fibo-2 n:
	n 0 1
	labda times back-2 back-1:
		if = times 0:
			back-2
		elseif = times 1:
			back-1
		elseif = times 2:
			+ back-1 back-2
		else:
			recurse -- times back-1 + back-1 back-2
	call

for j range 0 10:
	!print fibo-2 j