proposition: Lemma compat12_compatible' clo (COM: compatible12 gf clo): compatible'12 clo.
proof: Proof. destruct COM. econstructor; [apply compat12_mon0|]. intros. split. - eapply compat12_mon0; intros; [apply PR| apply PR0]. - apply compat12_compat0. eapply compat12_mon0; intros; [apply PR| apply PR0]. Qed.
imports: Program.Basics Paco(paco12 pacotac)