NO
0.08/0.17	NO
0.08/0.17	
0.08/0.17	Problem:
0.08/0.17	 tail(cons(X)) -> XS
0.08/0.17	 zeros() -> cons(0())
0.08/0.17	
0.08/0.17	Proof:
0.08/0.17	 Fresh Variable Processor:
0.08/0.17	  loop length: 1
0.08/0.17	  terms:
0.08/0.17	   tail(cons(X))
0.08/0.17	  context: []
0.08/0.17	  substitution:
0.08/0.17	   XS -> tail(cons(X))
0.08/0.17	  Qed
0.08/0.18	EOF