Area 44 of top 16 includes a central aperture {TAIL ~ 44a} which is defined by {HEAD ~ smaller circular central portion 44b} 
Area 44 of top 16 includes a central aperture { TAIL ~ 44a } which is defined by { HEAD ~ smaller circular central portion 44b }
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD