The tieback member connects to tieback conduit and has {TAIL ~ a lower end} that slides into {HEAD ~ the interior} of the casing hanger 
The tieback member connects to tieback conduit and has { TAIL ~ a lower end } that slides into { HEAD ~ the interior } of the casing hanger
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH