{HEAD ~ The expanded refrigerant} in line 82 is combined with {TAIL ~ a warmed refrigerant} returned from the third stage heat exchanger 16 in return line 90 
is combined with
{ HEAD ~ The expanded refrigerant } in line 82 is combined with { TAIL ~ a warmed refrigerant } returned from the third stage heat exchanger 16 in return line 90
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH