{HEAD ~ The front seating area} is defined by a generally semi elliptical front perimeter surface while {TAIL ~ the rear seating area} is defined by a different, generally semi elliptical rear perimeter surface 
{ HEAD ~ The front seating area } is defined by a generally semi elliptical front perimeter surface while { TAIL ~ the rear seating area } is defined by a different , generally semi elliptical rear perimeter surface
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH