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