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
wceq crisc (copab (λ x0 x1 . wa (wa (wcel (cv x0) crngo) (wcel (cv x1) crngo)) (wex (λ x2 . wcel (cv x2) (co (cv x0) (cv x1) crngiso))))).