f = 0
b = 0
turtle.select(16)
turtle.refuel()
turtle.select(1)

function ClearScreen()
	term.clear()
	term.setCursorPos(1,1)
end

function NoBlock()
	b = b+1
	turtle.select(b)
end

local cycles = 0

print("How long do you want it to run?")
cycles = read()
for i = 0, cycles do
	turtle.up()
	turtle.placeDown()
	if turtle.detectDown() == 0 then
		NoBlock()
	end
	turtle.up()
	turtle.placeDown()
	if turtle.detectDown() == 0 then
		NoBlock()
	end
	turtle.back()
	turtle.place()
	if turtle.detect() == 0 then
		NoBlock()
	end
	turtle.down()
	turtle.placeUp()
	if turtle.detectUp() == 0 then
		NoBlock()
	end
	turtle.down()
	turtle.placeUp()
	if turtle.detectUp() == 0 then
		NoBlock()
	end
	turtle.back()
	turtle.place()
	if turtle.detect() == 0 then
		NoBlock()
	end
end