Apply df_mndo__df_ghomOLD__df_rngo__df_drngo__df_rngohom__df_rngoiso__df_risc__df_com2__df_fld__df_crngo__df_idl__df_pridl__df_maxidl__df_prrngo__df_dmn__df_igen__df_xrn__df_coss with
∀ x0 : ι → ο . wceq (ccoss x0) (copab (λ x1 x2 . wex (λ x3 . wa (wbr (cv x3) (cv x1) x0) (wbr (cv x3) (cv x2) x0)))).