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