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.BufferedReader;
import java.util.Comparator;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Collection;
import java.util.List;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.StringTokenizer;
import java.math.BigInteger;
import java.util.Collections;
import java.io.InputStream;

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

class TaskA {
    public void solve(int testNumber, InputReader in, PrintWriter out) {
        int n = in.nextInt();
        int k = in.nextInt();

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

        int[] a = new int[n];
        HashSet<Integer> was = new HashSet<Integer>();

        int n2 = n / 2;
        if (k < n2) {
            out.println(-1);
            return;
        }

        n2--;
        k -= n2;

        a[0] = k;
        a[1] = 2 * k;
        was.add(k);
        was.add(2 * k);
        int cur = 1;
        for (int i = 2; i + 1 < n; i += 2) {
            while (was.contains(cur)) ++cur;
            int nx = cur + 1;
            while (was.contains(nx) || IntegerUtils.gcd(nx, cur) != 1) ++nx;
            was.add(cur);
            was.add(nx);
            a[i] = cur;
            a[i+1] = nx;
        }

        if (n % 2 == 1) {
            for (int i = 1; ; ++i) {
                if (!was.contains(i)) {
                    a[n-1] = i;
                    break;
                }
            }
        }
        out.println(ArrayUtils.toString(a));
    }
}

class InputReader {
    private BufferedReader reader;
    private StringTokenizer stt;

    public InputReader(InputStream stream) {
        reader = new BufferedReader(new InputStreamReader(stream));
    }

    public String nextLine() {
        try {
            return reader.readLine();
        } catch (IOException e) {
            return null;
        }
    }

    public String nextString() {
        while (stt == null || !stt.hasMoreTokens()) {
            stt = new StringTokenizer(nextLine());
        }
        return stt.nextToken();
    }

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

}

class IntegerUtils {

    public static int gcd(int x, int y) {
        return y == 0 ? x : gcd(y, x % y);
    }

    //    public static long min(long... a) {
//        long result = a[0];
//        for (int i = 1; i < a.length; ++i) {
//            result = Math.min(result, a[i]);
//        }
//        return result;
//    }

}

class ArrayUtils {

    public static String toString(int[] a) {
        StringBuilder result = new StringBuilder("");
        for (int x : a) result.append(x).append(' ');
        return result.substring(0, result.length()-1);
    }

}