def dfs(index, money, goods, dic, end):
    global P

    if index == end:
        dic.setdefault(money, []).append(list(goods))
        return

    goods.append(index + 1)
    dfs(index + 1, money + P[index], goods, dic, end)
    goods.pop()

    dfs(index + 1, money, goods, dic, end)

N, S = map(int, raw_input().split())
P = [int(raw_input()) for i in xrange(N)]

first = {}
second = {}
dfs(0, 0, [], first, N / 2)
dfs(N / 2, 0, [], second, N)

ans = []

for money, l in first.iteritems():
    if not S - money in second:
        continue

    for first_goods in l:
        for second_goods in second[S - money]:
                ans.append(first_goods + second_goods)
    
ans.sort()
for goods in ans:
    print ' '.join(map(str, goods))