function Forward ()
	for i = 1,8 do
		Plant()
		turtle.forward()
		end
	Plant()
	turtle.turnRight()
	turtle.forward()
	turtle.turnRight()
end

function Back()
	for i = 1,8 do
		Plant()
		turtle.forward()
	end
	Plant()
	turtle.turnLeft()
	turtle.forward()
	turtle.turnLeft()
end

function Count()
	C = turtle.getItemCount(1)
	if C==0 then
	turtle.select(2)
	end
end

function Plant()
	Count()
	turtle.placeDown()
end

function BackToStart()
	turtle.turnRight()
	for i = 1,9 do
		turtle.forward()
	end
	turtle.turnLeft()
	for i = 1,8 do
		turtle.forward()
	end
	turtle.turnRight()
	turtle.turnRight()
end

for g = 1,4 do
	Forward()
	Back()
end

Forward()
BackToStart()