xSize = 5
ySize = 5
height = 3
leftRight = false


function digX()
	for i=1, xSize-1 do
		while turtle.detect() do turtle.dig() end
		turtle.forward()
	end
end

function turn()
	if leftRight then turtle.turnLeft() else turtle.turnRight() end
end



while turtle.detect() do turtle.dig() end
turtle.forward()


for i=1, height do
	for j=1, ySize-1 do
		digX()
		turn()
		while turtle.detect() do turtle.dig() end
		turtle.forward()
		turn()
		leftRight = not leftRight
	end
	leftRight = not leftRight
	turn()
	turn()
	turtle.digUp()
	turtle.up()
end