and the shape of sphere, {HEAD ~ rod} or {TAIL ~ others}, which is a novel material not known in the relevant art 
and the shape of sphere , { HEAD ~ rod } or { TAIL ~ others } , which is a novel material not known in the relevant art
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH