Opaque Zero_e One_e False_e Rev_e RemoveLSZ_e.
Definition Normalize_e : Cobham :=
Comp 1 Rev_e [Comp 1 RemoveLSZ_e [Rev_e]].

Lemma Normalize_normal : forall l,
Sem Normalize_e l = nil \/ bs2nat (Sem Normalize_e l) <> 0.