left = false
for i=1,169,1
do
	for i=1,158,1
	do
		turtle.forward()
	end
	if not left
	then
		turtle.turnRight()
		turtle.forward()
		turtle.turnRight()
		left = true
	end
	else
		turtle.turnLeft()
		turtle.forward()
		turtle.turnLeft()
		left = false
	end
end