term.write("How long?")
x = read()
local function digtunnel()
	if (turtle.detect() == false) then
		turtle.select(1)
		turtle.place()
	end
	if (!turtle.detectUp() == false) then
		turtle.placeUp()
	end
	if (!turtle.detectDown() == false) then
		turtle.placeDown()
	end
	turtle.dig()
	turtle.digUp()
	turtle.digDown()
	turtle.forward()
	turtle.turnRight()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.digDown()
	turtle.digUp()
	turtle.turnLeft()
	turtle.turnLeft()
	turtle.forward()
	turtle.forward()
	turtle.dig()
	turtle.forward()
	turtle.dig()
	turtle.digUp()
	turtle.digDown()
	turtle.turnRight()
	turtle.turnRight()
	turtle.forward()
	turtle.turnLeft()
end
for i = 1, x do
	digtunnel()
end