The base is deformable so as to enter {HEAD ~ the cavity} of {TAIL ~ the female die} 
of
The base is deformable so as to enter { HEAD ~ the cavity } of { TAIL ~ the female die }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL