{HEAD ~ The gas} combusted within the combustion chamber through {TAIL ~ the above mentioned process} is then rapidly removed from the combustion chamber 
{ HEAD ~ The gas } combusted within the combustion chamber through { TAIL ~ the above mentioned process } is then rapidly removed from the combustion chamber
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH