each footed portion being defined in part by {TAIL ~ an upper surface} which diverges from {HEAD ~ said body portion} 
each footed portion being defined in part by { TAIL ~ an upper surface } which diverges from { HEAD ~ said body portion }
OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD