{HEAD ~ The gaseous product stream} is contacted with {TAIL ~ an absorbent} to produce a gas effluent and a liquid effluent 
{ HEAD ~ The gaseous product stream } is contacted with { TAIL ~ an absorbent } to produce a gas effluent and a liquid effluent
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH