import java.io.*;
import java.util.*;

public class Main {

    public static void main(String[] args) throws Exception {

        Scanner sc = new Scanner(System.in);

        int n = sc.nextInt();

        int n1 = n / 2;

        int n2 = n - n1;

        int s = sc.nextInt();

        int[] p1 = new int[n1];
        int[] p2 = new int[n2];

        for (int i = 0; i < n1; i++) {
            p1[i] = sc.nextInt();
        }
        for (int i = 0; i < n2; i++) {
            p2[i] = sc.nextInt();
        }

        TreeMap<Integer, ArrayList<TreeMap<Integer, Integer>>> fir = new TreeMap();
        TreeMap<Integer, ArrayList<TreeMap<Integer, Integer>>> sec = new TreeMap();

        int max1 = (int) Math.pow(2, p1.length);
        int max2 = (int) Math.pow(2, p2.length);

        for (int i = 1; i < max1; i++) {
            char[] bit = Integer.toBinaryString(i).toCharArray();

            int sum = 0;

            TreeMap<Integer, Integer> tmpSet = new TreeMap();

            for (int j = 0; j < bit.length; j++) {
                if (bit[j] == '1') {
                    sum = sum + p1[bit.length - 1 - j];
                    tmpSet.put(bit.length - j, p1[bit.length - 1 - j]);
                }
            }

            ArrayList<TreeMap<Integer, Integer>> tmpList;

            if (fir.containsKey(sum)) {
                tmpList = fir.get(sum);
            } else {
                tmpList = new ArrayList();
                fir.put(sum, tmpList);
            }

            tmpList.add(tmpSet);
        }

        for (int i = 1; i < max2; i++) {
            char[] bit = Integer.toBinaryString(i).toCharArray();

            int sum = 0;

            TreeMap<Integer, Integer> tmpSet = new TreeMap();

            for (int j = 0; j < bit.length; j++) {
                if (bit[j] == '1') {
                    sum = sum + p2[bit.length - 1 - j];
                    tmpSet.put(bit.length - j + n1, p2[bit.length - 1 - j]);
                }
            }

            ArrayList<TreeMap<Integer, Integer>> tmpList;

            if (sec.containsKey(sum)) {
                tmpList = sec.get(sum);
            } else {
                tmpList = new ArrayList();
                sec.put(sum, tmpList);
            }

            tmpList.add(tmpSet);
        }

        ArrayList<TreeMap<Integer, Integer>> merged = new ArrayList();

        if (fir.containsKey(s)) {
            ArrayList<TreeMap<Integer, Integer>> set1 = fir.get(s);

            for (int i = 0; i < set1.size(); i++) {
                merged.add(set1.get(i));
            }
        }

        for (int key : fir.keySet()) {
            if (!sec.containsKey(s - key)) {
                continue;
            }

            ArrayList<TreeMap<Integer, Integer>> set1 = fir.get(key);
            ArrayList<TreeMap<Integer, Integer>> set2 = sec.get(s - key);

            for (int i = 0; i < set1.size(); i++) {
                TreeMap<Integer, Integer> merge = new TreeMap();

                merger(merge, set1.get(i));

                for (int j = 0; j < set2.size(); j++) {
                     TreeMap<Integer, Integer> tmp = (TreeMap)merge.clone();
                    merger(tmp, set2.get(j));
                    merged.add(tmp);
                }
            }
        }
        if (sec.containsKey(s)) {
            ArrayList<TreeMap<Integer, Integer>> set2 = sec.get(s);

            for (int i = 0; i < set2.size(); i++) {
                merged.add(set2.get(i));
            }
        }

        for (TreeMap<Integer, Integer> tmpSet : merged) {
            boolean first = true;
            for (int num : tmpSet.keySet()) {
                if (first) {
                    System.out.print(num);
                    first = false;
                } else {
                    System.out.print(" " + num);
                }
            }

            System.out.println();
        }
    }

    private static void merger(
            TreeMap<Integer, Integer> merge,
            TreeMap<Integer, Integer> source) {

        for (int key : source.keySet()) {
            merge.put(key, source.get(key));
        }
    }
}