placewall

selslot = 2
selslot2 = 12

turtle.refuel()

while true do

	turtle.select(selslot)
	while turtle.getItemCount( turtle.getSelectedSlot() ) == 0 do
		selslot = selslot + 1
		turtle.select(selslot)
	end
	turtle.placeDown()

	turtle.select(selslot2)
	while turtle.getItemCount( turtle.getSelectedSlot() ) == 0 do
		selslot2 = selslot2 + 1
		turtle.select(selslot2)
	end
	turtle.place()

	turtle.back()
end