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