{TAIL ~ The female die} has a cavity, whose wall has {HEAD ~ a bottom portion} and a top portion 
{ TAIL ~ The female die } has a cavity , whose wall has { HEAD ~ a bottom portion } and a top portion
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH