The method may also include using {HEAD ~ multiple successive extruded bodies}, optionally with different heat exchange feeds, and further optionally with {TAIL ~ varying reactant feeds} for each 
optionally with
The method may also include using { HEAD ~ multiple successive extruded bodies } , optionally with different heat exchange feeds , and further optionally with { TAIL ~ varying reactant feeds } for each
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH