Apply df_ec__df_qs__df_map__df_pm__df_ixp__df_en__df_dom__df_sdom__df_fin__df_fsupp__df_fi__df_sup__df_inf__df_oi__df_har__df_wdom__ax_reg__ax_inf with
wceq cwdom (copab (λ x0 x1 . wo (wceq (cv x0) c0) (wex (λ x2 . wfo (cv x1) (cv x0) (cv x2))))).
Assume H12: ∀ x0 x1 x2 : ι → ο . ....