{HEAD ~ The CO} of the second stream is reacted with {TAIL ~ water} to produce formic acid 
is reacted with
{ HEAD ~ The CO } of the second stream is reacted with { TAIL ~ water } to produce formic acid
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH