turtle.refuel(10)
while true do

	kaas = 20
	while kaas > 0 do
		turtle.forward()
		kaas = kaas - 1
	end

	while turtle.down() do
	end

	turtle.select(2)
	while turtle.up() do
		turtle.placeDown()
	end
	turtle.select(3)
	turtle.placeUp()

end