Drill v2

local arg = { ... }
local c = arg[1]
local y = 0
local x = 1
for i=1,c do
	for i=1,x do
		turtle.forward()
	end
	local continue = true
	while continue do
		for i=1,4 do
			turtle.dig()
			turtle.turnRight()
		end
		turtle.digDown()
		local moved = turtle.down()
		if moved then
			y = y + 1
		else
			continue = false
		end
	end



	for i=1,y do
		turtle.up()
	end
	y = 0
	turtle.turnRight()
	turtle.turnRight()
	for i=1,x do
		turtle.forward()
	end
	x = x + 3


	for i=1,16 do
		turtle.select(i)
		turtle.drop()
	end
	turtle.turnLeft()
	for i=1,16 do
		turtle.select(i)
		turtle.drop()
	end
	turtle.turnLeft()
end