while true do
	local sslot = 1
	if turtle.getFuelLevel() > 0 then
	turtle.select(sslot)
	if turtle.getItemCount() > 0 then
	turtle.forward()
	turtle.digDown()
	turtle.placeDown()
	else
	sslot = (sslot%16)+1
	turtle.select(sslot)
	end
	else
	turtle.select(16)
	turtle.refuel(1)
	end
	sleep(1)
	end