s.substring(i) + s.substring(0, i);
			int r = Integer.parseInt(rec);
			if (r != no && r >= low && r <= high) {
				int min = Math.min(r, no);
				int max = Math.max(r, no);
				String a = Integer.toString(min) + "" + Integer.toString(max);
				p.add(a);

			}
		}

	}
}


import java.io.BufferedReader;
import java.io.FileReader;
import java.io.PrintStream;
import java.util.HashSet;

/**
 *
 * @author peterboyen
 */
public class RecycledNumbers {

    public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new FileReader("/Users/peterboyen/Downloads/C-large.in"));

        String line = br.readLine();

        int testCases = Integer.parseInt(line);

        PrintStream ps = new PrintStream("/Users/peterboyen/Downloads/C-large.out");
        for (int i = 1; i <= testCases; i++) {
            line = br.readLine();

            ps.println("Case #" + i + ": " + solve(line));
        }

        br.close();
        ps.close();
    }

    private static int solve(String line) {
        String[] split = line.split(" ");
        int A = Integer.parseInt(split[0]);
        int B = Integer.parseInt(split[1]);

        int result = 0;
        for (int m = A + 1; m <= B; m++) {
            result += getRecycled(m, A);
        }

        return result;
    }

    private static int getRecycled(int m, int A) {
        String M = "" + m;

        HashSet<Integer> set = new HashSet<Integer>();

        int result = 0;
        for (int i = 0; i < M.length() - 1; i++) {
            M = M.substring(1) + M.charAt(0);
            if (M.charAt(0) != '0') {
                int n = Integer.parseInt(M);
                if (n >= A && n < m && !set.contains(n)) {
                    result++;
                    set.add(n);
                }
            }
        }

        return result;
    }
}
