{HEAD ~ The syngas stream} is separated into a first process stream and {TAIL ~ a second process stream} 
is separated into
{ HEAD ~ The syngas stream } is separated into a first process stream and { TAIL ~ a second process stream }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL