function place()
	while turtle.getItemCount() == 0 do
		turtle.select(((turtle.getSelectedSlot() + 1) % 16) + 1)
	end
	turtle.place()
end

local loop = true
local turnCount = 0
while loop do
	if turtle.back() then
		turnCount = 0
		place()
	else
		turtle.turnLeft()
		turnCount = turnCount + 1
	end

	if turnCount == 4 then
		loop = false
	end
end
turtle.down()
turtle.placeUp()