{TAIL ~ The gamma structures} have {HEAD ~ a base} 12′ and a plurality of recesses 16′ defined therewithin 
{ TAIL ~ The gamma structures } have { HEAD ~ a base } 12′ and a plurality of recesses 16′ defined therewithin
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH