function leftPlace()
turtle.turnLeft()
turtle.forward()
turtle.turnRight()
turtle.place()
turtle.turnRight()
turtle.forward()
turtle.turnLeft()
end
function rightPlace()
turtle.turnRight()
turtle.forward()
turtle.turnLeft()
turtle.place()
turtle.turnLeft()
turtle.forward()
turtle.turnRight()
end
function restock()
turtle.select(16)
turtle.turnLeft()
turtle.suck(turtle.getItemSpace())
turtle.turnRight()
turtle.turnRight()
turtle.select(2)
turtle.suck(turtle.getItemSpace())
turtle.select(1)
turtle.suckUp(turtle.getItemSpace())
turtle.turnLeft()
end
while (true) do

	if(rs.getInput("back")) then

		print("Stopped")
		sleep(1)

	else
		print("Running")
		if(turtle.getFuelLevel()<80) then
			turtle.select(16)
			turtle.refuel()
		else
			turtle.select(3)
			turtle.dig()
			for i = 0,2 do
			turtle.forward();
			end
			for i = 0,1 do
			turtle.down();
			end
			turtle.select(1)
			turtle.place()
			turtle.up()
			leftPlace()
			rightPlace()
			turtle.place()
			turtle.up()
			turtle.select(2)
			leftPlace()
			rightPlace()
			turtle.place()
			for i = 0,2 do
			turtle.back();
			end
			turtle.select(3)
			turtle.place()
			sleep(15)
			print("Restocking")
			restock()
			sleep(15)

		end

	end

end