{HEAD ~ Further release} of gas and stratification of the oil and water occurs within {TAIL ~ the post heating zone} 32 
occurs within
{ HEAD ~ Further release } of gas and stratification of the oil and water occurs within { TAIL ~ the post heating zone } 32
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH