Problem: It's holiday. Mashmokh and his boss, Bimokh, are playing a game invented by Mashmokh. 

In this game Mashmokh writes sequence of n distinct integers on the board. Then Bimokh makes several (possibly zero) moves. On the first move he removes the first and the second integer from from the board, on the second move he removes the first and the second integer of the remaining sequence from the board, and so on. Bimokh stops when the board contains less than two numbers. When Bimokh removes numbers x and y from the board, he gets gcd(x, y) points. At the beginning of the game Bimokh has zero points.

Mashmokh wants to win in the game. For this reason he wants his boss to get exactly k points in total. But the guy doesn't know how choose the initial sequence in the right way. 

Please, help him. Find n distinct integers a1, a2, ..., an such that his boss will score exactly k points. Also Mashmokh can't memorize too huge numbers. Therefore each of these integers must be at most 109.

Input

The first line of input contains two space-separated integers n, k (1 ≤ n ≤ 105; 0 ≤ k ≤ 108).

Output

If such sequence doesn't exist output -1 otherwise output n distinct space-separated integers a1, a2, ..., an (1 ≤ ai ≤ 109).

Examples

Input

5 2


Output

1 2 3 4 5


Input

5 3

Output

2 4 3 7 1

Input

7 2


Output

-1

Note

gcd(x, y) is greatest common divisor of x and y.

Solution (in JAVA):

Solution:
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.TreeSet;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.StringTokenizer;
import java.io.Writer;
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 * @author zodiacLeo
 */
public class Main
{
    public static void main(String[] args)
    {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        FastScanner in = new FastScanner(inputStream);
        FastPrinter out = new FastPrinter(outputStream);
        TaskC solver = new TaskC();
        solver.solve(1, in, out);
        out.close();
    }

    static class TaskC
    {
        private int N = ((int) 2e6);
        private TreeSet<Integer> primes = new TreeSet<>();

        public void solve(int testNumber, FastScanner in, FastPrinter out)
        {
            createSieve();
            int n = in.nextInt();
            int k = in.nextInt();

            if (k == 0)
            {
                if (n == 1)
                {
                    out.println(1);
                    return;
                } else
                {
                    out.println(-1);
                    return;
                }
            }
            if (n == 1)
            {
                out.println(-1);
                return;
            }

            int min = n / 2;
            if (k < min)
            {
                out.println(-1);
                return;
            }

            TreeSet<Integer> used = new TreeSet<>();
            int first = (k - min) + 1;
            int second = first * 2;
            used.add(first);
            used.add(second);
            StringBuilder sb = new StringBuilder("");
            sb.append(first + " " + second + " ");
            int left = n - 2;
            while (left >= 2)
            {
                while (true)
                {
                    int f = primes.pollFirst();
                    int s = primes.pollFirst();
                    if (used.contains(f) || used.contains(s))
                    {
                        continue;
                    }
                    left -= 2;
                    used.add(f);
                    used.add(s);
                    sb.append(f + " " + s + " ");
                    break;
                }
            }
            if (left > 0)
            {
                while (true)
                {
                    int f = primes.pollFirst();
                    if (used.contains(f))
                    {
                        continue;
                    }
                    used.add(f);
                    sb.append(f + " ");
                    break;
                }
            }
            out.println(sb.toString().trim());
        }

        private void createSieve()
        {
            boolean[] sieve = new boolean[N + 1];
            for (int i = 2; i * i <= N; i++)
            {
                for (int j = i * i; j <= N; j += i)
                {
                    sieve[j] = true;
                }
            }
            for (int i = 2; i < N + 1; i++)
            {
                if (!sieve[i])
                {
                    primes.add(i);
                }
            }
        }

    }

    static class FastScanner
    {
        public BufferedReader br;
        public StringTokenizer st;

        public FastScanner(InputStream is)
        {
            br = new BufferedReader(new InputStreamReader(is));
        }

        public FastScanner(File f)
        {
            try
            {
                br = new BufferedReader(new FileReader(f));
            } catch (FileNotFoundException e)
            {
                e.printStackTrace();
            }
        }

        public String next()
        {
            while (st == null || !st.hasMoreElements())
            {
                String s = null;
                try
                {
                    s = br.readLine();
                } catch (IOException e)
                {
                    e.printStackTrace();
                }
                if (s == null)
                    return null;
                st = new StringTokenizer(s);
            }
            return st.nextToken();
        }

        public int nextInt()
        {
            return Integer.parseInt(next());
        }

    }

    static class FastPrinter extends PrintWriter
    {
        public FastPrinter(OutputStream out)
        {
            super(out);
        }

        public FastPrinter(Writer out)
        {
            super(out);
        }

    }
}