{HEAD ~ The overall results} of the reactions of elements oxidation and reduction consist in {TAIL ~ the production} of CO containing gas and evolving heat 
consist in
{ HEAD ~ The overall results } of the reactions of elements oxidation and reduction consist in { TAIL ~ the production } of CO containing gas and evolving heat
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH