import itertools
import sys

input = sys.stdin.readline


def powerset(iterable):
    "powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)"
    s = list(iterable)
    return itertools.chain.from_iterable(itertools.combinations(s, r) for r in range(len(s)+1))


def main():
    N, S = map(int, input().split())
    P = [int(input()) for i in range(N)]

    FH = {}
    for x in powerset(range(N//2)):
        s = sum(P[i] for i in x)
        if s not in FH:
            FH[s] = []
        FH[s].append(x)

    ans = []

    for x in powerset(range(N//2, N)):
        s = sum(P[i] for i in x)
        for v in FH.get(S-s, []):
            ans.append(v+x)

    for i in sorted(ans):
        print(*map(lambda x: x+1, i))


if __name__ == '__main__':
    main()