import sys
input = sys.stdin.readline
from collections import *

N, S = map(int, input().split())
P = [int(input()) for _ in range(N)]
N1 = N//2
d1 = defaultdict(list)

for S1 in range(1<<N1):
    s = 0
    
    for i in range(N1):
        if (S1>>i)&1:
            s += P[i]
    
    d1[s].append(S1)

N2 = N-N//2
d2 = defaultdict(list)

for S2 in range(1<<N2):
    s = 0
    
    for i in range(N2):
        if (S2>>i)&1:
            s += P[N1+i]
    
    d2[s].append(S2)

ans = []

for k in d1:
    for S1 in d1[k]:
        for S2 in d2[S-k]:
            l = []
            
            for i in range(N1):
                if (S1>>i)&1:
                    l.append(i+1)
            
            for i in range(N2):
                if (S2>>i)&1:
                    l.append(N1+i+1)
            
            ans.append(l)
            
ans.sort()

for l in ans:
    print(*l)