{HEAD ~ Containers} 58 and 59 of silicon and oxygen , respectively, are coupled to tube 37 via {TAIL ~ pipe} 40 under the control of flow controllers 61 and 62, respectively 
are coupled via
{ HEAD ~ Containers } 58 and 59 of silicon and oxygen , respectively , are coupled to tube 37 via { TAIL ~ pipe } 40 under the control of flow controllers 61 and 62 , respectively
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH