The streams can, more or less, contain {HEAD ~ equal parts} of {TAIL ~ each component} and are used without further processing or purification 
of
The streams can , more or less , contain { HEAD ~ equal parts } of { TAIL ~ each component } and are used without further processing or purification
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH