...or does it mean that the conditions might also dependant on a or all things?

A central concept in the Buddhist tradition that all things (X) arise in dependence upon multiple causes and conditions (C). Does this imply a certain causality or order ( C -> X ) or does it mean that the conditions might also dependant on a or all things (C X)? The question arose in a comment to the question if ["Axioms are non-empty?"](https://philosophy.stackexchange.com/questions/11501/are-axioms-non-empty?noredirect=1#comment29774_11501) , saying that "Axioms are basically constructed for theorems. So they are still created things, and thus dependent. " I always wondered if the dependance concept also works the other way round...