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