Apply df_trg__df_tdrg__df_tlm__df_tvc__df_ust__df_utop__df_uss__df_usp__df_tus__df_ucn__df_cfilu__df_cusp__df_xms__df_ms__df_tms__df_nm__df_ngp__df_tng with
wceq ccfilu (cmpt (λ x0 . cuni (crn cust)) (λ x0 . crab (λ x1 . wral (λ x2 . wrex (λ x3 . wss (cxp (cv x3) (cv x3)) (cv x2)) (λ x3 . cv x1)) (λ x2 . cv x0)) (λ x1 . cfv (cdm (cuni (cv x0))) cfbas))).