{HEAD ~ The process} 1 wherein said {TAIL ~ CO oxidation metal} is added to said process through said reaction zone 
wherein
{ HEAD ~ The process } 1 wherein said { TAIL ~ CO oxidation metal } is added to said process through said reaction zone
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH