proposition: Lemma compat5_compatible' clo (COM: compatible5 gf clo): compatible'5 clo.
proof: Proof. destruct COM. econstructor; [apply compat5_mon0|]. intros. split. - eapply compat5_mon0; intros; [apply PR| apply PR0]. - apply compat5_compat0. eapply compat5_mon0; intros; [apply PR| apply PR0]. Qed.
imports: Program.Basics Paco(paco5 pacotac)