{HEAD ~ Gas} allocated at {TAIL ~ pyrolysis} condensing and dividing to water and organic phases  
allocated at
{ HEAD ~ Gas } allocated at { TAIL ~ pyrolysis } condensing and dividing to water and organic phases
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH