# coding: utf-8
# Your code here!
import sys
readline = sys.stdin.readline
read = sys.stdin.read

#a,b,c = map(int,readline().split())

def f(r):
    n = len(r)
    v = [0]
    for i in r:
        v += [vi+i for vi in v]
    
    v = [(v[i],i) for i in range(1<<n)]
    return v

n,s,*p = map(int,open(0).read().split())

a = f(p[:n//2])
b = f(p[n//2:])
#print(b)
a.sort(key=lambda x:x[0])
b.sort(key=lambda x:x[0])

from bisect import bisect_left,bisect_right

la = n//2
lb = n-la
ans = []
for bi,i in b:
    if s < bi: break
    l = bisect_left(a,(s-bi,-1))    
    r = bisect_right(a,(s-bi,1<<31))    

    for aj,j in a[l:r]:
        res = []
        v = 0
        for k in range(la):
            v += 1
            if j>>k&1:
                res.append(v)
        for k in range(lb):
            v += 1
            if i>>k&1:
                res.append(v)

        ans.append(res)                
        #print(aj,j,bi,i)

ans.sort()
for i in ans: print(*i)