local length
	local size

		print("What size would you like the tunnel?")
		print("1: 1x1")
		print("2: 3x3")
		print("3. 5x5")
		size = read()
		screen.clear()
		print ("How far do you want to tunnel?")
		length = read()

	switch size
		case "5x5": 5x5()
		case "3x3": 3x3()
	end


	function 5x5(length)
		while x <= length do
			turtle.dig()
			turtle.forward()
			dig5()
			x = x + 1
		end
	end

	function 3x3(length)

	end

	function dig5()
	turtle.turnRight()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.back(4)
	end

	function dig3()
	turtle.turnRight()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.back(4)
	end