func main()
	var k: int :: cui@inputInt()
	for i(1, k)
		var x: int :: 2 ^ (k - i)
		var dx: int :: x * 2
		for j(1, 2 ^ (i - 1))
			if(x <= 2)
				do cui@print("\{3 - x}")
			else
				do cui@print("\{x}")
			end if
			do cui@print(j = 2 ^ (i - 1) ?("", " "))
			do x :+ dx
		end for
		do cui@print((i = k) ?("\n", " "))
	end for
end func