{HEAD ~ Process} for {TAIL ~ the extractive oxidation} of contaminants from raw fuel streams catalyzed by iron oxides 
for
{ HEAD ~ Process } for { TAIL ~ the extractive oxidation } of contaminants from raw fuel streams catalyzed by iron oxides
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH