{TAIL ~ The projection} extends from a rim of the hole and {HEAD ~ the hollow} is in communication therewith 
{ TAIL ~ The projection } extends from a rim of the hole and { HEAD ~ the hollow } is in communication therewith
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH