{HEAD ~ The lower end} of the tieback member will seal in {TAIL ~ the interior} of the casing hanger 
seal in
{ HEAD ~ The lower end } of the tieback member will seal in { TAIL ~ the interior } of the casing hanger
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH