n,s=gets.split.map &:to_i
a=(0..n).map{gets.to_i}
h={}
(0...1<<n-n/2).each{|y|(h[(0..n).map{|i|(y>>i-n/2&1)*a[i]}.inject:+]||=[])<<y}
(0...1<<n/2).map{|x|(h[s-(0..n).map{|i|(x>>i&1)*a[i]}.inject(:+)]||[]).map{|y|x|y<<n/2}}.flatten.map{|z|(0..n).select{|i|z>>i-1&1>0}}.sort.each{|_|puts _*' '}