{HEAD ~ The horizontal lands} and horizontal ribs can extend continuously in a vertical direction from {TAIL ~ the shoulder region} to the base portion 
extend continuously from
{ HEAD ~ The horizontal lands } and horizontal ribs can extend continuously in a vertical direction from { TAIL ~ the shoulder region } to the base portion
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH