eye+visual object (both rupa)--> eye consciousness--> phassa/contact (nama/mental)-->vedana/feeling (nama)-->sanna/labels-->sankhara/mental fabrications
I think concepts start with and after that sanna/lables stage.
with vipassana we peel away from the sankhara backwards along this process so that we get to the phassa/contact level when there is 'bare awareness' (sight, sound, colour) perhaps even without the accompanying label (cat, car, flower).
(Vipassana) samadhi must grow for this to happen as it dampens the process of perception and stops proliferation and dispersion of the mind into sankhara/mental fabrication.
with metta
