N, S = map(int, input().split())

price = [int(input()) for _ in range(N)]

price_A = {}

a = N // 2
b = N - a

for i in range(1 << a):
    sum = 0
    for j in range(a):
        if (i >> j) % 2 == 0:
            continue
        sum += price[j]
    if sum in price_A:
        price_A[sum].append(i)
    else:
        price_A[sum] = [i]
 
print(price_A)

answer = []
for i in range(1 << b):
    sum = 0
    for j in range(b):
        if (i >> j) % 2 == 0:
            continue
        sum += price[a + j]
    need = S - sum
    if need in price_A:
        for ar in price_A[need]:
            ans = []
            for j in range(a):
                if (ar >> j) % 2 == 1:
                    ans.append(j + 1)
            for j in range(b):
                if (i >> j) % 2 == 1:
                    ans.append(a + j + 1)
            answer.append(ans)

answer.sort()

for ans in answer:
    print(' '.join(map(str, ans)))