reducing {TAIL ~ the amount} of oxidant supplied via the oxidant conduit when a temperature in the fuel conduit reaches {HEAD ~ a specified temperature} 
reducing { TAIL ~ the amount } of oxidant supplied via the oxidant conduit when a temperature in the fuel conduit reaches { HEAD ~ a specified temperature }
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD