$stdout.sync = true

ns = *0..9
ns.first(8).combination(4) do |a|
  puts a.join(" ")
  x, y = gets.split.map(&:to_i)
  exit if x == 4 && y == 0
  begin ns -= a; break end if x == 0 && y == 0
end

ns.combination(4) do |a|
  puts a.join(" ")
  x, y = gets.split.map(&:to_i)
  exit if x == 4 && y == 0

  if x + y == 4 then
    a.permutation do |a|
      puts a.join(" ")
      x, y = gets.split.map(&:to_i)
      exit if x == 4 && y == 0
    end
  end
end