function recevoir()
  if turtle.getItemCount(5) >= 1 then
  sleep(10)
    for i = 1, 5 do
      turtle.forward()
    end
    while not turtle.detectUp() do
      turtle.up()
    end
    if turtle.detectUp() then
      for i = 1, 16 do
        turtle.select(i)
        turtle.dropUp()
      end
    end
    while not turtle.detectDown() do
      turtle.down()
    end
    if turtle.detectDown() then
      for i = 1, 5 do
        turtle.back()
      end
    end
  end
end
while true do
  recevoir()
end